]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
feaff8e5 | 41 | #include <linux/file.h> |
1da177e4 | 42 | #include <linux/string.h> |
652f89f6 TM |
43 | #include <linux/ratelimit.h> |
44 | #include <linux/printk.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | #include <linux/sunrpc/clnt.h> |
47 | #include <linux/nfs.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_fs.h> | |
50 | #include <linux/nfs_page.h> | |
9b7160c5 | 51 | #include <linux/nfs_mount.h> |
1da177e4 | 52 | #include <linux/namei.h> |
02a913a7 | 53 | #include <linux/mount.h> |
99fe60d0 | 54 | #include <linux/module.h> |
64c2ce8b | 55 | #include <linux/xattr.h> |
c7a360b0 | 56 | #include <linux/utsname.h> |
d310310c | 57 | #include <linux/freezer.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
40c64c26 | 66 | #include "nfs4idmap.h" |
73e39aaa | 67 | #include "nfs4session.h" |
de242c0b | 68 | #include "fscache.h" |
1da177e4 | 69 | |
c6d01c6f TM |
70 | #include "nfs4trace.h" |
71 | ||
1da177e4 LT |
72 | #define NFSDBG_FACILITY NFSDBG_PROC |
73 | ||
2066fe89 | 74 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
75 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
76 | ||
a1d1c4f1 TM |
77 | /* file attributes which can be mapped to nfs attributes */ |
78 | #define NFS4_VALID_ATTRS (ATTR_MODE \ | |
79 | | ATTR_UID \ | |
80 | | ATTR_GID \ | |
81 | | ATTR_SIZE \ | |
82 | | ATTR_ATIME \ | |
83 | | ATTR_MTIME \ | |
84 | | ATTR_CTIME \ | |
85 | | ATTR_ATIME_SET \ | |
86 | | ATTR_MTIME_SET) | |
87 | ||
cdd4e68b | 88 | struct nfs4_opendata; |
864472e9 | 89 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 90 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 91 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
81934ddb | 92 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
1775fd3e DQ |
93 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); |
94 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); | |
0ab64e0e TM |
95 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
96 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
97 | struct nfs4_state *state, struct nfs4_label *ilabel, |
98 | struct nfs4_label *olabel); | |
f062eb6c | 99 | #ifdef CONFIG_NFS_V4_1 |
ab7cb0df TM |
100 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
101 | struct rpc_cred *); | |
f0b0bf88 TM |
102 | static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *, |
103 | struct rpc_cred *, bool); | |
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 | ||
26d36301 TM |
331 | static void nfs4_test_and_free_stateid(struct nfs_server *server, |
332 | nfs4_stateid *stateid, | |
333 | struct rpc_cred *cred) | |
334 | { | |
335 | const struct nfs4_minor_version_ops *ops = server->nfs_client->cl_mvops; | |
336 | ||
337 | ops->test_and_free_expired(server, stateid, cred); | |
338 | } | |
339 | ||
340 | static void __nfs4_free_revoked_stateid(struct nfs_server *server, | |
341 | nfs4_stateid *stateid, | |
342 | struct rpc_cred *cred) | |
343 | { | |
344 | stateid->type = NFS4_REVOKED_STATEID_TYPE; | |
345 | nfs4_test_and_free_stateid(server, stateid, cred); | |
346 | } | |
347 | ||
348 | static void nfs4_free_revoked_stateid(struct nfs_server *server, | |
349 | const nfs4_stateid *stateid, | |
350 | struct rpc_cred *cred) | |
351 | { | |
352 | nfs4_stateid tmp; | |
353 | ||
354 | nfs4_stateid_copy(&tmp, stateid); | |
355 | __nfs4_free_revoked_stateid(server, &tmp, cred); | |
356 | } | |
357 | ||
8478eaa1 N |
358 | static long nfs4_update_delay(long *timeout) |
359 | { | |
360 | long ret; | |
361 | if (!timeout) | |
362 | return NFS4_POLL_RETRY_MAX; | |
363 | if (*timeout <= 0) | |
364 | *timeout = NFS4_POLL_RETRY_MIN; | |
365 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
366 | *timeout = NFS4_POLL_RETRY_MAX; | |
367 | ret = *timeout; | |
368 | *timeout <<= 1; | |
369 | return ret; | |
370 | } | |
371 | ||
65de872e TM |
372 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) |
373 | { | |
374 | int res = 0; | |
375 | ||
376 | might_sleep(); | |
377 | ||
8478eaa1 N |
378 | freezable_schedule_timeout_killable_unsafe( |
379 | nfs4_update_delay(timeout)); | |
65de872e TM |
380 | if (fatal_signal_pending(current)) |
381 | res = -ERESTARTSYS; | |
65de872e TM |
382 | return res; |
383 | } | |
384 | ||
385 | /* This is the error handling routine for processes that are allowed | |
386 | * to sleep. | |
387 | */ | |
b3c2aa07 TM |
388 | static int nfs4_do_handle_exception(struct nfs_server *server, |
389 | int errorcode, struct nfs4_exception *exception) | |
65de872e TM |
390 | { |
391 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 392 | struct nfs4_state *state = exception->state; |
8487c479 | 393 | const nfs4_stateid *stateid = exception->stateid; |
3114ea7a | 394 | struct inode *inode = exception->inode; |
65de872e TM |
395 | int ret = errorcode; |
396 | ||
b3c2aa07 TM |
397 | exception->delay = 0; |
398 | exception->recovering = 0; | |
65de872e TM |
399 | exception->retry = 0; |
400 | switch(errorcode) { | |
401 | case 0: | |
402 | return 0; | |
3114ea7a | 403 | case -NFS4ERR_OPENMODE: |
5ba12443 TM |
404 | case -NFS4ERR_DELEG_REVOKED: |
405 | case -NFS4ERR_ADMIN_REVOKED: | |
406 | case -NFS4ERR_BAD_STATEID: | |
8487c479 TM |
407 | if (inode) { |
408 | int err; | |
409 | ||
410 | err = nfs_async_inode_return_delegation(inode, | |
411 | stateid); | |
412 | if (err == 0) | |
413 | goto wait_on_recovery; | |
414 | if (stateid != NULL && stateid->type == NFS4_DELEGATION_STATEID_TYPE) { | |
415 | exception->retry = 1; | |
416 | break; | |
417 | } | |
418 | } | |
3114ea7a TM |
419 | if (state == NULL) |
420 | break; | |
5d422301 TM |
421 | ret = nfs4_schedule_stateid_recovery(server, state); |
422 | if (ret < 0) | |
423 | break; | |
3114ea7a | 424 | goto wait_on_recovery; |
0ced63d1 | 425 | case -NFS4ERR_EXPIRED: |
5d422301 TM |
426 | if (state != NULL) { |
427 | ret = nfs4_schedule_stateid_recovery(server, state); | |
428 | if (ret < 0) | |
429 | break; | |
430 | } | |
65de872e | 431 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 432 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
433 | nfs4_schedule_lease_recovery(clp); |
434 | goto wait_on_recovery; | |
519ae255 CL |
435 | case -NFS4ERR_MOVED: |
436 | ret = nfs4_schedule_migration_recovery(server); | |
437 | if (ret < 0) | |
438 | break; | |
439 | goto wait_on_recovery; | |
8ef2f8d4 CL |
440 | case -NFS4ERR_LEASE_MOVED: |
441 | nfs4_schedule_lease_moved_recovery(clp); | |
442 | goto wait_on_recovery; | |
03391693 | 443 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
444 | case -NFS4ERR_BADSESSION: |
445 | case -NFS4ERR_BADSLOT: | |
446 | case -NFS4ERR_BAD_HIGH_SLOT: | |
447 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
448 | case -NFS4ERR_DEADSESSION: | |
449 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
450 | case -NFS4ERR_SEQ_MISORDERED: | |
451 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
452 | errorcode); | |
9f594791 | 453 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 454 | goto wait_on_recovery; |
03391693 | 455 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 456 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
457 | if (exception->timeout > HZ) { |
458 | /* We have retried a decent amount, time to | |
459 | * fail | |
460 | */ | |
461 | ret = -EBUSY; | |
462 | break; | |
463 | } | |
65de872e | 464 | case -NFS4ERR_DELAY: |
2598ed34 TM |
465 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
466 | case -NFS4ERR_GRACE: | |
e85d7ee4 | 467 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b | 468 | case -NFS4ERR_RECALLCONFLICT: |
b3c2aa07 TM |
469 | exception->delay = 1; |
470 | return 0; | |
471 | ||
a8a4ae3a | 472 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
473 | case -NFS4ERR_OLD_STATEID: |
474 | exception->retry = 1; | |
b064eca2 TM |
475 | break; |
476 | case -NFS4ERR_BADOWNER: | |
477 | /* The following works around a Linux server bug! */ | |
478 | case -NFS4ERR_BADNAME: | |
479 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
480 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
481 | exception->retry = 1; | |
482 | printk(KERN_WARNING "NFS: v4 server %s " | |
483 | "does not accept raw " | |
484 | "uid/gids. " | |
485 | "Reenabling the idmapper.\n", | |
486 | server->nfs_client->cl_hostname); | |
487 | } | |
65de872e TM |
488 | } |
489 | /* We failed to handle the error */ | |
490 | return nfs4_map_errors(ret); | |
0400a6b0 | 491 | wait_on_recovery: |
b3c2aa07 TM |
492 | exception->recovering = 1; |
493 | return 0; | |
494 | } | |
495 | ||
496 | /* This is the error handling routine for processes that are allowed | |
497 | * to sleep. | |
498 | */ | |
499 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
500 | { | |
501 | struct nfs_client *clp = server->nfs_client; | |
502 | int ret; | |
503 | ||
504 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
505 | if (exception->delay) { | |
506 | ret = nfs4_delay(server->client, &exception->timeout); | |
507 | goto out_retry; | |
508 | } | |
509 | if (exception->recovering) { | |
510 | ret = nfs4_wait_clnt_recover(clp); | |
511 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
512 | return -EIO; | |
513 | goto out_retry; | |
514 | } | |
515 | return ret; | |
516 | out_retry: | |
a2c0b9e2 TM |
517 | if (ret == 0) |
518 | exception->retry = 1; | |
519 | return ret; | |
65de872e TM |
520 | } |
521 | ||
037fc980 TM |
522 | static int |
523 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
524 | int errorcode, struct nfs4_exception *exception) | |
525 | { | |
526 | struct nfs_client *clp = server->nfs_client; | |
527 | int ret; | |
528 | ||
529 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
530 | if (exception->delay) { | |
531 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
532 | goto out_retry; | |
533 | } | |
534 | if (exception->recovering) { | |
535 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
536 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
537 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
538 | goto out_retry; | |
539 | } | |
519ae255 | 540 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
541 | ret = -EIO; |
542 | return ret; | |
543 | out_retry: | |
a2c0b9e2 TM |
544 | if (ret == 0) |
545 | exception->retry = 1; | |
546 | return ret; | |
65de872e TM |
547 | } |
548 | ||
037fc980 TM |
549 | static int |
550 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, | |
551 | struct nfs4_state *state, long *timeout) | |
552 | { | |
553 | struct nfs4_exception exception = { | |
554 | .state = state, | |
555 | }; | |
556 | ||
557 | if (task->tk_status >= 0) | |
558 | return 0; | |
559 | if (timeout) | |
560 | exception.timeout = *timeout; | |
561 | task->tk_status = nfs4_async_handle_exception(task, server, | |
562 | task->tk_status, | |
563 | &exception); | |
564 | if (exception.delay && timeout) | |
565 | *timeout = exception.timeout; | |
566 | if (exception.retry) | |
567 | return -EAGAIN; | |
568 | return 0; | |
569 | } | |
570 | ||
a5250def WAA |
571 | /* |
572 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
573 | * or 'false' otherwise. | |
574 | */ | |
575 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
576 | { | |
577 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
578 | ||
579 | if (flavor == RPC_AUTH_GSS_KRB5I || | |
580 | flavor == RPC_AUTH_GSS_KRB5P) | |
581 | return true; | |
582 | ||
583 | return false; | |
584 | } | |
65de872e | 585 | |
452e9352 | 586 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 587 | { |
1da177e4 LT |
588 | spin_lock(&clp->cl_lock); |
589 | if (time_before(clp->cl_last_renewal,timestamp)) | |
590 | clp->cl_last_renewal = timestamp; | |
591 | spin_unlock(&clp->cl_lock); | |
592 | } | |
593 | ||
452e9352 TM |
594 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
595 | { | |
be824167 TM |
596 | struct nfs_client *clp = server->nfs_client; |
597 | ||
598 | if (!nfs4_has_session(clp)) | |
599 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
600 | } |
601 | ||
2a3eb2b9 CL |
602 | struct nfs4_call_sync_data { |
603 | const struct nfs_server *seq_server; | |
604 | struct nfs4_sequence_args *seq_args; | |
605 | struct nfs4_sequence_res *seq_res; | |
606 | }; | |
607 | ||
be3a5d23 TM |
608 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
609 | struct nfs4_sequence_res *res, int cache_reply) | |
a9c92d6b CL |
610 | { |
611 | args->sa_slot = NULL; | |
612 | args->sa_cache_this = cache_reply; | |
613 | args->sa_privileged = 0; | |
614 | ||
615 | res->sr_slot = NULL; | |
616 | } | |
617 | ||
618 | static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) | |
619 | { | |
620 | args->sa_privileged = 1; | |
621 | } | |
622 | ||
cb04ad2a PT |
623 | int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
624 | struct nfs4_sequence_args *args, | |
625 | struct nfs4_sequence_res *res, | |
626 | struct rpc_task *task) | |
3bd2384a | 627 | { |
3bd2384a CL |
628 | struct nfs4_slot *slot; |
629 | ||
630 | /* slot already allocated? */ | |
631 | if (res->sr_slot != NULL) | |
632 | goto out_start; | |
633 | ||
634 | spin_lock(&tbl->slot_tbl_lock); | |
635 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
636 | goto out_sleep; | |
637 | ||
638 | slot = nfs4_alloc_slot(tbl); | |
639 | if (IS_ERR(slot)) { | |
640 | if (slot == ERR_PTR(-ENOMEM)) | |
641 | task->tk_timeout = HZ >> 2; | |
642 | goto out_sleep; | |
643 | } | |
644 | spin_unlock(&tbl->slot_tbl_lock); | |
645 | ||
0a014a44 | 646 | slot->privileged = args->sa_privileged ? 1 : 0; |
3bd2384a CL |
647 | args->sa_slot = slot; |
648 | res->sr_slot = slot; | |
649 | ||
650 | out_start: | |
651 | rpc_call_start(task); | |
652 | return 0; | |
653 | ||
654 | out_sleep: | |
655 | if (args->sa_privileged) | |
656 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
657 | NULL, RPC_PRIORITY_PRIVILEGED); | |
658 | else | |
659 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
660 | spin_unlock(&tbl->slot_tbl_lock); | |
661 | return -EAGAIN; | |
662 | } | |
cb04ad2a | 663 | EXPORT_SYMBOL_GPL(nfs40_setup_sequence); |
3bd2384a | 664 | |
2e80dbe7 | 665 | static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) |
3bd2384a CL |
666 | { |
667 | struct nfs4_slot *slot = res->sr_slot; | |
668 | struct nfs4_slot_table *tbl; | |
669 | ||
3bd2384a CL |
670 | tbl = slot->table; |
671 | spin_lock(&tbl->slot_tbl_lock); | |
672 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
673 | nfs4_free_slot(tbl, slot); | |
674 | spin_unlock(&tbl->slot_tbl_lock); | |
675 | ||
676 | res->sr_slot = NULL; | |
2e80dbe7 TM |
677 | } |
678 | ||
679 | static int nfs40_sequence_done(struct rpc_task *task, | |
680 | struct nfs4_sequence_res *res) | |
681 | { | |
682 | if (res->sr_slot != NULL) | |
683 | nfs40_sequence_free_slot(res); | |
3bd2384a CL |
684 | return 1; |
685 | } | |
686 | ||
cccef3b9 AA |
687 | #if defined(CONFIG_NFS_V4_1) |
688 | ||
d185a334 | 689 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 690 | { |
e3725ec0 | 691 | struct nfs4_session *session; |
13615871 | 692 | struct nfs4_slot_table *tbl; |
a13ce7c6 | 693 | struct nfs4_slot *slot = res->sr_slot; |
c10e4498 | 694 | bool send_new_highest_used_slotid = false; |
13615871 | 695 | |
a13ce7c6 | 696 | tbl = slot->table; |
e3725ec0 | 697 | session = tbl->session; |
ea028ac9 | 698 | |
07e8dcbd TM |
699 | /* Bump the slot sequence number */ |
700 | if (slot->seq_done) | |
701 | slot->seq_nr++; | |
702 | slot->seq_done = 0; | |
703 | ||
35dc1d74 | 704 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
705 | /* Be nice to the server: try to ensure that the last transmitted |
706 | * value for highest_user_slotid <= target_highest_slotid | |
707 | */ | |
708 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
709 | send_new_highest_used_slotid = true; | |
710 | ||
a13ce7c6 | 711 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
712 | send_new_highest_used_slotid = false; |
713 | goto out_unlock; | |
714 | } | |
a13ce7c6 | 715 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
716 | |
717 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
718 | send_new_highest_used_slotid = false; | |
b75ad4cd | 719 | out_unlock: |
35dc1d74 | 720 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 721 | res->sr_slot = NULL; |
c10e4498 | 722 | if (send_new_highest_used_slotid) |
3f10a6af | 723 | nfs41_notify_server(session->clp); |
045d2a6d TM |
724 | if (waitqueue_active(&tbl->slot_waitq)) |
725 | wake_up_all(&tbl->slot_waitq); | |
13615871 AA |
726 | } |
727 | ||
2e80dbe7 TM |
728 | static int nfs41_sequence_process(struct rpc_task *task, |
729 | struct nfs4_sequence_res *res) | |
b0df806c | 730 | { |
e3725ec0 | 731 | struct nfs4_session *session; |
a13ce7c6 | 732 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 733 | struct nfs_client *clp; |
ac20d163 | 734 | bool interrupted = false; |
85563073 | 735 | int ret = 1; |
b0df806c | 736 | |
a13ce7c6 TM |
737 | if (slot == NULL) |
738 | goto out_noaction; | |
468f8613 BS |
739 | /* don't increment the sequence number if the task wasn't sent */ |
740 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
741 | goto out; |
742 | ||
e3725ec0 | 743 | session = slot->table->session; |
933602e3 | 744 | |
ac20d163 TM |
745 | if (slot->interrupted) { |
746 | slot->interrupted = 0; | |
747 | interrupted = true; | |
748 | } | |
749 | ||
2f92ae34 | 750 | trace_nfs4_sequence_done(session, res); |
691daf3b | 751 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
752 | switch (res->sr_status) { |
753 | case 0: | |
b0df806c | 754 | /* Update the slot's sequence and clientid lease timer */ |
07e8dcbd | 755 | slot->seq_done = 1; |
e3725ec0 | 756 | clp = session->clp; |
8e63b6a8 | 757 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 758 | /* Check sequence flags */ |
0a014a44 TM |
759 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags, |
760 | !!slot->privileged); | |
464ee9f9 | 761 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 762 | break; |
ac20d163 TM |
763 | case 1: |
764 | /* | |
765 | * sr_status remains 1 if an RPC level error occurred. | |
766 | * The server may or may not have processed the sequence | |
767 | * operation.. | |
768 | * Mark the slot as having hosted an interrupted RPC call. | |
769 | */ | |
770 | slot->interrupted = 1; | |
771 | goto out; | |
14516c3a TM |
772 | case -NFS4ERR_DELAY: |
773 | /* The server detected a resend of the RPC call and | |
774 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
775 | * of RFC5661. | |
776 | */ | |
df2fabff | 777 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 778 | __func__, |
df2fabff | 779 | slot->slot_nr, |
933602e3 | 780 | slot->seq_nr); |
14516c3a | 781 | goto out_retry; |
85563073 TM |
782 | case -NFS4ERR_BADSLOT: |
783 | /* | |
784 | * The slot id we used was probably retired. Try again | |
785 | * using a different slot id. | |
786 | */ | |
e8794440 TM |
787 | goto retry_nowait; |
788 | case -NFS4ERR_SEQ_MISORDERED: | |
ac20d163 TM |
789 | /* |
790 | * Was the last operation on this sequence interrupted? | |
791 | * If so, retry after bumping the sequence number. | |
792 | */ | |
793 | if (interrupted) { | |
794 | ++slot->seq_nr; | |
795 | goto retry_nowait; | |
796 | } | |
e8794440 TM |
797 | /* |
798 | * Could this slot have been previously retired? | |
799 | * If so, then the server may be expecting seq_nr = 1! | |
800 | */ | |
8e63b6a8 TM |
801 | if (slot->seq_nr != 1) { |
802 | slot->seq_nr = 1; | |
803 | goto retry_nowait; | |
804 | } | |
805 | break; | |
e8794440 TM |
806 | case -NFS4ERR_SEQ_FALSE_RETRY: |
807 | ++slot->seq_nr; | |
808 | goto retry_nowait; | |
14516c3a TM |
809 | default: |
810 | /* Just update the slot sequence no. */ | |
07e8dcbd | 811 | slot->seq_done = 1; |
b0df806c AA |
812 | } |
813 | out: | |
814 | /* The session may be reset by one of the error handlers. */ | |
815 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
a13ce7c6 | 816 | out_noaction: |
85563073 | 817 | return ret; |
e8794440 TM |
818 | retry_nowait: |
819 | if (rpc_restart_call_prepare(task)) { | |
2e80dbe7 | 820 | nfs41_sequence_free_slot(res); |
e8794440 TM |
821 | task->tk_status = 0; |
822 | ret = 0; | |
823 | } | |
824 | goto out; | |
14516c3a | 825 | out_retry: |
d05dd4e9 | 826 | if (!rpc_restart_call(task)) |
14516c3a TM |
827 | goto out; |
828 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
829 | return 0; | |
b0df806c | 830 | } |
2e80dbe7 TM |
831 | |
832 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) | |
833 | { | |
834 | if (!nfs41_sequence_process(task, res)) | |
835 | return 0; | |
836 | if (res->sr_slot != NULL) | |
837 | nfs41_sequence_free_slot(res); | |
838 | return 1; | |
839 | ||
840 | } | |
f9c96fcc | 841 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 842 | |
2e80dbe7 TM |
843 | static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) |
844 | { | |
845 | if (res->sr_slot == NULL) | |
846 | return 1; | |
847 | if (res->sr_slot->table->session != NULL) | |
848 | return nfs41_sequence_process(task, res); | |
849 | return nfs40_sequence_done(task, res); | |
850 | } | |
851 | ||
852 | static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) | |
853 | { | |
854 | if (res->sr_slot != NULL) { | |
855 | if (res->sr_slot->table->session != NULL) | |
856 | nfs41_sequence_free_slot(res); | |
857 | else | |
858 | nfs40_sequence_free_slot(res); | |
859 | } | |
860 | } | |
861 | ||
2c4b131d | 862 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 863 | { |
e3725ec0 | 864 | if (res->sr_slot == NULL) |
14516c3a | 865 | return 1; |
3bd2384a CL |
866 | if (!res->sr_slot->table->session) |
867 | return nfs40_sequence_done(task, res); | |
14516c3a | 868 | return nfs41_sequence_done(task, res); |
df896455 | 869 | } |
2c4b131d | 870 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 871 | |
dc70d7b3 | 872 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
873 | struct nfs4_sequence_args *args, |
874 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
875 | struct rpc_task *task) |
876 | { | |
fbcd4abc AA |
877 | struct nfs4_slot *slot; |
878 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
879 | |
880 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 881 | /* slot already allocated? */ |
dfb4f309 | 882 | if (res->sr_slot != NULL) |
d9afbd1b | 883 | goto out_success; |
ce5039c1 | 884 | |
fbcd4abc AA |
885 | tbl = &session->fc_slot_table; |
886 | ||
69d206b5 TM |
887 | task->tk_timeout = 0; |
888 | ||
fbcd4abc | 889 | spin_lock(&tbl->slot_tbl_lock); |
774d5f14 | 890 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && |
8fe72bac | 891 | !args->sa_privileged) { |
0b1c8fc4 | 892 | /* The state manager will wait until the slot table is empty */ |
0b1c8fc4 | 893 | dprintk("%s session is draining\n", __func__); |
7b939a3f | 894 | goto out_sleep; |
689cf5c1 AB |
895 | } |
896 | ||
2dc03b7f | 897 | slot = nfs4_alloc_slot(tbl); |
69d206b5 TM |
898 | if (IS_ERR(slot)) { |
899 | /* If out of memory, try again in 1/4 second */ | |
900 | if (slot == ERR_PTR(-ENOMEM)) | |
901 | task->tk_timeout = HZ >> 2; | |
fbcd4abc | 902 | dprintk("<-- %s: no free slots\n", __func__); |
7b939a3f | 903 | goto out_sleep; |
fbcd4abc AA |
904 | } |
905 | spin_unlock(&tbl->slot_tbl_lock); | |
906 | ||
0a014a44 | 907 | slot->privileged = args->sa_privileged ? 1 : 0; |
2b2fa717 | 908 | args->sa_slot = slot; |
fbcd4abc | 909 | |
e8d92382 | 910 | dprintk("<-- %s slotid=%u seqid=%u\n", __func__, |
2dc03b7f | 911 | slot->slot_nr, slot->seq_nr); |
fbcd4abc | 912 | |
dfb4f309 | 913 | res->sr_slot = slot; |
8e63b6a8 | 914 | res->sr_timestamp = jiffies; |
2a6e26cd | 915 | res->sr_status_flags = 0; |
fbcd4abc AA |
916 | /* |
917 | * sr_status is only set in decode_sequence, and so will remain | |
918 | * set to 1 if an rpc level failure occurs. | |
919 | */ | |
920 | res->sr_status = 1; | |
2f92ae34 | 921 | trace_nfs4_setup_sequence(session, args); |
d9afbd1b TM |
922 | out_success: |
923 | rpc_call_start(task); | |
ce5039c1 | 924 | return 0; |
7b939a3f | 925 | out_sleep: |
8fe72bac TM |
926 | /* Privileged tasks are queued with top priority */ |
927 | if (args->sa_privileged) | |
1e1093c7 TM |
928 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, |
929 | NULL, RPC_PRIORITY_PRIVILEGED); | |
930 | else | |
931 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
7b939a3f TM |
932 | spin_unlock(&tbl->slot_tbl_lock); |
933 | return -EAGAIN; | |
ce5039c1 | 934 | } |
dc70d7b3 | 935 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 936 | |
5a580e0a CL |
937 | static int nfs4_setup_sequence(const struct nfs_server *server, |
938 | struct nfs4_sequence_args *args, | |
939 | struct nfs4_sequence_res *res, | |
940 | struct rpc_task *task) | |
ce5039c1 | 941 | { |
035168ab | 942 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
943 | int ret = 0; |
944 | ||
3bd2384a | 945 | if (!session) |
cb04ad2a PT |
946 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
947 | args, res, task); | |
035168ab | 948 | |
e8d92382 | 949 | dprintk("--> %s clp %p session %p sr_slot %u\n", |
dfb4f309 | 950 | __func__, session->clp, session, res->sr_slot ? |
e8d92382 | 951 | res->sr_slot->slot_nr : NFS4_NO_SLOT); |
ce5039c1 | 952 | |
9d12b216 | 953 | ret = nfs41_setup_sequence(session, args, res, task); |
3bd2384a | 954 | |
ce5039c1 AA |
955 | dprintk("<-- %s status=%d\n", __func__, ret); |
956 | return ret; | |
957 | } | |
958 | ||
ce5039c1 AA |
959 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
960 | { | |
2a3eb2b9 | 961 | struct nfs4_call_sync_data *data = calldata; |
6ba7db34 | 962 | struct nfs4_session *session = nfs4_get_session(data->seq_server); |
ce5039c1 | 963 | |
035168ab TM |
964 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
965 | ||
d9afbd1b | 966 | nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); |
ce5039c1 AA |
967 | } |
968 | ||
69ab40c4 AA |
969 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
970 | { | |
2a3eb2b9 | 971 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 972 | |
14516c3a | 973 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
974 | } |
975 | ||
17280175 | 976 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 977 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 978 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
979 | }; |
980 | ||
3bd2384a CL |
981 | #else /* !CONFIG_NFS_V4_1 */ |
982 | ||
9915ea7e CL |
983 | static int nfs4_setup_sequence(const struct nfs_server *server, |
984 | struct nfs4_sequence_args *args, | |
985 | struct nfs4_sequence_res *res, | |
986 | struct rpc_task *task) | |
987 | { | |
cb04ad2a PT |
988 | return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
989 | args, res, task); | |
9915ea7e CL |
990 | } |
991 | ||
2e80dbe7 TM |
992 | static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) |
993 | { | |
994 | return nfs40_sequence_done(task, res); | |
995 | } | |
996 | ||
997 | static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) | |
998 | { | |
999 | if (res->sr_slot != NULL) | |
1000 | nfs40_sequence_free_slot(res); | |
1001 | } | |
1002 | ||
2c4b131d PT |
1003 | int nfs4_sequence_done(struct rpc_task *task, |
1004 | struct nfs4_sequence_res *res) | |
9915ea7e | 1005 | { |
3bd2384a | 1006 | return nfs40_sequence_done(task, res); |
9915ea7e | 1007 | } |
2c4b131d | 1008 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
1009 | |
1010 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e CL |
1011 | |
1012 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) | |
1013 | { | |
1014 | struct nfs4_call_sync_data *data = calldata; | |
1015 | nfs4_setup_sequence(data->seq_server, | |
1016 | data->seq_args, data->seq_res, task); | |
1017 | } | |
1018 | ||
1019 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
1020 | { | |
1021 | struct nfs4_call_sync_data *data = calldata; | |
1022 | nfs4_sequence_done(task, data->seq_res); | |
1023 | } | |
1024 | ||
1025 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
1026 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
1027 | .rpc_call_done = nfs40_call_sync_done, | |
1028 | }; | |
1029 | ||
7c513058 BS |
1030 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
1031 | struct nfs_server *server, | |
ce5039c1 AA |
1032 | struct rpc_message *msg, |
1033 | struct nfs4_sequence_args *args, | |
8fe72bac | 1034 | struct nfs4_sequence_res *res) |
ce5039c1 AA |
1035 | { |
1036 | int ret; | |
1037 | struct rpc_task *task; | |
9915ea7e | 1038 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 1039 | struct nfs4_call_sync_data data = { |
035168ab | 1040 | .seq_server = server, |
ce5039c1 AA |
1041 | .seq_args = args, |
1042 | .seq_res = res, | |
ce5039c1 AA |
1043 | }; |
1044 | struct rpc_task_setup task_setup = { | |
7c513058 | 1045 | .rpc_client = clnt, |
ce5039c1 | 1046 | .rpc_message = msg, |
9915ea7e | 1047 | .callback_ops = clp->cl_mvops->call_sync_ops, |
ce5039c1 AA |
1048 | .callback_data = &data |
1049 | }; | |
1050 | ||
ce5039c1 AA |
1051 | task = rpc_run_task(&task_setup); |
1052 | if (IS_ERR(task)) | |
1053 | ret = PTR_ERR(task); | |
1054 | else { | |
1055 | ret = task->tk_status; | |
1056 | rpc_put_task(task); | |
1057 | } | |
1058 | return ret; | |
1059 | } | |
1060 | ||
7c513058 BS |
1061 | int nfs4_call_sync(struct rpc_clnt *clnt, |
1062 | struct nfs_server *server, | |
e73b83f2 BS |
1063 | struct rpc_message *msg, |
1064 | struct nfs4_sequence_args *args, | |
1065 | struct nfs4_sequence_res *res, | |
1066 | int cache_reply) | |
1067 | { | |
a9c92d6b | 1068 | nfs4_init_sequence(args, res, cache_reply); |
9915ea7e | 1069 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 1070 | } |
cccef3b9 | 1071 | |
38478b24 | 1072 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 1073 | { |
38478b24 | 1074 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 1075 | |
38478b24 | 1076 | spin_lock(&dir->i_lock); |
359d7d1c | 1077 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 1078 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 1079 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 1080 | dir->i_version = cinfo->after; |
3235b403 | 1081 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
de242c0b | 1082 | nfs_fscache_invalidate(dir); |
38478b24 | 1083 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
1084 | } |
1085 | ||
e56e0b78 | 1086 | struct nfs4_opendata { |
c6d00e63 | 1087 | struct kref kref; |
e56e0b78 TM |
1088 | struct nfs_openargs o_arg; |
1089 | struct nfs_openres o_res; | |
cdd4e68b TM |
1090 | struct nfs_open_confirmargs c_arg; |
1091 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
1092 | struct nfs4_string owner_name; |
1093 | struct nfs4_string group_name; | |
a49c2691 | 1094 | struct nfs4_label *a_label; |
e56e0b78 | 1095 | struct nfs_fattr f_attr; |
1775fd3e | 1096 | struct nfs4_label *f_label; |
e56e0b78 | 1097 | struct dentry *dir; |
82a2c1b7 | 1098 | struct dentry *dentry; |
e56e0b78 | 1099 | struct nfs4_state_owner *owner; |
aac00a8d | 1100 | struct nfs4_state *state; |
e56e0b78 | 1101 | struct iattr attrs; |
26e976a8 | 1102 | unsigned long timestamp; |
3e309914 | 1103 | unsigned int rpc_done : 1; |
5bc2afc2 | 1104 | unsigned int file_created : 1; |
bdeca1b7 | 1105 | unsigned int is_recover : 1; |
24ac23ab TM |
1106 | int rpc_status; |
1107 | int cancelled; | |
e56e0b78 TM |
1108 | }; |
1109 | ||
49f9a0fa TM |
1110 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1111 | int err, struct nfs4_exception *exception) | |
1112 | { | |
1113 | if (err != -EINVAL) | |
1114 | return false; | |
1115 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1116 | return false; | |
1117 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1118 | exception->retry = 1; | |
1119 | return true; | |
1120 | } | |
1121 | ||
6ae37339 TM |
1122 | static u32 |
1123 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1124 | fmode_t fmode, int openflags) | |
1125 | { | |
1126 | u32 res = 0; | |
1127 | ||
1128 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1129 | case FMODE_READ: | |
1130 | res = NFS4_SHARE_ACCESS_READ; | |
1131 | break; | |
1132 | case FMODE_WRITE: | |
1133 | res = NFS4_SHARE_ACCESS_WRITE; | |
1134 | break; | |
1135 | case FMODE_READ|FMODE_WRITE: | |
1136 | res = NFS4_SHARE_ACCESS_BOTH; | |
1137 | } | |
1138 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1139 | goto out; | |
1140 | /* Want no delegation if we're using O_DIRECT */ | |
1141 | if (openflags & O_DIRECT) | |
1142 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1143 | out: | |
1144 | return res; | |
1145 | } | |
1146 | ||
49f9a0fa TM |
1147 | static enum open_claim_type4 |
1148 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1149 | enum open_claim_type4 claim) | |
1150 | { | |
1151 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1152 | return claim; | |
1153 | switch (claim) { | |
1154 | default: | |
1155 | return claim; | |
1156 | case NFS4_OPEN_CLAIM_FH: | |
1157 | return NFS4_OPEN_CLAIM_NULL; | |
1158 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1159 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1160 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1161 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1162 | } | |
1163 | } | |
2ced46c2 TM |
1164 | |
1165 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1166 | { | |
1167 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1168 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1169 | p->o_res.seqid = p->o_arg.seqid; |
1170 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1171 | p->o_res.server = p->o_arg.server; |
5f657530 | 1172 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1173 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1174 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1175 | } |
1176 | ||
82a2c1b7 | 1177 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1178 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be | 1179 | const struct iattr *attrs, |
1775fd3e | 1180 | struct nfs4_label *label, |
4a1c0893 | 1181 | enum open_claim_type4 claim, |
8535b2be | 1182 | gfp_t gfp_mask) |
e56e0b78 | 1183 | { |
82a2c1b7 | 1184 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1185 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1186 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1187 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
e56e0b78 TM |
1188 | struct nfs4_opendata *p; |
1189 | ||
8535b2be | 1190 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1191 | if (p == NULL) |
1192 | goto err; | |
14c43f76 DQ |
1193 | |
1194 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1195 | if (IS_ERR(p->f_label)) | |
1196 | goto err_free_p; | |
1197 | ||
a49c2691 KM |
1198 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1199 | if (IS_ERR(p->a_label)) | |
1200 | goto err_free_f; | |
1201 | ||
63f5f796 TM |
1202 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1203 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1204 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1205 | goto err_free_label; |
82a2c1b7 AV |
1206 | nfs_sb_active(dentry->d_sb); |
1207 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1208 | p->dir = parent; |
1209 | p->owner = sp; | |
1210 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1211 | p->o_arg.open_flags = flags; |
1212 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
6ae37339 TM |
1213 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1214 | fmode, flags); | |
ae2bb032 WAA |
1215 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1216 | * will return permission denied for all bits until close */ | |
1217 | if (!(flags & O_EXCL)) { | |
1218 | /* ask server to check for all possible rights as results | |
1219 | * are cached */ | |
1220 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
1221 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 1222 | } |
7539bbab | 1223 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1224 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1225 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1226 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1227 | p->o_arg.server = server; |
aa9c2669 | 1228 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1229 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
a49c2691 | 1230 | p->o_arg.label = nfs4_label_copy(p->a_label, label); |
49f9a0fa TM |
1231 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
1232 | switch (p->o_arg.claim) { | |
4a1c0893 TM |
1233 | case NFS4_OPEN_CLAIM_NULL: |
1234 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1235 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1236 | p->o_arg.fh = NFS_FH(dir); | |
1237 | break; | |
1238 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1239 | case NFS4_OPEN_CLAIM_FH: | |
1240 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1241 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1242 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1243 | } |
536e43d1 | 1244 | if (attrs != NULL && attrs->ia_valid != 0) { |
c281fa9c | 1245 | __u32 verf[2]; |
d77d76ff | 1246 | |
e56e0b78 TM |
1247 | p->o_arg.u.attrs = &p->attrs; |
1248 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1249 | |
1250 | verf[0] = jiffies; | |
1251 | verf[1] = current->pid; | |
1252 | memcpy(p->o_arg.u.verifier.data, verf, | |
1253 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1254 | } |
cdd4e68b TM |
1255 | p->c_arg.fh = &p->o_res.fh; |
1256 | p->c_arg.stateid = &p->o_res.stateid; | |
1257 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1258 | nfs4_init_opendata_res(p); |
c6d00e63 | 1259 | kref_init(&p->kref); |
e56e0b78 | 1260 | return p; |
14c43f76 DQ |
1261 | |
1262 | err_free_label: | |
a49c2691 KM |
1263 | nfs4_label_free(p->a_label); |
1264 | err_free_f: | |
14c43f76 DQ |
1265 | nfs4_label_free(p->f_label); |
1266 | err_free_p: | |
e56e0b78 TM |
1267 | kfree(p); |
1268 | err: | |
1269 | dput(parent); | |
1270 | return NULL; | |
1271 | } | |
1272 | ||
c6d00e63 | 1273 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1274 | { |
c6d00e63 TM |
1275 | struct nfs4_opendata *p = container_of(kref, |
1276 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1277 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1278 | |
1279 | nfs_free_seqid(p->o_arg.seqid); | |
2e80dbe7 | 1280 | nfs4_sequence_free_slot(&p->o_res.seq_res); |
aac00a8d TM |
1281 | if (p->state != NULL) |
1282 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1283 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1284 | |
a49c2691 | 1285 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1286 | nfs4_label_free(p->f_label); |
1287 | ||
c6d00e63 | 1288 | dput(p->dir); |
82a2c1b7 AV |
1289 | dput(p->dentry); |
1290 | nfs_sb_deactive(sb); | |
6926afd1 | 1291 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1292 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1293 | kfree(p); |
1294 | } | |
1295 | ||
1296 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1297 | { | |
1298 | if (p != NULL) | |
1299 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1300 | } |
1301 | ||
06f814a3 TM |
1302 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1303 | { | |
06f814a3 TM |
1304 | int ret; |
1305 | ||
06f814a3 | 1306 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1307 | return ret; |
1308 | } | |
1309 | ||
24311f88 TM |
1310 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1311 | fmode_t fmode) | |
1312 | { | |
1313 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1314 | case FMODE_READ|FMODE_WRITE: | |
1315 | return state->n_rdwr != 0; | |
1316 | case FMODE_WRITE: | |
1317 | return state->n_wronly != 0; | |
1318 | case FMODE_READ: | |
1319 | return state->n_rdonly != 0; | |
1320 | } | |
1321 | WARN_ON_ONCE(1); | |
1322 | return false; | |
1323 | } | |
1324 | ||
dc0b027d | 1325 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1326 | { |
1327 | int ret = 0; | |
dc0b027d | 1328 | |
536e43d1 | 1329 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1330 | goto out; |
1331 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1332 | case FMODE_READ: |
88069f77 TM |
1333 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1334 | && state->n_rdonly != 0; | |
6ee41268 TM |
1335 | break; |
1336 | case FMODE_WRITE: | |
88069f77 TM |
1337 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1338 | && state->n_wronly != 0; | |
6ee41268 TM |
1339 | break; |
1340 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1341 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1342 | && state->n_rdwr != 0; | |
6ee41268 | 1343 | } |
dc0b027d | 1344 | out: |
6ee41268 TM |
1345 | return ret; |
1346 | } | |
1347 | ||
2a606188 TM |
1348 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1349 | enum open_claim_type4 claim) | |
aac00a8d | 1350 | { |
652f89f6 TM |
1351 | if (delegation == NULL) |
1352 | return 0; | |
dc0b027d | 1353 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1354 | return 0; |
d25be546 TM |
1355 | if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) |
1356 | return 0; | |
2a606188 TM |
1357 | switch (claim) { |
1358 | case NFS4_OPEN_CLAIM_NULL: | |
1359 | case NFS4_OPEN_CLAIM_FH: | |
1360 | break; | |
1361 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1362 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1363 | break; | |
1364 | default: | |
1365 | return 0; | |
1366 | } | |
b7391f44 | 1367 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1368 | return 1; |
1369 | } | |
1370 | ||
dc0b027d | 1371 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1372 | { |
dc0b027d | 1373 | switch (fmode) { |
e7616923 TM |
1374 | case FMODE_WRITE: |
1375 | state->n_wronly++; | |
1376 | break; | |
1377 | case FMODE_READ: | |
1378 | state->n_rdonly++; | |
1379 | break; | |
1380 | case FMODE_READ|FMODE_WRITE: | |
1381 | state->n_rdwr++; | |
1382 | } | |
dc0b027d | 1383 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1384 | } |
1385 | ||
4f14c194 TM |
1386 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1387 | { | |
1388 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1389 | bool need_recover = false; | |
1390 | ||
1391 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1392 | need_recover = true; | |
1393 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1394 | need_recover = true; | |
1395 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1396 | need_recover = true; | |
1397 | if (need_recover) | |
1398 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1399 | } | |
1400 | ||
e999e80e TM |
1401 | static bool nfs_need_update_open_stateid(struct nfs4_state *state, |
1402 | nfs4_stateid *stateid) | |
1403 | { | |
1404 | if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) | |
1405 | return true; | |
4f14c194 TM |
1406 | if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1407 | nfs_test_and_clear_all_open_stateid(state); | |
e999e80e | 1408 | return true; |
4f14c194 | 1409 | } |
e999e80e TM |
1410 | if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) |
1411 | return true; | |
1412 | return false; | |
1413 | } | |
1414 | ||
f95549cf TM |
1415 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1416 | { | |
3c38cbe2 TM |
1417 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1418 | return; | |
f95549cf TM |
1419 | if (state->n_wronly) |
1420 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1421 | if (state->n_rdonly) | |
1422 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1423 | if (state->n_rdwr) | |
1424 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1425 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1426 | } |
1427 | ||
226056c5 | 1428 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
4a1e2feb | 1429 | nfs4_stateid *arg_stateid, |
226056c5 | 1430 | nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1431 | { |
226056c5 TM |
1432 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1433 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1434 | case FMODE_WRITE: | |
1435 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1436 | break; | |
1437 | case FMODE_READ: | |
1438 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1439 | break; | |
1440 | case 0: | |
1441 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1442 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1443 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1444 | } | |
1445 | if (stateid == NULL) | |
1446 | return; | |
f95549cf | 1447 | /* Handle races with OPEN */ |
4a1e2feb TM |
1448 | if (!nfs4_stateid_match_other(arg_stateid, &state->open_stateid) || |
1449 | (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1450 | !nfs4_stateid_is_newer(stateid, &state->open_stateid))) { | |
f95549cf | 1451 | nfs_resync_open_stateid_locked(state); |
226056c5 | 1452 | return; |
f95549cf | 1453 | } |
003707c7 | 1454 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1455 | nfs4_stateid_copy(&state->stateid, stateid); |
1456 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
226056c5 TM |
1457 | } |
1458 | ||
4a1e2feb TM |
1459 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1460 | nfs4_stateid *arg_stateid, | |
1461 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1462 | { |
1463 | write_seqlock(&state->seqlock); | |
4a1e2feb | 1464 | nfs_clear_open_stateid_locked(state, arg_stateid, stateid, fmode); |
226056c5 | 1465 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1466 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1467 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1468 | } |
1469 | ||
dc0b027d | 1470 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1471 | { |
dc0b027d | 1472 | switch (fmode) { |
003707c7 TM |
1473 | case FMODE_READ: |
1474 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1475 | break; | |
1476 | case FMODE_WRITE: | |
1477 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1478 | break; | |
1479 | case FMODE_READ|FMODE_WRITE: | |
1480 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1481 | } | |
e999e80e TM |
1482 | if (!nfs_need_update_open_stateid(state, stateid)) |
1483 | return; | |
1484 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1485 | nfs4_stateid_copy(&state->stateid, stateid); | |
1486 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
003707c7 TM |
1487 | } |
1488 | ||
dc0b027d | 1489 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1490 | { |
8bda4e4c TM |
1491 | /* |
1492 | * Protect the call to nfs4_state_set_mode_locked and | |
1493 | * serialise the stateid update | |
1494 | */ | |
361cad3c | 1495 | spin_lock(&state->owner->so_lock); |
8bda4e4c | 1496 | write_seqlock(&state->seqlock); |
003707c7 | 1497 | if (deleg_stateid != NULL) { |
f597c537 | 1498 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1499 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1500 | } | |
1501 | if (open_stateid != NULL) | |
dc0b027d | 1502 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c | 1503 | write_sequnlock(&state->seqlock); |
dc0b027d | 1504 | update_open_stateflags(state, fmode); |
ec073428 | 1505 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1506 | } |
1507 | ||
dc0b027d | 1508 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1509 | { |
1510 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1511 | struct nfs_delegation *deleg_cur; | |
1512 | int ret = 0; | |
1513 | ||
dc0b027d | 1514 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1515 | |
1516 | rcu_read_lock(); | |
1517 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1518 | if (deleg_cur == NULL) | |
1519 | goto no_delegation; | |
1520 | ||
1521 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1522 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1523 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1524 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1525 | goto no_delegation_unlock; |
1526 | ||
1527 | if (delegation == NULL) | |
1528 | delegation = &deleg_cur->stateid; | |
f597c537 | 1529 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1530 | goto no_delegation_unlock; |
1531 | ||
b7391f44 | 1532 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1533 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1534 | ret = 1; |
1535 | no_delegation_unlock: | |
1536 | spin_unlock(&deleg_cur->lock); | |
1537 | no_delegation: | |
1538 | rcu_read_unlock(); | |
1539 | ||
1540 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1541 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1542 | ret = 1; |
1543 | } | |
4f14c194 TM |
1544 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1545 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
34310430 TM |
1546 | |
1547 | return ret; | |
1548 | } | |
1549 | ||
39071e6f TM |
1550 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1551 | const nfs4_stateid *stateid) | |
1552 | { | |
1553 | struct nfs4_state *state = lsp->ls_state; | |
1554 | bool ret = false; | |
1555 | ||
1556 | spin_lock(&state->state_lock); | |
1557 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1558 | goto out_noupdate; | |
1559 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1560 | goto out_noupdate; | |
1561 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1562 | ret = true; | |
1563 | out_noupdate: | |
1564 | spin_unlock(&state->state_lock); | |
1565 | return ret; | |
1566 | } | |
34310430 | 1567 | |
dc0b027d | 1568 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1569 | { |
1570 | struct nfs_delegation *delegation; | |
1571 | ||
1572 | rcu_read_lock(); | |
1573 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1574 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1575 | rcu_read_unlock(); |
1576 | return; | |
1577 | } | |
1578 | rcu_read_unlock(); | |
57ec14c5 | 1579 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1580 | } |
1581 | ||
6ee41268 | 1582 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1583 | { |
1584 | struct nfs4_state *state = opendata->state; | |
1585 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1586 | struct nfs_delegation *delegation; | |
f448badd | 1587 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1588 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1589 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1590 | nfs4_stateid stateid; |
1591 | int ret = -EAGAIN; | |
1592 | ||
aac00a8d | 1593 | for (;;) { |
61beef75 | 1594 | spin_lock(&state->owner->so_lock); |
dc0b027d | 1595 | if (can_open_cached(state, fmode, open_mode)) { |
61beef75 | 1596 | update_open_stateflags(state, fmode); |
6ee41268 | 1597 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1598 | goto out_return_state; |
6ee41268 | 1599 | } |
61beef75 | 1600 | spin_unlock(&state->owner->so_lock); |
34310430 TM |
1601 | rcu_read_lock(); |
1602 | delegation = rcu_dereference(nfsi->delegation); | |
2a606188 | 1603 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1604 | rcu_read_unlock(); |
aac00a8d | 1605 | break; |
34310430 | 1606 | } |
aac00a8d | 1607 | /* Save the delegation */ |
f597c537 | 1608 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1609 | rcu_read_unlock(); |
fa332941 | 1610 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1611 | if (!opendata->is_recover) { |
1612 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1613 | if (ret != 0) | |
1614 | goto out; | |
1615 | } | |
aac00a8d | 1616 | ret = -EAGAIN; |
34310430 TM |
1617 | |
1618 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1619 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1620 | goto out_return_state; |
aac00a8d | 1621 | } |
aac00a8d TM |
1622 | out: |
1623 | return ERR_PTR(ret); | |
1624 | out_return_state: | |
1625 | atomic_inc(&state->count); | |
1626 | return state; | |
1627 | } | |
1628 | ||
e23008ec AA |
1629 | static void |
1630 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1631 | { | |
1632 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1633 | struct nfs_delegation *delegation; | |
1634 | int delegation_flags = 0; | |
1635 | ||
1636 | rcu_read_lock(); | |
1637 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1638 | if (delegation) | |
1639 | delegation_flags = delegation->flags; | |
1640 | rcu_read_unlock(); | |
72d79ff8 TM |
1641 | switch (data->o_arg.claim) { |
1642 | default: | |
1643 | break; | |
1644 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1645 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1646 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1647 | "returning a delegation for " | |
1648 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1649 | clp->cl_hostname); | |
72d79ff8 TM |
1650 | return; |
1651 | } | |
1652 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec AA |
1653 | nfs_inode_set_delegation(state->inode, |
1654 | data->owner->so_cred, | |
1655 | &data->o_res); | |
1656 | else | |
1657 | nfs_inode_reclaim_delegation(state->inode, | |
1658 | data->owner->so_cred, | |
1659 | &data->o_res); | |
1660 | } | |
1661 | ||
1662 | /* | |
1663 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1664 | * and update the nfs4_state. | |
1665 | */ | |
1666 | static struct nfs4_state * | |
1667 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1668 | { | |
1669 | struct inode *inode = data->state->inode; | |
1670 | struct nfs4_state *state = data->state; | |
1671 | int ret; | |
1672 | ||
d2bfda2e WAA |
1673 | if (!data->rpc_done) { |
1674 | if (data->rpc_status) { | |
1675 | ret = data->rpc_status; | |
1676 | goto err; | |
1677 | } | |
1678 | /* cached opens have already been processed */ | |
1679 | goto update; | |
e23008ec AA |
1680 | } |
1681 | ||
e23008ec AA |
1682 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1683 | if (ret) | |
1684 | goto err; | |
1685 | ||
1686 | if (data->o_res.delegation_type != 0) | |
1687 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1688 | update: |
e23008ec AA |
1689 | update_open_stateid(state, &data->o_res.stateid, NULL, |
1690 | data->o_arg.fmode); | |
d49f042a | 1691 | atomic_inc(&state->count); |
e23008ec AA |
1692 | |
1693 | return state; | |
1694 | err: | |
1695 | return ERR_PTR(ret); | |
1696 | ||
1697 | } | |
1698 | ||
1699 | static struct nfs4_state * | |
1700 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1701 | { |
1702 | struct inode *inode; | |
1703 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1704 | int ret; |
24ac23ab | 1705 | |
aac00a8d | 1706 | if (!data->rpc_done) { |
6ee41268 | 1707 | state = nfs4_try_open_cached(data); |
9759b0fb | 1708 | trace_nfs4_cached_open(data->state); |
aac00a8d TM |
1709 | goto out; |
1710 | } | |
1711 | ||
1b370bc2 | 1712 | ret = -EAGAIN; |
24ac23ab | 1713 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1714 | goto err; |
1775fd3e | 1715 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label); |
1b370bc2 | 1716 | ret = PTR_ERR(inode); |
03f28e3a | 1717 | if (IS_ERR(inode)) |
1b370bc2 TM |
1718 | goto err; |
1719 | ret = -ENOMEM; | |
24ac23ab TM |
1720 | state = nfs4_get_open_state(inode, data->owner); |
1721 | if (state == NULL) | |
1b370bc2 | 1722 | goto err_put_inode; |
e23008ec AA |
1723 | if (data->o_res.delegation_type != 0) |
1724 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1725 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1726 | data->o_arg.fmode); |
24ac23ab | 1727 | iput(inode); |
aac00a8d | 1728 | out: |
7aa262b5 | 1729 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab | 1730 | return state; |
1b370bc2 TM |
1731 | err_put_inode: |
1732 | iput(inode); | |
1733 | err: | |
1734 | return ERR_PTR(ret); | |
24ac23ab TM |
1735 | } |
1736 | ||
e23008ec AA |
1737 | static struct nfs4_state * |
1738 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1739 | { | |
2e80dbe7 TM |
1740 | struct nfs4_state *ret; |
1741 | ||
e23008ec | 1742 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) |
2e80dbe7 TM |
1743 | ret =_nfs4_opendata_reclaim_to_nfs4_state(data); |
1744 | else | |
1745 | ret = _nfs4_opendata_to_nfs4_state(data); | |
1746 | nfs4_sequence_free_slot(&data->o_res.seq_res); | |
1747 | return ret; | |
e23008ec AA |
1748 | } |
1749 | ||
864472e9 TM |
1750 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1751 | { | |
1752 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1753 | struct nfs_open_context *ctx; | |
1754 | ||
1755 | spin_lock(&state->inode->i_lock); | |
1756 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1757 | if (ctx->state != state) | |
1758 | continue; | |
1759 | get_nfs_open_context(ctx); | |
1760 | spin_unlock(&state->inode->i_lock); | |
1761 | return ctx; | |
1762 | } | |
1763 | spin_unlock(&state->inode->i_lock); | |
1764 | return ERR_PTR(-ENOENT); | |
1765 | } | |
1766 | ||
4a1c0893 TM |
1767 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
1768 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
1769 | { |
1770 | struct nfs4_opendata *opendata; | |
1771 | ||
4a1c0893 | 1772 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
1775fd3e | 1773 | NULL, NULL, claim, GFP_NOFS); |
6f220ed5 TM |
1774 | if (opendata == NULL) |
1775 | return ERR_PTR(-ENOMEM); | |
1776 | opendata->state = state; | |
1777 | atomic_inc(&state->count); | |
1778 | return opendata; | |
1779 | } | |
1780 | ||
24311f88 TM |
1781 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
1782 | fmode_t fmode) | |
864472e9 | 1783 | { |
2ced46c2 | 1784 | struct nfs4_state *newstate; |
864472e9 TM |
1785 | int ret; |
1786 | ||
24311f88 | 1787 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 1788 | return 0; |
dc0b027d TM |
1789 | opendata->o_arg.open_flags = 0; |
1790 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
1791 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
1792 | NFS_SB(opendata->dentry->d_sb), | |
1793 | fmode, 0); | |
2ced46c2 TM |
1794 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1795 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1796 | nfs4_init_opendata_res(opendata); | |
b257957e | 1797 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1798 | if (ret != 0) |
1799 | return ret; | |
2ced46c2 | 1800 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1801 | if (IS_ERR(newstate)) |
1802 | return PTR_ERR(newstate); | |
24311f88 TM |
1803 | if (newstate != opendata->state) |
1804 | ret = -ESTALE; | |
643168c2 | 1805 | nfs4_close_state(newstate, fmode); |
24311f88 | 1806 | return ret; |
864472e9 TM |
1807 | } |
1808 | ||
1809 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1810 | { | |
864472e9 TM |
1811 | int ret; |
1812 | ||
4f14c194 TM |
1813 | /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ |
1814 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1815 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1816 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
864472e9 | 1817 | /* memory barrier prior to reading state->n_* */ |
2ced46c2 | 1818 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
fd068b20 | 1819 | clear_bit(NFS_OPEN_STATE, &state->flags); |
864472e9 | 1820 | smp_rmb(); |
24311f88 TM |
1821 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
1822 | if (ret != 0) | |
1823 | return ret; | |
1824 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1825 | if (ret != 0) | |
1826 | return ret; | |
1827 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1828 | if (ret != 0) | |
1829 | return ret; | |
1ac7e2fd TM |
1830 | /* |
1831 | * We may have performed cached opens for all three recoveries. | |
1832 | * Check if we need to update the current stateid. | |
1833 | */ | |
1834 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1835 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1836 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1837 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1838 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1839 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1840 | } |
864472e9 TM |
1841 | return 0; |
1842 | } | |
1843 | ||
1da177e4 LT |
1844 | /* |
1845 | * OPEN_RECLAIM: | |
1846 | * reclaim state on the server after a reboot. | |
1da177e4 | 1847 | */ |
539cd03a | 1848 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1849 | { |
1ac7e2fd | 1850 | struct nfs_delegation *delegation; |
864472e9 | 1851 | struct nfs4_opendata *opendata; |
dc0b027d | 1852 | fmode_t delegation_type = 0; |
1da177e4 LT |
1853 | int status; |
1854 | ||
4a1c0893 TM |
1855 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
1856 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
1857 | if (IS_ERR(opendata)) |
1858 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
1859 | rcu_read_lock(); |
1860 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1861 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1862 | delegation_type = delegation->type; |
1ac7e2fd | 1863 | rcu_read_unlock(); |
864472e9 TM |
1864 | opendata->o_arg.u.delegation_type = delegation_type; |
1865 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1866 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1867 | return status; |
1868 | } | |
1869 | ||
539cd03a | 1870 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1871 | { |
1872 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1873 | struct nfs4_exception exception = { }; | |
1874 | int err; | |
1875 | do { | |
539cd03a | 1876 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 1877 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
1878 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
1879 | continue; | |
168667c4 | 1880 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1881 | break; |
1882 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1883 | } while (exception.retry); |
1884 | return err; | |
1885 | } | |
1886 | ||
864472e9 TM |
1887 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1888 | { | |
1889 | struct nfs_open_context *ctx; | |
1890 | int ret; | |
1891 | ||
1892 | ctx = nfs4_state_find_open_context(state); | |
1893 | if (IS_ERR(ctx)) | |
91876b13 | 1894 | return -EAGAIN; |
539cd03a | 1895 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1896 | put_nfs_open_context(ctx); |
1897 | return ret; | |
1898 | } | |
1899 | ||
db4f2e63 | 1900 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err) |
1da177e4 | 1901 | { |
be76b5b6 TM |
1902 | switch (err) { |
1903 | default: | |
1904 | printk(KERN_ERR "NFS: %s: unhandled error " | |
1905 | "%d.\n", __func__, err); | |
1906 | case 0: | |
1907 | case -ENOENT: | |
8eee52af | 1908 | case -EAGAIN: |
be76b5b6 TM |
1909 | case -ESTALE: |
1910 | break; | |
1911 | case -NFS4ERR_BADSESSION: | |
1912 | case -NFS4ERR_BADSLOT: | |
1913 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1914 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1915 | case -NFS4ERR_DEADSESSION: | |
1916 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1917 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); | |
1918 | return -EAGAIN; | |
1919 | case -NFS4ERR_STALE_CLIENTID: | |
1920 | case -NFS4ERR_STALE_STATEID: | |
1921 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
be76b5b6 TM |
1922 | /* Don't recall a delegation if it was lost */ |
1923 | nfs4_schedule_lease_recovery(server->nfs_client); | |
1924 | return -EAGAIN; | |
352297b9 CL |
1925 | case -NFS4ERR_MOVED: |
1926 | nfs4_schedule_migration_recovery(server); | |
1927 | return -EAGAIN; | |
8ef2f8d4 CL |
1928 | case -NFS4ERR_LEASE_MOVED: |
1929 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
1930 | return -EAGAIN; | |
be76b5b6 TM |
1931 | case -NFS4ERR_DELEG_REVOKED: |
1932 | case -NFS4ERR_ADMIN_REVOKED: | |
404ea356 | 1933 | case -NFS4ERR_EXPIRED: |
be76b5b6 | 1934 | case -NFS4ERR_BAD_STATEID: |
db4f2e63 | 1935 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
1936 | nfs_inode_find_state_and_recover(state->inode, |
1937 | stateid); | |
1938 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 1939 | return -EAGAIN; |
be76b5b6 TM |
1940 | case -NFS4ERR_DELAY: |
1941 | case -NFS4ERR_GRACE: | |
1942 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
1943 | ssleep(1); | |
1944 | return -EAGAIN; | |
db4f2e63 TM |
1945 | case -ENOMEM: |
1946 | case -NFS4ERR_DENIED: | |
1947 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
1948 | return 0; | |
be76b5b6 | 1949 | } |
1da177e4 LT |
1950 | return err; |
1951 | } | |
1952 | ||
24311f88 TM |
1953 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
1954 | struct nfs4_state *state, const nfs4_stateid *stateid, | |
1955 | fmode_t type) | |
db4f2e63 TM |
1956 | { |
1957 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1958 | struct nfs4_opendata *opendata; | |
24311f88 | 1959 | int err = 0; |
db4f2e63 TM |
1960 | |
1961 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
1962 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
1963 | if (IS_ERR(opendata)) | |
1964 | return PTR_ERR(opendata); | |
1965 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5e99b532 JL |
1966 | write_seqlock(&state->seqlock); |
1967 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1968 | write_sequnlock(&state->seqlock); | |
24311f88 TM |
1969 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1970 | switch (type & (FMODE_READ|FMODE_WRITE)) { | |
1971 | case FMODE_READ|FMODE_WRITE: | |
1972 | case FMODE_WRITE: | |
1973 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); | |
1974 | if (err) | |
1975 | break; | |
1976 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
1977 | if (err) | |
1978 | break; | |
1979 | case FMODE_READ: | |
1980 | err = nfs4_open_recover_helper(opendata, FMODE_READ); | |
1981 | } | |
db4f2e63 TM |
1982 | nfs4_opendata_put(opendata); |
1983 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); | |
1984 | } | |
1985 | ||
be05c860 CL |
1986 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1987 | { | |
1988 | struct nfs4_opendata *data = calldata; | |
1989 | ||
cb04ad2a PT |
1990 | nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, |
1991 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
1992 | } |
1993 | ||
cdd4e68b TM |
1994 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1995 | { | |
1996 | struct nfs4_opendata *data = calldata; | |
1997 | ||
17ead6c8 | 1998 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 1999 | |
cdd4e68b | 2000 | data->rpc_status = task->tk_status; |
26e976a8 | 2001 | if (data->rpc_status == 0) { |
f597c537 | 2002 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 2003 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 2004 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 2005 | data->rpc_done = 1; |
26e976a8 | 2006 | } |
cdd4e68b TM |
2007 | } |
2008 | ||
2009 | static void nfs4_open_confirm_release(void *calldata) | |
2010 | { | |
2011 | struct nfs4_opendata *data = calldata; | |
2012 | struct nfs4_state *state = NULL; | |
2013 | ||
2014 | /* If this request hasn't been cancelled, do nothing */ | |
2015 | if (data->cancelled == 0) | |
2016 | goto out_free; | |
2017 | /* In case of error, no cleanup! */ | |
3e309914 | 2018 | if (!data->rpc_done) |
cdd4e68b | 2019 | goto out_free; |
cdd4e68b | 2020 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2021 | if (!IS_ERR(state)) |
643168c2 | 2022 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 2023 | out_free: |
c6d00e63 | 2024 | nfs4_opendata_put(data); |
cdd4e68b TM |
2025 | } |
2026 | ||
2027 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 2028 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
2029 | .rpc_call_done = nfs4_open_confirm_done, |
2030 | .rpc_release = nfs4_open_confirm_release, | |
2031 | }; | |
2032 | ||
2033 | /* | |
2034 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
2035 | */ | |
2036 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
2037 | { | |
2b0143b5 | 2038 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 2039 | struct rpc_task *task; |
5138fde0 TM |
2040 | struct rpc_message msg = { |
2041 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
2042 | .rpc_argp = &data->c_arg, | |
2043 | .rpc_resp = &data->c_res, | |
2044 | .rpc_cred = data->owner->so_cred, | |
2045 | }; | |
c970aa85 TM |
2046 | struct rpc_task_setup task_setup_data = { |
2047 | .rpc_client = server->client, | |
5138fde0 | 2048 | .rpc_message = &msg, |
c970aa85 TM |
2049 | .callback_ops = &nfs4_open_confirm_ops, |
2050 | .callback_data = data, | |
101070ca | 2051 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2052 | .flags = RPC_TASK_ASYNC, |
2053 | }; | |
1da177e4 LT |
2054 | int status; |
2055 | ||
17ead6c8 | 2056 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); |
c6d00e63 | 2057 | kref_get(&data->kref); |
3e309914 TM |
2058 | data->rpc_done = 0; |
2059 | data->rpc_status = 0; | |
5138fde0 | 2060 | data->timestamp = jiffies; |
e92c1e0d BC |
2061 | if (data->is_recover) |
2062 | nfs4_set_sequence_privileged(&data->c_arg.seq_args); | |
c970aa85 | 2063 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 2064 | if (IS_ERR(task)) |
cdd4e68b | 2065 | return PTR_ERR(task); |
cdd4e68b TM |
2066 | status = nfs4_wait_for_completion_rpc_task(task); |
2067 | if (status != 0) { | |
2068 | data->cancelled = 1; | |
2069 | smp_wmb(); | |
2070 | } else | |
2071 | status = data->rpc_status; | |
e6b3c4db | 2072 | rpc_put_task(task); |
1da177e4 LT |
2073 | return status; |
2074 | } | |
2075 | ||
24ac23ab | 2076 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 2077 | { |
24ac23ab TM |
2078 | struct nfs4_opendata *data = calldata; |
2079 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 2080 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 2081 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 2082 | |
24ac23ab | 2083 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 2084 | goto out_wait; |
aac00a8d TM |
2085 | /* |
2086 | * Check if we still need to send an OPEN call, or if we can use | |
2087 | * a delegation instead. | |
2088 | */ | |
2089 | if (data->state != NULL) { | |
2090 | struct nfs_delegation *delegation; | |
2091 | ||
dc0b027d | 2092 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 2093 | goto out_no_action; |
aac00a8d TM |
2094 | rcu_read_lock(); |
2095 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
2a606188 | 2096 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 2097 | goto unlock_no_action; |
aac00a8d TM |
2098 | rcu_read_unlock(); |
2099 | } | |
95b72eb0 | 2100 | /* Update client id. */ |
549b19cc | 2101 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
2102 | switch (claim) { |
2103 | default: | |
2104 | break; | |
8188df17 TM |
2105 | case NFS4_OPEN_CLAIM_PREVIOUS: |
2106 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
2107 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 2108 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
8188df17 TM |
2109 | case NFS4_OPEN_CLAIM_FH: |
2110 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 TM |
2111 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
2112 | } | |
26e976a8 | 2113 | data->timestamp = jiffies; |
035168ab | 2114 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 2115 | &data->o_arg.seq_args, |
2240a9e2 TM |
2116 | &data->o_res.seq_res, |
2117 | task) != 0) | |
2118 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2119 | |
2120 | /* Set the create mode (note dependency on the session type) */ | |
2121 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2122 | if (data->o_arg.open_flags & O_EXCL) { | |
2123 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2124 | if (nfs4_has_persistent_session(clp)) | |
2125 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2126 | else if (clp->cl_mvops->minor_version > 0) | |
2127 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2128 | } | |
6ee41268 | 2129 | return; |
652f89f6 | 2130 | unlock_no_action: |
9759b0fb | 2131 | trace_nfs4_cached_open(data->state); |
652f89f6 | 2132 | rcu_read_unlock(); |
6ee41268 TM |
2133 | out_no_action: |
2134 | task->tk_action = NULL; | |
c8da19b9 | 2135 | out_wait: |
b75ad4cd | 2136 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2137 | } |
2138 | ||
24ac23ab TM |
2139 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2140 | { | |
2141 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2142 | |
24ac23ab | 2143 | data->rpc_status = task->tk_status; |
d898528c | 2144 | |
2e80dbe7 | 2145 | if (!nfs4_sequence_process(task, &data->o_res.seq_res)) |
14516c3a | 2146 | return; |
d898528c | 2147 | |
24ac23ab | 2148 | if (task->tk_status == 0) { |
807d66d8 TM |
2149 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2150 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2151 | case S_IFREG: |
2152 | break; | |
2153 | case S_IFLNK: | |
24ac23ab | 2154 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2155 | break; |
2156 | case S_IFDIR: | |
24ac23ab | 2157 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2158 | break; |
2159 | default: | |
24ac23ab | 2160 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2161 | } |
6f926b5b | 2162 | } |
26e976a8 | 2163 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2164 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2165 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2166 | } |
3e309914 | 2167 | data->rpc_done = 1; |
24ac23ab | 2168 | } |
6f926b5b | 2169 | |
24ac23ab TM |
2170 | static void nfs4_open_release(void *calldata) |
2171 | { | |
2172 | struct nfs4_opendata *data = calldata; | |
2173 | struct nfs4_state *state = NULL; | |
2174 | ||
2175 | /* If this request hasn't been cancelled, do nothing */ | |
2176 | if (data->cancelled == 0) | |
2177 | goto out_free; | |
2178 | /* In case of error, no cleanup! */ | |
3e309914 | 2179 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2180 | goto out_free; |
2181 | /* In case we need an open_confirm, no cleanup! */ | |
2182 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2183 | goto out_free; | |
24ac23ab | 2184 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2185 | if (!IS_ERR(state)) |
643168c2 | 2186 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2187 | out_free: |
c6d00e63 | 2188 | nfs4_opendata_put(data); |
24ac23ab TM |
2189 | } |
2190 | ||
2191 | static const struct rpc_call_ops nfs4_open_ops = { | |
2192 | .rpc_call_prepare = nfs4_open_prepare, | |
2193 | .rpc_call_done = nfs4_open_done, | |
2194 | .rpc_release = nfs4_open_release, | |
2195 | }; | |
2196 | ||
b257957e | 2197 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) |
24ac23ab | 2198 | { |
2b0143b5 | 2199 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2200 | struct nfs_server *server = NFS_SERVER(dir); |
2201 | struct nfs_openargs *o_arg = &data->o_arg; | |
2202 | struct nfs_openres *o_res = &data->o_res; | |
2203 | struct rpc_task *task; | |
5138fde0 TM |
2204 | struct rpc_message msg = { |
2205 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2206 | .rpc_argp = o_arg, | |
2207 | .rpc_resp = o_res, | |
2208 | .rpc_cred = data->owner->so_cred, | |
2209 | }; | |
c970aa85 TM |
2210 | struct rpc_task_setup task_setup_data = { |
2211 | .rpc_client = server->client, | |
5138fde0 | 2212 | .rpc_message = &msg, |
c970aa85 TM |
2213 | .callback_ops = &nfs4_open_ops, |
2214 | .callback_data = data, | |
101070ca | 2215 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2216 | .flags = RPC_TASK_ASYNC, |
2217 | }; | |
24ac23ab TM |
2218 | int status; |
2219 | ||
a9c92d6b | 2220 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 2221 | kref_get(&data->kref); |
3e309914 TM |
2222 | data->rpc_done = 0; |
2223 | data->rpc_status = 0; | |
2ced46c2 | 2224 | data->cancelled = 0; |
bdeca1b7 TM |
2225 | data->is_recover = 0; |
2226 | if (isrecover) { | |
8fe72bac | 2227 | nfs4_set_sequence_privileged(&o_arg->seq_args); |
bdeca1b7 TM |
2228 | data->is_recover = 1; |
2229 | } | |
c970aa85 | 2230 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
2231 | if (IS_ERR(task)) |
2232 | return PTR_ERR(task); | |
2233 | status = nfs4_wait_for_completion_rpc_task(task); | |
2234 | if (status != 0) { | |
2235 | data->cancelled = 1; | |
2236 | smp_wmb(); | |
2237 | } else | |
2238 | status = data->rpc_status; | |
2239 | rpc_put_task(task); | |
2240 | ||
2241 | return status; | |
2242 | } | |
2243 | ||
2244 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2245 | { | |
2b0143b5 | 2246 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2247 | struct nfs_openres *o_res = &data->o_res; |
2248 | int status; | |
2249 | ||
2250 | status = nfs4_run_open_task(data, 1); | |
2251 | if (status != 0 || !data->rpc_done) | |
2252 | return status; | |
2253 | ||
6926afd1 TM |
2254 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2255 | ||
b257957e AB |
2256 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
2257 | status = _nfs4_proc_open_confirm(data); | |
2258 | if (status != 0) | |
2259 | return status; | |
2260 | } | |
2261 | ||
2262 | return status; | |
2263 | } | |
2264 | ||
f3792d63 TM |
2265 | /* |
2266 | * Additional permission checks in order to distinguish between an | |
2267 | * open for read, and an open for execute. This works around the | |
2268 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2269 | * the same. | |
2270 | * Note that in the non-execute case, we want to turn off permission | |
2271 | * checking if we just created a new file (POSIX open() semantics). | |
2272 | */ | |
6168f62c WAA |
2273 | static int nfs4_opendata_access(struct rpc_cred *cred, |
2274 | struct nfs4_opendata *opendata, | |
f8d9a897 WAA |
2275 | struct nfs4_state *state, fmode_t fmode, |
2276 | int openflags) | |
6168f62c WAA |
2277 | { |
2278 | struct nfs_access_entry cache; | |
2279 | u32 mask; | |
2280 | ||
2281 | /* access call failed or for some reason the server doesn't | |
2282 | * support any access modes -- defer access call until later */ | |
2283 | if (opendata->o_res.access_supported == 0) | |
2284 | return 0; | |
2285 | ||
2286 | mask = 0; | |
f3792d63 TM |
2287 | /* |
2288 | * Use openflags to check for exec, because fmode won't | |
2289 | * always have FMODE_EXEC set when file open for exec. | |
2290 | */ | |
f8d9a897 WAA |
2291 | if (openflags & __FMODE_EXEC) { |
2292 | /* ONLY check for exec rights */ | |
2293 | mask = MAY_EXEC; | |
f3792d63 | 2294 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
f8d9a897 | 2295 | mask = MAY_READ; |
6168f62c WAA |
2296 | |
2297 | cache.cred = cred; | |
2298 | cache.jiffies = jiffies; | |
2299 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
2300 | nfs_access_add_cache(state->inode, &cache); | |
2301 | ||
bbd3a8ee | 2302 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
2303 | return 0; |
2304 | ||
2305 | /* even though OPEN succeeded, access is denied. Close the file */ | |
2306 | nfs4_close_state(state, fmode); | |
998f40b5 | 2307 | return -EACCES; |
6168f62c WAA |
2308 | } |
2309 | ||
b257957e AB |
2310 | /* |
2311 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2312 | */ | |
2313 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
2314 | { | |
2b0143b5 | 2315 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2316 | struct nfs_server *server = NFS_SERVER(dir); |
2317 | struct nfs_openargs *o_arg = &data->o_arg; | |
2318 | struct nfs_openres *o_res = &data->o_res; | |
2319 | int status; | |
2320 | ||
2321 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
2322 | if (!data->rpc_done) |
2323 | return status; | |
2324 | if (status != 0) { | |
2325 | if (status == -NFS4ERR_BADNAME && | |
2326 | !(o_arg->open_flags & O_CREAT)) | |
2327 | return -ENOENT; | |
24ac23ab | 2328 | return status; |
08ef7bd3 | 2329 | } |
24ac23ab | 2330 | |
6926afd1 TM |
2331 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2332 | ||
5bc2afc2 | 2333 | if (o_arg->open_flags & O_CREAT) { |
56ae19f3 | 2334 | update_changeattr(dir, &o_res->cinfo); |
5bc2afc2 TM |
2335 | if (o_arg->open_flags & O_EXCL) |
2336 | data->file_created = 1; | |
2337 | else if (o_res->cinfo.before != o_res->cinfo.after) | |
2338 | data->file_created = 1; | |
2339 | } | |
0df5dd4a TM |
2340 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2341 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2342 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2343 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2344 | if (status != 0) |
24ac23ab | 2345 | return status; |
1da177e4 LT |
2346 | } |
2347 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
8935ef66 | 2348 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label); |
24ac23ab | 2349 | return 0; |
1da177e4 LT |
2350 | } |
2351 | ||
d83217c1 AA |
2352 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
2353 | { | |
2354 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
2355 | } | |
2356 | ||
1da177e4 LT |
2357 | /* |
2358 | * OPEN_EXPIRED: | |
2359 | * reclaim state on the server after a network partition. | |
2360 | * Assumes caller holds the appropriate lock | |
2361 | */ | |
539cd03a | 2362 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2363 | { |
e56e0b78 | 2364 | struct nfs4_opendata *opendata; |
864472e9 | 2365 | int ret; |
1da177e4 | 2366 | |
4a1c0893 | 2367 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2368 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2369 | if (IS_ERR(opendata)) |
2370 | return PTR_ERR(opendata); | |
864472e9 | 2371 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2372 | if (ret == -ESTALE) |
3d4ff43d | 2373 | d_drop(ctx->dentry); |
c6d00e63 | 2374 | nfs4_opendata_put(opendata); |
864472e9 | 2375 | return ret; |
1da177e4 LT |
2376 | } |
2377 | ||
a9ed2e25 | 2378 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2379 | { |
539cd03a | 2380 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2381 | struct nfs4_exception exception = { }; |
2382 | int err; | |
2383 | ||
2384 | do { | |
539cd03a | 2385 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2386 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2387 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2388 | continue; | |
a9ed2e25 TM |
2389 | switch (err) { |
2390 | default: | |
2391 | goto out; | |
2392 | case -NFS4ERR_GRACE: | |
2393 | case -NFS4ERR_DELAY: | |
2394 | nfs4_handle_exception(server, err, &exception); | |
2395 | err = 0; | |
2396 | } | |
202b50dc | 2397 | } while (exception.retry); |
a9ed2e25 | 2398 | out: |
202b50dc TM |
2399 | return err; |
2400 | } | |
2401 | ||
1da177e4 LT |
2402 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2403 | { | |
1da177e4 | 2404 | struct nfs_open_context *ctx; |
864472e9 | 2405 | int ret; |
1da177e4 | 2406 | |
864472e9 TM |
2407 | ctx = nfs4_state_find_open_context(state); |
2408 | if (IS_ERR(ctx)) | |
91876b13 | 2409 | return -EAGAIN; |
539cd03a | 2410 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2411 | put_nfs_open_context(ctx); |
2412 | return ret; | |
1da177e4 LT |
2413 | } |
2414 | ||
41020b67 TM |
2415 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state, |
2416 | const nfs4_stateid *stateid) | |
4dfd4f7a | 2417 | { |
41020b67 | 2418 | nfs_remove_bad_delegation(state->inode, stateid); |
4dfd4f7a TM |
2419 | write_seqlock(&state->seqlock); |
2420 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2421 | write_sequnlock(&state->seqlock); | |
2422 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
2423 | } | |
2424 | ||
2425 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2426 | { | |
2427 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
41020b67 | 2428 | nfs_finish_clear_delegation_stateid(state, NULL); |
4dfd4f7a TM |
2429 | } |
2430 | ||
2431 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2432 | { | |
2433 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2434 | nfs40_clear_delegation_stateid(state); | |
2435 | return nfs4_open_expired(sp, state); | |
2436 | } | |
2437 | ||
45870d69 TM |
2438 | static int nfs40_test_and_free_expired_stateid(struct nfs_server *server, |
2439 | nfs4_stateid *stateid, | |
2440 | struct rpc_cred *cred) | |
2441 | { | |
2442 | return -NFS4ERR_BAD_STATEID; | |
2443 | } | |
2444 | ||
f062eb6c | 2445 | #if defined(CONFIG_NFS_V4_1) |
4586f6e2 TM |
2446 | static int nfs41_test_and_free_expired_stateid(struct nfs_server *server, |
2447 | nfs4_stateid *stateid, | |
2448 | struct rpc_cred *cred) | |
2449 | { | |
2450 | int status; | |
2451 | ||
f7a62ada TM |
2452 | switch (stateid->type) { |
2453 | default: | |
2454 | break; | |
2455 | case NFS4_INVALID_STATEID_TYPE: | |
2456 | case NFS4_SPECIAL_STATEID_TYPE: | |
2457 | return -NFS4ERR_BAD_STATEID; | |
2458 | case NFS4_REVOKED_STATEID_TYPE: | |
2459 | goto out_free; | |
2460 | } | |
4586f6e2 | 2461 | |
f7a62ada | 2462 | status = nfs41_test_stateid(server, stateid, cred); |
4586f6e2 TM |
2463 | switch (status) { |
2464 | case -NFS4ERR_EXPIRED: | |
2465 | case -NFS4ERR_ADMIN_REVOKED: | |
2466 | case -NFS4ERR_DELEG_REVOKED: | |
f7a62ada TM |
2467 | break; |
2468 | default: | |
4586f6e2 TM |
2469 | return status; |
2470 | } | |
f7a62ada TM |
2471 | out_free: |
2472 | /* Ack the revoked state to the server */ | |
f0b0bf88 | 2473 | nfs41_free_stateid(server, stateid, cred, true); |
f7a62ada | 2474 | return -NFS4ERR_EXPIRED; |
4586f6e2 TM |
2475 | } |
2476 | ||
0c116cad | 2477 | static void nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2478 | { |
f062eb6c | 2479 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2480 | nfs4_stateid stateid; |
ab7cb0df | 2481 | struct nfs_delegation *delegation; |
0c116cad TM |
2482 | struct rpc_cred *cred; |
2483 | int status; | |
3e60ffdd | 2484 | |
ab7cb0df TM |
2485 | /* Get the delegation credential for use by test/free_stateid */ |
2486 | rcu_read_lock(); | |
2487 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2488 | if (delegation == NULL) { |
ab7cb0df | 2489 | rcu_read_unlock(); |
0c116cad TM |
2490 | return; |
2491 | } | |
41020b67 TM |
2492 | |
2493 | nfs4_stateid_copy(&stateid, &delegation->stateid); | |
4c8e5447 TM |
2494 | if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { |
2495 | rcu_read_unlock(); | |
41020b67 | 2496 | nfs_finish_clear_delegation_stateid(state, &stateid); |
4c8e5447 TM |
2497 | return; |
2498 | } | |
0c116cad | 2499 | |
63d63cbf TM |
2500 | if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags)) { |
2501 | rcu_read_unlock(); | |
2502 | return; | |
2503 | } | |
2504 | ||
0c116cad TM |
2505 | cred = get_rpccred(delegation->cred); |
2506 | rcu_read_unlock(); | |
4586f6e2 | 2507 | status = nfs41_test_and_free_expired_stateid(server, &stateid, cred); |
0c116cad | 2508 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
f7a62ada | 2509 | if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) |
41020b67 | 2510 | nfs_finish_clear_delegation_stateid(state, &stateid); |
ab7cb0df | 2511 | |
0c116cad | 2512 | put_rpccred(cred); |
3e60ffdd CL |
2513 | } |
2514 | ||
c5896fc8 TM |
2515 | /** |
2516 | * nfs41_check_expired_locks - possibly free a lock stateid | |
2517 | * | |
2518 | * @state: NFSv4 state for an inode | |
2519 | * | |
2520 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2521 | * Otherwise a negative NFS4ERR value is returned. | |
2522 | */ | |
2523 | static int nfs41_check_expired_locks(struct nfs4_state *state) | |
2524 | { | |
2525 | int status, ret = NFS_OK; | |
2526 | struct nfs4_lock_state *lsp; | |
2527 | struct nfs_server *server = NFS_SERVER(state->inode); | |
2528 | ||
2529 | if (!test_bit(LK_STATE_IN_USE, &state->flags)) | |
2530 | goto out; | |
2531 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { | |
2532 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { | |
2533 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; | |
2534 | ||
2535 | status = nfs41_test_and_free_expired_stateid(server, | |
2536 | &lsp->ls_stateid, | |
2537 | cred); | |
2538 | trace_nfs4_test_lock_stateid(state, lsp, status); | |
2539 | if (status == -NFS4ERR_EXPIRED || | |
2540 | status == -NFS4ERR_BAD_STATEID) { | |
2541 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
2542 | if (!recover_lost_locks) | |
2543 | set_bit(NFS_LOCK_LOST, &lsp->ls_flags); | |
2544 | } else if (status != NFS_OK) { | |
2545 | ret = status; | |
2546 | break; | |
2547 | } | |
2548 | } | |
2549 | }; | |
2550 | out: | |
2551 | return ret; | |
2552 | } | |
2553 | ||
3e60ffdd CL |
2554 | /** |
2555 | * nfs41_check_open_stateid - possibly free an open stateid | |
2556 | * | |
2557 | * @state: NFSv4 state for an inode | |
2558 | * | |
2559 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2560 | * Otherwise a negative NFS4ERR value is returned. | |
2561 | */ | |
2562 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2563 | { | |
2564 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2565 | nfs4_stateid *stateid = &state->open_stateid; |
ab7cb0df | 2566 | struct rpc_cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2567 | int status; |
2568 | ||
2569 | /* If a state reset has been done, test_stateid is unneeded */ | |
2570 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2571 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2572 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2573 | return -NFS4ERR_BAD_STATEID; | |
2574 | ||
4586f6e2 | 2575 | status = nfs41_test_and_free_expired_stateid(server, stateid, cred); |
08cb47fa | 2576 | trace_nfs4_test_open_stateid(state, NULL, status); |
f7a62ada | 2577 | if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) { |
3e60ffdd CL |
2578 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2579 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2580 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
fd068b20 | 2581 | clear_bit(NFS_OPEN_STATE, &state->flags); |
b01dd1d8 BS |
2582 | } |
2583 | return status; | |
2584 | } | |
2585 | ||
2586 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2587 | { | |
eb64cf96 | 2588 | int status; |
b01dd1d8 | 2589 | |
0c116cad | 2590 | nfs41_check_delegation_stateid(state); |
c5896fc8 TM |
2591 | status = nfs41_check_expired_locks(state); |
2592 | if (status != NFS_OK) | |
2593 | return status; | |
3e60ffdd | 2594 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2595 | if (status != NFS_OK) |
2596 | status = nfs4_open_expired(sp, state); | |
2597 | return status; | |
f062eb6c BS |
2598 | } |
2599 | #endif | |
2600 | ||
aa53ed54 JL |
2601 | /* |
2602 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2603 | * fields corresponding to attributes that were used to store the verifier. | |
2604 | * Make sure we clobber those fields in the later setattr call | |
2605 | */ | |
5334c5bd KM |
2606 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
2607 | struct iattr *sattr, struct nfs4_label **label) | |
aa53ed54 | 2608 | { |
5334c5bd KM |
2609 | const u32 *attrset = opendata->o_res.attrset; |
2610 | ||
2611 | if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
aa53ed54 JL |
2612 | !(sattr->ia_valid & ATTR_ATIME_SET)) |
2613 | sattr->ia_valid |= ATTR_ATIME; | |
2614 | ||
5334c5bd | 2615 | if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && |
aa53ed54 JL |
2616 | !(sattr->ia_valid & ATTR_MTIME_SET)) |
2617 | sattr->ia_valid |= ATTR_MTIME; | |
5334c5bd KM |
2618 | |
2619 | /* Except MODE, it seems harmless of setting twice. */ | |
2620 | if ((attrset[1] & FATTR4_WORD1_MODE)) | |
2621 | sattr->ia_valid &= ~ATTR_MODE; | |
2622 | ||
2623 | if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) | |
2624 | *label = NULL; | |
aa53ed54 JL |
2625 | } |
2626 | ||
c21443c2 TM |
2627 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
2628 | fmode_t fmode, | |
2629 | int flags, | |
3efb9722 | 2630 | struct nfs_open_context *ctx) |
c21443c2 TM |
2631 | { |
2632 | struct nfs4_state_owner *sp = opendata->owner; | |
2633 | struct nfs_server *server = sp->so_server; | |
275bb307 | 2634 | struct dentry *dentry; |
c21443c2 TM |
2635 | struct nfs4_state *state; |
2636 | unsigned int seq; | |
2637 | int ret; | |
2638 | ||
2639 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
2640 | ||
2641 | ret = _nfs4_proc_open(opendata); | |
dca78001 | 2642 | if (ret != 0) |
c21443c2 TM |
2643 | goto out; |
2644 | ||
2645 | state = nfs4_opendata_to_nfs4_state(opendata); | |
2646 | ret = PTR_ERR(state); | |
2647 | if (IS_ERR(state)) | |
2648 | goto out; | |
2649 | if (server->caps & NFS_CAP_POSIX_LOCK) | |
2650 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
a8ce377a JL |
2651 | if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK) |
2652 | set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags); | |
c21443c2 | 2653 | |
275bb307 | 2654 | dentry = opendata->dentry; |
2b0143b5 | 2655 | if (d_really_is_negative(dentry)) { |
668d0cd5 | 2656 | struct dentry *alias; |
275bb307 | 2657 | d_drop(dentry); |
668d0cd5 AV |
2658 | alias = d_exact_alias(dentry, state->inode); |
2659 | if (!alias) | |
2660 | alias = d_splice_alias(igrab(state->inode), dentry); | |
2661 | /* d_splice_alias() can't fail here - it's a non-directory */ | |
2662 | if (alias) { | |
275bb307 | 2663 | dput(ctx->dentry); |
668d0cd5 | 2664 | ctx->dentry = dentry = alias; |
275bb307 TM |
2665 | } |
2666 | nfs_set_verifier(dentry, | |
2b0143b5 | 2667 | nfs_save_change_attribute(d_inode(opendata->dir))); |
275bb307 TM |
2668 | } |
2669 | ||
c21443c2 TM |
2670 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); |
2671 | if (ret != 0) | |
2672 | goto out; | |
2673 | ||
3efb9722 | 2674 | ctx->state = state; |
2b0143b5 | 2675 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
2676 | nfs_inode_attach_open_context(ctx); |
2677 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
2678 | nfs4_schedule_stateid_recovery(server, state); | |
2679 | } | |
c21443c2 TM |
2680 | out: |
2681 | return ret; | |
2682 | } | |
2683 | ||
1da177e4 | 2684 | /* |
24ac23ab | 2685 | * Returns a referenced nfs4_state |
1da177e4 | 2686 | */ |
82be417a | 2687 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 2688 | struct nfs_open_context *ctx, |
82be417a AA |
2689 | int flags, |
2690 | struct iattr *sattr, | |
5bc2afc2 TM |
2691 | struct nfs4_label *label, |
2692 | int *opened) | |
1da177e4 LT |
2693 | { |
2694 | struct nfs4_state_owner *sp; | |
2695 | struct nfs4_state *state = NULL; | |
2696 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2697 | struct nfs4_opendata *opendata; |
4197a055 TM |
2698 | struct dentry *dentry = ctx->dentry; |
2699 | struct rpc_cred *cred = ctx->cred; | |
2700 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; | |
2701 | fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
49f9a0fa | 2702 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
1775fd3e | 2703 | struct nfs4_label *olabel = NULL; |
aac00a8d | 2704 | int status; |
1da177e4 LT |
2705 | |
2706 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2707 | status = -ENOMEM; |
d1e284d5 TM |
2708 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2709 | if (sp == NULL) { | |
1da177e4 LT |
2710 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2711 | goto out_err; | |
2712 | } | |
58d9714a TM |
2713 | status = nfs4_recover_expired_lease(server); |
2714 | if (status != 0) | |
b4454fe1 | 2715 | goto err_put_state_owner; |
2b0143b5 DH |
2716 | if (d_really_is_positive(dentry)) |
2717 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 2718 | status = -ENOMEM; |
2b0143b5 | 2719 | if (d_really_is_positive(dentry)) |
49f9a0fa | 2720 | claim = NFS4_OPEN_CLAIM_FH; |
4a1c0893 | 2721 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, |
1775fd3e | 2722 | label, claim, GFP_KERNEL); |
e56e0b78 | 2723 | if (opendata == NULL) |
95d35cb4 | 2724 | goto err_put_state_owner; |
1da177e4 | 2725 | |
14c43f76 DQ |
2726 | if (label) { |
2727 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
2728 | if (IS_ERR(olabel)) { | |
2729 | status = PTR_ERR(olabel); | |
2730 | goto err_opendata_put; | |
2731 | } | |
2732 | } | |
2733 | ||
e911b815 TM |
2734 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2735 | if (!opendata->f_attr.mdsthreshold) { | |
2736 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2737 | if (!opendata->f_attr.mdsthreshold) | |
2738 | goto err_free_label; | |
2739 | } | |
1549210f | 2740 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2741 | } |
2b0143b5 DH |
2742 | if (d_really_is_positive(dentry)) |
2743 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 2744 | |
3efb9722 | 2745 | status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); |
6168f62c | 2746 | if (status != 0) |
14c43f76 | 2747 | goto err_free_label; |
3efb9722 | 2748 | state = ctx->state; |
6168f62c | 2749 | |
efcbc04e | 2750 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 2751 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
5334c5bd | 2752 | nfs4_exclusive_attrset(opendata, sattr, &label); |
a1d1c4f1 TM |
2753 | /* |
2754 | * send create attributes which was not set by open | |
2755 | * with an extra setattr. | |
2756 | */ | |
2757 | if (sattr->ia_valid & NFS4_VALID_ATTRS) { | |
2758 | nfs_fattr_init(opendata->o_res.f_attr); | |
2759 | status = nfs4_do_setattr(state->inode, cred, | |
2760 | opendata->o_res.f_attr, sattr, | |
2761 | state, label, olabel); | |
2762 | if (status == 0) { | |
2763 | nfs_setattr_update_inode(state->inode, sattr, | |
2764 | opendata->o_res.f_attr); | |
2765 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); | |
2766 | } | |
1775fd3e | 2767 | } |
0ab64e0e | 2768 | } |
c5c3fb5f | 2769 | if (opened && opendata->file_created) |
5bc2afc2 | 2770 | *opened |= FILE_CREATED; |
82be417a | 2771 | |
e911b815 | 2772 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 2773 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
2774 | opendata->f_attr.mdsthreshold = NULL; |
2775 | } | |
82be417a | 2776 | |
14c43f76 DQ |
2777 | nfs4_label_free(olabel); |
2778 | ||
c6d00e63 | 2779 | nfs4_opendata_put(opendata); |
1da177e4 | 2780 | nfs4_put_state_owner(sp); |
1da177e4 | 2781 | return 0; |
14c43f76 DQ |
2782 | err_free_label: |
2783 | nfs4_label_free(olabel); | |
c6d00e63 TM |
2784 | err_opendata_put: |
2785 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
2786 | err_put_state_owner: |
2787 | nfs4_put_state_owner(sp); | |
1da177e4 | 2788 | out_err: |
1da177e4 LT |
2789 | return status; |
2790 | } | |
2791 | ||
2792 | ||
82be417a | 2793 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 2794 | struct nfs_open_context *ctx, |
82be417a AA |
2795 | int flags, |
2796 | struct iattr *sattr, | |
5bc2afc2 TM |
2797 | struct nfs4_label *label, |
2798 | int *opened) | |
1da177e4 | 2799 | { |
49f9a0fa | 2800 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
2801 | struct nfs4_exception exception = { }; |
2802 | struct nfs4_state *res; | |
2803 | int status; | |
2804 | ||
2805 | do { | |
5bc2afc2 | 2806 | status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); |
3efb9722 | 2807 | res = ctx->state; |
42113a75 | 2808 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
2809 | if (status == 0) |
2810 | break; | |
2811 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2812 | * book-keeping w.r.t. state-changing operations | |
2813 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2814 | * It is actually a sign of a bug on the client or on the server. | |
2815 | * | |
2816 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2817 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2818 | * have unhashed the old state_owner for us, and that we can |
2819 | * therefore safely retry using a new one. We should still warn | |
2820 | * the user though... | |
2821 | */ | |
2822 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2823 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2824 | " returned a bad sequence-id error!\n", |
2825 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2826 | exception.retry = 1; |
2827 | continue; | |
2828 | } | |
550f5747 TM |
2829 | /* |
2830 | * BAD_STATEID on OPEN means that the server cancelled our | |
2831 | * state before it received the OPEN_CONFIRM. | |
2832 | * Recover by retrying the request as per the discussion | |
2833 | * on Page 181 of RFC3530. | |
2834 | */ | |
2835 | if (status == -NFS4ERR_BAD_STATEID) { | |
2836 | exception.retry = 1; | |
2837 | continue; | |
2838 | } | |
aac00a8d TM |
2839 | if (status == -EAGAIN) { |
2840 | /* We must have found a delegation */ | |
2841 | exception.retry = 1; | |
2842 | continue; | |
2843 | } | |
49f9a0fa TM |
2844 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
2845 | continue; | |
2846 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
2847 | status, &exception)); |
2848 | } while (exception.retry); | |
2849 | return res; | |
2850 | } | |
2851 | ||
8487c479 TM |
2852 | static int _nfs4_do_setattr(struct inode *inode, |
2853 | struct nfs_setattrargs *arg, | |
2854 | struct nfs_setattrres *res, | |
2855 | struct rpc_cred *cred, | |
2856 | struct nfs4_state *state) | |
1da177e4 | 2857 | { |
3e4f6290 | 2858 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2859 | struct rpc_message msg = { |
659bfcd6 | 2860 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
8487c479 TM |
2861 | .rpc_argp = arg, |
2862 | .rpc_resp = res, | |
659bfcd6 | 2863 | .rpc_cred = cred, |
1da177e4 | 2864 | }; |
abf4e13c | 2865 | struct rpc_cred *delegation_cred = NULL; |
26e976a8 | 2866 | unsigned long timestamp = jiffies; |
ee3ae84e TM |
2867 | fmode_t fmode; |
2868 | bool truncate; | |
65e4308d | 2869 | int status; |
1da177e4 | 2870 | |
8487c479 | 2871 | nfs_fattr_init(res->fattr); |
1da177e4 | 2872 | |
ee3ae84e | 2873 | /* Servers should only apply open mode checks for file size changes */ |
8487c479 | 2874 | truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false; |
ee3ae84e TM |
2875 | fmode = truncate ? FMODE_WRITE : FMODE_READ; |
2876 | ||
8487c479 | 2877 | if (nfs4_copy_delegation_stateid(inode, fmode, &arg->stateid, &delegation_cred)) { |
ee3ae84e | 2878 | /* Use that stateid */ |
0418dae1 | 2879 | } else if (truncate && state != NULL) { |
2a369153 TM |
2880 | struct nfs_lockowner lockowner = { |
2881 | .l_owner = current->files, | |
2882 | .l_pid = current->tgid, | |
2883 | }; | |
0418dae1 TM |
2884 | if (!nfs4_valid_open_stateid(state)) |
2885 | return -EBADF; | |
abf4e13c | 2886 | if (nfs4_select_rw_stateid(state, FMODE_WRITE, &lockowner, |
8487c479 | 2887 | &arg->stateid, &delegation_cred) == -EIO) |
0418dae1 | 2888 | return -EBADF; |
08e9eac4 | 2889 | } else |
8487c479 | 2890 | nfs4_stateid_copy(&arg->stateid, &zero_stateid); |
abf4e13c TM |
2891 | if (delegation_cred) |
2892 | msg.rpc_cred = delegation_cred; | |
1da177e4 | 2893 | |
8487c479 | 2894 | status = nfs4_call_sync(server->client, server, &msg, &arg->seq_args, &res->seq_res, 1); |
abf4e13c TM |
2895 | |
2896 | put_rpccred(delegation_cred); | |
26e976a8 TM |
2897 | if (status == 0 && state != NULL) |
2898 | renew_lease(server, timestamp); | |
8487c479 | 2899 | trace_nfs4_setattr(inode, &arg->stateid, status); |
65e4308d | 2900 | return status; |
1da177e4 LT |
2901 | } |
2902 | ||
659bfcd6 TM |
2903 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2904 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1775fd3e DQ |
2905 | struct nfs4_state *state, struct nfs4_label *ilabel, |
2906 | struct nfs4_label *olabel) | |
1da177e4 | 2907 | { |
3e4f6290 | 2908 | struct nfs_server *server = NFS_SERVER(inode); |
8487c479 TM |
2909 | struct nfs_setattrargs arg = { |
2910 | .fh = NFS_FH(inode), | |
2911 | .iap = sattr, | |
2912 | .server = server, | |
2913 | .bitmask = server->attr_bitmask, | |
2914 | .label = ilabel, | |
2915 | }; | |
2916 | struct nfs_setattrres res = { | |
2917 | .fattr = fattr, | |
2918 | .label = olabel, | |
2919 | .server = server, | |
2920 | }; | |
a1d0b5ee TM |
2921 | struct nfs4_exception exception = { |
2922 | .state = state, | |
3114ea7a | 2923 | .inode = inode, |
8487c479 | 2924 | .stateid = &arg.stateid, |
a1d0b5ee | 2925 | }; |
1da177e4 | 2926 | int err; |
8487c479 TM |
2927 | |
2928 | arg.bitmask = nfs4_bitmask(server, ilabel); | |
2929 | if (ilabel) | |
2930 | arg.bitmask = nfs4_bitmask(server, olabel); | |
2931 | ||
1da177e4 | 2932 | do { |
8487c479 | 2933 | err = _nfs4_do_setattr(inode, &arg, &res, cred, state); |
451146be TM |
2934 | switch (err) { |
2935 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
2936 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
2937 | pr_warn_once("NFSv4: server %s is incorrectly " | |
2938 | "applying open mode checks to " | |
2939 | "a SETATTR that is not " | |
2940 | "changing file size.\n", | |
2941 | server->nfs_client->cl_hostname); | |
2942 | } | |
451146be TM |
2943 | if (state && !(state->state & FMODE_WRITE)) { |
2944 | err = -EBADF; | |
2945 | if (sattr->ia_valid & ATTR_OPEN) | |
2946 | err = -EACCES; | |
2947 | goto out; | |
2948 | } | |
2949 | } | |
2950 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2951 | } while (exception.retry); |
451146be | 2952 | out: |
1da177e4 LT |
2953 | return err; |
2954 | } | |
2955 | ||
500d701f PT |
2956 | static bool |
2957 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
2958 | { | |
2959 | if (inode == NULL || !nfs_have_layout(inode)) | |
2960 | return false; | |
2961 | ||
2962 | return pnfs_wait_on_layoutreturn(inode, task); | |
2963 | } | |
2964 | ||
1da177e4 LT |
2965 | struct nfs4_closedata { |
2966 | struct inode *inode; | |
2967 | struct nfs4_state *state; | |
2968 | struct nfs_closeargs arg; | |
2969 | struct nfs_closeres res; | |
516a6af6 | 2970 | struct nfs_fattr fattr; |
26e976a8 | 2971 | unsigned long timestamp; |
f7e8917a FI |
2972 | bool roc; |
2973 | u32 roc_barrier; | |
1da177e4 LT |
2974 | }; |
2975 | ||
963d8fe5 | 2976 | static void nfs4_free_closedata(void *data) |
9512135d | 2977 | { |
963d8fe5 TM |
2978 | struct nfs4_closedata *calldata = data; |
2979 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2980 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2981 | |
f7e8917a FI |
2982 | if (calldata->roc) |
2983 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2984 | nfs4_put_open_state(calldata->state); |
2985 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2986 | nfs4_put_state_owner(sp); |
322b2b90 | 2987 | nfs_sb_deactive(sb); |
9512135d TM |
2988 | kfree(calldata); |
2989 | } | |
2990 | ||
963d8fe5 | 2991 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2992 | { |
963d8fe5 | 2993 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2994 | struct nfs4_state *state = calldata->state; |
1da177e4 | 2995 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 2996 | nfs4_stateid *res_stateid = NULL; |
1da177e4 | 2997 | |
a3ca5651 | 2998 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2999 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3000 | return; | |
42113a75 | 3001 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
1da177e4 LT |
3002 | /* hmm. we are done with the inode, and in the process of freeing |
3003 | * the state_owner. we keep this around to process errors | |
3004 | */ | |
1da177e4 LT |
3005 | switch (task->tk_status) { |
3006 | case 0: | |
412f6c4c | 3007 | res_stateid = &calldata->res.stateid; |
3c13cb5b | 3008 | if (calldata->roc) |
f7e8917a FI |
3009 | pnfs_roc_set_barrier(state->inode, |
3010 | calldata->roc_barrier); | |
26e976a8 | 3011 | renew_lease(server, calldata->timestamp); |
412f6c4c | 3012 | break; |
69794ad7 | 3013 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 3014 | case -NFS4ERR_STALE_STATEID: |
26d36301 TM |
3015 | case -NFS4ERR_EXPIRED: |
3016 | nfs4_free_revoked_stateid(server, | |
3017 | &calldata->arg.stateid, | |
3018 | task->tk_msg.rpc_cred); | |
9e33bed5 TM |
3019 | case -NFS4ERR_OLD_STATEID: |
3020 | case -NFS4ERR_BAD_STATEID: | |
566fcec6 | 3021 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
369d6b7f | 3022 | &state->open_stateid)) { |
566fcec6 TM |
3023 | rpc_restart_call_prepare(task); |
3024 | goto out_release; | |
3025 | } | |
dc0b027d | 3026 | if (calldata->arg.fmode == 0) |
9e33bed5 | 3027 | break; |
1da177e4 | 3028 | default: |
8478eaa1 | 3029 | if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { |
72211dbe | 3030 | rpc_restart_call_prepare(task); |
69794ad7 TM |
3031 | goto out_release; |
3032 | } | |
1da177e4 | 3033 | } |
4a1e2feb TM |
3034 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
3035 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 3036 | out_release: |
72211dbe | 3037 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 3038 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 3039 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
3040 | } |
3041 | ||
4ce70ada | 3042 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 3043 | { |
4ce70ada | 3044 | struct nfs4_closedata *calldata = data; |
9512135d | 3045 | struct nfs4_state *state = calldata->state; |
7fdab069 | 3046 | struct inode *inode = calldata->inode; |
aee7af35 | 3047 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 3048 | int call_close = 0; |
9512135d | 3049 | |
a3ca5651 | 3050 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 3051 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 3052 | goto out_wait; |
003707c7 | 3053 | |
88069f77 | 3054 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 3055 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
3056 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
3057 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
3058 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
369d6b7f | 3059 | nfs4_stateid_copy(&calldata->arg.stateid, &state->open_stateid); |
003707c7 | 3060 | /* Calculate the change in open mode */ |
cd9288ff | 3061 | calldata->arg.fmode = 0; |
e7616923 | 3062 | if (state->n_rdwr == 0) { |
cd9288ff TM |
3063 | if (state->n_rdonly == 0) |
3064 | call_close |= is_rdonly; | |
3065 | else if (is_rdonly) | |
3066 | calldata->arg.fmode |= FMODE_READ; | |
3067 | if (state->n_wronly == 0) | |
3068 | call_close |= is_wronly; | |
3069 | else if (is_wronly) | |
3070 | calldata->arg.fmode |= FMODE_WRITE; | |
e547f262 TM |
3071 | if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE)) |
3072 | call_close |= is_rdwr; | |
cd9288ff TM |
3073 | } else if (is_rdwr) |
3074 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
3075 | ||
5d422301 TM |
3076 | if (!nfs4_valid_open_stateid(state)) |
3077 | call_close = 0; | |
4cecb76f | 3078 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
3079 | |
3080 | if (!call_close) { | |
963d8fe5 | 3081 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 3082 | goto out_no_action; |
9512135d | 3083 | } |
88069f77 | 3084 | |
500d701f PT |
3085 | if (nfs4_wait_on_layoutreturn(inode, task)) { |
3086 | nfs_release_seqid(calldata->arg.seqid); | |
3087 | goto out_wait; | |
3088 | } | |
3089 | ||
3c13cb5b | 3090 | if (calldata->arg.fmode == 0) |
88069f77 | 3091 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3c13cb5b TM |
3092 | if (calldata->roc) |
3093 | pnfs_roc_get_barrier(inode, &calldata->roc_barrier); | |
3094 | ||
6ae37339 TM |
3095 | calldata->arg.share_access = |
3096 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
3097 | calldata->arg.fmode, 0); | |
88069f77 | 3098 | |
516a6af6 | 3099 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 3100 | calldata->timestamp = jiffies; |
7fdab069 | 3101 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
3102 | &calldata->arg.seq_args, |
3103 | &calldata->res.seq_res, | |
2240a9e2 TM |
3104 | task) != 0) |
3105 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 3106 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
3107 | return; |
3108 | out_no_action: | |
3109 | task->tk_action = NULL; | |
3110 | out_wait: | |
3111 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
3112 | } |
3113 | ||
963d8fe5 | 3114 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 3115 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
3116 | .rpc_call_done = nfs4_close_done, |
3117 | .rpc_release = nfs4_free_closedata, | |
3118 | }; | |
3119 | ||
fe08c546 PT |
3120 | static bool nfs4_roc(struct inode *inode) |
3121 | { | |
40dd4b7a | 3122 | if (!nfs_have_layout(inode)) |
fe08c546 | 3123 | return false; |
fe08c546 PT |
3124 | return pnfs_roc(inode); |
3125 | } | |
3126 | ||
1da177e4 LT |
3127 | /* |
3128 | * It is possible for data to be read/written from a mem-mapped file | |
3129 | * after the sys_close call (which hits the vfs layer as a flush). | |
3130 | * This means that we can't safely call nfsv4 close on a file until | |
3131 | * the inode is cleared. This in turn means that we are not good | |
3132 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
3133 | * share state even when we are done with one of the three share | |
3134 | * stateid's in the inode. | |
3135 | * | |
3136 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
3137 | */ | |
1f7977c1 | 3138 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 3139 | { |
4a35bd41 | 3140 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 3141 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 3142 | struct nfs4_closedata *calldata; |
b39e625b TM |
3143 | struct nfs4_state_owner *sp = state->owner; |
3144 | struct rpc_task *task; | |
5138fde0 TM |
3145 | struct rpc_message msg = { |
3146 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
3147 | .rpc_cred = state->owner->so_cred, | |
3148 | }; | |
c970aa85 TM |
3149 | struct rpc_task_setup task_setup_data = { |
3150 | .rpc_client = server->client, | |
5138fde0 | 3151 | .rpc_message = &msg, |
c970aa85 | 3152 | .callback_ops = &nfs4_close_ops, |
101070ca | 3153 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3154 | .flags = RPC_TASK_ASYNC, |
3155 | }; | |
9512135d | 3156 | int status = -ENOMEM; |
1da177e4 | 3157 | |
fa940720 WAA |
3158 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
3159 | &task_setup_data.rpc_client, &msg); | |
3160 | ||
8535b2be | 3161 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 3162 | if (calldata == NULL) |
9512135d | 3163 | goto out; |
a9c92d6b | 3164 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 3165 | calldata->inode = state->inode; |
1da177e4 | 3166 | calldata->state = state; |
4a35bd41 | 3167 | calldata->arg.fh = NFS_FH(state->inode); |
1da177e4 | 3168 | /* Serialization for the sequence id */ |
63f5f796 TM |
3169 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
3170 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 3171 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 3172 | goto out_free_calldata; |
dc0b027d | 3173 | calldata->arg.fmode = 0; |
a65318bf | 3174 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 3175 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 3176 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 3177 | calldata->res.server = server; |
fe08c546 | 3178 | calldata->roc = nfs4_roc(state->inode); |
643168c2 | 3179 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 3180 | |
1174dd1f TM |
3181 | msg.rpc_argp = &calldata->arg; |
3182 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
3183 | task_setup_data.callback_data = calldata; |
3184 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
3185 | if (IS_ERR(task)) |
3186 | return PTR_ERR(task); | |
a49c3c77 TM |
3187 | status = 0; |
3188 | if (wait) | |
3189 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 3190 | rpc_put_task(task); |
a49c3c77 | 3191 | return status; |
9512135d TM |
3192 | out_free_calldata: |
3193 | kfree(calldata); | |
3194 | out: | |
b39e625b TM |
3195 | nfs4_put_open_state(state); |
3196 | nfs4_put_state_owner(sp); | |
9512135d | 3197 | return status; |
1da177e4 LT |
3198 | } |
3199 | ||
2b484297 | 3200 | static struct inode * |
5bc2afc2 TM |
3201 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
3202 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 3203 | { |
1da177e4 | 3204 | struct nfs4_state *state; |
aa9c2669 DQ |
3205 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
3206 | ||
3207 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 3208 | |
565277f6 | 3209 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 3210 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
3211 | |
3212 | nfs4_label_release_security(label); | |
3213 | ||
f46e0bd3 TM |
3214 | if (IS_ERR(state)) |
3215 | return ERR_CAST(state); | |
275bb307 | 3216 | return state->inode; |
1da177e4 LT |
3217 | } |
3218 | ||
1185a552 | 3219 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3220 | { |
3221 | if (ctx->state == NULL) | |
3222 | return; | |
3223 | if (is_sync) | |
643168c2 | 3224 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 3225 | else |
643168c2 | 3226 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 3227 | } |
1da177e4 | 3228 | |
b944dba3 TM |
3229 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3230 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
999e5683 | 3231 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL) |
b944dba3 | 3232 | |
1da177e4 LT |
3233 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3234 | { | |
8c61282f | 3235 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3236 | struct nfs4_server_caps_arg args = { |
3237 | .fhandle = fhandle, | |
8c61282f | 3238 | .bitmask = bitmask, |
43652ad5 | 3239 | }; |
1da177e4 LT |
3240 | struct nfs4_server_caps_res res = {}; |
3241 | struct rpc_message msg = { | |
3242 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3243 | .rpc_argp = &args, |
1da177e4 LT |
3244 | .rpc_resp = &res, |
3245 | }; | |
3246 | int status; | |
3247 | ||
8c61282f KM |
3248 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3249 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3250 | FATTR4_WORD0_LINK_SUPPORT | | |
3251 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3252 | FATTR4_WORD0_ACLSUPPORT; | |
3253 | if (minorversion) | |
3254 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3255 | ||
7c513058 | 3256 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3257 | if (status == 0) { |
b944dba3 | 3258 | /* Sanity check the server answers */ |
8c61282f | 3259 | switch (minorversion) { |
b944dba3 TM |
3260 | case 0: |
3261 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3262 | res.attr_bitmask[2] = 0; | |
3263 | break; | |
3264 | case 1: | |
3265 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3266 | break; | |
3267 | case 2: | |
3268 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3269 | } | |
1da177e4 | 3270 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
62ab460c TM |
3271 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
3272 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
3273 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
3274 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
b944dba3 TM |
3275 | NFS_CAP_CTIME|NFS_CAP_MTIME| |
3276 | NFS_CAP_SECURITY_LABEL); | |
7dd7d959 MN |
3277 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3278 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3279 | server->caps |= NFS_CAP_ACLS; |
3280 | if (res.has_links != 0) | |
3281 | server->caps |= NFS_CAP_HARDLINKS; | |
3282 | if (res.has_symlinks != 0) | |
3283 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
3284 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
3285 | server->caps |= NFS_CAP_FILEID; | |
3286 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
3287 | server->caps |= NFS_CAP_MODE; | |
3288 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
3289 | server->caps |= NFS_CAP_NLINK; | |
3290 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
3291 | server->caps |= NFS_CAP_OWNER; | |
3292 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
3293 | server->caps |= NFS_CAP_OWNER_GROUP; | |
3294 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
3295 | server->caps |= NFS_CAP_ATIME; | |
3296 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
3297 | server->caps |= NFS_CAP_CTIME; | |
3298 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
3299 | server->caps |= NFS_CAP_MTIME; | |
aa9c2669 DQ |
3300 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3301 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3302 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3303 | #endif | |
3304 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, | |
3305 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3306 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3307 | |
a65318bf TM |
3308 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3309 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3310 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3311 | server->cache_consistency_bitmask[2] = 0; |
8c61282f KM |
3312 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3313 | sizeof(server->exclcreat_bitmask)); | |
1da177e4 | 3314 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3315 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3316 | } |
cccef3b9 | 3317 | |
1da177e4 LT |
3318 | return status; |
3319 | } | |
3320 | ||
55a97593 | 3321 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
3322 | { |
3323 | struct nfs4_exception exception = { }; | |
3324 | int err; | |
3325 | do { | |
3326 | err = nfs4_handle_exception(server, | |
3327 | _nfs4_server_capabilities(server, fhandle), | |
3328 | &exception); | |
3329 | } while (exception.retry); | |
3330 | return err; | |
3331 | } | |
3332 | ||
3333 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3334 | struct nfs_fsinfo *info) | |
3335 | { | |
aa9c2669 | 3336 | u32 bitmask[3]; |
1da177e4 | 3337 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3338 | .bitmask = bitmask, |
1da177e4 LT |
3339 | }; |
3340 | struct nfs4_lookup_res res = { | |
3341 | .server = server, | |
0e574af1 | 3342 | .fattr = info->fattr, |
1da177e4 LT |
3343 | .fh = fhandle, |
3344 | }; | |
3345 | struct rpc_message msg = { | |
3346 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3347 | .rpc_argp = &args, | |
3348 | .rpc_resp = &res, | |
3349 | }; | |
008f55d0 | 3350 | |
aa9c2669 DQ |
3351 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3352 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3353 | /* | |
3354 | * Process the label in the upcoming getfattr | |
3355 | */ | |
3356 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3357 | ||
0e574af1 | 3358 | nfs_fattr_init(info->fattr); |
7c513058 | 3359 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3360 | } |
3361 | ||
3362 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3363 | struct nfs_fsinfo *info) | |
3364 | { | |
3365 | struct nfs4_exception exception = { }; | |
3366 | int err; | |
3367 | do { | |
fb8a5ba8 | 3368 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3369 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3370 | switch (err) { |
3371 | case 0: | |
3372 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3373 | goto out; |
fb8a5ba8 BS |
3374 | default: |
3375 | err = nfs4_handle_exception(server, err, &exception); | |
3376 | } | |
1da177e4 | 3377 | } while (exception.retry); |
05e9cfb4 | 3378 | out: |
1da177e4 LT |
3379 | return err; |
3380 | } | |
3381 | ||
8f70e95f BS |
3382 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3383 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3384 | { | |
c2190661 TM |
3385 | struct rpc_auth_create_args auth_args = { |
3386 | .pseudoflavor = flavor, | |
3387 | }; | |
8f70e95f BS |
3388 | struct rpc_auth *auth; |
3389 | int ret; | |
3390 | ||
c2190661 | 3391 | auth = rpcauth_create(&auth_args, server->client); |
e8d920c5 | 3392 | if (IS_ERR(auth)) { |
75bc8821 | 3393 | ret = -EACCES; |
8f70e95f BS |
3394 | goto out; |
3395 | } | |
3396 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
3397 | out: |
3398 | return ret; | |
3399 | } | |
3400 | ||
9a744ba3 CL |
3401 | /* |
3402 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
3403 | * | |
3404 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
3405 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
3406 | * | |
3407 | * Returns zero on success, or a negative NFS4ERR value, or a | |
3408 | * negative errno value. | |
3409 | */ | |
801a16dc | 3410 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 3411 | struct nfs_fsinfo *info) |
1da177e4 | 3412 | { |
9a744ba3 CL |
3413 | /* Per 3530bis 15.33.5 */ |
3414 | static const rpc_authflavor_t flav_array[] = { | |
3415 | RPC_AUTH_GSS_KRB5P, | |
3416 | RPC_AUTH_GSS_KRB5I, | |
3417 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 3418 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
3419 | RPC_AUTH_NULL, |
3420 | }; | |
3421 | int status = -EPERM; | |
3422 | size_t i; | |
6a1a1e34 | 3423 | |
4d4b69dd WAA |
3424 | if (server->auth_info.flavor_len > 0) { |
3425 | /* try each flavor specified by user */ | |
3426 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
3427 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3428 | server->auth_info.flavors[i]); | |
3429 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3430 | continue; | |
3431 | break; | |
3432 | } | |
3433 | } else { | |
3434 | /* no flavors specified by user, try default list */ | |
3435 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
3436 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
3437 | flav_array[i]); | |
3438 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
3439 | continue; | |
3440 | break; | |
3441 | } | |
8f70e95f | 3442 | } |
9a744ba3 | 3443 | |
fb8a5ba8 BS |
3444 | /* |
3445 | * -EACCESS could mean that the user doesn't have correct permissions | |
3446 | * to access the mount. It could also mean that we tried to mount | |
3447 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
3448 | * existing mount programs don't handle -EACCES very well so it should | |
3449 | * be mapped to -EPERM instead. | |
3450 | */ | |
3451 | if (status == -EACCES) | |
3452 | status = -EPERM; | |
801a16dc BS |
3453 | return status; |
3454 | } | |
3455 | ||
2ed4b95b CL |
3456 | /** |
3457 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
3458 | * @server: initialized nfs_server handle | |
3459 | * @fhandle: we fill in the pseudo-fs root file handle | |
3460 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 3461 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
3462 | * |
3463 | * Returns zero on success, or a negative errno. | |
801a16dc | 3464 | */ |
3028eb2b | 3465 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
3466 | struct nfs_fsinfo *info, |
3467 | bool auth_probe) | |
801a16dc | 3468 | { |
c7757074 | 3469 | int status = 0; |
2ed4b95b | 3470 | |
c7757074 | 3471 | if (!auth_probe) |
5e6b1990 | 3472 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
3473 | |
3474 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
698c937b TM |
3475 | status = server->nfs_client->cl_mvops->find_root_sec(server, |
3476 | fhandle, info); | |
2ed4b95b | 3477 | |
1da177e4 LT |
3478 | if (status == 0) |
3479 | status = nfs4_server_capabilities(server, fhandle); | |
3480 | if (status == 0) | |
3481 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 3482 | |
c12e87f4 | 3483 | return nfs4_map_errors(status); |
1da177e4 LT |
3484 | } |
3485 | ||
bae36241 BS |
3486 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
3487 | struct nfs_fsinfo *info) | |
3488 | { | |
3489 | int error; | |
3490 | struct nfs_fattr *fattr = info->fattr; | |
1775fd3e | 3491 | struct nfs4_label *label = NULL; |
bae36241 BS |
3492 | |
3493 | error = nfs4_server_capabilities(server, mntfh); | |
3494 | if (error < 0) { | |
3495 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
3496 | return error; | |
3497 | } | |
3498 | ||
14c43f76 DQ |
3499 | label = nfs4_label_alloc(server, GFP_KERNEL); |
3500 | if (IS_ERR(label)) | |
3501 | return PTR_ERR(label); | |
3502 | ||
1775fd3e | 3503 | error = nfs4_proc_getattr(server, mntfh, fattr, label); |
bae36241 BS |
3504 | if (error < 0) { |
3505 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
14c43f76 | 3506 | goto err_free_label; |
bae36241 BS |
3507 | } |
3508 | ||
3509 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
3510 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
3511 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
3512 | ||
14c43f76 DQ |
3513 | err_free_label: |
3514 | nfs4_label_free(label); | |
3515 | ||
bae36241 BS |
3516 | return error; |
3517 | } | |
3518 | ||
6b97fd3d MN |
3519 | /* |
3520 | * Get locations and (maybe) other attributes of a referral. | |
3521 | * Note that we'll actually follow the referral later when | |
3522 | * we detect fsid mismatch in inode revalidation | |
3523 | */ | |
f05d147f BS |
3524 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
3525 | const struct qstr *name, struct nfs_fattr *fattr, | |
3526 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
3527 | { |
3528 | int status = -ENOMEM; | |
3529 | struct page *page = NULL; | |
3530 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
3531 | |
3532 | page = alloc_page(GFP_KERNEL); | |
3533 | if (page == NULL) | |
3534 | goto out; | |
3535 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3536 | if (locations == NULL) | |
3537 | goto out; | |
3538 | ||
f05d147f | 3539 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
3540 | if (status != 0) |
3541 | goto out; | |
519ae255 CL |
3542 | |
3543 | /* | |
3544 | * If the fsid didn't change, this is a migration event, not a | |
3545 | * referral. Cause us to drop into the exception handler, which | |
3546 | * will kick off migration recovery. | |
3547 | */ | |
6b97fd3d | 3548 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
3549 | dprintk("%s: server did not return a different fsid for" |
3550 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 3551 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
3552 | goto out; |
3553 | } | |
533eb461 AA |
3554 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
3555 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 3556 | |
533eb461 | 3557 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 3558 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
3559 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
3560 | out: | |
3561 | if (page) | |
3562 | __free_page(page); | |
5d7ca35a | 3563 | kfree(locations); |
6b97fd3d MN |
3564 | return status; |
3565 | } | |
3566 | ||
1775fd3e DQ |
3567 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3568 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3569 | { |
3570 | struct nfs4_getattr_arg args = { | |
3571 | .fh = fhandle, | |
3572 | .bitmask = server->attr_bitmask, | |
3573 | }; | |
3574 | struct nfs4_getattr_res res = { | |
3575 | .fattr = fattr, | |
1775fd3e | 3576 | .label = label, |
1da177e4 LT |
3577 | .server = server, |
3578 | }; | |
3579 | struct rpc_message msg = { | |
3580 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
3581 | .rpc_argp = &args, | |
3582 | .rpc_resp = &res, | |
3583 | }; | |
aa9c2669 DQ |
3584 | |
3585 | args.bitmask = nfs4_bitmask(server, label); | |
3586 | ||
0e574af1 | 3587 | nfs_fattr_init(fattr); |
7c513058 | 3588 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3589 | } |
3590 | ||
1775fd3e DQ |
3591 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
3592 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
1da177e4 LT |
3593 | { |
3594 | struct nfs4_exception exception = { }; | |
3595 | int err; | |
3596 | do { | |
b5f875a9 TM |
3597 | err = _nfs4_proc_getattr(server, fhandle, fattr, label); |
3598 | trace_nfs4_getattr(server, fhandle, fattr, err); | |
3599 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
3600 | &exception); |
3601 | } while (exception.retry); | |
3602 | return err; | |
3603 | } | |
3604 | ||
3605 | /* | |
3606 | * The file is not closed if it is opened due to the a request to change | |
3607 | * the size of the file. The open call will not be needed once the | |
3608 | * VFS layer lookup-intents are implemented. | |
3609 | * | |
3610 | * Close is called when the inode is destroyed. | |
3611 | * If we haven't opened the file for O_WRONLY, we | |
3612 | * need to in the size_change case to obtain a stateid. | |
3613 | * | |
3614 | * Got race? | |
3615 | * Because OPEN is always done by name in nfsv4, it is | |
3616 | * possible that we opened a different file by the same | |
3617 | * name. We can recognize this race condition, but we | |
3618 | * can't do anything about it besides returning an error. | |
3619 | * | |
3620 | * This will be fixed with VFS changes (lookup-intent). | |
3621 | */ | |
3622 | static int | |
3623 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
3624 | struct iattr *sattr) | |
3625 | { | |
2b0143b5 | 3626 | struct inode *inode = d_inode(dentry); |
659bfcd6 | 3627 | struct rpc_cred *cred = NULL; |
d530838b | 3628 | struct nfs4_state *state = NULL; |
14c43f76 | 3629 | struct nfs4_label *label = NULL; |
1da177e4 LT |
3630 | int status; |
3631 | ||
88ac815c PT |
3632 | if (pnfs_ld_layoutret_on_setattr(inode) && |
3633 | sattr->ia_valid & ATTR_SIZE && | |
3634 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 3635 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 3636 | |
0e574af1 | 3637 | nfs_fattr_init(fattr); |
1da177e4 | 3638 | |
2669940d AA |
3639 | /* Deal with open(O_TRUNC) */ |
3640 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 3641 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
3642 | |
3643 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 3644 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
3645 | return 0; |
3646 | ||
d530838b | 3647 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
3648 | if (sattr->ia_valid & ATTR_FILE) { |
3649 | struct nfs_open_context *ctx; | |
3650 | ||
3651 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
3652 | if (ctx) { |
3653 | cred = ctx->cred; | |
3654 | state = ctx->state; | |
3655 | } | |
659bfcd6 | 3656 | } |
08e9eac4 | 3657 | |
14c43f76 DQ |
3658 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
3659 | if (IS_ERR(label)) | |
3660 | return PTR_ERR(label); | |
3661 | ||
3662 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label); | |
aa9c2669 | 3663 | if (status == 0) { |
f044636d | 3664 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
3665 | nfs_setsecurity(inode, fattr, label); |
3666 | } | |
14c43f76 | 3667 | nfs4_label_free(label); |
1da177e4 LT |
3668 | return status; |
3669 | } | |
3670 | ||
0c2e53f1 TM |
3671 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
3672 | const struct qstr *name, struct nfs_fh *fhandle, | |
1775fd3e | 3673 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 3674 | { |
0c2e53f1 | 3675 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
3676 | int status; |
3677 | struct nfs4_lookup_arg args = { | |
3678 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 3679 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
3680 | .name = name, |
3681 | }; | |
3682 | struct nfs4_lookup_res res = { | |
3683 | .server = server, | |
3684 | .fattr = fattr, | |
aa9c2669 | 3685 | .label = label, |
2b3de441 DH |
3686 | .fh = fhandle, |
3687 | }; | |
3688 | struct rpc_message msg = { | |
3689 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
3690 | .rpc_argp = &args, | |
3691 | .rpc_resp = &res, | |
3692 | }; | |
3693 | ||
aa9c2669 DQ |
3694 | args.bitmask = nfs4_bitmask(server, label); |
3695 | ||
2b3de441 DH |
3696 | nfs_fattr_init(fattr); |
3697 | ||
1da177e4 | 3698 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 3699 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3700 | dprintk("NFS reply lookup: %d\n", status); |
3701 | return status; | |
3702 | } | |
3703 | ||
72de53ec | 3704 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 3705 | { |
7ebb9315 | 3706 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 3707 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
3708 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
3709 | fattr->nlink = 2; | |
3710 | } | |
3711 | ||
72de53ec | 3712 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
beffb8fe | 3713 | const struct qstr *name, struct nfs_fh *fhandle, |
1775fd3e | 3714 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 LT |
3715 | { |
3716 | struct nfs4_exception exception = { }; | |
72de53ec | 3717 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
3718 | int err; |
3719 | do { | |
1775fd3e | 3720 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label); |
078ea3df | 3721 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 3722 | switch (err) { |
08ef7bd3 | 3723 | case -NFS4ERR_BADNAME: |
72de53ec BS |
3724 | err = -ENOENT; |
3725 | goto out; | |
0c2e53f1 | 3726 | case -NFS4ERR_MOVED: |
f05d147f | 3727 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
3728 | if (err == -NFS4ERR_MOVED) |
3729 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 3730 | goto out; |
0c2e53f1 | 3731 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
3732 | err = -EPERM; |
3733 | if (client != *clnt) | |
3734 | goto out; | |
66b06860 | 3735 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
3736 | if (IS_ERR(client)) |
3737 | return PTR_ERR(client); | |
3738 | ||
3739 | exception.retry = 1; | |
3740 | break; | |
3741 | default: | |
3742 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 3743 | } |
1da177e4 | 3744 | } while (exception.retry); |
72de53ec BS |
3745 | |
3746 | out: | |
3747 | if (err == 0) | |
3748 | *clnt = client; | |
3749 | else if (client != *clnt) | |
3750 | rpc_shutdown_client(client); | |
3751 | ||
1da177e4 LT |
3752 | return err; |
3753 | } | |
3754 | ||
beffb8fe | 3755 | static int nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1775fd3e DQ |
3756 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
3757 | struct nfs4_label *label) | |
72de53ec BS |
3758 | { |
3759 | int status; | |
3760 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
3761 | ||
1775fd3e | 3762 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label); |
72de53ec BS |
3763 | if (client != NFS_CLIENT(dir)) { |
3764 | rpc_shutdown_client(client); | |
3765 | nfs_fixup_secinfo_attributes(fattr); | |
3766 | } | |
3767 | return status; | |
3768 | } | |
3769 | ||
f05d147f | 3770 | struct rpc_clnt * |
beffb8fe | 3771 | nfs4_proc_lookup_mountpoint(struct inode *dir, const struct qstr *name, |
f05d147f BS |
3772 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
3773 | { | |
b72888cb | 3774 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 3775 | int status; |
f05d147f | 3776 | |
1775fd3e | 3777 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL); |
b72888cb | 3778 | if (status < 0) |
f05d147f | 3779 | return ERR_PTR(status); |
b72888cb | 3780 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
3781 | } |
3782 | ||
1da177e4 LT |
3783 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
3784 | { | |
76b32999 | 3785 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3786 | struct nfs4_accessargs args = { |
3787 | .fh = NFS_FH(inode), | |
a4980e78 | 3788 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
3789 | }; |
3790 | struct nfs4_accessres res = { | |
3791 | .server = server, | |
1da177e4 | 3792 | }; |
1da177e4 LT |
3793 | struct rpc_message msg = { |
3794 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
3795 | .rpc_argp = &args, | |
3796 | .rpc_resp = &res, | |
3797 | .rpc_cred = entry->cred, | |
3798 | }; | |
3799 | int mode = entry->mask; | |
aa9c2669 | 3800 | int status = 0; |
1da177e4 LT |
3801 | |
3802 | /* | |
3803 | * Determine which access bits we want to ask for... | |
3804 | */ | |
3805 | if (mode & MAY_READ) | |
3806 | args.access |= NFS4_ACCESS_READ; | |
3807 | if (S_ISDIR(inode->i_mode)) { | |
3808 | if (mode & MAY_WRITE) | |
3809 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
3810 | if (mode & MAY_EXEC) | |
3811 | args.access |= NFS4_ACCESS_LOOKUP; | |
3812 | } else { | |
3813 | if (mode & MAY_WRITE) | |
3814 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
3815 | if (mode & MAY_EXEC) | |
3816 | args.access |= NFS4_ACCESS_EXECUTE; | |
3817 | } | |
c407d41a TM |
3818 | |
3819 | res.fattr = nfs_alloc_fattr(); | |
3820 | if (res.fattr == NULL) | |
3821 | return -ENOMEM; | |
3822 | ||
7c513058 | 3823 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3824 | if (!status) { |
6168f62c | 3825 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3826 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3827 | } |
c407d41a | 3828 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3829 | return status; |
3830 | } | |
3831 | ||
3832 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3833 | { | |
3834 | struct nfs4_exception exception = { }; | |
3835 | int err; | |
3836 | do { | |
c1578b76 TM |
3837 | err = _nfs4_proc_access(inode, entry); |
3838 | trace_nfs4_access(inode, err); | |
3839 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3840 | &exception); |
3841 | } while (exception.retry); | |
3842 | return err; | |
3843 | } | |
3844 | ||
3845 | /* | |
3846 | * TODO: For the time being, we don't try to get any attributes | |
3847 | * along with any of the zero-copy operations READ, READDIR, | |
3848 | * READLINK, WRITE. | |
3849 | * | |
3850 | * In the case of the first three, we want to put the GETATTR | |
3851 | * after the read-type operation -- this is because it is hard | |
3852 | * to predict the length of a GETATTR response in v4, and thus | |
3853 | * align the READ data correctly. This means that the GETATTR | |
3854 | * may end up partially falling into the page cache, and we should | |
3855 | * shift it into the 'tail' of the xdr_buf before processing. | |
3856 | * To do this efficiently, we need to know the total length | |
3857 | * of data received, which doesn't seem to be available outside | |
3858 | * of the RPC layer. | |
3859 | * | |
3860 | * In the case of WRITE, we also want to put the GETATTR after | |
3861 | * the operation -- in this case because we want to make sure | |
140150db | 3862 | * we get the post-operation mtime and size. |
1da177e4 LT |
3863 | * |
3864 | * Both of these changes to the XDR layer would in fact be quite | |
3865 | * minor, but I decided to leave them for a subsequent patch. | |
3866 | */ | |
3867 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3868 | unsigned int pgbase, unsigned int pglen) | |
3869 | { | |
3870 | struct nfs4_readlink args = { | |
3871 | .fh = NFS_FH(inode), | |
3872 | .pgbase = pgbase, | |
3873 | .pglen = pglen, | |
3874 | .pages = &page, | |
3875 | }; | |
f50c7000 | 3876 | struct nfs4_readlink_res res; |
1da177e4 LT |
3877 | struct rpc_message msg = { |
3878 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3879 | .rpc_argp = &args, | |
f50c7000 | 3880 | .rpc_resp = &res, |
1da177e4 LT |
3881 | }; |
3882 | ||
7c513058 | 3883 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3884 | } |
3885 | ||
3886 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3887 | unsigned int pgbase, unsigned int pglen) | |
3888 | { | |
3889 | struct nfs4_exception exception = { }; | |
3890 | int err; | |
3891 | do { | |
c1578b76 TM |
3892 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
3893 | trace_nfs4_readlink(inode, err); | |
3894 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
3895 | &exception); |
3896 | } while (exception.retry); | |
3897 | return err; | |
3898 | } | |
3899 | ||
1da177e4 | 3900 | /* |
8867fe58 | 3901 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3902 | */ |
1da177e4 LT |
3903 | static int |
3904 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3905 | int flags) |
1da177e4 | 3906 | { |
aa9c2669 | 3907 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 3908 | struct nfs_open_context *ctx; |
1da177e4 | 3909 | struct nfs4_state *state; |
1da177e4 LT |
3910 | int status = 0; |
3911 | ||
8867fe58 MS |
3912 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3913 | if (IS_ERR(ctx)) | |
3914 | return PTR_ERR(ctx); | |
3915 | ||
aa9c2669 DQ |
3916 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
3917 | ||
a8a5da99 | 3918 | sattr->ia_mode &= ~current_umask(); |
c5c3fb5f | 3919 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
3920 | if (IS_ERR(state)) { |
3921 | status = PTR_ERR(state); | |
c0204fd2 | 3922 | goto out; |
1da177e4 | 3923 | } |
1da177e4 | 3924 | out: |
aa9c2669 | 3925 | nfs4_label_release_security(ilabel); |
8867fe58 | 3926 | put_nfs_open_context(ctx); |
1da177e4 LT |
3927 | return status; |
3928 | } | |
3929 | ||
beffb8fe | 3930 | static int _nfs4_proc_remove(struct inode *dir, const struct qstr *name) |
1da177e4 | 3931 | { |
16e42959 | 3932 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3933 | struct nfs_removeargs args = { |
1da177e4 | 3934 | .fh = NFS_FH(dir), |
26fe5750 | 3935 | .name = *name, |
16e42959 | 3936 | }; |
4fdc17b2 | 3937 | struct nfs_removeres res = { |
16e42959 | 3938 | .server = server, |
1da177e4 | 3939 | }; |
1da177e4 | 3940 | struct rpc_message msg = { |
4fdc17b2 TM |
3941 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3942 | .rpc_argp = &args, | |
3943 | .rpc_resp = &res, | |
1da177e4 | 3944 | }; |
778d2817 | 3945 | int status; |
1da177e4 | 3946 | |
7c513058 | 3947 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3948 | if (status == 0) |
16e42959 | 3949 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3950 | return status; |
3951 | } | |
3952 | ||
beffb8fe | 3953 | static int nfs4_proc_remove(struct inode *dir, const struct qstr *name) |
1da177e4 LT |
3954 | { |
3955 | struct nfs4_exception exception = { }; | |
3956 | int err; | |
3957 | do { | |
078ea3df TM |
3958 | err = _nfs4_proc_remove(dir, name); |
3959 | trace_nfs4_remove(dir, name, err); | |
3960 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
3961 | &exception); |
3962 | } while (exception.retry); | |
3963 | return err; | |
3964 | } | |
3965 | ||
e4eff1a6 | 3966 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3967 | { |
e4eff1a6 TM |
3968 | struct nfs_server *server = NFS_SERVER(dir); |
3969 | struct nfs_removeargs *args = msg->rpc_argp; | |
3970 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3971 | |
e4eff1a6 | 3972 | res->server = server; |
1da177e4 | 3973 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
a9c92d6b | 3974 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); |
aa9c2669 DQ |
3975 | |
3976 | nfs_fattr_init(res->dir_attr); | |
1da177e4 LT |
3977 | } |
3978 | ||
34e137cc BS |
3979 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3980 | { | |
884be175 | 3981 | nfs4_setup_sequence(NFS_SB(data->dentry->d_sb), |
d9afbd1b TM |
3982 | &data->args.seq_args, |
3983 | &data->res.seq_res, | |
3984 | task); | |
1da177e4 LT |
3985 | } |
3986 | ||
e4eff1a6 | 3987 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3988 | { |
078ea3df TM |
3989 | struct nfs_unlinkdata *data = task->tk_calldata; |
3990 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 3991 | |
14516c3a TM |
3992 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3993 | return 0; | |
8478eaa1 N |
3994 | if (nfs4_async_handle_error(task, res->server, NULL, |
3995 | &data->timeout) == -EAGAIN) | |
e4eff1a6 TM |
3996 | return 0; |
3997 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3998 | return 1; |
1da177e4 LT |
3999 | } |
4000 | ||
d3d4152a JL |
4001 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
4002 | { | |
4003 | struct nfs_server *server = NFS_SERVER(dir); | |
4004 | struct nfs_renameargs *arg = msg->rpc_argp; | |
4005 | struct nfs_renameres *res = msg->rpc_resp; | |
4006 | ||
4007 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 4008 | res->server = server; |
a9c92d6b | 4009 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
4010 | } |
4011 | ||
c6bfa1a1 BS |
4012 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
4013 | { | |
d9afbd1b TM |
4014 | nfs4_setup_sequence(NFS_SERVER(data->old_dir), |
4015 | &data->args.seq_args, | |
4016 | &data->res.seq_res, | |
4017 | task); | |
d3d4152a JL |
4018 | } |
4019 | ||
4020 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
4021 | struct inode *new_dir) | |
4022 | { | |
fbc6f7c2 TM |
4023 | struct nfs_renamedata *data = task->tk_calldata; |
4024 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
4025 | |
4026 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
4027 | return 0; | |
8478eaa1 | 4028 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
4029 | return 0; |
4030 | ||
4031 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 4032 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
4033 | return 1; |
4034 | } | |
4035 | ||
beffb8fe | 4036 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 | 4037 | { |
91ba2eee | 4038 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
4039 | struct nfs4_link_arg arg = { |
4040 | .fh = NFS_FH(inode), | |
4041 | .dir_fh = NFS_FH(dir), | |
4042 | .name = name, | |
91ba2eee TM |
4043 | .bitmask = server->attr_bitmask, |
4044 | }; | |
91ba2eee TM |
4045 | struct nfs4_link_res res = { |
4046 | .server = server, | |
1775fd3e | 4047 | .label = NULL, |
1da177e4 | 4048 | }; |
1da177e4 LT |
4049 | struct rpc_message msg = { |
4050 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
4051 | .rpc_argp = &arg, | |
91ba2eee | 4052 | .rpc_resp = &res, |
1da177e4 | 4053 | }; |
136f2627 TM |
4054 | int status = -ENOMEM; |
4055 | ||
4056 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 4057 | if (res.fattr == NULL) |
136f2627 | 4058 | goto out; |
1da177e4 | 4059 | |
14c43f76 DQ |
4060 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
4061 | if (IS_ERR(res.label)) { | |
4062 | status = PTR_ERR(res.label); | |
4063 | goto out; | |
4064 | } | |
aa9c2669 | 4065 | arg.bitmask = nfs4_bitmask(server, res.label); |
14c43f76 | 4066 | |
7c513058 | 4067 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
4068 | if (!status) { |
4069 | update_changeattr(dir, &res.cinfo); | |
aa9c2669 DQ |
4070 | status = nfs_post_op_update_inode(inode, res.fattr); |
4071 | if (!status) | |
4072 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 4073 | } |
14c43f76 DQ |
4074 | |
4075 | ||
4076 | nfs4_label_free(res.label); | |
4077 | ||
136f2627 | 4078 | out: |
136f2627 | 4079 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
4080 | return status; |
4081 | } | |
4082 | ||
beffb8fe | 4083 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 LT |
4084 | { |
4085 | struct nfs4_exception exception = { }; | |
4086 | int err; | |
4087 | do { | |
4088 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4089 | _nfs4_proc_link(inode, dir, name), | |
4090 | &exception); | |
4091 | } while (exception.retry); | |
4092 | return err; | |
4093 | } | |
4094 | ||
57dc9a57 TM |
4095 | struct nfs4_createdata { |
4096 | struct rpc_message msg; | |
4097 | struct nfs4_create_arg arg; | |
4098 | struct nfs4_create_res res; | |
4099 | struct nfs_fh fh; | |
4100 | struct nfs_fattr fattr; | |
1775fd3e | 4101 | struct nfs4_label *label; |
57dc9a57 TM |
4102 | }; |
4103 | ||
4104 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
beffb8fe | 4105 | const struct qstr *name, struct iattr *sattr, u32 ftype) |
57dc9a57 TM |
4106 | { |
4107 | struct nfs4_createdata *data; | |
4108 | ||
4109 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
4110 | if (data != NULL) { | |
4111 | struct nfs_server *server = NFS_SERVER(dir); | |
4112 | ||
14c43f76 DQ |
4113 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
4114 | if (IS_ERR(data->label)) | |
4115 | goto out_free; | |
4116 | ||
57dc9a57 TM |
4117 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
4118 | data->msg.rpc_argp = &data->arg; | |
4119 | data->msg.rpc_resp = &data->res; | |
4120 | data->arg.dir_fh = NFS_FH(dir); | |
4121 | data->arg.server = server; | |
4122 | data->arg.name = name; | |
4123 | data->arg.attrs = sattr; | |
4124 | data->arg.ftype = ftype; | |
aa9c2669 | 4125 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
57dc9a57 TM |
4126 | data->res.server = server; |
4127 | data->res.fh = &data->fh; | |
4128 | data->res.fattr = &data->fattr; | |
1775fd3e | 4129 | data->res.label = data->label; |
57dc9a57 | 4130 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
4131 | } |
4132 | return data; | |
14c43f76 DQ |
4133 | out_free: |
4134 | kfree(data); | |
4135 | return NULL; | |
57dc9a57 TM |
4136 | } |
4137 | ||
4138 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
4139 | { | |
7c513058 | 4140 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 4141 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
4142 | if (status == 0) { |
4143 | update_changeattr(dir, &data->res.dir_cinfo); | |
1775fd3e | 4144 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
4145 | } |
4146 | return status; | |
4147 | } | |
4148 | ||
4149 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
4150 | { | |
14c43f76 | 4151 | nfs4_label_free(data->label); |
57dc9a57 TM |
4152 | kfree(data); |
4153 | } | |
4154 | ||
4f390c15 | 4155 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
4156 | struct page *page, unsigned int len, struct iattr *sattr, |
4157 | struct nfs4_label *label) | |
1da177e4 | 4158 | { |
57dc9a57 TM |
4159 | struct nfs4_createdata *data; |
4160 | int status = -ENAMETOOLONG; | |
1da177e4 | 4161 | |
94a6d753 | 4162 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 4163 | goto out; |
4f390c15 | 4164 | |
57dc9a57 TM |
4165 | status = -ENOMEM; |
4166 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
4167 | if (data == NULL) | |
4168 | goto out; | |
4169 | ||
4170 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
4171 | data->arg.u.symlink.pages = &page; | |
4172 | data->arg.u.symlink.len = len; | |
1775fd3e | 4173 | data->arg.label = label; |
1da177e4 | 4174 | |
57dc9a57 TM |
4175 | status = nfs4_do_create(dir, dentry, data); |
4176 | ||
4177 | nfs4_free_createdata(data); | |
4178 | out: | |
1da177e4 LT |
4179 | return status; |
4180 | } | |
4181 | ||
4f390c15 | 4182 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 4183 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
4184 | { |
4185 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4186 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4187 | int err; |
aa9c2669 DQ |
4188 | |
4189 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
4190 | ||
1da177e4 | 4191 | do { |
078ea3df TM |
4192 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
4193 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
4194 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4195 | &exception); |
4196 | } while (exception.retry); | |
aa9c2669 DQ |
4197 | |
4198 | nfs4_label_release_security(label); | |
1da177e4 LT |
4199 | return err; |
4200 | } | |
4201 | ||
4202 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 4203 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 4204 | { |
57dc9a57 TM |
4205 | struct nfs4_createdata *data; |
4206 | int status = -ENOMEM; | |
1da177e4 | 4207 | |
57dc9a57 TM |
4208 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
4209 | if (data == NULL) | |
4210 | goto out; | |
4211 | ||
1775fd3e | 4212 | data->arg.label = label; |
57dc9a57 TM |
4213 | status = nfs4_do_create(dir, dentry, data); |
4214 | ||
4215 | nfs4_free_createdata(data); | |
4216 | out: | |
1da177e4 LT |
4217 | return status; |
4218 | } | |
4219 | ||
4220 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
4221 | struct iattr *sattr) | |
4222 | { | |
4223 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4224 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4225 | int err; |
a8a5da99 | 4226 | |
aa9c2669 DQ |
4227 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4228 | ||
a8a5da99 | 4229 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4230 | do { |
078ea3df TM |
4231 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
4232 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
4233 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4234 | &exception); |
4235 | } while (exception.retry); | |
aa9c2669 DQ |
4236 | nfs4_label_release_security(label); |
4237 | ||
1da177e4 LT |
4238 | return err; |
4239 | } | |
4240 | ||
4241 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4242 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 | 4243 | { |
2b0143b5 | 4244 | struct inode *dir = d_inode(dentry); |
1da177e4 LT |
4245 | struct nfs4_readdir_arg args = { |
4246 | .fh = NFS_FH(dir), | |
56e4ebf8 | 4247 | .pages = pages, |
1da177e4 LT |
4248 | .pgbase = 0, |
4249 | .count = count, | |
2b0143b5 | 4250 | .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask, |
82f2e547 | 4251 | .plus = plus, |
1da177e4 LT |
4252 | }; |
4253 | struct nfs4_readdir_res res; | |
4254 | struct rpc_message msg = { | |
4255 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
4256 | .rpc_argp = &args, | |
4257 | .rpc_resp = &res, | |
4258 | .rpc_cred = cred, | |
4259 | }; | |
4260 | int status; | |
4261 | ||
6de1472f AV |
4262 | dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, |
4263 | dentry, | |
eadf4598 | 4264 | (unsigned long long)cookie); |
c3f52af3 | 4265 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 4266 | res.pgbase = args.pgbase; |
7c513058 | 4267 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 4268 | if (status >= 0) { |
c3f52af3 | 4269 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
4270 | status += args.pgbase; |
4271 | } | |
c4812998 TM |
4272 | |
4273 | nfs_invalidate_atime(dir); | |
4274 | ||
3110ff80 | 4275 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
4276 | return status; |
4277 | } | |
4278 | ||
4279 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 4280 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
4281 | { |
4282 | struct nfs4_exception exception = { }; | |
4283 | int err; | |
4284 | do { | |
c1578b76 TM |
4285 | err = _nfs4_proc_readdir(dentry, cred, cookie, |
4286 | pages, count, plus); | |
2b0143b5 DH |
4287 | trace_nfs4_readdir(d_inode(dentry), err); |
4288 | err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err, | |
1da177e4 LT |
4289 | &exception); |
4290 | } while (exception.retry); | |
4291 | return err; | |
4292 | } | |
4293 | ||
4294 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 4295 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 4296 | { |
57dc9a57 TM |
4297 | struct nfs4_createdata *data; |
4298 | int mode = sattr->ia_mode; | |
4299 | int status = -ENOMEM; | |
1da177e4 | 4300 | |
57dc9a57 TM |
4301 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
4302 | if (data == NULL) | |
4303 | goto out; | |
4304 | ||
1da177e4 | 4305 | if (S_ISFIFO(mode)) |
57dc9a57 | 4306 | data->arg.ftype = NF4FIFO; |
1da177e4 | 4307 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
4308 | data->arg.ftype = NF4BLK; |
4309 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4310 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
4311 | } |
4312 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
4313 | data->arg.ftype = NF4CHR; |
4314 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
4315 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
4316 | } else if (!S_ISSOCK(mode)) { |
4317 | status = -EINVAL; | |
4318 | goto out_free; | |
1da177e4 | 4319 | } |
1775fd3e | 4320 | |
aa9c2669 | 4321 | data->arg.label = label; |
57dc9a57 | 4322 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 4323 | out_free: |
57dc9a57 TM |
4324 | nfs4_free_createdata(data); |
4325 | out: | |
1da177e4 LT |
4326 | return status; |
4327 | } | |
4328 | ||
4329 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
4330 | struct iattr *sattr, dev_t rdev) | |
4331 | { | |
4332 | struct nfs4_exception exception = { }; | |
aa9c2669 | 4333 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4334 | int err; |
a8a5da99 | 4335 | |
aa9c2669 DQ |
4336 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4337 | ||
a8a5da99 | 4338 | sattr->ia_mode &= ~current_umask(); |
1da177e4 | 4339 | do { |
078ea3df TM |
4340 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
4341 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
4342 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4343 | &exception); |
4344 | } while (exception.retry); | |
aa9c2669 DQ |
4345 | |
4346 | nfs4_label_release_security(label); | |
4347 | ||
1da177e4 LT |
4348 | return err; |
4349 | } | |
4350 | ||
4351 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
4352 | struct nfs_fsstat *fsstat) | |
4353 | { | |
4354 | struct nfs4_statfs_arg args = { | |
4355 | .fh = fhandle, | |
4356 | .bitmask = server->attr_bitmask, | |
4357 | }; | |
24ad148a BH |
4358 | struct nfs4_statfs_res res = { |
4359 | .fsstat = fsstat, | |
4360 | }; | |
1da177e4 LT |
4361 | struct rpc_message msg = { |
4362 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
4363 | .rpc_argp = &args, | |
24ad148a | 4364 | .rpc_resp = &res, |
1da177e4 LT |
4365 | }; |
4366 | ||
0e574af1 | 4367 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 4368 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4369 | } |
4370 | ||
4371 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
4372 | { | |
4373 | struct nfs4_exception exception = { }; | |
4374 | int err; | |
4375 | do { | |
4376 | err = nfs4_handle_exception(server, | |
4377 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
4378 | &exception); | |
4379 | } while (exception.retry); | |
4380 | return err; | |
4381 | } | |
4382 | ||
4383 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
4384 | struct nfs_fsinfo *fsinfo) | |
4385 | { | |
4386 | struct nfs4_fsinfo_arg args = { | |
4387 | .fh = fhandle, | |
4388 | .bitmask = server->attr_bitmask, | |
4389 | }; | |
3dda5e43 BH |
4390 | struct nfs4_fsinfo_res res = { |
4391 | .fsinfo = fsinfo, | |
4392 | }; | |
1da177e4 LT |
4393 | struct rpc_message msg = { |
4394 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
4395 | .rpc_argp = &args, | |
3dda5e43 | 4396 | .rpc_resp = &res, |
1da177e4 LT |
4397 | }; |
4398 | ||
7c513058 | 4399 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4400 | } |
4401 | ||
4402 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4403 | { | |
4404 | struct nfs4_exception exception = { }; | |
83ca7f5a | 4405 | unsigned long now = jiffies; |
1da177e4 LT |
4406 | int err; |
4407 | ||
4408 | do { | |
83ca7f5a | 4409 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 4410 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a | 4411 | if (err == 0) { |
fb10fb67 TM |
4412 | nfs4_set_lease_period(server->nfs_client, |
4413 | fsinfo->lease_time * HZ, | |
4414 | now); | |
83ca7f5a CL |
4415 | break; |
4416 | } | |
4417 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
4418 | } while (exception.retry); |
4419 | return err; | |
4420 | } | |
4421 | ||
4422 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
4423 | { | |
e38eb650 BS |
4424 | int error; |
4425 | ||
0e574af1 | 4426 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 4427 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
4428 | if (error == 0) { |
4429 | /* block layout checks this! */ | |
4430 | server->pnfs_blksize = fsinfo->blksize; | |
ca440c38 | 4431 | set_pnfs_layoutdriver(server, fhandle, fsinfo); |
dc182549 | 4432 | } |
e38eb650 BS |
4433 | |
4434 | return error; | |
1da177e4 LT |
4435 | } |
4436 | ||
4437 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4438 | struct nfs_pathconf *pathconf) | |
4439 | { | |
4440 | struct nfs4_pathconf_arg args = { | |
4441 | .fh = fhandle, | |
4442 | .bitmask = server->attr_bitmask, | |
4443 | }; | |
d45b2989 BH |
4444 | struct nfs4_pathconf_res res = { |
4445 | .pathconf = pathconf, | |
4446 | }; | |
1da177e4 LT |
4447 | struct rpc_message msg = { |
4448 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
4449 | .rpc_argp = &args, | |
d45b2989 | 4450 | .rpc_resp = &res, |
1da177e4 LT |
4451 | }; |
4452 | ||
4453 | /* None of the pathconf attributes are mandatory to implement */ | |
4454 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
4455 | memset(pathconf, 0, sizeof(*pathconf)); | |
4456 | return 0; | |
4457 | } | |
4458 | ||
0e574af1 | 4459 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 4460 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4461 | } |
4462 | ||
4463 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
4464 | struct nfs_pathconf *pathconf) | |
4465 | { | |
4466 | struct nfs4_exception exception = { }; | |
4467 | int err; | |
4468 | ||
4469 | do { | |
4470 | err = nfs4_handle_exception(server, | |
4471 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
4472 | &exception); | |
4473 | } while (exception.retry); | |
4474 | return err; | |
4475 | } | |
4476 | ||
5521abfd | 4477 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
4478 | const struct nfs_open_context *ctx, |
4479 | const struct nfs_lock_context *l_ctx, | |
4480 | fmode_t fmode) | |
4481 | { | |
4482 | const struct nfs_lockowner *lockowner = NULL; | |
4483 | ||
4484 | if (l_ctx != NULL) | |
4485 | lockowner = &l_ctx->lockowner; | |
abf4e13c | 4486 | return nfs4_select_rw_stateid(ctx->state, fmode, lockowner, stateid, NULL); |
9b206149 TM |
4487 | } |
4488 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
4489 | ||
5521abfd TM |
4490 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
4491 | const struct nfs_open_context *ctx, | |
4492 | const struct nfs_lock_context *l_ctx, | |
4493 | fmode_t fmode) | |
4494 | { | |
4495 | nfs4_stateid current_stateid; | |
4496 | ||
e1253be0 TM |
4497 | /* If the current stateid represents a lost lock, then exit */ |
4498 | if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) | |
4499 | return true; | |
5521abfd TM |
4500 | return nfs4_stateid_match(stateid, ¤t_stateid); |
4501 | } | |
4502 | ||
4503 | static bool nfs4_error_stateid_expired(int err) | |
4504 | { | |
4505 | switch (err) { | |
4506 | case -NFS4ERR_DELEG_REVOKED: | |
4507 | case -NFS4ERR_ADMIN_REVOKED: | |
4508 | case -NFS4ERR_BAD_STATEID: | |
4509 | case -NFS4ERR_STALE_STATEID: | |
4510 | case -NFS4ERR_OLD_STATEID: | |
4511 | case -NFS4ERR_OPENMODE: | |
4512 | case -NFS4ERR_EXPIRED: | |
4513 | return true; | |
4514 | } | |
4515 | return false; | |
4516 | } | |
4517 | ||
d45f60c6 | 4518 | void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) |
d20581aa | 4519 | { |
d45f60c6 | 4520 | nfs_invalidate_atime(hdr->inode); |
d20581aa BH |
4521 | } |
4522 | ||
d45f60c6 | 4523 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 4524 | { |
d45f60c6 | 4525 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 4526 | |
d45f60c6 WAA |
4527 | trace_nfs4_read(hdr, task->tk_status); |
4528 | if (nfs4_async_handle_error(task, server, | |
8478eaa1 N |
4529 | hdr->args.context->state, |
4530 | NULL) == -EAGAIN) { | |
d00c5d43 | 4531 | rpc_restart_call_prepare(task); |
ec06c096 | 4532 | return -EAGAIN; |
1da177e4 | 4533 | } |
8850df99 | 4534 | |
d45f60c6 | 4535 | __nfs4_read_done_cb(hdr); |
1da177e4 | 4536 | if (task->tk_status > 0) |
d45f60c6 | 4537 | renew_lease(server, hdr->timestamp); |
ec06c096 | 4538 | return 0; |
1da177e4 LT |
4539 | } |
4540 | ||
5521abfd | 4541 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 4542 | struct nfs_pgio_args *args) |
5521abfd TM |
4543 | { |
4544 | ||
4545 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4546 | nfs4_stateid_is_current(&args->stateid, | |
4547 | args->context, | |
4548 | args->lock_context, | |
4549 | FMODE_READ)) | |
4550 | return false; | |
4551 | rpc_restart_call_prepare(task); | |
4552 | return true; | |
4553 | } | |
4554 | ||
d45f60c6 | 4555 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
cbdabc7f AA |
4556 | { |
4557 | ||
4558 | dprintk("--> %s\n", __func__); | |
4559 | ||
d45f60c6 | 4560 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 4561 | return -EAGAIN; |
d45f60c6 | 4562 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 4563 | return -EAGAIN; |
d45f60c6 WAA |
4564 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4565 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
4566 | } |
4567 | ||
d45f60c6 WAA |
4568 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
4569 | struct rpc_message *msg) | |
1da177e4 | 4570 | { |
d45f60c6 | 4571 | hdr->timestamp = jiffies; |
ca857cc1 TM |
4572 | if (!hdr->pgio_done_cb) |
4573 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
bdc7f021 | 4574 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
d45f60c6 | 4575 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0); |
1da177e4 LT |
4576 | } |
4577 | ||
d45f60c6 WAA |
4578 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
4579 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 4580 | { |
d45f60c6 WAA |
4581 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), |
4582 | &hdr->args.seq_args, | |
4583 | &hdr->res.seq_res, | |
9b206149 | 4584 | task)) |
ef1820f9 | 4585 | return 0; |
d45f60c6 WAA |
4586 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
4587 | hdr->args.lock_context, | |
4588 | hdr->rw_ops->rw_mode) == -EIO) | |
ef1820f9 | 4589 | return -EIO; |
d45f60c6 | 4590 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
4591 | return -EIO; |
4592 | return 0; | |
1da177e4 LT |
4593 | } |
4594 | ||
d45f60c6 WAA |
4595 | static int nfs4_write_done_cb(struct rpc_task *task, |
4596 | struct nfs_pgio_header *hdr) | |
1da177e4 | 4597 | { |
d45f60c6 | 4598 | struct inode *inode = hdr->inode; |
8478eaa1 | 4599 | |
d45f60c6 WAA |
4600 | trace_nfs4_write(hdr, task->tk_status); |
4601 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), | |
8478eaa1 N |
4602 | hdr->args.context->state, |
4603 | NULL) == -EAGAIN) { | |
d00c5d43 | 4604 | rpc_restart_call_prepare(task); |
788e7a89 | 4605 | return -EAGAIN; |
1da177e4 | 4606 | } |
4f9838c7 | 4607 | if (task->tk_status >= 0) { |
d45f60c6 | 4608 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 4609 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 4610 | } |
788e7a89 | 4611 | return 0; |
1da177e4 LT |
4612 | } |
4613 | ||
5521abfd | 4614 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 4615 | struct nfs_pgio_args *args) |
5521abfd TM |
4616 | { |
4617 | ||
4618 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
4619 | nfs4_stateid_is_current(&args->stateid, | |
4620 | args->context, | |
4621 | args->lock_context, | |
4622 | FMODE_WRITE)) | |
4623 | return false; | |
4624 | rpc_restart_call_prepare(task); | |
4625 | return true; | |
4626 | } | |
4627 | ||
d45f60c6 | 4628 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 4629 | { |
d45f60c6 | 4630 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 4631 | return -EAGAIN; |
d45f60c6 | 4632 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 4633 | return -EAGAIN; |
d45f60c6 WAA |
4634 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
4635 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
4636 | } |
4637 | ||
5a37f851 | 4638 | static |
d45f60c6 | 4639 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 4640 | { |
5a37f851 | 4641 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 4642 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
4643 | return false; |
4644 | /* Otherwise, request attributes if and only if we don't hold | |
4645 | * a delegation | |
4646 | */ | |
011e2a7f | 4647 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 4648 | } |
a69aef14 | 4649 | |
d45f60c6 WAA |
4650 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
4651 | struct rpc_message *msg) | |
1da177e4 | 4652 | { |
d45f60c6 | 4653 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 4654 | |
d45f60c6 WAA |
4655 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
4656 | hdr->args.bitmask = NULL; | |
4657 | hdr->res.fattr = NULL; | |
7ffd1064 | 4658 | } else |
d45f60c6 | 4659 | hdr->args.bitmask = server->cache_consistency_bitmask; |
5a37f851 | 4660 | |
d45f60c6 WAA |
4661 | if (!hdr->pgio_done_cb) |
4662 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
4663 | hdr->res.server = server; | |
4664 | hdr->timestamp = jiffies; | |
1da177e4 | 4665 | |
bdc7f021 | 4666 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
d45f60c6 | 4667 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1); |
1da177e4 LT |
4668 | } |
4669 | ||
0b7c0153 | 4670 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 4671 | { |
d9afbd1b TM |
4672 | nfs4_setup_sequence(NFS_SERVER(data->inode), |
4673 | &data->args.seq_args, | |
4674 | &data->res.seq_res, | |
4675 | task); | |
1da177e4 LT |
4676 | } |
4677 | ||
0b7c0153 | 4678 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 4679 | { |
1da177e4 | 4680 | struct inode *inode = data->inode; |
14516c3a | 4681 | |
cc668ab3 | 4682 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
4683 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
4684 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 4685 | rpc_restart_call_prepare(task); |
788e7a89 | 4686 | return -EAGAIN; |
1da177e4 | 4687 | } |
788e7a89 | 4688 | return 0; |
1da177e4 LT |
4689 | } |
4690 | ||
0b7c0153 | 4691 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
4692 | { |
4693 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
4694 | return -EAGAIN; | |
0b7c0153 | 4695 | return data->commit_done_cb(task, data); |
5f452431 FI |
4696 | } |
4697 | ||
0b7c0153 | 4698 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 4699 | { |
788e7a89 | 4700 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 4701 | |
0b7c0153 FI |
4702 | if (data->commit_done_cb == NULL) |
4703 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 4704 | data->res.server = server; |
bdc7f021 | 4705 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
a9c92d6b | 4706 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
4707 | } |
4708 | ||
9bc4e3ca CL |
4709 | struct nfs4_renewdata { |
4710 | struct nfs_client *client; | |
4711 | unsigned long timestamp; | |
4712 | }; | |
4713 | ||
1da177e4 LT |
4714 | /* |
4715 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
4716 | * standalone procedure for queueing an asynchronous RENEW. | |
4717 | */ | |
9bc4e3ca | 4718 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 4719 | { |
9bc4e3ca CL |
4720 | struct nfs4_renewdata *data = calldata; |
4721 | struct nfs_client *clp = data->client; | |
dc96aef9 | 4722 | |
0851de06 AB |
4723 | if (atomic_read(&clp->cl_count) > 1) |
4724 | nfs4_schedule_state_renewal(clp); | |
4725 | nfs_put_client(clp); | |
9bc4e3ca | 4726 | kfree(data); |
dc96aef9 AB |
4727 | } |
4728 | ||
9bc4e3ca | 4729 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 4730 | { |
9bc4e3ca CL |
4731 | struct nfs4_renewdata *data = calldata; |
4732 | struct nfs_client *clp = data->client; | |
4733 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 4734 | |
c6d01c6f | 4735 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
4736 | switch (task->tk_status) { |
4737 | case 0: | |
4738 | break; | |
4739 | case -NFS4ERR_LEASE_MOVED: | |
4740 | nfs4_schedule_lease_moved_recovery(clp); | |
4741 | break; | |
4742 | default: | |
95baa25c | 4743 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
4744 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
4745 | return; | |
4746 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 4747 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
4748 | return; |
4749 | } | |
4750 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 4751 | } |
452e9352 | 4752 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
4753 | } |
4754 | ||
963d8fe5 TM |
4755 | static const struct rpc_call_ops nfs4_renew_ops = { |
4756 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 4757 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
4758 | }; |
4759 | ||
2f60ea6b | 4760 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
4761 | { |
4762 | struct rpc_message msg = { | |
4763 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4764 | .rpc_argp = clp, | |
b4454fe1 | 4765 | .rpc_cred = cred, |
1da177e4 | 4766 | }; |
9bc4e3ca | 4767 | struct nfs4_renewdata *data; |
1da177e4 | 4768 | |
2f60ea6b TM |
4769 | if (renew_flags == 0) |
4770 | return 0; | |
0851de06 AB |
4771 | if (!atomic_inc_not_zero(&clp->cl_count)) |
4772 | return -EIO; | |
b569ad34 | 4773 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
4774 | if (data == NULL) |
4775 | return -ENOMEM; | |
4776 | data->client = clp; | |
4777 | data->timestamp = jiffies; | |
bc7a05ca | 4778 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 4779 | &nfs4_renew_ops, data); |
1da177e4 LT |
4780 | } |
4781 | ||
8534d4ec | 4782 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
4783 | { |
4784 | struct rpc_message msg = { | |
4785 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
4786 | .rpc_argp = clp, | |
b4454fe1 | 4787 | .rpc_cred = cred, |
1da177e4 LT |
4788 | }; |
4789 | unsigned long now = jiffies; | |
4790 | int status; | |
4791 | ||
bc7a05ca | 4792 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4793 | if (status < 0) |
4794 | return status; | |
452e9352 | 4795 | do_renew_lease(clp, now); |
1da177e4 LT |
4796 | return 0; |
4797 | } | |
4798 | ||
aa1870af BF |
4799 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
4800 | { | |
7dd7d959 | 4801 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
4802 | } |
4803 | ||
21f498c2 TM |
4804 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
4805 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
4806 | * the stack. |
4807 | */ | |
21f498c2 | 4808 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 4809 | |
e9e3d724 | 4810 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 4811 | struct page **pages) |
e9e3d724 NH |
4812 | { |
4813 | struct page *newpage, **spages; | |
4814 | int rc = 0; | |
4815 | size_t len; | |
4816 | spages = pages; | |
4817 | ||
4818 | do { | |
21f498c2 | 4819 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
4820 | newpage = alloc_page(GFP_KERNEL); |
4821 | ||
4822 | if (newpage == NULL) | |
4823 | goto unwind; | |
4824 | memcpy(page_address(newpage), buf, len); | |
4825 | buf += len; | |
4826 | buflen -= len; | |
4827 | *pages++ = newpage; | |
4828 | rc++; | |
4829 | } while (buflen != 0); | |
4830 | ||
4831 | return rc; | |
4832 | ||
4833 | unwind: | |
4834 | for(; rc > 0; rc--) | |
4835 | __free_page(spages[rc-1]); | |
4836 | return -ENOMEM; | |
4837 | } | |
4838 | ||
e50a1c2e BF |
4839 | struct nfs4_cached_acl { |
4840 | int cached; | |
4841 | size_t len; | |
3e9d4154 | 4842 | char data[0]; |
e50a1c2e BF |
4843 | }; |
4844 | ||
4845 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
4846 | { | |
4847 | struct nfs_inode *nfsi = NFS_I(inode); | |
4848 | ||
4849 | spin_lock(&inode->i_lock); | |
4850 | kfree(nfsi->nfs4_acl); | |
4851 | nfsi->nfs4_acl = acl; | |
4852 | spin_unlock(&inode->i_lock); | |
4853 | } | |
4854 | ||
4855 | static void nfs4_zap_acl_attr(struct inode *inode) | |
4856 | { | |
4857 | nfs4_set_cached_acl(inode, NULL); | |
4858 | } | |
4859 | ||
4860 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
4861 | { | |
4862 | struct nfs_inode *nfsi = NFS_I(inode); | |
4863 | struct nfs4_cached_acl *acl; | |
4864 | int ret = -ENOENT; | |
4865 | ||
4866 | spin_lock(&inode->i_lock); | |
4867 | acl = nfsi->nfs4_acl; | |
4868 | if (acl == NULL) | |
4869 | goto out; | |
4870 | if (buf == NULL) /* user is just asking for length */ | |
4871 | goto out_len; | |
4872 | if (acl->cached == 0) | |
4873 | goto out; | |
4874 | ret = -ERANGE; /* see getxattr(2) man page */ | |
4875 | if (acl->len > buflen) | |
4876 | goto out; | |
4877 | memcpy(buf, acl->data, acl->len); | |
4878 | out_len: | |
4879 | ret = acl->len; | |
4880 | out: | |
4881 | spin_unlock(&inode->i_lock); | |
4882 | return ret; | |
4883 | } | |
4884 | ||
5794d21e | 4885 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
4886 | { |
4887 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 4888 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 4889 | |
1f1ea6c2 | 4890 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 4891 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
4892 | if (acl == NULL) |
4893 | goto out; | |
4894 | acl->cached = 1; | |
5794d21e | 4895 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
4896 | } else { |
4897 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
4898 | if (acl == NULL) | |
4899 | goto out; | |
4900 | acl->cached = 0; | |
4901 | } | |
4902 | acl->len = acl_len; | |
4903 | out: | |
4904 | nfs4_set_cached_acl(inode, acl); | |
4905 | } | |
4906 | ||
bf118a34 AA |
4907 | /* |
4908 | * The getxattr API returns the required buffer length when called with a | |
4909 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
4910 | * the required buf. On a NULL buf, we send a page of data to the server | |
4911 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
4912 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
4913 | * the cache. If not so, we throw away the page, and cache the required | |
4914 | * length. The next getxattr call will then produce another round trip to | |
4915 | * the server, this time with the input buf of the required size. | |
4916 | */ | |
16b4289c | 4917 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4918 | { |
bf118a34 | 4919 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4920 | struct nfs_getaclargs args = { |
4921 | .fh = NFS_FH(inode), | |
4922 | .acl_pages = pages, | |
4923 | .acl_len = buflen, | |
4924 | }; | |
663c79b3 BH |
4925 | struct nfs_getaclres res = { |
4926 | .acl_len = buflen, | |
4927 | }; | |
aa1870af BF |
4928 | struct rpc_message msg = { |
4929 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4930 | .rpc_argp = &args, | |
663c79b3 | 4931 | .rpc_resp = &res, |
aa1870af | 4932 | }; |
21f498c2 TM |
4933 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4934 | int ret = -ENOMEM, i; | |
aa1870af | 4935 | |
bf118a34 AA |
4936 | /* As long as we're doing a round trip to the server anyway, |
4937 | * let's be prepared for a page of acl data. */ | |
4938 | if (npages == 0) | |
4939 | npages = 1; | |
21f498c2 TM |
4940 | if (npages > ARRAY_SIZE(pages)) |
4941 | return -ERANGE; | |
5a006899 | 4942 | |
bf118a34 AA |
4943 | for (i = 0; i < npages; i++) { |
4944 | pages[i] = alloc_page(GFP_KERNEL); | |
4945 | if (!pages[i]) | |
4946 | goto out_free; | |
e50a1c2e | 4947 | } |
5a006899 SP |
4948 | |
4949 | /* for decoding across pages */ | |
4950 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4951 | if (!res.acl_scratch) | |
4952 | goto out_free; | |
4953 | ||
bf118a34 | 4954 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 4955 | |
de040bec | 4956 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4957 | __func__, buf, buflen, npages, args.acl_len); |
4958 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4959 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4960 | if (ret) |
4961 | goto out_free; | |
bf118a34 | 4962 | |
1f1ea6c2 TM |
4963 | /* Handle the case where the passed-in buffer is too short */ |
4964 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4965 | /* Did the user only issue a request for the acl length? */ | |
4966 | if (buf == NULL) | |
4967 | goto out_ok; | |
e50a1c2e | 4968 | ret = -ERANGE; |
1f1ea6c2 | 4969 | goto out_free; |
e50a1c2e | 4970 | } |
1f1ea6c2 | 4971 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
4972 | if (buf) { |
4973 | if (res.acl_len > buflen) { | |
4974 | ret = -ERANGE; | |
4975 | goto out_free; | |
4976 | } | |
1f1ea6c2 | 4977 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 4978 | } |
1f1ea6c2 TM |
4979 | out_ok: |
4980 | ret = res.acl_len; | |
e50a1c2e | 4981 | out_free: |
bf118a34 AA |
4982 | for (i = 0; i < npages; i++) |
4983 | if (pages[i]) | |
4984 | __free_page(pages[i]); | |
331818f1 TM |
4985 | if (res.acl_scratch) |
4986 | __free_page(res.acl_scratch); | |
aa1870af BF |
4987 | return ret; |
4988 | } | |
4989 | ||
16b4289c TM |
4990 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4991 | { | |
4992 | struct nfs4_exception exception = { }; | |
4993 | ssize_t ret; | |
4994 | do { | |
4995 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 4996 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
4997 | if (ret >= 0) |
4998 | break; | |
4999 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
5000 | } while (exception.retry); | |
5001 | return ret; | |
5002 | } | |
5003 | ||
e50a1c2e BF |
5004 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
5005 | { | |
5006 | struct nfs_server *server = NFS_SERVER(inode); | |
5007 | int ret; | |
5008 | ||
5009 | if (!nfs4_server_supports_acls(server)) | |
5010 | return -EOPNOTSUPP; | |
5011 | ret = nfs_revalidate_inode(server, inode); | |
5012 | if (ret < 0) | |
5013 | return ret; | |
08a22b39 AK |
5014 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
5015 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
5016 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
5017 | if (ret != -ENOENT) | |
bf118a34 AA |
5018 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
5019 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
5020 | return ret; |
5021 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
5022 | } | |
5023 | ||
16b4289c | 5024 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
5025 | { |
5026 | struct nfs_server *server = NFS_SERVER(inode); | |
5027 | struct page *pages[NFS4ACL_MAXPAGES]; | |
5028 | struct nfs_setaclargs arg = { | |
5029 | .fh = NFS_FH(inode), | |
5030 | .acl_pages = pages, | |
5031 | .acl_len = buflen, | |
5032 | }; | |
73c403a9 | 5033 | struct nfs_setaclres res; |
4b580ee3 BF |
5034 | struct rpc_message msg = { |
5035 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
5036 | .rpc_argp = &arg, | |
73c403a9 | 5037 | .rpc_resp = &res, |
4b580ee3 | 5038 | }; |
21f498c2 | 5039 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 5040 | int ret, i; |
4b580ee3 BF |
5041 | |
5042 | if (!nfs4_server_supports_acls(server)) | |
5043 | return -EOPNOTSUPP; | |
21f498c2 TM |
5044 | if (npages > ARRAY_SIZE(pages)) |
5045 | return -ERANGE; | |
8fbcf237 | 5046 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
5047 | if (i < 0) |
5048 | return i; | |
57ec14c5 | 5049 | nfs4_inode_return_delegation(inode); |
7c513058 | 5050 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
5051 | |
5052 | /* | |
5053 | * Free each page after tx, so the only ref left is | |
5054 | * held by the network stack | |
5055 | */ | |
5056 | for (; i > 0; i--) | |
5057 | put_page(pages[i-1]); | |
5058 | ||
08a22b39 AK |
5059 | /* |
5060 | * Acl update can result in inode attribute update. | |
5061 | * so mark the attribute cache invalid. | |
5062 | */ | |
5063 | spin_lock(&inode->i_lock); | |
5064 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
5065 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
5066 | nfs_access_zap_cache(inode); |
5067 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
5068 | return ret; |
5069 | } | |
5070 | ||
16b4289c TM |
5071 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
5072 | { | |
5073 | struct nfs4_exception exception = { }; | |
5074 | int err; | |
5075 | do { | |
c1578b76 TM |
5076 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
5077 | trace_nfs4_set_acl(inode, err); | |
5078 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
16b4289c TM |
5079 | &exception); |
5080 | } while (exception.retry); | |
5081 | return err; | |
5082 | } | |
5083 | ||
aa9c2669 DQ |
5084 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5085 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
5086 | size_t buflen) | |
5087 | { | |
5088 | struct nfs_server *server = NFS_SERVER(inode); | |
5089 | struct nfs_fattr fattr; | |
5090 | struct nfs4_label label = {0, 0, buflen, buf}; | |
5091 | ||
5092 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 5093 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
5094 | .fh = NFS_FH(inode), |
5095 | .bitmask = bitmask, | |
5096 | }; | |
5097 | struct nfs4_getattr_res res = { | |
5098 | .fattr = &fattr, | |
5099 | .label = &label, | |
5100 | .server = server, | |
5101 | }; | |
5102 | struct rpc_message msg = { | |
5103 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 5104 | .rpc_argp = &arg, |
aa9c2669 DQ |
5105 | .rpc_resp = &res, |
5106 | }; | |
5107 | int ret; | |
5108 | ||
5109 | nfs_fattr_init(&fattr); | |
5110 | ||
fcb63a9b | 5111 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
5112 | if (ret) |
5113 | return ret; | |
5114 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
5115 | return -ENOENT; | |
5116 | if (buflen < label.len) | |
5117 | return -ERANGE; | |
5118 | return 0; | |
5119 | } | |
5120 | ||
5121 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
5122 | size_t buflen) | |
5123 | { | |
5124 | struct nfs4_exception exception = { }; | |
5125 | int err; | |
5126 | ||
5127 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
5128 | return -EOPNOTSUPP; | |
5129 | ||
5130 | do { | |
c1578b76 TM |
5131 | err = _nfs4_get_security_label(inode, buf, buflen); |
5132 | trace_nfs4_get_security_label(inode, err); | |
5133 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
5134 | &exception); |
5135 | } while (exception.retry); | |
5136 | return err; | |
5137 | } | |
5138 | ||
5139 | static int _nfs4_do_set_security_label(struct inode *inode, | |
5140 | struct nfs4_label *ilabel, | |
5141 | struct nfs_fattr *fattr, | |
5142 | struct nfs4_label *olabel) | |
5143 | { | |
5144 | ||
5145 | struct iattr sattr = {0}; | |
5146 | struct nfs_server *server = NFS_SERVER(inode); | |
5147 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 5148 | struct nfs_setattrargs arg = { |
aa9c2669 DQ |
5149 | .fh = NFS_FH(inode), |
5150 | .iap = &sattr, | |
5151 | .server = server, | |
5152 | .bitmask = bitmask, | |
5153 | .label = ilabel, | |
5154 | }; | |
5155 | struct nfs_setattrres res = { | |
5156 | .fattr = fattr, | |
5157 | .label = olabel, | |
5158 | .server = server, | |
5159 | }; | |
5160 | struct rpc_message msg = { | |
5161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
12207f69 | 5162 | .rpc_argp = &arg, |
aa9c2669 DQ |
5163 | .rpc_resp = &res, |
5164 | }; | |
5165 | int status; | |
5166 | ||
12207f69 | 5167 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 5168 | |
12207f69 | 5169 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
5170 | if (status) |
5171 | dprintk("%s failed: %d\n", __func__, status); | |
5172 | ||
5173 | return status; | |
5174 | } | |
5175 | ||
5176 | static int nfs4_do_set_security_label(struct inode *inode, | |
5177 | struct nfs4_label *ilabel, | |
5178 | struct nfs_fattr *fattr, | |
5179 | struct nfs4_label *olabel) | |
5180 | { | |
5181 | struct nfs4_exception exception = { }; | |
5182 | int err; | |
5183 | ||
5184 | do { | |
c1578b76 TM |
5185 | err = _nfs4_do_set_security_label(inode, ilabel, |
5186 | fattr, olabel); | |
5187 | trace_nfs4_set_security_label(inode, err); | |
5188 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
5189 | &exception); |
5190 | } while (exception.retry); | |
5191 | return err; | |
5192 | } | |
5193 | ||
5194 | static int | |
59301226 | 5195 | nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen) |
aa9c2669 DQ |
5196 | { |
5197 | struct nfs4_label ilabel, *olabel = NULL; | |
5198 | struct nfs_fattr fattr; | |
5199 | struct rpc_cred *cred; | |
aa9c2669 DQ |
5200 | int status; |
5201 | ||
5202 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
5203 | return -EOPNOTSUPP; | |
5204 | ||
5205 | nfs_fattr_init(&fattr); | |
5206 | ||
5207 | ilabel.pi = 0; | |
5208 | ilabel.lfs = 0; | |
5209 | ilabel.label = (char *)buf; | |
5210 | ilabel.len = buflen; | |
5211 | ||
5212 | cred = rpc_lookup_cred(); | |
5213 | if (IS_ERR(cred)) | |
5214 | return PTR_ERR(cred); | |
5215 | ||
5216 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); | |
5217 | if (IS_ERR(olabel)) { | |
5218 | status = -PTR_ERR(olabel); | |
5219 | goto out; | |
5220 | } | |
5221 | ||
5222 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
5223 | if (status == 0) | |
5224 | nfs_setsecurity(inode, &fattr, olabel); | |
5225 | ||
5226 | nfs4_label_free(olabel); | |
5227 | out: | |
5228 | put_rpccred(cred); | |
5229 | return status; | |
5230 | } | |
5231 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
5232 | ||
5233 | ||
f092075d CL |
5234 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
5235 | nfs4_verifier *bootverf) | |
cd93710e CL |
5236 | { |
5237 | __be32 verf[2]; | |
5238 | ||
2c820d9a CL |
5239 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
5240 | /* An impossible timestamp guarantees this value | |
5241 | * will never match a generated boot time. */ | |
5242 | verf[0] = 0; | |
17f26b12 | 5243 | verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); |
2c820d9a | 5244 | } else { |
f092075d | 5245 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
17f26b12 TM |
5246 | verf[0] = cpu_to_be32(nn->boot_time.tv_sec); |
5247 | verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); | |
2c820d9a | 5248 | } |
cd93710e CL |
5249 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
5250 | } | |
5251 | ||
a3192688 JL |
5252 | static int |
5253 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 5254 | { |
a3192688 JL |
5255 | size_t len; |
5256 | char *str; | |
e984a55a | 5257 | |
ceb3a16c | 5258 | if (clp->cl_owner_id != NULL) |
a3192688 | 5259 | return 0; |
4a3e5779 | 5260 | |
a3192688 | 5261 | rcu_read_lock(); |
4a70316c | 5262 | len = 14 + strlen(clp->cl_ipaddr) + 1 + |
a3192688 JL |
5263 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
5264 | 1 + | |
5265 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)) + | |
5266 | 1; | |
5267 | rcu_read_unlock(); | |
5268 | ||
5269 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5270 | return -EINVAL; | |
5271 | ||
5272 | /* | |
5273 | * Since this string is allocated at mount time, and held until the | |
5274 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5275 | * about a memory-reclaim deadlock. | |
5276 | */ | |
5277 | str = kmalloc(len, GFP_KERNEL); | |
5278 | if (!str) | |
5279 | return -ENOMEM; | |
ceb3a16c | 5280 | |
e984a55a | 5281 | rcu_read_lock(); |
f2dd436e | 5282 | scnprintf(str, len, "Linux NFSv4.0 %s/%s %s", |
a3192688 JL |
5283 | clp->cl_ipaddr, |
5284 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR), | |
5285 | rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); | |
e984a55a | 5286 | rcu_read_unlock(); |
a3192688 | 5287 | |
a3192688 JL |
5288 | clp->cl_owner_id = str; |
5289 | return 0; | |
e984a55a CL |
5290 | } |
5291 | ||
873e3851 JL |
5292 | static int |
5293 | nfs4_init_uniquifier_client_string(struct nfs_client *clp) | |
5294 | { | |
873e3851 JL |
5295 | size_t len; |
5296 | char *str; | |
5297 | ||
5298 | len = 10 + 10 + 1 + 10 + 1 + | |
5299 | strlen(nfs4_client_id_uniquifier) + 1 + | |
5300 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5301 | ||
5302 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5303 | return -EINVAL; | |
5304 | ||
5305 | /* | |
5306 | * Since this string is allocated at mount time, and held until the | |
5307 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5308 | * about a memory-reclaim deadlock. | |
5309 | */ | |
5310 | str = kmalloc(len, GFP_KERNEL); | |
5311 | if (!str) | |
5312 | return -ENOMEM; | |
5313 | ||
f2dd436e | 5314 | scnprintf(str, len, "Linux NFSv%u.%u %s/%s", |
873e3851 JL |
5315 | clp->rpc_ops->version, clp->cl_minorversion, |
5316 | nfs4_client_id_uniquifier, | |
5317 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5318 | clp->cl_owner_id = str; |
5319 | return 0; | |
5320 | } | |
5321 | ||
5322 | static int | |
5323 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 5324 | { |
873e3851 JL |
5325 | size_t len; |
5326 | char *str; | |
ceb3a16c TM |
5327 | |
5328 | if (clp->cl_owner_id != NULL) | |
873e3851 | 5329 | return 0; |
6f2ea7f2 CL |
5330 | |
5331 | if (nfs4_client_id_uniquifier[0] != '\0') | |
873e3851 JL |
5332 | return nfs4_init_uniquifier_client_string(clp); |
5333 | ||
5334 | len = 10 + 10 + 1 + 10 + 1 + | |
5335 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
5336 | ||
5337 | if (len > NFS4_OPAQUE_LIMIT + 1) | |
5338 | return -EINVAL; | |
5339 | ||
5340 | /* | |
5341 | * Since this string is allocated at mount time, and held until the | |
5342 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
5343 | * about a memory-reclaim deadlock. | |
5344 | */ | |
5345 | str = kmalloc(len, GFP_KERNEL); | |
5346 | if (!str) | |
5347 | return -ENOMEM; | |
5348 | ||
f2dd436e | 5349 | scnprintf(str, len, "Linux NFSv%u.%u %s", |
873e3851 JL |
5350 | clp->rpc_ops->version, clp->cl_minorversion, |
5351 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
5352 | clp->cl_owner_id = str; |
5353 | return 0; | |
e984a55a CL |
5354 | } |
5355 | ||
706cb8db CL |
5356 | /* |
5357 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
5358 | * services. Advertise one based on the address family of the | |
5359 | * clientaddr. | |
5360 | */ | |
5361 | static unsigned int | |
5362 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
5363 | { | |
5364 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
5365 | return scnprintf(buf, len, "tcp6"); | |
5366 | else | |
5367 | return scnprintf(buf, len, "tcp"); | |
5368 | } | |
5369 | ||
f11b2a1c JL |
5370 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
5371 | { | |
5372 | struct nfs4_setclientid *sc = calldata; | |
5373 | ||
5374 | if (task->tk_status == 0) | |
5375 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
5376 | } | |
5377 | ||
5378 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
5379 | .rpc_call_done = nfs4_setclientid_done, | |
5380 | }; | |
5381 | ||
6bbb4ae8 CL |
5382 | /** |
5383 | * nfs4_proc_setclientid - Negotiate client ID | |
5384 | * @clp: state data structure | |
5385 | * @program: RPC program for NFSv4 callback service | |
5386 | * @port: IP port number for NFS4 callback service | |
5387 | * @cred: RPC credential to use for this call | |
5388 | * @res: where to place the result | |
5389 | * | |
5390 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5391 | */ | |
bb8b27e5 TM |
5392 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
5393 | unsigned short port, struct rpc_cred *cred, | |
5394 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
5395 | { |
5396 | nfs4_verifier sc_verifier; | |
5397 | struct nfs4_setclientid setclientid = { | |
5398 | .sc_verifier = &sc_verifier, | |
5399 | .sc_prog = program, | |
3a6bb738 | 5400 | .sc_clnt = clp, |
1da177e4 LT |
5401 | }; |
5402 | struct rpc_message msg = { | |
5403 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
5404 | .rpc_argp = &setclientid, | |
bb8b27e5 | 5405 | .rpc_resp = res, |
286d7d6a | 5406 | .rpc_cred = cred, |
1da177e4 | 5407 | }; |
f11b2a1c JL |
5408 | struct rpc_task *task; |
5409 | struct rpc_task_setup task_setup_data = { | |
5410 | .rpc_client = clp->cl_rpcclient, | |
5411 | .rpc_message = &msg, | |
5412 | .callback_ops = &nfs4_setclientid_ops, | |
5413 | .callback_data = &setclientid, | |
5414 | .flags = RPC_TASK_TIMEOUT, | |
5415 | }; | |
6bbb4ae8 | 5416 | int status; |
1da177e4 | 5417 | |
de734831 | 5418 | /* nfs_client_id4 */ |
f092075d | 5419 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
5420 | |
5421 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
5422 | status = nfs4_init_uniform_client_string(clp); | |
5423 | else | |
a3192688 | 5424 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
5425 | |
5426 | if (status) | |
5427 | goto out; | |
3a6bb738 | 5428 | |
de734831 | 5429 | /* cb_client4 */ |
706cb8db CL |
5430 | setclientid.sc_netid_len = |
5431 | nfs4_init_callback_netid(clp, | |
5432 | setclientid.sc_netid, | |
5433 | sizeof(setclientid.sc_netid)); | |
de734831 | 5434 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 5435 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
5436 | clp->cl_ipaddr, port >> 8, port & 255); |
5437 | ||
3a6bb738 | 5438 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 5439 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 5440 | clp->cl_owner_id); |
f11b2a1c JL |
5441 | task = rpc_run_task(&task_setup_data); |
5442 | if (IS_ERR(task)) { | |
5443 | status = PTR_ERR(task); | |
5444 | goto out; | |
5445 | } | |
5446 | status = task->tk_status; | |
5447 | if (setclientid.sc_cred) { | |
5448 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); | |
5449 | put_rpccred(setclientid.sc_cred); | |
5450 | } | |
5451 | rpc_put_task(task); | |
5452 | out: | |
c6d01c6f | 5453 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
5454 | dprintk("NFS reply setclientid: %d\n", status); |
5455 | return status; | |
1da177e4 LT |
5456 | } |
5457 | ||
6bbb4ae8 CL |
5458 | /** |
5459 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
5460 | * @clp: state data structure | |
5461 | * @res: result of a previous SETCLIENTID | |
5462 | * @cred: RPC credential to use for this call | |
5463 | * | |
5464 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
5465 | */ | |
fd954ae1 | 5466 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
5467 | struct nfs4_setclientid_res *arg, |
5468 | struct rpc_cred *cred) | |
1da177e4 | 5469 | { |
1da177e4 LT |
5470 | struct rpc_message msg = { |
5471 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 5472 | .rpc_argp = arg, |
286d7d6a | 5473 | .rpc_cred = cred, |
1da177e4 | 5474 | }; |
1da177e4 LT |
5475 | int status; |
5476 | ||
6bbb4ae8 CL |
5477 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
5478 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5479 | clp->cl_clientid); | |
1bd714f2 | 5480 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 5481 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 5482 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
5483 | return status; |
5484 | } | |
5485 | ||
fe650407 TM |
5486 | struct nfs4_delegreturndata { |
5487 | struct nfs4_delegreturnargs args; | |
fa178f29 | 5488 | struct nfs4_delegreturnres res; |
fe650407 TM |
5489 | struct nfs_fh fh; |
5490 | nfs4_stateid stateid; | |
26e976a8 | 5491 | unsigned long timestamp; |
fa178f29 | 5492 | struct nfs_fattr fattr; |
fe650407 | 5493 | int rpc_status; |
039b756a PT |
5494 | struct inode *inode; |
5495 | bool roc; | |
5496 | u32 roc_barrier; | |
fe650407 TM |
5497 | }; |
5498 | ||
fe650407 TM |
5499 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
5500 | { | |
5501 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 5502 | |
14516c3a TM |
5503 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
5504 | return; | |
938e1010 | 5505 | |
ca8acf8d | 5506 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
79708861 | 5507 | switch (task->tk_status) { |
79708861 | 5508 | case 0: |
fa178f29 | 5509 | renew_lease(data->res.server, data->timestamp); |
c97cf606 TM |
5510 | case -NFS4ERR_ADMIN_REVOKED: |
5511 | case -NFS4ERR_DELEG_REVOKED: | |
26d36301 TM |
5512 | case -NFS4ERR_EXPIRED: |
5513 | nfs4_free_revoked_stateid(data->res.server, | |
5514 | data->args.stateid, | |
5515 | task->tk_msg.rpc_cred); | |
c97cf606 TM |
5516 | case -NFS4ERR_BAD_STATEID: |
5517 | case -NFS4ERR_OLD_STATEID: | |
5518 | case -NFS4ERR_STALE_STATEID: | |
c97cf606 | 5519 | task->tk_status = 0; |
039b756a PT |
5520 | if (data->roc) |
5521 | pnfs_roc_set_barrier(data->inode, data->roc_barrier); | |
c97cf606 | 5522 | break; |
79708861 | 5523 | default: |
8478eaa1 N |
5524 | if (nfs4_async_handle_error(task, data->res.server, |
5525 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5526 | rpc_restart_call_prepare(task); |
79708861 RL |
5527 | return; |
5528 | } | |
5529 | } | |
5530 | data->rpc_status = task->tk_status; | |
fe650407 TM |
5531 | } |
5532 | ||
5533 | static void nfs4_delegreturn_release(void *calldata) | |
5534 | { | |
039b756a | 5535 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 5536 | struct inode *inode = data->inode; |
039b756a | 5537 | |
ea7c38fe TM |
5538 | if (inode) { |
5539 | if (data->roc) | |
5540 | pnfs_roc_release(inode); | |
5541 | nfs_iput_and_deactive(inode); | |
5542 | } | |
fe650407 TM |
5543 | kfree(calldata); |
5544 | } | |
5545 | ||
938e1010 AA |
5546 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
5547 | { | |
5548 | struct nfs4_delegreturndata *d_data; | |
5549 | ||
5550 | d_data = (struct nfs4_delegreturndata *)data; | |
5551 | ||
500d701f PT |
5552 | if (nfs4_wait_on_layoutreturn(d_data->inode, task)) |
5553 | return; | |
5554 | ||
4ff376fe TM |
5555 | if (d_data->roc) |
5556 | pnfs_roc_get_barrier(d_data->inode, &d_data->roc_barrier); | |
039b756a | 5557 | |
d9afbd1b TM |
5558 | nfs4_setup_sequence(d_data->res.server, |
5559 | &d_data->args.seq_args, | |
5560 | &d_data->res.seq_res, | |
5561 | task); | |
938e1010 | 5562 | } |
938e1010 | 5563 | |
c8d149f3 | 5564 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 5565 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
5566 | .rpc_call_done = nfs4_delegreturn_done, |
5567 | .rpc_release = nfs4_delegreturn_release, | |
5568 | }; | |
5569 | ||
e6f81075 | 5570 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
5571 | { |
5572 | struct nfs4_delegreturndata *data; | |
fa178f29 | 5573 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 5574 | struct rpc_task *task; |
5138fde0 TM |
5575 | struct rpc_message msg = { |
5576 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
5577 | .rpc_cred = cred, | |
5578 | }; | |
c970aa85 TM |
5579 | struct rpc_task_setup task_setup_data = { |
5580 | .rpc_client = server->client, | |
5138fde0 | 5581 | .rpc_message = &msg, |
c970aa85 TM |
5582 | .callback_ops = &nfs4_delegreturn_ops, |
5583 | .flags = RPC_TASK_ASYNC, | |
5584 | }; | |
e6f81075 | 5585 | int status = 0; |
fe650407 | 5586 | |
8535b2be | 5587 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
5588 | if (data == NULL) |
5589 | return -ENOMEM; | |
a9c92d6b | 5590 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
99ade3c7 AE |
5591 | |
5592 | nfs4_state_protect(server->nfs_client, | |
5593 | NFS_SP4_MACH_CRED_CLEANUP, | |
5594 | &task_setup_data.rpc_client, &msg); | |
5595 | ||
fe650407 TM |
5596 | data->args.fhandle = &data->fh; |
5597 | data->args.stateid = &data->stateid; | |
9e907fec | 5598 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 5599 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 5600 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
5601 | data->res.fattr = &data->fattr; |
5602 | data->res.server = server; | |
5138fde0 | 5603 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 5604 | data->timestamp = jiffies; |
fe650407 | 5605 | data->rpc_status = 0; |
ea7c38fe TM |
5606 | data->inode = nfs_igrab_and_active(inode); |
5607 | if (data->inode) | |
5608 | data->roc = nfs4_roc(inode); | |
fe650407 | 5609 | |
c970aa85 | 5610 | task_setup_data.callback_data = data; |
1174dd1f TM |
5611 | msg.rpc_argp = &data->args; |
5612 | msg.rpc_resp = &data->res; | |
c970aa85 | 5613 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 5614 | if (IS_ERR(task)) |
fe650407 | 5615 | return PTR_ERR(task); |
e6f81075 TM |
5616 | if (!issync) |
5617 | goto out; | |
fe650407 | 5618 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
5619 | if (status != 0) |
5620 | goto out; | |
5621 | status = data->rpc_status; | |
e144cbcc TM |
5622 | if (status == 0) |
5623 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
5624 | else | |
5625 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 5626 | out: |
e6b3c4db | 5627 | rpc_put_task(task); |
fe650407 | 5628 | return status; |
1da177e4 LT |
5629 | } |
5630 | ||
e6f81075 | 5631 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
5632 | { |
5633 | struct nfs_server *server = NFS_SERVER(inode); | |
5634 | struct nfs4_exception exception = { }; | |
5635 | int err; | |
5636 | do { | |
e6f81075 | 5637 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
48c9579a | 5638 | trace_nfs4_delegreturn(inode, stateid, err); |
1da177e4 LT |
5639 | switch (err) { |
5640 | case -NFS4ERR_STALE_STATEID: | |
5641 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
5642 | case 0: |
5643 | return 0; | |
5644 | } | |
5645 | err = nfs4_handle_exception(server, err, &exception); | |
5646 | } while (exception.retry); | |
5647 | return err; | |
5648 | } | |
5649 | ||
1da177e4 LT |
5650 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5651 | { | |
5652 | struct inode *inode = state->inode; | |
5653 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 5654 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 5655 | struct nfs_lockt_args arg = { |
1da177e4 | 5656 | .fh = NFS_FH(inode), |
911d1aaf | 5657 | .fl = request, |
1da177e4 | 5658 | }; |
911d1aaf TM |
5659 | struct nfs_lockt_res res = { |
5660 | .denied = request, | |
1da177e4 LT |
5661 | }; |
5662 | struct rpc_message msg = { | |
5663 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
5664 | .rpc_argp = &arg, | |
5665 | .rpc_resp = &res, | |
5666 | .rpc_cred = state->owner->so_cred, | |
5667 | }; | |
1da177e4 LT |
5668 | struct nfs4_lock_state *lsp; |
5669 | int status; | |
5670 | ||
911d1aaf | 5671 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
5672 | status = nfs4_set_lock_state(state, request); |
5673 | if (status != 0) | |
5674 | goto out; | |
5675 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 5676 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5677 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 5678 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
5679 | switch (status) { |
5680 | case 0: | |
5681 | request->fl_type = F_UNLCK; | |
5682 | break; | |
5683 | case -NFS4ERR_DENIED: | |
5684 | status = 0; | |
1da177e4 | 5685 | } |
70cc6487 | 5686 | request->fl_ops->fl_release_private(request); |
a6f951dd | 5687 | request->fl_ops = NULL; |
8d0a8a9d | 5688 | out: |
1da177e4 LT |
5689 | return status; |
5690 | } | |
5691 | ||
5692 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5693 | { | |
5694 | struct nfs4_exception exception = { }; | |
5695 | int err; | |
5696 | ||
5697 | do { | |
d1b748a5 TM |
5698 | err = _nfs4_proc_getlk(state, cmd, request); |
5699 | trace_nfs4_get_lock(request, state, cmd, err); | |
5700 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
5701 | &exception); |
5702 | } while (exception.retry); | |
5703 | return err; | |
5704 | } | |
5705 | ||
faf5f49c | 5706 | struct nfs4_unlockdata { |
911d1aaf TM |
5707 | struct nfs_locku_args arg; |
5708 | struct nfs_locku_res res; | |
faf5f49c TM |
5709 | struct nfs4_lock_state *lsp; |
5710 | struct nfs_open_context *ctx; | |
911d1aaf | 5711 | struct file_lock fl; |
516285eb | 5712 | struct nfs_server *server; |
26e976a8 | 5713 | unsigned long timestamp; |
faf5f49c TM |
5714 | }; |
5715 | ||
911d1aaf TM |
5716 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
5717 | struct nfs_open_context *ctx, | |
5718 | struct nfs4_lock_state *lsp, | |
5719 | struct nfs_seqid *seqid) | |
5720 | { | |
5721 | struct nfs4_unlockdata *p; | |
5722 | struct inode *inode = lsp->ls_state->inode; | |
5723 | ||
8535b2be | 5724 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
5725 | if (p == NULL) |
5726 | return NULL; | |
5727 | p->arg.fh = NFS_FH(inode); | |
5728 | p->arg.fl = &p->fl; | |
5729 | p->arg.seqid = seqid; | |
c1d51931 | 5730 | p->res.seqid = seqid; |
911d1aaf TM |
5731 | p->lsp = lsp; |
5732 | atomic_inc(&lsp->ls_count); | |
5733 | /* Ensure we don't close file until we're done freeing locks! */ | |
5734 | p->ctx = get_nfs_open_context(ctx); | |
5735 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
5736 | p->server = NFS_SERVER(inode); | |
5737 | return p; | |
5738 | } | |
5739 | ||
06f814a3 | 5740 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 5741 | { |
963d8fe5 | 5742 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 5743 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
5744 | nfs4_put_lock_state(calldata->lsp); |
5745 | put_nfs_open_context(calldata->ctx); | |
5746 | kfree(calldata); | |
faf5f49c TM |
5747 | } |
5748 | ||
963d8fe5 | 5749 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 5750 | { |
963d8fe5 | 5751 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5752 | |
14516c3a TM |
5753 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
5754 | return; | |
faf5f49c TM |
5755 | switch (task->tk_status) { |
5756 | case 0: | |
26e976a8 | 5757 | renew_lease(calldata->server, calldata->timestamp); |
75575ddf | 5758 | locks_lock_inode_wait(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
5759 | if (nfs4_update_lock_stateid(calldata->lsp, |
5760 | &calldata->res.stateid)) | |
5761 | break; | |
26d36301 TM |
5762 | case -NFS4ERR_ADMIN_REVOKED: |
5763 | case -NFS4ERR_EXPIRED: | |
5764 | nfs4_free_revoked_stateid(calldata->server, | |
5765 | &calldata->arg.stateid, | |
5766 | task->tk_msg.rpc_cred); | |
9e33bed5 TM |
5767 | case -NFS4ERR_BAD_STATEID: |
5768 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c | 5769 | case -NFS4ERR_STALE_STATEID: |
425c1d4e TM |
5770 | if (!nfs4_stateid_match(&calldata->arg.stateid, |
5771 | &calldata->lsp->ls_stateid)) | |
5772 | rpc_restart_call_prepare(task); | |
faf5f49c TM |
5773 | break; |
5774 | default: | |
8478eaa1 N |
5775 | if (nfs4_async_handle_error(task, calldata->server, |
5776 | NULL, NULL) == -EAGAIN) | |
d00c5d43 | 5777 | rpc_restart_call_prepare(task); |
faf5f49c | 5778 | } |
2b1bc308 | 5779 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
5780 | } |
5781 | ||
4ce70ada | 5782 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 5783 | { |
4ce70ada | 5784 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 5785 | |
911d1aaf | 5786 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 5787 | goto out_wait; |
425c1d4e | 5788 | nfs4_stateid_copy(&calldata->arg.stateid, &calldata->lsp->ls_stateid); |
795a88c9 | 5789 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 5790 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 5791 | goto out_no_action; |
faf5f49c | 5792 | } |
26e976a8 | 5793 | calldata->timestamp = jiffies; |
035168ab | 5794 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 5795 | &calldata->arg.seq_args, |
2240a9e2 TM |
5796 | &calldata->res.seq_res, |
5797 | task) != 0) | |
5798 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
5799 | return; |
5800 | out_no_action: | |
5801 | task->tk_action = NULL; | |
5802 | out_wait: | |
5803 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
5804 | } |
5805 | ||
963d8fe5 | 5806 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 5807 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 5808 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 5809 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
5810 | }; |
5811 | ||
a5d16a4d TM |
5812 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
5813 | struct nfs_open_context *ctx, | |
5814 | struct nfs4_lock_state *lsp, | |
5815 | struct nfs_seqid *seqid) | |
5816 | { | |
5817 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
5818 | struct rpc_message msg = { |
5819 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
5820 | .rpc_cred = ctx->cred, | |
5821 | }; | |
c970aa85 TM |
5822 | struct rpc_task_setup task_setup_data = { |
5823 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 5824 | .rpc_message = &msg, |
c970aa85 | 5825 | .callback_ops = &nfs4_locku_ops, |
101070ca | 5826 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
5827 | .flags = RPC_TASK_ASYNC, |
5828 | }; | |
a5d16a4d | 5829 | |
fa940720 WAA |
5830 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
5831 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
5832 | ||
137d6aca FF |
5833 | /* Ensure this is an unlock - when canceling a lock, the |
5834 | * canceled lock is passed in, and it won't be an unlock. | |
5835 | */ | |
5836 | fl->fl_type = F_UNLCK; | |
5837 | ||
a5d16a4d TM |
5838 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
5839 | if (data == NULL) { | |
5840 | nfs_free_seqid(seqid); | |
5841 | return ERR_PTR(-ENOMEM); | |
5842 | } | |
5843 | ||
a9c92d6b | 5844 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
5845 | msg.rpc_argp = &data->arg; |
5846 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
5847 | task_setup_data.callback_data = data; |
5848 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
5849 | } |
5850 | ||
faf5f49c TM |
5851 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
5852 | { | |
65b62a29 TM |
5853 | struct inode *inode = state->inode; |
5854 | struct nfs4_state_owner *sp = state->owner; | |
5855 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 5856 | struct nfs_seqid *seqid; |
1da177e4 | 5857 | struct nfs4_lock_state *lsp; |
06f814a3 | 5858 | struct rpc_task *task; |
b4019c0e | 5859 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 5860 | int status = 0; |
536ff0f8 | 5861 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 5862 | |
8d0a8a9d | 5863 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
5864 | /* Unlock _before_ we do the RPC call */ |
5865 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
5866 | /* Exclude nfs_delegation_claim_locks() */ |
5867 | mutex_lock(&sp->so_delegreturn_mutex); | |
5868 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 5869 | down_read(&nfsi->rwsem); |
75575ddf | 5870 | if (locks_lock_inode_wait(inode, request) == -ENOENT) { |
19e03c57 | 5871 | up_read(&nfsi->rwsem); |
65b62a29 | 5872 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 5873 | goto out; |
19e03c57 TM |
5874 | } |
5875 | up_read(&nfsi->rwsem); | |
65b62a29 | 5876 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 5877 | if (status != 0) |
9b073574 TM |
5878 | goto out; |
5879 | /* Is this a delegated lock? */ | |
8d0a8a9d | 5880 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
5881 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
5882 | goto out; | |
b4019c0e TM |
5883 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
5884 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 5885 | status = -ENOMEM; |
badc76dd | 5886 | if (IS_ERR(seqid)) |
9b073574 | 5887 | goto out; |
cd3758e3 | 5888 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
5889 | status = PTR_ERR(task); |
5890 | if (IS_ERR(task)) | |
9b073574 | 5891 | goto out; |
a5d16a4d | 5892 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 5893 | rpc_put_task(task); |
9b073574 | 5894 | out: |
536ff0f8 | 5895 | request->fl_flags = fl_flags; |
d1b748a5 | 5896 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
5897 | return status; |
5898 | } | |
5899 | ||
a5d16a4d TM |
5900 | struct nfs4_lockdata { |
5901 | struct nfs_lock_args arg; | |
5902 | struct nfs_lock_res res; | |
5903 | struct nfs4_lock_state *lsp; | |
5904 | struct nfs_open_context *ctx; | |
5905 | struct file_lock fl; | |
26e976a8 | 5906 | unsigned long timestamp; |
a5d16a4d TM |
5907 | int rpc_status; |
5908 | int cancelled; | |
66179efe | 5909 | struct nfs_server *server; |
a5d16a4d TM |
5910 | }; |
5911 | ||
5912 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
5913 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
5914 | gfp_t gfp_mask) | |
1da177e4 | 5915 | { |
a5d16a4d TM |
5916 | struct nfs4_lockdata *p; |
5917 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 5918 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 5919 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 5920 | |
8535b2be | 5921 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
5922 | if (p == NULL) |
5923 | return NULL; | |
5924 | ||
5925 | p->arg.fh = NFS_FH(inode); | |
5926 | p->arg.fl = &p->fl; | |
8535b2be | 5927 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 5928 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 5929 | goto out_free; |
b4019c0e TM |
5930 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
5931 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 5932 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 5933 | goto out_free_seqid; |
7539bbab | 5934 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 5935 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 5936 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 5937 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 5938 | p->lsp = lsp; |
66179efe | 5939 | p->server = server; |
a5d16a4d TM |
5940 | atomic_inc(&lsp->ls_count); |
5941 | p->ctx = get_nfs_open_context(ctx); | |
feaff8e5 | 5942 | get_file(fl->fl_file); |
a5d16a4d TM |
5943 | memcpy(&p->fl, fl, sizeof(p->fl)); |
5944 | return p; | |
2f74c0a0 TM |
5945 | out_free_seqid: |
5946 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
5947 | out_free: |
5948 | kfree(p); | |
5949 | return NULL; | |
5950 | } | |
5951 | ||
5952 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
5953 | { | |
5954 | struct nfs4_lockdata *data = calldata; | |
5955 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 5956 | |
3110ff80 | 5957 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 5958 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 5959 | goto out_wait; |
a5d16a4d | 5960 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 5961 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 5962 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 5963 | goto out_release_lock_seqid; |
8fe72bac | 5964 | } |
425c1d4e TM |
5965 | nfs4_stateid_copy(&data->arg.open_stateid, |
5966 | &state->open_stateid); | |
a5d16a4d | 5967 | data->arg.new_lock_owner = 1; |
c1d51931 | 5968 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 5969 | } else { |
2f74c0a0 | 5970 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
5971 | nfs4_stateid_copy(&data->arg.lock_stateid, |
5972 | &data->lsp->ls_stateid); | |
5973 | } | |
5d422301 TM |
5974 | if (!nfs4_valid_open_stateid(state)) { |
5975 | data->rpc_status = -EBADF; | |
5976 | task->tk_action = NULL; | |
5977 | goto out_release_open_seqid; | |
5978 | } | |
26e976a8 | 5979 | data->timestamp = jiffies; |
035168ab TM |
5980 | if (nfs4_setup_sequence(data->server, |
5981 | &data->arg.seq_args, | |
2240a9e2 | 5982 | &data->res.seq_res, |
d9afbd1b | 5983 | task) == 0) |
66179efe | 5984 | return; |
5d422301 | 5985 | out_release_open_seqid: |
2240a9e2 TM |
5986 | nfs_release_seqid(data->arg.open_seqid); |
5987 | out_release_lock_seqid: | |
5988 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
5989 | out_wait: |
5990 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 5991 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
5992 | } |
5993 | ||
a5d16a4d TM |
5994 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
5995 | { | |
5996 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 5997 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 5998 | |
3110ff80 | 5999 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 6000 | |
14516c3a TM |
6001 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
6002 | return; | |
66179efe | 6003 | |
a5d16a4d | 6004 | data->rpc_status = task->tk_status; |
425c1d4e TM |
6005 | switch (task->tk_status) { |
6006 | case 0: | |
2b0143b5 | 6007 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 6008 | data->timestamp); |
c69899a1 TM |
6009 | if (data->arg.new_lock) { |
6010 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); | |
75575ddf | 6011 | if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) { |
c69899a1 TM |
6012 | rpc_restart_call_prepare(task); |
6013 | break; | |
6014 | } | |
6015 | } | |
39071e6f TM |
6016 | if (data->arg.new_lock_owner != 0) { |
6017 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
6018 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
6019 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
6020 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) | |
6021 | rpc_restart_call_prepare(task); | |
425c1d4e TM |
6022 | break; |
6023 | case -NFS4ERR_BAD_STATEID: | |
6024 | case -NFS4ERR_OLD_STATEID: | |
6025 | case -NFS4ERR_STALE_STATEID: | |
6026 | case -NFS4ERR_EXPIRED: | |
6027 | if (data->arg.new_lock_owner != 0) { | |
6028 | if (!nfs4_stateid_match(&data->arg.open_stateid, | |
6029 | &lsp->ls_state->open_stateid)) | |
6030 | rpc_restart_call_prepare(task); | |
6031 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
6032 | &lsp->ls_stateid)) | |
6033 | rpc_restart_call_prepare(task); | |
a5d16a4d | 6034 | } |
3110ff80 | 6035 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
6036 | } |
6037 | ||
6038 | static void nfs4_lock_release(void *calldata) | |
6039 | { | |
6040 | struct nfs4_lockdata *data = calldata; | |
6041 | ||
3110ff80 | 6042 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 6043 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
6044 | if (data->cancelled != 0) { |
6045 | struct rpc_task *task; | |
6046 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
6047 | data->arg.lock_seqid); | |
6048 | if (!IS_ERR(task)) | |
bf294b41 | 6049 | rpc_put_task_async(task); |
3110ff80 | 6050 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
6051 | } else |
6052 | nfs_free_seqid(data->arg.lock_seqid); | |
6053 | nfs4_put_lock_state(data->lsp); | |
6054 | put_nfs_open_context(data->ctx); | |
feaff8e5 | 6055 | fput(data->fl.fl_file); |
a5d16a4d | 6056 | kfree(data); |
3110ff80 | 6057 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
6058 | } |
6059 | ||
6060 | static const struct rpc_call_ops nfs4_lock_ops = { | |
6061 | .rpc_call_prepare = nfs4_lock_prepare, | |
6062 | .rpc_call_done = nfs4_lock_done, | |
6063 | .rpc_release = nfs4_lock_release, | |
6064 | }; | |
6065 | ||
2bee72a6 TM |
6066 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
6067 | { | |
2bee72a6 TM |
6068 | switch (error) { |
6069 | case -NFS4ERR_ADMIN_REVOKED: | |
d7f3e4bf | 6070 | case -NFS4ERR_EXPIRED: |
2bee72a6 | 6071 | case -NFS4ERR_BAD_STATEID: |
ecac799a | 6072 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 6073 | if (new_lock_owner != 0 || |
795a88c9 | 6074 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 6075 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
6076 | break; |
6077 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 6078 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a | 6079 | nfs4_schedule_lease_recovery(server->nfs_client); |
2bee72a6 TM |
6080 | }; |
6081 | } | |
6082 | ||
afe6c27c | 6083 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
6084 | { |
6085 | struct nfs4_lockdata *data; | |
6086 | struct rpc_task *task; | |
5138fde0 TM |
6087 | struct rpc_message msg = { |
6088 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
6089 | .rpc_cred = state->owner->so_cred, | |
6090 | }; | |
c970aa85 TM |
6091 | struct rpc_task_setup task_setup_data = { |
6092 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 6093 | .rpc_message = &msg, |
c970aa85 | 6094 | .callback_ops = &nfs4_lock_ops, |
101070ca | 6095 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
6096 | .flags = RPC_TASK_ASYNC, |
6097 | }; | |
a5d16a4d TM |
6098 | int ret; |
6099 | ||
3110ff80 | 6100 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 6101 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
6102 | fl->fl_u.nfs4_fl.owner, |
6103 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
6104 | if (data == NULL) |
6105 | return -ENOMEM; | |
6106 | if (IS_SETLKW(cmd)) | |
6107 | data->arg.block = 1; | |
a9c92d6b | 6108 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
6109 | msg.rpc_argp = &data->arg; |
6110 | msg.rpc_resp = &data->res; | |
c970aa85 | 6111 | task_setup_data.callback_data = data; |
8fe72bac TM |
6112 | if (recovery_type > NFS_LOCK_NEW) { |
6113 | if (recovery_type == NFS_LOCK_RECLAIM) | |
6114 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
6115 | nfs4_set_sequence_privileged(&data->arg.seq_args); | |
c69899a1 TM |
6116 | } else |
6117 | data->arg.new_lock = 1; | |
c970aa85 | 6118 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 6119 | if (IS_ERR(task)) |
a5d16a4d | 6120 | return PTR_ERR(task); |
a5d16a4d TM |
6121 | ret = nfs4_wait_for_completion_rpc_task(task); |
6122 | if (ret == 0) { | |
6123 | ret = data->rpc_status; | |
2bee72a6 TM |
6124 | if (ret) |
6125 | nfs4_handle_setlk_error(data->server, data->lsp, | |
6126 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
6127 | } else |
6128 | data->cancelled = 1; | |
e6b3c4db | 6129 | rpc_put_task(task); |
3110ff80 | 6130 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
48c9579a | 6131 | trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret); |
a5d16a4d | 6132 | return ret; |
1da177e4 LT |
6133 | } |
6134 | ||
6135 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
6136 | { | |
202b50dc | 6137 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
6138 | struct nfs4_exception exception = { |
6139 | .inode = state->inode, | |
6140 | }; | |
202b50dc TM |
6141 | int err; |
6142 | ||
6143 | do { | |
42a2d13e TM |
6144 | /* Cache the lock if possible... */ |
6145 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
6146 | return 0; | |
afe6c27c | 6147 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 6148 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
6149 | break; |
6150 | nfs4_handle_exception(server, err, &exception); | |
6151 | } while (exception.retry); | |
6152 | return err; | |
1da177e4 LT |
6153 | } |
6154 | ||
6155 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
6156 | { | |
202b50dc | 6157 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
6158 | struct nfs4_exception exception = { |
6159 | .inode = state->inode, | |
6160 | }; | |
202b50dc TM |
6161 | int err; |
6162 | ||
6bfc93ef TM |
6163 | err = nfs4_set_lock_state(state, request); |
6164 | if (err != 0) | |
6165 | return err; | |
f6de7a39 | 6166 | if (!recover_lost_locks) { |
ef1820f9 N |
6167 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
6168 | return 0; | |
6169 | } | |
202b50dc | 6170 | do { |
42a2d13e TM |
6171 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
6172 | return 0; | |
afe6c27c | 6173 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
6174 | switch (err) { |
6175 | default: | |
6176 | goto out; | |
6177 | case -NFS4ERR_GRACE: | |
6178 | case -NFS4ERR_DELAY: | |
6179 | nfs4_handle_exception(server, err, &exception); | |
6180 | err = 0; | |
6181 | } | |
202b50dc | 6182 | } while (exception.retry); |
a9ed2e25 | 6183 | out: |
202b50dc | 6184 | return err; |
1da177e4 LT |
6185 | } |
6186 | ||
f062eb6c | 6187 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 BS |
6188 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) |
6189 | { | |
c5896fc8 TM |
6190 | struct nfs4_lock_state *lsp; |
6191 | int status; | |
b01dd1d8 | 6192 | |
c5896fc8 TM |
6193 | status = nfs4_set_lock_state(state, request); |
6194 | if (status != 0) | |
6195 | return status; | |
6196 | lsp = request->fl_u.nfs4_fl.owner; | |
6197 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) || | |
6198 | test_bit(NFS_LOCK_LOST, &lsp->ls_flags)) | |
6199 | return 0; | |
6200 | status = nfs4_lock_expired(state, request); | |
eb64cf96 | 6201 | return status; |
f062eb6c BS |
6202 | } |
6203 | #endif | |
6204 | ||
1da177e4 LT |
6205 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6206 | { | |
19e03c57 | 6207 | struct nfs_inode *nfsi = NFS_I(state->inode); |
11476e9d | 6208 | struct nfs4_state_owner *sp = state->owner; |
01c3b861 | 6209 | unsigned char fl_flags = request->fl_flags; |
1ea67dbd | 6210 | int status; |
1da177e4 | 6211 | |
01c3b861 | 6212 | request->fl_flags |= FL_ACCESS; |
75575ddf | 6213 | status = locks_lock_inode_wait(state->inode, request); |
01c3b861 TM |
6214 | if (status < 0) |
6215 | goto out; | |
11476e9d | 6216 | mutex_lock(&sp->so_delegreturn_mutex); |
19e03c57 | 6217 | down_read(&nfsi->rwsem); |
01c3b861 | 6218 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 6219 | /* Yes: cache locks! */ |
01c3b861 | 6220 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 6221 | request->fl_flags = fl_flags & ~FL_SLEEP; |
75575ddf | 6222 | status = locks_lock_inode_wait(state->inode, request); |
c69899a1 | 6223 | up_read(&nfsi->rwsem); |
11476e9d | 6224 | mutex_unlock(&sp->so_delegreturn_mutex); |
9a99af49 | 6225 | goto out; |
9a99af49 | 6226 | } |
19e03c57 | 6227 | up_read(&nfsi->rwsem); |
11476e9d | 6228 | mutex_unlock(&sp->so_delegreturn_mutex); |
c69899a1 | 6229 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
6230 | out: |
6231 | request->fl_flags = fl_flags; | |
1da177e4 LT |
6232 | return status; |
6233 | } | |
6234 | ||
6235 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6236 | { | |
a1d0b5ee TM |
6237 | struct nfs4_exception exception = { |
6238 | .state = state, | |
05ffe24f | 6239 | .inode = state->inode, |
a1d0b5ee | 6240 | }; |
1da177e4 LT |
6241 | int err; |
6242 | ||
6243 | do { | |
965b5d67 TM |
6244 | err = _nfs4_proc_setlk(state, cmd, request); |
6245 | if (err == -NFS4ERR_DENIED) | |
6246 | err = -EAGAIN; | |
1da177e4 | 6247 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 6248 | err, &exception); |
1da177e4 LT |
6249 | } while (exception.retry); |
6250 | return err; | |
6251 | } | |
6252 | ||
d2f3a7f9 JL |
6253 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) |
6254 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
6255 | ||
6256 | static int | |
a1d617d8 JL |
6257 | nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd, |
6258 | struct file_lock *request) | |
d2f3a7f9 JL |
6259 | { |
6260 | int status = -ERESTARTSYS; | |
6261 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
6262 | ||
6263 | while(!signalled()) { | |
6264 | status = nfs4_proc_setlk(state, cmd, request); | |
6265 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6266 | break; | |
6267 | freezable_schedule_timeout_interruptible(timeout); | |
6268 | timeout *= 2; | |
6269 | timeout = min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT, timeout); | |
6270 | status = -ERESTARTSYS; | |
6271 | } | |
6272 | return status; | |
6273 | } | |
6274 | ||
a1d617d8 JL |
6275 | #ifdef CONFIG_NFS_V4_1 |
6276 | struct nfs4_lock_waiter { | |
6277 | struct task_struct *task; | |
6278 | struct inode *inode; | |
6279 | struct nfs_lowner *owner; | |
6280 | bool notified; | |
6281 | }; | |
6282 | ||
6283 | static int | |
6284 | nfs4_wake_lock_waiter(wait_queue_t *wait, unsigned int mode, int flags, void *key) | |
6285 | { | |
6286 | int ret; | |
6287 | struct cb_notify_lock_args *cbnl = key; | |
6288 | struct nfs4_lock_waiter *waiter = wait->private; | |
6289 | struct nfs_lowner *lowner = &cbnl->cbnl_owner, | |
6290 | *wowner = waiter->owner; | |
6291 | ||
6292 | /* Only wake if the callback was for the same owner */ | |
6293 | if (lowner->clientid != wowner->clientid || | |
6294 | lowner->id != wowner->id || | |
6295 | lowner->s_dev != wowner->s_dev) | |
6296 | return 0; | |
6297 | ||
6298 | /* Make sure it's for the right inode */ | |
6299 | if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh)) | |
6300 | return 0; | |
6301 | ||
6302 | waiter->notified = true; | |
6303 | ||
6304 | /* override "private" so we can use default_wake_function */ | |
6305 | wait->private = waiter->task; | |
6306 | ret = autoremove_wake_function(wait, mode, flags, key); | |
6307 | wait->private = waiter; | |
6308 | return ret; | |
6309 | } | |
6310 | ||
6311 | static int | |
6312 | nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6313 | { | |
6314 | int status = -ERESTARTSYS; | |
6315 | unsigned long flags; | |
6316 | struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner; | |
6317 | struct nfs_server *server = NFS_SERVER(state->inode); | |
6318 | struct nfs_client *clp = server->nfs_client; | |
6319 | wait_queue_head_t *q = &clp->cl_lock_waitq; | |
6320 | struct nfs_lowner owner = { .clientid = clp->cl_clientid, | |
6321 | .id = lsp->ls_seqid.owner_id, | |
6322 | .s_dev = server->s_dev }; | |
6323 | struct nfs4_lock_waiter waiter = { .task = current, | |
6324 | .inode = state->inode, | |
6325 | .owner = &owner, | |
6326 | .notified = false }; | |
6327 | wait_queue_t wait; | |
6328 | ||
6329 | /* Don't bother with waitqueue if we don't expect a callback */ | |
6330 | if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags)) | |
6331 | return nfs4_retry_setlk_simple(state, cmd, request); | |
6332 | ||
6333 | init_wait(&wait); | |
6334 | wait.private = &waiter; | |
6335 | wait.func = nfs4_wake_lock_waiter; | |
6336 | add_wait_queue(q, &wait); | |
6337 | ||
6338 | while(!signalled()) { | |
6339 | status = nfs4_proc_setlk(state, cmd, request); | |
6340 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
6341 | break; | |
6342 | ||
6343 | status = -ERESTARTSYS; | |
6344 | spin_lock_irqsave(&q->lock, flags); | |
6345 | if (waiter.notified) { | |
6346 | spin_unlock_irqrestore(&q->lock, flags); | |
6347 | continue; | |
6348 | } | |
6349 | set_current_state(TASK_INTERRUPTIBLE); | |
6350 | spin_unlock_irqrestore(&q->lock, flags); | |
6351 | ||
6352 | freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT); | |
6353 | } | |
6354 | ||
6355 | finish_wait(q, &wait); | |
6356 | return status; | |
6357 | } | |
6358 | #else /* !CONFIG_NFS_V4_1 */ | |
6359 | static inline int | |
6360 | nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6361 | { | |
6362 | return nfs4_retry_setlk_simple(state, cmd, request); | |
6363 | } | |
6364 | #endif | |
6365 | ||
1da177e4 LT |
6366 | static int |
6367 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
6368 | { | |
6369 | struct nfs_open_context *ctx; | |
6370 | struct nfs4_state *state; | |
1da177e4 LT |
6371 | int status; |
6372 | ||
6373 | /* verify open state */ | |
cd3758e3 | 6374 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
6375 | state = ctx->state; |
6376 | ||
6377 | if (request->fl_start < 0 || request->fl_end < 0) | |
6378 | return -EINVAL; | |
6379 | ||
d953126a TM |
6380 | if (IS_GETLK(cmd)) { |
6381 | if (state != NULL) | |
6382 | return nfs4_proc_getlk(state, F_GETLK, request); | |
6383 | return 0; | |
6384 | } | |
1da177e4 LT |
6385 | |
6386 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
6387 | return -EINVAL; | |
6388 | ||
d953126a TM |
6389 | if (request->fl_type == F_UNLCK) { |
6390 | if (state != NULL) | |
6391 | return nfs4_proc_unlck(state, cmd, request); | |
6392 | return 0; | |
6393 | } | |
1da177e4 | 6394 | |
d953126a TM |
6395 | if (state == NULL) |
6396 | return -ENOLCK; | |
1ea67dbd JL |
6397 | |
6398 | if ((request->fl_flags & FL_POSIX) && | |
6399 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
6400 | return -ENOLCK; | |
6401 | ||
55725513 TM |
6402 | /* |
6403 | * Don't rely on the VFS having checked the file open mode, | |
6404 | * since it won't do this for flock() locks. | |
6405 | */ | |
f44106e2 | 6406 | switch (request->fl_type) { |
55725513 TM |
6407 | case F_RDLCK: |
6408 | if (!(filp->f_mode & FMODE_READ)) | |
6409 | return -EBADF; | |
6410 | break; | |
6411 | case F_WRLCK: | |
6412 | if (!(filp->f_mode & FMODE_WRITE)) | |
6413 | return -EBADF; | |
6414 | } | |
6415 | ||
1ea67dbd JL |
6416 | status = nfs4_set_lock_state(state, request); |
6417 | if (status != 0) | |
6418 | return status; | |
6419 | ||
d2f3a7f9 | 6420 | return nfs4_retry_setlk(state, cmd, request); |
1da177e4 LT |
6421 | } |
6422 | ||
db4f2e63 | 6423 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
6424 | { |
6425 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
6426 | int err; |
6427 | ||
6428 | err = nfs4_set_lock_state(state, fl); | |
6429 | if (err != 0) | |
db4f2e63 | 6430 | return err; |
4a706fa0 | 6431 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
db4f2e63 | 6432 | return nfs4_handle_delegation_recall_error(server, state, stateid, err); |
888e694c | 6433 | } |
6b3b5496 | 6434 | |
cf470c3e TM |
6435 | struct nfs_release_lockowner_data { |
6436 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 6437 | struct nfs_server *server; |
cf470c3e | 6438 | struct nfs_release_lockowner_args args; |
b7e63a10 | 6439 | struct nfs_release_lockowner_res res; |
60ea6812 | 6440 | unsigned long timestamp; |
cf470c3e TM |
6441 | }; |
6442 | ||
fbd4bfd1 CL |
6443 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
6444 | { | |
6445 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 6446 | struct nfs_server *server = data->server; |
cb04ad2a PT |
6447 | nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, |
6448 | &data->args.seq_args, &data->res.seq_res, task); | |
5b53dc88 | 6449 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 6450 | data->timestamp = jiffies; |
fbd4bfd1 CL |
6451 | } |
6452 | ||
6453 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
6454 | { | |
6455 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
6456 | struct nfs_server *server = data->server; |
6457 | ||
b7e63a10 | 6458 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
6459 | |
6460 | switch (task->tk_status) { | |
6461 | case 0: | |
6462 | renew_lease(server, data->timestamp); | |
6463 | break; | |
6464 | case -NFS4ERR_STALE_CLIENTID: | |
6465 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
6466 | nfs4_schedule_lease_recovery(server->nfs_client); |
6467 | break; | |
60ea6812 CL |
6468 | case -NFS4ERR_LEASE_MOVED: |
6469 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
6470 | if (nfs4_async_handle_error(task, server, |
6471 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
6472 | rpc_restart_call_prepare(task); |
6473 | } | |
fbd4bfd1 CL |
6474 | } |
6475 | ||
d3c7b7cc TM |
6476 | static void nfs4_release_lockowner_release(void *calldata) |
6477 | { | |
cf470c3e | 6478 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 6479 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
6480 | kfree(calldata); |
6481 | } | |
6482 | ||
17280175 | 6483 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
6484 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
6485 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
6486 | .rpc_release = nfs4_release_lockowner_release, |
6487 | }; | |
6488 | ||
f1cdae87 JL |
6489 | static void |
6490 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 6491 | { |
cf470c3e | 6492 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
6493 | struct rpc_message msg = { |
6494 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
6495 | }; | |
6496 | ||
6497 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 6498 | return; |
fbd4bfd1 | 6499 | |
cf470c3e TM |
6500 | data = kmalloc(sizeof(*data), GFP_NOFS); |
6501 | if (!data) | |
f1cdae87 | 6502 | return; |
cf470c3e | 6503 | data->lsp = lsp; |
5ae67c4f | 6504 | data->server = server; |
cf470c3e TM |
6505 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
6506 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
6507 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 6508 | |
cf470c3e | 6509 | msg.rpc_argp = &data->args; |
b7e63a10 TM |
6510 | msg.rpc_resp = &data->res; |
6511 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); | |
cf470c3e | 6512 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
6513 | } |
6514 | ||
aa1870af BF |
6515 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
6516 | ||
d9a82a04 | 6517 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
59301226 AV |
6518 | struct dentry *unused, struct inode *inode, |
6519 | const char *key, const void *buf, | |
6520 | size_t buflen, int flags) | |
6b3b5496 | 6521 | { |
59301226 | 6522 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
6523 | } |
6524 | ||
d9a82a04 | 6525 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
b296821a AV |
6526 | struct dentry *unused, struct inode *inode, |
6527 | const char *key, void *buf, size_t buflen) | |
6b3b5496 | 6528 | { |
b296821a | 6529 | return nfs4_proc_get_acl(inode, buf, buflen); |
6b3b5496 BF |
6530 | } |
6531 | ||
764a5c6b | 6532 | static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry) |
6b3b5496 | 6533 | { |
764a5c6b | 6534 | return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry))); |
6b3b5496 BF |
6535 | } |
6536 | ||
c9bccef6 | 6537 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
c9bccef6 | 6538 | |
d9a82a04 | 6539 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
59301226 AV |
6540 | struct dentry *unused, struct inode *inode, |
6541 | const char *key, const void *buf, | |
6542 | size_t buflen, int flags) | |
c9bccef6 DQ |
6543 | { |
6544 | if (security_ismaclabel(key)) | |
59301226 | 6545 | return nfs4_set_security_label(inode, buf, buflen); |
c9bccef6 DQ |
6546 | |
6547 | return -EOPNOTSUPP; | |
6548 | } | |
6549 | ||
d9a82a04 | 6550 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
b296821a AV |
6551 | struct dentry *unused, struct inode *inode, |
6552 | const char *key, void *buf, size_t buflen) | |
c9bccef6 DQ |
6553 | { |
6554 | if (security_ismaclabel(key)) | |
b296821a | 6555 | return nfs4_get_security_label(inode, buf, buflen); |
c9bccef6 DQ |
6556 | return -EOPNOTSUPP; |
6557 | } | |
6558 | ||
c4803c49 AG |
6559 | static ssize_t |
6560 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
c9bccef6 | 6561 | { |
c4803c49 | 6562 | int len = 0; |
c9bccef6 | 6563 | |
c4803c49 AG |
6564 | if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) { |
6565 | len = security_inode_listsecurity(inode, list, list_len); | |
6566 | if (list_len && len > list_len) | |
6567 | return -ERANGE; | |
c9bccef6 DQ |
6568 | } |
6569 | return len; | |
6570 | } | |
6571 | ||
6572 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
6573 | .prefix = XATTR_SECURITY_PREFIX, | |
c9bccef6 DQ |
6574 | .get = nfs4_xattr_get_nfs4_label, |
6575 | .set = nfs4_xattr_set_nfs4_label, | |
6576 | }; | |
c9bccef6 | 6577 | |
c4803c49 AG |
6578 | #else |
6579 | ||
6580 | static ssize_t | |
6581 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
6582 | { | |
6583 | return 0; | |
6584 | } | |
6585 | ||
6586 | #endif | |
c9bccef6 | 6587 | |
533eb461 AA |
6588 | /* |
6589 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
6590 | */ | |
69aaaae1 TM |
6591 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
6592 | { | |
533eb461 AA |
6593 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
6594 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
6595 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 6596 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
6597 | return; |
6598 | ||
6599 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 6600 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
6601 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
6602 | fattr->nlink = 2; | |
6603 | } | |
6604 | ||
f05d147f BS |
6605 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6606 | const struct qstr *name, | |
6607 | struct nfs4_fs_locations *fs_locations, | |
6608 | struct page *page) | |
683b57b4 TM |
6609 | { |
6610 | struct nfs_server *server = NFS_SERVER(dir); | |
a09df2ca | 6611 | u32 bitmask[3] = { |
361e624f | 6612 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
6613 | }; |
6614 | struct nfs4_fs_locations_arg args = { | |
6615 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 6616 | .name = name, |
683b57b4 TM |
6617 | .page = page, |
6618 | .bitmask = bitmask, | |
6619 | }; | |
22958463 BH |
6620 | struct nfs4_fs_locations_res res = { |
6621 | .fs_locations = fs_locations, | |
6622 | }; | |
683b57b4 TM |
6623 | struct rpc_message msg = { |
6624 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6625 | .rpc_argp = &args, | |
22958463 | 6626 | .rpc_resp = &res, |
683b57b4 TM |
6627 | }; |
6628 | int status; | |
6629 | ||
3110ff80 | 6630 | dprintk("%s: start\n", __func__); |
533eb461 AA |
6631 | |
6632 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
6633 | * is not supported */ | |
6634 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
6635 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
6636 | else | |
6637 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
6638 | ||
c228fd3a | 6639 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 6640 | fs_locations->server = server; |
830b8e33 | 6641 | fs_locations->nlocations = 0; |
f05d147f | 6642 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 6643 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
6644 | return status; |
6645 | } | |
6646 | ||
f05d147f BS |
6647 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
6648 | const struct qstr *name, | |
6649 | struct nfs4_fs_locations *fs_locations, | |
6650 | struct page *page) | |
db0a9593 BS |
6651 | { |
6652 | struct nfs4_exception exception = { }; | |
6653 | int err; | |
6654 | do { | |
078ea3df TM |
6655 | err = _nfs4_proc_fs_locations(client, dir, name, |
6656 | fs_locations, page); | |
6657 | trace_nfs4_get_fs_locations(dir, name, err); | |
6658 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
6659 | &exception); |
6660 | } while (exception.retry); | |
6661 | return err; | |
6662 | } | |
6663 | ||
b03d735b CL |
6664 | /* |
6665 | * This operation also signals the server that this client is | |
6666 | * performing migration recovery. The server can stop returning | |
6667 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
6668 | * appended to this compound to identify the client ID which is | |
6669 | * performing recovery. | |
6670 | */ | |
6671 | static int _nfs40_proc_get_locations(struct inode *inode, | |
6672 | struct nfs4_fs_locations *locations, | |
6673 | struct page *page, struct rpc_cred *cred) | |
6674 | { | |
6675 | struct nfs_server *server = NFS_SERVER(inode); | |
6676 | struct rpc_clnt *clnt = server->client; | |
6677 | u32 bitmask[2] = { | |
6678 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6679 | }; | |
6680 | struct nfs4_fs_locations_arg args = { | |
6681 | .clientid = server->nfs_client->cl_clientid, | |
6682 | .fh = NFS_FH(inode), | |
6683 | .page = page, | |
6684 | .bitmask = bitmask, | |
6685 | .migration = 1, /* skip LOOKUP */ | |
6686 | .renew = 1, /* append RENEW */ | |
6687 | }; | |
6688 | struct nfs4_fs_locations_res res = { | |
6689 | .fs_locations = locations, | |
6690 | .migration = 1, | |
6691 | .renew = 1, | |
6692 | }; | |
6693 | struct rpc_message msg = { | |
6694 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6695 | .rpc_argp = &args, | |
6696 | .rpc_resp = &res, | |
6697 | .rpc_cred = cred, | |
6698 | }; | |
6699 | unsigned long now = jiffies; | |
6700 | int status; | |
6701 | ||
6702 | nfs_fattr_init(&locations->fattr); | |
6703 | locations->server = server; | |
6704 | locations->nlocations = 0; | |
6705 | ||
6706 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6707 | nfs4_set_sequence_privileged(&args.seq_args); | |
6708 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6709 | &args.seq_args, &res.seq_res); | |
6710 | if (status) | |
6711 | return status; | |
6712 | ||
6713 | renew_lease(server, now); | |
6714 | return 0; | |
6715 | } | |
6716 | ||
6717 | #ifdef CONFIG_NFS_V4_1 | |
6718 | ||
6719 | /* | |
6720 | * This operation also signals the server that this client is | |
6721 | * performing migration recovery. The server can stop asserting | |
6722 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
6723 | * performing this operation is identified in the SEQUENCE | |
6724 | * operation in this compound. | |
6725 | * | |
6726 | * When the client supports GETATTR(fs_locations_info), it can | |
6727 | * be plumbed in here. | |
6728 | */ | |
6729 | static int _nfs41_proc_get_locations(struct inode *inode, | |
6730 | struct nfs4_fs_locations *locations, | |
6731 | struct page *page, struct rpc_cred *cred) | |
6732 | { | |
6733 | struct nfs_server *server = NFS_SERVER(inode); | |
6734 | struct rpc_clnt *clnt = server->client; | |
6735 | u32 bitmask[2] = { | |
6736 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
6737 | }; | |
6738 | struct nfs4_fs_locations_arg args = { | |
6739 | .fh = NFS_FH(inode), | |
6740 | .page = page, | |
6741 | .bitmask = bitmask, | |
6742 | .migration = 1, /* skip LOOKUP */ | |
6743 | }; | |
6744 | struct nfs4_fs_locations_res res = { | |
6745 | .fs_locations = locations, | |
6746 | .migration = 1, | |
6747 | }; | |
6748 | struct rpc_message msg = { | |
6749 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
6750 | .rpc_argp = &args, | |
6751 | .rpc_resp = &res, | |
6752 | .rpc_cred = cred, | |
6753 | }; | |
6754 | int status; | |
6755 | ||
6756 | nfs_fattr_init(&locations->fattr); | |
6757 | locations->server = server; | |
6758 | locations->nlocations = 0; | |
6759 | ||
6760 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6761 | nfs4_set_sequence_privileged(&args.seq_args); | |
6762 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6763 | &args.seq_args, &res.seq_res); | |
6764 | if (status == NFS4_OK && | |
6765 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6766 | status = -NFS4ERR_LEASE_MOVED; | |
6767 | return status; | |
6768 | } | |
6769 | ||
6770 | #endif /* CONFIG_NFS_V4_1 */ | |
6771 | ||
6772 | /** | |
6773 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
6774 | * @inode: inode on FSID that is migrating | |
6775 | * @locations: result of query | |
6776 | * @page: buffer | |
6777 | * @cred: credential to use for this operation | |
6778 | * | |
6779 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
6780 | * operation failed, or a negative errno if a local error occurred. | |
6781 | * | |
6782 | * On success, "locations" is filled in, but if the server has | |
6783 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
6784 | * asserted. | |
6785 | * | |
6786 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
6787 | * from this client that require migration recovery. | |
6788 | */ | |
6789 | int nfs4_proc_get_locations(struct inode *inode, | |
6790 | struct nfs4_fs_locations *locations, | |
6791 | struct page *page, struct rpc_cred *cred) | |
6792 | { | |
6793 | struct nfs_server *server = NFS_SERVER(inode); | |
6794 | struct nfs_client *clp = server->nfs_client; | |
6795 | const struct nfs4_mig_recovery_ops *ops = | |
6796 | clp->cl_mvops->mig_recovery_ops; | |
6797 | struct nfs4_exception exception = { }; | |
6798 | int status; | |
6799 | ||
6800 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6801 | (unsigned long long)server->fsid.major, | |
6802 | (unsigned long long)server->fsid.minor, | |
6803 | clp->cl_hostname); | |
6804 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6805 | ||
6806 | do { | |
6807 | status = ops->get_locations(inode, locations, page, cred); | |
6808 | if (status != -NFS4ERR_DELAY) | |
6809 | break; | |
6810 | nfs4_handle_exception(server, status, &exception); | |
6811 | } while (exception.retry); | |
6812 | return status; | |
6813 | } | |
6814 | ||
44c99933 CL |
6815 | /* |
6816 | * This operation also signals the server that this client is | |
6817 | * performing "lease moved" recovery. The server can stop | |
6818 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
6819 | * is appended to this compound to identify the client ID which is | |
6820 | * performing recovery. | |
6821 | */ | |
6822 | static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6823 | { | |
6824 | struct nfs_server *server = NFS_SERVER(inode); | |
6825 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
6826 | struct rpc_clnt *clnt = server->client; | |
6827 | struct nfs4_fsid_present_arg args = { | |
6828 | .fh = NFS_FH(inode), | |
6829 | .clientid = clp->cl_clientid, | |
6830 | .renew = 1, /* append RENEW */ | |
6831 | }; | |
6832 | struct nfs4_fsid_present_res res = { | |
6833 | .renew = 1, | |
6834 | }; | |
6835 | struct rpc_message msg = { | |
6836 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6837 | .rpc_argp = &args, | |
6838 | .rpc_resp = &res, | |
6839 | .rpc_cred = cred, | |
6840 | }; | |
6841 | unsigned long now = jiffies; | |
6842 | int status; | |
6843 | ||
6844 | res.fh = nfs_alloc_fhandle(); | |
6845 | if (res.fh == NULL) | |
6846 | return -ENOMEM; | |
6847 | ||
6848 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6849 | nfs4_set_sequence_privileged(&args.seq_args); | |
6850 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6851 | &args.seq_args, &res.seq_res); | |
6852 | nfs_free_fhandle(res.fh); | |
6853 | if (status) | |
6854 | return status; | |
6855 | ||
6856 | do_renew_lease(clp, now); | |
6857 | return 0; | |
6858 | } | |
6859 | ||
6860 | #ifdef CONFIG_NFS_V4_1 | |
6861 | ||
6862 | /* | |
6863 | * This operation also signals the server that this client is | |
6864 | * performing "lease moved" recovery. The server can stop asserting | |
6865 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
6866 | * this operation is identified in the SEQUENCE operation in this | |
6867 | * compound. | |
6868 | */ | |
6869 | static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6870 | { | |
6871 | struct nfs_server *server = NFS_SERVER(inode); | |
6872 | struct rpc_clnt *clnt = server->client; | |
6873 | struct nfs4_fsid_present_arg args = { | |
6874 | .fh = NFS_FH(inode), | |
6875 | }; | |
6876 | struct nfs4_fsid_present_res res = { | |
6877 | }; | |
6878 | struct rpc_message msg = { | |
6879 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
6880 | .rpc_argp = &args, | |
6881 | .rpc_resp = &res, | |
6882 | .rpc_cred = cred, | |
6883 | }; | |
6884 | int status; | |
6885 | ||
6886 | res.fh = nfs_alloc_fhandle(); | |
6887 | if (res.fh == NULL) | |
6888 | return -ENOMEM; | |
6889 | ||
6890 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); | |
6891 | nfs4_set_sequence_privileged(&args.seq_args); | |
6892 | status = nfs4_call_sync_sequence(clnt, server, &msg, | |
6893 | &args.seq_args, &res.seq_res); | |
6894 | nfs_free_fhandle(res.fh); | |
6895 | if (status == NFS4_OK && | |
6896 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
6897 | status = -NFS4ERR_LEASE_MOVED; | |
6898 | return status; | |
6899 | } | |
6900 | ||
6901 | #endif /* CONFIG_NFS_V4_1 */ | |
6902 | ||
6903 | /** | |
6904 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
6905 | * @inode: inode on FSID to check | |
6906 | * @cred: credential to use for this operation | |
6907 | * | |
6908 | * Server indicates whether the FSID is present, moved, or not | |
6909 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
6910 | * condition for this client ID. | |
6911 | * | |
6912 | * Returns NFS4_OK if the FSID is present on this server, | |
6913 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
6914 | * NFS4ERR code if some error occurred on the server, or a | |
6915 | * negative errno if a local failure occurred. | |
6916 | */ | |
6917 | int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred) | |
6918 | { | |
6919 | struct nfs_server *server = NFS_SERVER(inode); | |
6920 | struct nfs_client *clp = server->nfs_client; | |
6921 | const struct nfs4_mig_recovery_ops *ops = | |
6922 | clp->cl_mvops->mig_recovery_ops; | |
6923 | struct nfs4_exception exception = { }; | |
6924 | int status; | |
6925 | ||
6926 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
6927 | (unsigned long long)server->fsid.major, | |
6928 | (unsigned long long)server->fsid.minor, | |
6929 | clp->cl_hostname); | |
6930 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
6931 | ||
6932 | do { | |
6933 | status = ops->fsid_present(inode, cred); | |
6934 | if (status != -NFS4ERR_DELAY) | |
6935 | break; | |
6936 | nfs4_handle_exception(server, status, &exception); | |
6937 | } while (exception.retry); | |
6938 | return status; | |
6939 | } | |
6940 | ||
5ec16a85 | 6941 | /** |
a5250def WAA |
6942 | * If 'use_integrity' is true and the state managment nfs_client |
6943 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
6944 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
6945 | * Considerations sections. Otherwise, just use the user cred with the | |
6946 | * filesystem's rpc_client. | |
5ec16a85 | 6947 | */ |
a5250def | 6948 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
6949 | { |
6950 | int status; | |
6951 | struct nfs4_secinfo_arg args = { | |
6952 | .dir_fh = NFS_FH(dir), | |
6953 | .name = name, | |
6954 | }; | |
6955 | struct nfs4_secinfo_res res = { | |
6956 | .flavors = flavors, | |
6957 | }; | |
6958 | struct rpc_message msg = { | |
6959 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
6960 | .rpc_argp = &args, | |
6961 | .rpc_resp = &res, | |
6962 | }; | |
a5250def | 6963 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
7cb852df | 6964 | struct rpc_cred *cred = NULL; |
a5250def WAA |
6965 | |
6966 | if (use_integrity) { | |
6967 | clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient; | |
7cb852df WAA |
6968 | cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client); |
6969 | msg.rpc_cred = cred; | |
a5250def | 6970 | } |
5a5ea0d4 BS |
6971 | |
6972 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e WAA |
6973 | |
6974 | nfs4_state_protect(NFS_SERVER(dir)->nfs_client, | |
6975 | NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); | |
6976 | ||
a5250def WAA |
6977 | status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, |
6978 | &res.seq_res, 0); | |
5a5ea0d4 | 6979 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 6980 | |
7cb852df WAA |
6981 | if (cred) |
6982 | put_rpccred(cred); | |
a5250def | 6983 | |
5a5ea0d4 BS |
6984 | return status; |
6985 | } | |
6986 | ||
72de53ec BS |
6987 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
6988 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
6989 | { |
6990 | struct nfs4_exception exception = { }; | |
6991 | int err; | |
6992 | do { | |
a5250def WAA |
6993 | err = -NFS4ERR_WRONGSEC; |
6994 | ||
6995 | /* try to use integrity protection with machine cred */ | |
6996 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
6997 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
6998 | ||
6999 | /* | |
7000 | * if unable to use integrity protection, or SECINFO with | |
7001 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
7002 | * disallowed by spec, but exists in deployed servers) use | |
7003 | * the current filesystem's rpc_client and the user cred. | |
7004 | */ | |
7005 | if (err == -NFS4ERR_WRONGSEC) | |
7006 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
7007 | ||
078ea3df TM |
7008 | trace_nfs4_secinfo(dir, name, err); |
7009 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
7010 | &exception); |
7011 | } while (exception.retry); | |
7012 | return err; | |
7013 | } | |
7014 | ||
557134a3 | 7015 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
7016 | /* |
7017 | * Check the exchange flags returned by the server for invalid flags, having | |
7018 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
7019 | * DS flags set. | |
7020 | */ | |
7021 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
7022 | { | |
7023 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
7024 | goto out_inval; | |
7025 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
7026 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
7027 | goto out_inval; | |
7028 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
7029 | goto out_inval; | |
7030 | return NFS_OK; | |
7031 | out_inval: | |
7032 | return -NFS4ERR_INVAL; | |
7033 | } | |
7034 | ||
78fe0f41 | 7035 | static bool |
79d4e1f0 CL |
7036 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
7037 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
7038 | { |
7039 | if (a->server_scope_sz == b->server_scope_sz && | |
7040 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
7041 | return true; | |
7042 | ||
7043 | return false; | |
7044 | } | |
7045 | ||
02a95dee AA |
7046 | static void |
7047 | nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata) | |
7048 | { | |
7049 | } | |
7050 | ||
7051 | static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = { | |
7052 | .rpc_call_done = &nfs4_bind_one_conn_to_session_done, | |
7053 | }; | |
7054 | ||
7c44f1ae | 7055 | /* |
d9ddbf5d | 7056 | * nfs4_proc_bind_one_conn_to_session() |
7c44f1ae WAA |
7057 | * |
7058 | * The 4.1 client currently uses the same TCP connection for the | |
7059 | * fore and backchannel. | |
7060 | */ | |
d9ddbf5d TM |
7061 | static |
7062 | int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt, | |
7063 | struct rpc_xprt *xprt, | |
7064 | struct nfs_client *clp, | |
7065 | struct rpc_cred *cred) | |
7c44f1ae WAA |
7066 | { |
7067 | int status; | |
71a097c6 TM |
7068 | struct nfs41_bind_conn_to_session_args args = { |
7069 | .client = clp, | |
7070 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
7071 | }; | |
7c44f1ae WAA |
7072 | struct nfs41_bind_conn_to_session_res res; |
7073 | struct rpc_message msg = { | |
7074 | .rpc_proc = | |
7075 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 7076 | .rpc_argp = &args, |
7c44f1ae | 7077 | .rpc_resp = &res, |
2cf047c9 | 7078 | .rpc_cred = cred, |
7c44f1ae | 7079 | }; |
d9ddbf5d TM |
7080 | struct rpc_task_setup task_setup_data = { |
7081 | .rpc_client = clnt, | |
7082 | .rpc_xprt = xprt, | |
02a95dee | 7083 | .callback_ops = &nfs4_bind_one_conn_to_session_ops, |
d9ddbf5d TM |
7084 | .rpc_message = &msg, |
7085 | .flags = RPC_TASK_TIMEOUT, | |
7086 | }; | |
7087 | struct rpc_task *task; | |
7c44f1ae WAA |
7088 | |
7089 | dprintk("--> %s\n", __func__); | |
7c44f1ae | 7090 | |
71a097c6 TM |
7091 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
7092 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
7093 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae | 7094 | |
d9ddbf5d TM |
7095 | /* Do not set the backchannel flag unless this is clnt->cl_xprt */ |
7096 | if (xprt != rcu_access_pointer(clnt->cl_xprt)) | |
7097 | args.dir = NFS4_CDFC4_FORE; | |
7098 | ||
7099 | task = rpc_run_task(&task_setup_data); | |
7100 | if (!IS_ERR(task)) { | |
7101 | status = task->tk_status; | |
7102 | rpc_put_task(task); | |
7103 | } else | |
7104 | status = PTR_ERR(task); | |
c6d01c6f | 7105 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 7106 | if (status == 0) { |
71a097c6 | 7107 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
7108 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
7109 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
7110 | status = -EIO; | |
71a097c6 | 7111 | goto out; |
7c44f1ae | 7112 | } |
71a097c6 | 7113 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
7114 | dprintk("NFS: %s: Unexpected direction from server\n", |
7115 | __func__); | |
7116 | status = -EIO; | |
71a097c6 | 7117 | goto out; |
7c44f1ae | 7118 | } |
71a097c6 | 7119 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
7120 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
7121 | __func__); | |
7122 | status = -EIO; | |
71a097c6 | 7123 | goto out; |
7c44f1ae WAA |
7124 | } |
7125 | } | |
7c44f1ae WAA |
7126 | out: |
7127 | dprintk("<-- %s status= %d\n", __func__, status); | |
7128 | return status; | |
7129 | } | |
7130 | ||
d9ddbf5d TM |
7131 | struct rpc_bind_conn_calldata { |
7132 | struct nfs_client *clp; | |
7133 | struct rpc_cred *cred; | |
7134 | }; | |
7135 | ||
7136 | static int | |
7137 | nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt, | |
7138 | struct rpc_xprt *xprt, | |
7139 | void *calldata) | |
7140 | { | |
7141 | struct rpc_bind_conn_calldata *p = calldata; | |
7142 | ||
7143 | return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred); | |
7144 | } | |
7145 | ||
7146 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) | |
7147 | { | |
7148 | struct rpc_bind_conn_calldata data = { | |
7149 | .clp = clp, | |
7150 | .cred = cred, | |
7151 | }; | |
7152 | return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient, | |
7153 | nfs4_proc_bind_conn_to_session_callback, &data); | |
7154 | } | |
7155 | ||
99fe60d0 | 7156 | /* |
fa940720 WAA |
7157 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
7158 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
7159 | */ |
7160 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
7161 | .how = SP4_MACH_CRED, | |
7162 | .enforce.u.words = { | |
7163 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
7164 | 1 << (OP_EXCHANGE_ID - 32) | | |
7165 | 1 << (OP_CREATE_SESSION - 32) | | |
7166 | 1 << (OP_DESTROY_SESSION - 32) | | |
7167 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
7168 | }, |
7169 | .allow.u.words = { | |
7170 | [0] = 1 << (OP_CLOSE) | | |
99ade3c7 | 7171 | 1 << (OP_OPEN_DOWNGRADE) | |
a0279625 | 7172 | 1 << (OP_LOCKU) | |
99ade3c7 | 7173 | 1 << (OP_DELEGRETURN) | |
a0279625 | 7174 | 1 << (OP_COMMIT), |
8b5bee2e | 7175 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 | 7176 | 1 << (OP_SECINFO_NO_NAME - 32) | |
99ade3c7 | 7177 | 1 << (OP_LAYOUTRETURN - 32) | |
3787d506 | 7178 | 1 << (OP_TEST_STATEID - 32) | |
a0279625 WAA |
7179 | 1 << (OP_FREE_STATEID - 32) | |
7180 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
7181 | } |
7182 | }; | |
7183 | ||
7184 | /* | |
7185 | * Select the state protection mode for client `clp' given the server results | |
7186 | * from exchange_id in `sp'. | |
99fe60d0 | 7187 | * |
2031cd1a WAA |
7188 | * Returns 0 on success, negative errno otherwise. |
7189 | */ | |
7190 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
7191 | struct nfs41_state_protection *sp) | |
7192 | { | |
7193 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
7194 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
7195 | 1 << (OP_EXCHANGE_ID - 32) | | |
7196 | 1 << (OP_CREATE_SESSION - 32) | | |
7197 | 1 << (OP_DESTROY_SESSION - 32) | | |
7198 | 1 << (OP_DESTROY_CLIENTID - 32) | |
7199 | }; | |
7200 | unsigned int i; | |
7201 | ||
7202 | if (sp->how == SP4_MACH_CRED) { | |
7203 | /* Print state protect result */ | |
7204 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
7205 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
7206 | if (test_bit(i, sp->enforce.u.longs)) | |
7207 | dfprintk(MOUNT, " enforce op %d\n", i); | |
7208 | if (test_bit(i, sp->allow.u.longs)) | |
7209 | dfprintk(MOUNT, " allow op %d\n", i); | |
7210 | } | |
7211 | ||
7212 | /* make sure nothing is on enforce list that isn't supported */ | |
7213 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
7214 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
7215 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
7216 | return -EINVAL; | |
7217 | } | |
7218 | } | |
7219 | ||
7220 | /* | |
7221 | * Minimal mode - state operations are allowed to use machine | |
7222 | * credential. Note this already happens by default, so the | |
7223 | * client doesn't have to do anything more than the negotiation. | |
7224 | * | |
7225 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
7226 | * we're already using the machine cred for exchange_id | |
7227 | * and will never use a different cred. | |
7228 | */ | |
7229 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
7230 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
7231 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
7232 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
7233 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
7234 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
7235 | set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags); | |
7236 | } else { | |
7237 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
7238 | return -EINVAL; | |
7239 | } | |
fa940720 WAA |
7240 | |
7241 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
99ade3c7 AE |
7242 | test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) && |
7243 | test_bit(OP_DELEGRETURN, sp->allow.u.longs) && | |
fa940720 WAA |
7244 | test_bit(OP_LOCKU, sp->allow.u.longs)) { |
7245 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
7246 | set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags); | |
7247 | } | |
8b5bee2e | 7248 | |
99ade3c7 AE |
7249 | if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) { |
7250 | dfprintk(MOUNT, " pnfs cleanup mode enabled\n"); | |
7251 | set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
7252 | &clp->cl_sp4_flags); | |
7253 | } | |
7254 | ||
8b5bee2e WAA |
7255 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && |
7256 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
7257 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
7258 | set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags); | |
7259 | } | |
3787d506 WAA |
7260 | |
7261 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
7262 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
7263 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
7264 | set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags); | |
7265 | } | |
8c21c62c WAA |
7266 | |
7267 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
7268 | dfprintk(MOUNT, " write mode enabled\n"); | |
7269 | set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags); | |
7270 | } | |
7271 | ||
7272 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
7273 | dfprintk(MOUNT, " commit mode enabled\n"); | |
7274 | set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags); | |
7275 | } | |
2031cd1a WAA |
7276 | } |
7277 | ||
7278 | return 0; | |
7279 | } | |
7280 | ||
8d89bd70 AA |
7281 | struct nfs41_exchange_id_data { |
7282 | struct nfs41_exchange_id_res res; | |
7283 | struct nfs41_exchange_id_args args; | |
ad0849a7 | 7284 | struct rpc_xprt *xprt; |
8d89bd70 AA |
7285 | int rpc_status; |
7286 | }; | |
7287 | ||
7288 | static void nfs4_exchange_id_done(struct rpc_task *task, void *data) | |
7289 | { | |
7290 | struct nfs41_exchange_id_data *cdata = | |
7291 | (struct nfs41_exchange_id_data *)data; | |
7292 | struct nfs_client *clp = cdata->args.client; | |
7293 | int status = task->tk_status; | |
7294 | ||
7295 | trace_nfs4_exchange_id(clp, status); | |
7296 | ||
7297 | if (status == 0) | |
7298 | status = nfs4_check_cl_exchange_flags(cdata->res.flags); | |
ad0849a7 AA |
7299 | |
7300 | if (cdata->xprt && status == 0) { | |
7301 | status = nfs4_detect_session_trunking(clp, &cdata->res, | |
7302 | cdata->xprt); | |
7303 | goto out; | |
7304 | } | |
7305 | ||
8d89bd70 AA |
7306 | if (status == 0) |
7307 | status = nfs4_sp4_select_mode(clp, &cdata->res.state_protect); | |
7308 | ||
7309 | if (status == 0) { | |
7310 | clp->cl_clientid = cdata->res.clientid; | |
7311 | clp->cl_exchange_flags = cdata->res.flags; | |
7312 | /* Client ID is not confirmed */ | |
7313 | if (!(cdata->res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { | |
7314 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
7315 | &clp->cl_session->session_state); | |
7316 | clp->cl_seqid = cdata->res.seqid; | |
7317 | } | |
7318 | ||
7319 | kfree(clp->cl_serverowner); | |
7320 | clp->cl_serverowner = cdata->res.server_owner; | |
7321 | cdata->res.server_owner = NULL; | |
7322 | ||
7323 | /* use the most recent implementation id */ | |
7324 | kfree(clp->cl_implid); | |
7325 | clp->cl_implid = cdata->res.impl_id; | |
7326 | cdata->res.impl_id = NULL; | |
7327 | ||
7328 | if (clp->cl_serverscope != NULL && | |
7329 | !nfs41_same_server_scope(clp->cl_serverscope, | |
7330 | cdata->res.server_scope)) { | |
7331 | dprintk("%s: server_scope mismatch detected\n", | |
7332 | __func__); | |
7333 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
7334 | kfree(clp->cl_serverscope); | |
7335 | clp->cl_serverscope = NULL; | |
7336 | } | |
7337 | ||
7338 | if (clp->cl_serverscope == NULL) { | |
7339 | clp->cl_serverscope = cdata->res.server_scope; | |
7340 | cdata->res.server_scope = NULL; | |
7341 | } | |
ad0849a7 AA |
7342 | /* Save the EXCHANGE_ID verifier session trunk tests */ |
7343 | memcpy(clp->cl_confirm.data, cdata->args.verifier->data, | |
7344 | sizeof(clp->cl_confirm.data)); | |
8d89bd70 | 7345 | } |
ad0849a7 | 7346 | out: |
8d89bd70 | 7347 | cdata->rpc_status = status; |
ad0849a7 | 7348 | return; |
8d89bd70 AA |
7349 | } |
7350 | ||
7351 | static void nfs4_exchange_id_release(void *data) | |
7352 | { | |
7353 | struct nfs41_exchange_id_data *cdata = | |
7354 | (struct nfs41_exchange_id_data *)data; | |
7355 | ||
7356 | nfs_put_client(cdata->args.client); | |
ad0849a7 AA |
7357 | if (cdata->xprt) { |
7358 | xprt_put(cdata->xprt); | |
7359 | rpc_clnt_xprt_switch_put(cdata->args.client->cl_rpcclient); | |
7360 | } | |
8d89bd70 AA |
7361 | kfree(cdata->res.impl_id); |
7362 | kfree(cdata->res.server_scope); | |
7363 | kfree(cdata->res.server_owner); | |
7364 | kfree(cdata); | |
7365 | } | |
7366 | ||
7367 | static const struct rpc_call_ops nfs4_exchange_id_call_ops = { | |
7368 | .rpc_call_done = nfs4_exchange_id_done, | |
7369 | .rpc_release = nfs4_exchange_id_release, | |
7370 | }; | |
7371 | ||
2031cd1a WAA |
7372 | /* |
7373 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 7374 | * |
2031cd1a | 7375 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 7376 | */ |
2031cd1a | 7377 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, |
ad0849a7 | 7378 | u32 sp4_how, struct rpc_xprt *xprt) |
99fe60d0 BH |
7379 | { |
7380 | nfs4_verifier verifier; | |
99fe60d0 BH |
7381 | struct rpc_message msg = { |
7382 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
99fe60d0 BH |
7383 | .rpc_cred = cred, |
7384 | }; | |
8d89bd70 AA |
7385 | struct rpc_task_setup task_setup_data = { |
7386 | .rpc_client = clp->cl_rpcclient, | |
7387 | .callback_ops = &nfs4_exchange_id_call_ops, | |
7388 | .rpc_message = &msg, | |
7389 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, | |
7390 | }; | |
7391 | struct nfs41_exchange_id_data *calldata; | |
7392 | struct rpc_task *task; | |
7393 | int status = -EIO; | |
7394 | ||
7395 | if (!atomic_inc_not_zero(&clp->cl_count)) | |
7396 | goto out; | |
7397 | ||
7398 | status = -ENOMEM; | |
7399 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); | |
7400 | if (!calldata) | |
7401 | goto out; | |
99fe60d0 | 7402 | |
ad0849a7 AA |
7403 | if (!xprt) |
7404 | nfs4_init_boot_verifier(clp, &verifier); | |
873e3851 JL |
7405 | |
7406 | status = nfs4_init_uniform_client_string(clp); | |
7407 | if (status) | |
8d89bd70 | 7408 | goto out_calldata; |
3a6bb738 JL |
7409 | |
7410 | dprintk("NFS call exchange_id auth=%s, '%s'\n", | |
6bbb4ae8 | 7411 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 7412 | clp->cl_owner_id); |
99fe60d0 | 7413 | |
8d89bd70 AA |
7414 | calldata->res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
7415 | GFP_NOFS); | |
7416 | status = -ENOMEM; | |
7417 | if (unlikely(calldata->res.server_owner == NULL)) | |
7418 | goto out_calldata; | |
78fe0f41 | 7419 | |
8d89bd70 | 7420 | calldata->res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 7421 | GFP_NOFS); |
8d89bd70 | 7422 | if (unlikely(calldata->res.server_scope == NULL)) |
acdeb69d | 7423 | goto out_server_owner; |
78fe0f41 | 7424 | |
8d89bd70 AA |
7425 | calldata->res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
7426 | if (unlikely(calldata->res.impl_id == NULL)) | |
7d2ed9ac | 7427 | goto out_server_scope; |
7d2ed9ac | 7428 | |
2031cd1a WAA |
7429 | switch (sp4_how) { |
7430 | case SP4_NONE: | |
8d89bd70 | 7431 | calldata->args.state_protect.how = SP4_NONE; |
2031cd1a WAA |
7432 | break; |
7433 | ||
7434 | case SP4_MACH_CRED: | |
8d89bd70 | 7435 | calldata->args.state_protect = nfs4_sp4_mach_cred_request; |
2031cd1a WAA |
7436 | break; |
7437 | ||
7438 | default: | |
7439 | /* unsupported! */ | |
7440 | WARN_ON_ONCE(1); | |
7441 | status = -EINVAL; | |
6b55970b | 7442 | goto out_impl_id; |
2031cd1a | 7443 | } |
ad0849a7 AA |
7444 | if (xprt) { |
7445 | calldata->xprt = xprt; | |
7446 | task_setup_data.rpc_xprt = xprt; | |
7447 | task_setup_data.flags = | |
7448 | RPC_TASK_SOFT|RPC_TASK_SOFTCONN|RPC_TASK_ASYNC; | |
7449 | calldata->args.verifier = &clp->cl_confirm; | |
7450 | } else { | |
7451 | calldata->args.verifier = &verifier; | |
7452 | } | |
8d89bd70 AA |
7453 | calldata->args.client = clp; |
7454 | #ifdef CONFIG_NFS_V4_1_MIGRATION | |
7455 | calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
7456 | EXCHGID4_FLAG_BIND_PRINC_STATEID | | |
7457 | EXCHGID4_FLAG_SUPP_MOVED_MIGR, | |
7458 | #else | |
7459 | calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | | |
7460 | EXCHGID4_FLAG_BIND_PRINC_STATEID, | |
7461 | #endif | |
7462 | msg.rpc_argp = &calldata->args; | |
7463 | msg.rpc_resp = &calldata->res; | |
7464 | task_setup_data.callback_data = calldata; | |
78fe0f41 | 7465 | |
8d89bd70 AA |
7466 | task = rpc_run_task(&task_setup_data); |
7467 | if (IS_ERR(task)) { | |
7468 | status = PTR_ERR(task); | |
7469 | goto out_impl_id; | |
6b55970b | 7470 | } |
7d2ed9ac | 7471 | |
ad0849a7 AA |
7472 | if (!xprt) { |
7473 | status = rpc_wait_for_completion_task(task); | |
7474 | if (!status) | |
7475 | status = calldata->rpc_status; | |
7476 | } else /* session trunking test */ | |
8d89bd70 | 7477 | status = calldata->rpc_status; |
ad0849a7 | 7478 | |
8d89bd70 | 7479 | rpc_put_task(task); |
abe9a6d5 | 7480 | out: |
177313f1 | 7481 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 7482 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 7483 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 7484 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
7485 | clp->cl_implid->date.seconds, |
7486 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 7487 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 | 7488 | return status; |
8d89bd70 AA |
7489 | |
7490 | out_impl_id: | |
7491 | kfree(calldata->res.impl_id); | |
7492 | out_server_scope: | |
7493 | kfree(calldata->res.server_scope); | |
7494 | out_server_owner: | |
7495 | kfree(calldata->res.server_owner); | |
7496 | out_calldata: | |
7497 | kfree(calldata); | |
7498 | goto out; | |
99fe60d0 BH |
7499 | } |
7500 | ||
2031cd1a WAA |
7501 | /* |
7502 | * nfs4_proc_exchange_id() | |
7503 | * | |
7504 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
7505 | * | |
7506 | * Since the clientid has expired, all compounds using sessions | |
7507 | * associated with the stale clientid will be returning | |
7508 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
7509 | * be in some phase of session reset. | |
7510 | * | |
7511 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
7512 | */ | |
7513 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
7514 | { | |
7515 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
7516 | int status; | |
7517 | ||
7518 | /* try SP4_MACH_CRED if krb5i/p */ | |
7519 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
7520 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
ad0849a7 | 7521 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED, NULL); |
2031cd1a WAA |
7522 | if (!status) |
7523 | return 0; | |
7524 | } | |
7525 | ||
7526 | /* try SP4_NONE */ | |
ad0849a7 | 7527 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE, NULL); |
2031cd1a WAA |
7528 | } |
7529 | ||
04fa2c6b AA |
7530 | /** |
7531 | * nfs4_test_session_trunk | |
7532 | * | |
7533 | * This is an add_xprt_test() test function called from | |
7534 | * rpc_clnt_setup_test_and_add_xprt. | |
7535 | * | |
7536 | * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt | |
7537 | * and is dereferrenced in nfs4_exchange_id_release | |
7538 | * | |
7539 | * Upon success, add the new transport to the rpc_clnt | |
7540 | * | |
7541 | * @clnt: struct rpc_clnt to get new transport | |
7542 | * @xprt: the rpc_xprt to test | |
7543 | * @data: call data for _nfs4_proc_exchange_id. | |
7544 | */ | |
7545 | int nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt, | |
7546 | void *data) | |
7547 | { | |
7548 | struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data; | |
7549 | u32 sp4_how; | |
7550 | ||
7551 | dprintk("--> %s try %s\n", __func__, | |
7552 | xprt->address_strings[RPC_DISPLAY_ADDR]); | |
7553 | ||
7554 | sp4_how = (adata->clp->cl_sp4_flags == 0 ? SP4_NONE : SP4_MACH_CRED); | |
7555 | ||
7556 | /* Test connection for session trunking. Async exchange_id call */ | |
7557 | return _nfs4_proc_exchange_id(adata->clp, adata->cred, sp4_how, xprt); | |
7558 | } | |
7559 | EXPORT_SYMBOL_GPL(nfs4_test_session_trunk); | |
7560 | ||
66245539 TM |
7561 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
7562 | struct rpc_cred *cred) | |
7563 | { | |
7564 | struct rpc_message msg = { | |
7565 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
7566 | .rpc_argp = clp, | |
7567 | .rpc_cred = cred, | |
7568 | }; | |
7569 | int status; | |
7570 | ||
7571 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
c6d01c6f | 7572 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 7573 | if (status) |
02c67525 | 7574 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
7575 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
7576 | return status; | |
7577 | } | |
7578 | ||
7579 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
7580 | struct rpc_cred *cred) | |
7581 | { | |
7582 | unsigned int loop; | |
7583 | int ret; | |
7584 | ||
7585 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
7586 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
7587 | switch (ret) { | |
7588 | case -NFS4ERR_DELAY: | |
7589 | case -NFS4ERR_CLIENTID_BUSY: | |
7590 | ssleep(1); | |
7591 | break; | |
7592 | default: | |
7593 | return ret; | |
7594 | } | |
7595 | } | |
7596 | return 0; | |
7597 | } | |
7598 | ||
7599 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
7600 | { | |
7601 | struct rpc_cred *cred; | |
7602 | int ret = 0; | |
7603 | ||
7604 | if (clp->cl_mvops->minor_version < 1) | |
7605 | goto out; | |
7606 | if (clp->cl_exchange_flags == 0) | |
7607 | goto out; | |
05f4c350 CL |
7608 | if (clp->cl_preserve_clid) |
7609 | goto out; | |
73d8bde5 | 7610 | cred = nfs4_get_clid_cred(clp); |
66245539 TM |
7611 | ret = nfs4_proc_destroy_clientid(clp, cred); |
7612 | if (cred) | |
7613 | put_rpccred(cred); | |
7614 | switch (ret) { | |
7615 | case 0: | |
7616 | case -NFS4ERR_STALE_CLIENTID: | |
7617 | clp->cl_exchange_flags = 0; | |
7618 | } | |
7619 | out: | |
7620 | return ret; | |
7621 | } | |
7622 | ||
2050f0cc AA |
7623 | struct nfs4_get_lease_time_data { |
7624 | struct nfs4_get_lease_time_args *args; | |
7625 | struct nfs4_get_lease_time_res *res; | |
7626 | struct nfs_client *clp; | |
7627 | }; | |
7628 | ||
7629 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
7630 | void *calldata) | |
7631 | { | |
2050f0cc AA |
7632 | struct nfs4_get_lease_time_data *data = |
7633 | (struct nfs4_get_lease_time_data *)calldata; | |
7634 | ||
7635 | dprintk("--> %s\n", __func__); | |
7636 | /* just setup sequence, do not trigger session recovery | |
7637 | since we're invoked within one */ | |
d9afbd1b TM |
7638 | nfs41_setup_sequence(data->clp->cl_session, |
7639 | &data->args->la_seq_args, | |
7640 | &data->res->lr_seq_res, | |
7641 | task); | |
2050f0cc AA |
7642 | dprintk("<-- %s\n", __func__); |
7643 | } | |
7644 | ||
7645 | /* | |
7646 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
7647 | * from sequence operation or clientid errors. | |
7648 | */ | |
7649 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
7650 | { | |
7651 | struct nfs4_get_lease_time_data *data = | |
7652 | (struct nfs4_get_lease_time_data *)calldata; | |
7653 | ||
7654 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
7655 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
7656 | return; | |
2050f0cc AA |
7657 | switch (task->tk_status) { |
7658 | case -NFS4ERR_DELAY: | |
7659 | case -NFS4ERR_GRACE: | |
7660 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
7661 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
7662 | task->tk_status = 0; | |
a8a4ae3a AA |
7663 | /* fall through */ |
7664 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 7665 | rpc_restart_call_prepare(task); |
2050f0cc AA |
7666 | return; |
7667 | } | |
2050f0cc AA |
7668 | dprintk("<-- %s\n", __func__); |
7669 | } | |
7670 | ||
17280175 | 7671 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
7672 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
7673 | .rpc_call_done = nfs4_get_lease_time_done, | |
7674 | }; | |
7675 | ||
7676 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
7677 | { | |
7678 | struct rpc_task *task; | |
7679 | struct nfs4_get_lease_time_args args; | |
7680 | struct nfs4_get_lease_time_res res = { | |
7681 | .lr_fsinfo = fsinfo, | |
7682 | }; | |
7683 | struct nfs4_get_lease_time_data data = { | |
7684 | .args = &args, | |
7685 | .res = &res, | |
7686 | .clp = clp, | |
7687 | }; | |
7688 | struct rpc_message msg = { | |
7689 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
7690 | .rpc_argp = &args, | |
7691 | .rpc_resp = &res, | |
7692 | }; | |
7693 | struct rpc_task_setup task_setup = { | |
7694 | .rpc_client = clp->cl_rpcclient, | |
7695 | .rpc_message = &msg, | |
7696 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
7697 | .callback_data = &data, |
7698 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
7699 | }; |
7700 | int status; | |
7701 | ||
a9c92d6b | 7702 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
8fe72bac | 7703 | nfs4_set_sequence_privileged(&args.la_seq_args); |
2050f0cc AA |
7704 | dprintk("--> %s\n", __func__); |
7705 | task = rpc_run_task(&task_setup); | |
7706 | ||
7707 | if (IS_ERR(task)) | |
7708 | status = PTR_ERR(task); | |
7709 | else { | |
7710 | status = task->tk_status; | |
7711 | rpc_put_task(task); | |
7712 | } | |
7713 | dprintk("<-- %s return %d\n", __func__, status); | |
7714 | ||
7715 | return status; | |
7716 | } | |
7717 | ||
fc931582 AA |
7718 | /* |
7719 | * Initialize the values to be used by the client in CREATE_SESSION | |
7720 | * If nfs4_init_session set the fore channel request and response sizes, | |
7721 | * use them. | |
7722 | * | |
7723 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
7724 | * always set csa_cachethis to FALSE because the current implementation | |
7725 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
7726 | */ | |
6b26cc8c CL |
7727 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, |
7728 | struct rpc_clnt *clnt) | |
fc931582 | 7729 | { |
18aad3d5 | 7730 | unsigned int max_rqst_sz, max_resp_sz; |
6b26cc8c | 7731 | unsigned int max_bc_payload = rpc_max_bc_payload(clnt); |
18aad3d5 AA |
7732 | |
7733 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
7734 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 7735 | |
fc931582 | 7736 | /* Fore channel attributes */ |
18aad3d5 AA |
7737 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
7738 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 7739 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 7740 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
7741 | |
7742 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 7743 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
7744 | __func__, |
7745 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 7746 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
7747 | |
7748 | /* Back channel attributes */ | |
6b26cc8c CL |
7749 | args->bc_attrs.max_rqst_sz = max_bc_payload; |
7750 | args->bc_attrs.max_resp_sz = max_bc_payload; | |
fc931582 AA |
7751 | args->bc_attrs.max_resp_sz_cached = 0; |
7752 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5405fc44 | 7753 | args->bc_attrs.max_reqs = min_t(unsigned short, max_session_cb_slots, 1); |
fc931582 AA |
7754 | |
7755 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
7756 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
7757 | __func__, | |
7758 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
7759 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
7760 | args->bc_attrs.max_reqs); | |
7761 | } | |
7762 | ||
79969dd1 TM |
7763 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
7764 | struct nfs41_create_session_res *res) | |
8d35301d | 7765 | { |
43c2e885 | 7766 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 7767 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 7768 | |
43c2e885 BF |
7769 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
7770 | return -EINVAL; | |
7771 | /* | |
7772 | * Our requested max_ops is the minimum we need; we're not | |
7773 | * prepared to break up compounds into smaller pieces than that. | |
7774 | * So, no point even trying to continue if the server won't | |
7775 | * cooperate: | |
7776 | */ | |
7777 | if (rcvd->max_ops < sent->max_ops) | |
7778 | return -EINVAL; | |
7779 | if (rcvd->max_reqs == 0) | |
7780 | return -EINVAL; | |
b4b9a0c1 VG |
7781 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
7782 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 7783 | return 0; |
8d35301d AA |
7784 | } |
7785 | ||
79969dd1 TM |
7786 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
7787 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
7788 | { |
7789 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 7790 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 7791 | |
b1c0df5f TM |
7792 | if (!(res->flags & SESSION4_BACK_CHAN)) |
7793 | goto out; | |
43c2e885 BF |
7794 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
7795 | return -EINVAL; | |
7796 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
7797 | return -EINVAL; | |
7798 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
7799 | return -EINVAL; | |
5405fc44 | 7800 | if (rcvd->max_ops > sent->max_ops) |
43c2e885 | 7801 | return -EINVAL; |
5405fc44 | 7802 | if (rcvd->max_reqs > sent->max_reqs) |
43c2e885 | 7803 | return -EINVAL; |
b1c0df5f | 7804 | out: |
43c2e885 BF |
7805 | return 0; |
7806 | } | |
8d35301d | 7807 | |
8d35301d | 7808 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 7809 | struct nfs41_create_session_res *res) |
8d35301d | 7810 | { |
43c2e885 | 7811 | int ret; |
8d35301d | 7812 | |
79969dd1 | 7813 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
7814 | if (ret) |
7815 | return ret; | |
79969dd1 TM |
7816 | return nfs4_verify_back_channel_attrs(args, res); |
7817 | } | |
7818 | ||
7819 | static void nfs4_update_session(struct nfs4_session *session, | |
7820 | struct nfs41_create_session_res *res) | |
7821 | { | |
7822 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
7823 | /* Mark client id and session as being confirmed */ |
7824 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
7825 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
7826 | session->flags = res->flags; |
7827 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
7828 | if (res->flags & SESSION4_BACK_CHAN) |
7829 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
7830 | sizeof(session->bc_attrs)); | |
8d35301d AA |
7831 | } |
7832 | ||
848f5bda TM |
7833 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
7834 | struct rpc_cred *cred) | |
fc931582 AA |
7835 | { |
7836 | struct nfs4_session *session = clp->cl_session; | |
7837 | struct nfs41_create_session_args args = { | |
7838 | .client = clp, | |
79969dd1 TM |
7839 | .clientid = clp->cl_clientid, |
7840 | .seqid = clp->cl_seqid, | |
fc931582 AA |
7841 | .cb_program = NFS4_CALLBACK, |
7842 | }; | |
79969dd1 TM |
7843 | struct nfs41_create_session_res res; |
7844 | ||
fc931582 AA |
7845 | struct rpc_message msg = { |
7846 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
7847 | .rpc_argp = &args, | |
7848 | .rpc_resp = &res, | |
848f5bda | 7849 | .rpc_cred = cred, |
fc931582 AA |
7850 | }; |
7851 | int status; | |
7852 | ||
6b26cc8c | 7853 | nfs4_init_channel_attrs(&args, clp->cl_rpcclient); |
0f91421e | 7854 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 7855 | |
1bd714f2 | 7856 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7857 | trace_nfs4_create_session(clp, status); |
fc931582 | 7858 | |
b519d408 TM |
7859 | switch (status) { |
7860 | case -NFS4ERR_STALE_CLIENTID: | |
7861 | case -NFS4ERR_DELAY: | |
7862 | case -ETIMEDOUT: | |
7863 | case -EACCES: | |
7864 | case -EAGAIN: | |
7865 | goto out; | |
7866 | }; | |
7867 | ||
7868 | clp->cl_seqid++; | |
43095d39 | 7869 | if (!status) { |
8d35301d | 7870 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 7871 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 7872 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
7873 | if (status) |
7874 | goto out; | |
7875 | nfs4_update_session(session, &res); | |
fc931582 | 7876 | } |
79969dd1 | 7877 | out: |
fc931582 AA |
7878 | return status; |
7879 | } | |
7880 | ||
7881 | /* | |
7882 | * Issues a CREATE_SESSION operation to the server. | |
7883 | * It is the responsibility of the caller to verify the session is | |
7884 | * expired before calling this routine. | |
7885 | */ | |
848f5bda | 7886 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
7887 | { |
7888 | int status; | |
7889 | unsigned *ptr; | |
fc931582 AA |
7890 | struct nfs4_session *session = clp->cl_session; |
7891 | ||
7892 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
7893 | ||
848f5bda | 7894 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
7895 | if (status) |
7896 | goto out; | |
7897 | ||
aacd5537 AA |
7898 | /* Init or reset the session slot tables */ |
7899 | status = nfs4_setup_session_slot_tables(session); | |
7900 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
7901 | if (status) |
7902 | goto out; | |
7903 | ||
7904 | ptr = (unsigned *)&session->sess_id.data[0]; | |
7905 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
7906 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
7907 | out: |
7908 | dprintk("<-- %s\n", __func__); | |
7909 | return status; | |
7910 | } | |
7911 | ||
0f3e66c6 AA |
7912 | /* |
7913 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
7914 | * The caller must serialize access to this routine. | |
7915 | */ | |
848f5bda TM |
7916 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
7917 | struct rpc_cred *cred) | |
0f3e66c6 | 7918 | { |
848f5bda TM |
7919 | struct rpc_message msg = { |
7920 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
7921 | .rpc_argp = session, | |
7922 | .rpc_cred = cred, | |
7923 | }; | |
0f3e66c6 | 7924 | int status = 0; |
0f3e66c6 AA |
7925 | |
7926 | dprintk("--> nfs4_proc_destroy_session\n"); | |
7927 | ||
7928 | /* session is still being setup */ | |
e11259f9 TM |
7929 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
7930 | return 0; | |
0f3e66c6 | 7931 | |
1bd714f2 | 7932 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c6d01c6f | 7933 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
7934 | |
7935 | if (status) | |
08106ac7 | 7936 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
7937 | "Session has been destroyed regardless...\n", status); |
7938 | ||
7939 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
7940 | return status; | |
7941 | } | |
7942 | ||
fc01cea9 AA |
7943 | /* |
7944 | * Renew the cl_session lease. | |
7945 | */ | |
d5f8d3fe TM |
7946 | struct nfs4_sequence_data { |
7947 | struct nfs_client *clp; | |
7948 | struct nfs4_sequence_args args; | |
7949 | struct nfs4_sequence_res res; | |
7950 | }; | |
7951 | ||
dc96aef9 AB |
7952 | static void nfs41_sequence_release(void *data) |
7953 | { | |
d5f8d3fe TM |
7954 | struct nfs4_sequence_data *calldata = data; |
7955 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 7956 | |
7135840f AB |
7957 | if (atomic_read(&clp->cl_count) > 1) |
7958 | nfs4_schedule_state_renewal(clp); | |
7959 | nfs_put_client(clp); | |
d5f8d3fe | 7960 | kfree(calldata); |
dc96aef9 AB |
7961 | } |
7962 | ||
aa5190d0 TM |
7963 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
7964 | { | |
7965 | switch(task->tk_status) { | |
7966 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
7967 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
7968 | return -EAGAIN; | |
7969 | default: | |
0400a6b0 | 7970 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
7971 | } |
7972 | return 0; | |
7973 | } | |
7974 | ||
dc96aef9 | 7975 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 7976 | { |
d5f8d3fe TM |
7977 | struct nfs4_sequence_data *calldata = data; |
7978 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 7979 | |
14516c3a TM |
7980 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
7981 | return; | |
fc01cea9 | 7982 | |
c6d01c6f | 7983 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
7984 | if (task->tk_status < 0) { |
7985 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
7986 | if (atomic_read(&clp->cl_count) == 1) |
7987 | goto out; | |
fc01cea9 | 7988 | |
aa5190d0 TM |
7989 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
7990 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
7991 | return; |
7992 | } | |
7993 | } | |
fc01cea9 | 7994 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 7995 | out: |
fc01cea9 AA |
7996 | dprintk("<-- %s\n", __func__); |
7997 | } | |
7998 | ||
7999 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
8000 | { | |
d5f8d3fe TM |
8001 | struct nfs4_sequence_data *calldata = data; |
8002 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
8003 | struct nfs4_sequence_args *args; |
8004 | struct nfs4_sequence_res *res; | |
8005 | ||
fc01cea9 AA |
8006 | args = task->tk_msg.rpc_argp; |
8007 | res = task->tk_msg.rpc_resp; | |
8008 | ||
d9afbd1b | 8009 | nfs41_setup_sequence(clp->cl_session, args, res, task); |
fc01cea9 AA |
8010 | } |
8011 | ||
8012 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
8013 | .rpc_call_done = nfs41_sequence_call_done, | |
8014 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 8015 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
8016 | }; |
8017 | ||
8fe72bac TM |
8018 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
8019 | struct rpc_cred *cred, | |
8020 | bool is_privileged) | |
fc01cea9 | 8021 | { |
d5f8d3fe | 8022 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
8023 | struct rpc_message msg = { |
8024 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
8025 | .rpc_cred = cred, | |
8026 | }; | |
71ac6da9 TM |
8027 | struct rpc_task_setup task_setup_data = { |
8028 | .rpc_client = clp->cl_rpcclient, | |
8029 | .rpc_message = &msg, | |
8fe72bac | 8030 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 8031 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 8032 | }; |
fc01cea9 | 8033 | |
7135840f | 8034 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 8035 | return ERR_PTR(-EIO); |
dfb4f309 | 8036 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 8037 | if (calldata == NULL) { |
7135840f | 8038 | nfs_put_client(clp); |
71ac6da9 | 8039 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 8040 | } |
a9c92d6b | 8041 | nfs4_init_sequence(&calldata->args, &calldata->res, 0); |
8fe72bac TM |
8042 | if (is_privileged) |
8043 | nfs4_set_sequence_privileged(&calldata->args); | |
d5f8d3fe TM |
8044 | msg.rpc_argp = &calldata->args; |
8045 | msg.rpc_resp = &calldata->res; | |
8046 | calldata->clp = clp; | |
71ac6da9 | 8047 | task_setup_data.callback_data = calldata; |
fc01cea9 | 8048 | |
71ac6da9 TM |
8049 | return rpc_run_task(&task_setup_data); |
8050 | } | |
8051 | ||
2f60ea6b | 8052 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
8053 | { |
8054 | struct rpc_task *task; | |
8055 | int ret = 0; | |
8056 | ||
2f60ea6b | 8057 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 8058 | return -EAGAIN; |
8fe72bac | 8059 | task = _nfs41_proc_sequence(clp, cred, false); |
71ac6da9 TM |
8060 | if (IS_ERR(task)) |
8061 | ret = PTR_ERR(task); | |
8062 | else | |
bf294b41 | 8063 | rpc_put_task_async(task); |
71ac6da9 TM |
8064 | dprintk("<-- %s status=%d\n", __func__, ret); |
8065 | return ret; | |
8066 | } | |
8067 | ||
8068 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
8069 | { | |
8070 | struct rpc_task *task; | |
8071 | int ret; | |
8072 | ||
8fe72bac | 8073 | task = _nfs41_proc_sequence(clp, cred, true); |
71ac6da9 TM |
8074 | if (IS_ERR(task)) { |
8075 | ret = PTR_ERR(task); | |
8076 | goto out; | |
8077 | } | |
8078 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 8079 | if (!ret) |
71ac6da9 TM |
8080 | ret = task->tk_status; |
8081 | rpc_put_task(task); | |
8082 | out: | |
8083 | dprintk("<-- %s status=%d\n", __func__, ret); | |
8084 | return ret; | |
fc01cea9 AA |
8085 | } |
8086 | ||
fce5c838 RL |
8087 | struct nfs4_reclaim_complete_data { |
8088 | struct nfs_client *clp; | |
8089 | struct nfs41_reclaim_complete_args arg; | |
8090 | struct nfs41_reclaim_complete_res res; | |
8091 | }; | |
8092 | ||
8093 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
8094 | { | |
8095 | struct nfs4_reclaim_complete_data *calldata = data; | |
8096 | ||
d9afbd1b TM |
8097 | nfs41_setup_sequence(calldata->clp->cl_session, |
8098 | &calldata->arg.seq_args, | |
8099 | &calldata->res.seq_res, | |
8100 | task); | |
fce5c838 RL |
8101 | } |
8102 | ||
aa5190d0 TM |
8103 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
8104 | { | |
8105 | switch(task->tk_status) { | |
8106 | case 0: | |
8107 | case -NFS4ERR_COMPLETE_ALREADY: | |
8108 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
8109 | break; | |
8110 | case -NFS4ERR_DELAY: | |
aa5190d0 | 8111 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
8112 | /* fall through */ |
8113 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
8114 | return -EAGAIN; |
8115 | default: | |
0400a6b0 | 8116 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
8117 | } |
8118 | return 0; | |
8119 | } | |
8120 | ||
fce5c838 RL |
8121 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
8122 | { | |
8123 | struct nfs4_reclaim_complete_data *calldata = data; | |
8124 | struct nfs_client *clp = calldata->clp; | |
8125 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
8126 | ||
8127 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
8128 | if (!nfs41_sequence_done(task, res)) |
8129 | return; | |
fce5c838 | 8130 | |
c6d01c6f | 8131 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
8132 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
8133 | rpc_restart_call_prepare(task); | |
8134 | return; | |
8135 | } | |
fce5c838 RL |
8136 | dprintk("<-- %s\n", __func__); |
8137 | } | |
8138 | ||
8139 | static void nfs4_free_reclaim_complete_data(void *data) | |
8140 | { | |
8141 | struct nfs4_reclaim_complete_data *calldata = data; | |
8142 | ||
8143 | kfree(calldata); | |
8144 | } | |
8145 | ||
8146 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
8147 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
8148 | .rpc_call_done = nfs4_reclaim_complete_done, | |
8149 | .rpc_release = nfs4_free_reclaim_complete_data, | |
8150 | }; | |
8151 | ||
8152 | /* | |
8153 | * Issue a global reclaim complete. | |
8154 | */ | |
965e9c23 TM |
8155 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
8156 | struct rpc_cred *cred) | |
fce5c838 RL |
8157 | { |
8158 | struct nfs4_reclaim_complete_data *calldata; | |
8159 | struct rpc_task *task; | |
8160 | struct rpc_message msg = { | |
8161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 8162 | .rpc_cred = cred, |
fce5c838 RL |
8163 | }; |
8164 | struct rpc_task_setup task_setup_data = { | |
8165 | .rpc_client = clp->cl_rpcclient, | |
8166 | .rpc_message = &msg, | |
8167 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
8168 | .flags = RPC_TASK_ASYNC, | |
8169 | }; | |
8170 | int status = -ENOMEM; | |
8171 | ||
8172 | dprintk("--> %s\n", __func__); | |
8535b2be | 8173 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
8174 | if (calldata == NULL) |
8175 | goto out; | |
8176 | calldata->clp = clp; | |
8177 | calldata->arg.one_fs = 0; | |
fce5c838 | 8178 | |
a9c92d6b | 8179 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
8fe72bac | 8180 | nfs4_set_sequence_privileged(&calldata->arg.seq_args); |
fce5c838 RL |
8181 | msg.rpc_argp = &calldata->arg; |
8182 | msg.rpc_resp = &calldata->res; | |
8183 | task_setup_data.callback_data = calldata; | |
8184 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 8185 | if (IS_ERR(task)) { |
fce5c838 | 8186 | status = PTR_ERR(task); |
acf82b85 DC |
8187 | goto out; |
8188 | } | |
c34c32ea AA |
8189 | status = nfs4_wait_for_completion_rpc_task(task); |
8190 | if (status == 0) | |
8191 | status = task->tk_status; | |
fce5c838 | 8192 | rpc_put_task(task); |
acf82b85 | 8193 | return 0; |
fce5c838 RL |
8194 | out: |
8195 | dprintk("<-- %s status=%d\n", __func__, status); | |
8196 | return status; | |
8197 | } | |
b1f69b75 AA |
8198 | |
8199 | static void | |
8200 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
8201 | { | |
8202 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 8203 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6ba7db34 | 8204 | struct nfs4_session *session = nfs4_get_session(server); |
b1f69b75 AA |
8205 | |
8206 | dprintk("--> %s\n", __func__); | |
183d9e7b JL |
8207 | nfs41_setup_sequence(session, &lgp->args.seq_args, |
8208 | &lgp->res.seq_res, task); | |
8209 | dprintk("<-- %s\n", __func__); | |
b1f69b75 AA |
8210 | } |
8211 | ||
8212 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
8213 | { | |
8214 | struct nfs4_layoutget *lgp = calldata; | |
183d9e7b JL |
8215 | |
8216 | dprintk("--> %s\n", __func__); | |
2e80dbe7 | 8217 | nfs41_sequence_process(task, &lgp->res.seq_res); |
183d9e7b JL |
8218 | dprintk("<-- %s\n", __func__); |
8219 | } | |
8220 | ||
8221 | static int | |
8222 | nfs4_layoutget_handle_exception(struct rpc_task *task, | |
8223 | struct nfs4_layoutget *lgp, struct nfs4_exception *exception) | |
8224 | { | |
ee314c2a TM |
8225 | struct inode *inode = lgp->args.inode; |
8226 | struct nfs_server *server = NFS_SERVER(inode); | |
8227 | struct pnfs_layout_hdr *lo; | |
e85d7ee4 TM |
8228 | int nfs4err = task->tk_status; |
8229 | int err, status = 0; | |
f7db0b28 | 8230 | LIST_HEAD(head); |
b1f69b75 | 8231 | |
ed7e5423 | 8232 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 8233 | |
e85d7ee4 | 8234 | switch (nfs4err) { |
b1f69b75 | 8235 | case 0: |
ee314c2a | 8236 | goto out; |
7c1e6e58 PT |
8237 | |
8238 | /* | |
8239 | * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs | |
8240 | * on the file. set tk_status to -ENODATA to tell upper layer to | |
8241 | * retry go inband. | |
8242 | */ | |
8243 | case -NFS4ERR_LAYOUTUNAVAILABLE: | |
183d9e7b | 8244 | status = -ENODATA; |
7c1e6e58 | 8245 | goto out; |
21b874c8 TM |
8246 | /* |
8247 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
8248 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
8249 | */ | |
8250 | case -NFS4ERR_BADLAYOUT: | |
183d9e7b JL |
8251 | status = -EOVERFLOW; |
8252 | goto out; | |
ed7e5423 BH |
8253 | /* |
8254 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
8255 | * (or clients) writing to the same RAID stripe except when |
8256 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
183d9e7b JL |
8257 | * |
8258 | * Treat it like we would RECALLCONFLICT -- we retry for a little | |
8259 | * while, and then eventually give up. | |
ed7e5423 | 8260 | */ |
b1f69b75 | 8261 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b JL |
8262 | if (lgp->args.minlength == 0) { |
8263 | status = -EOVERFLOW; | |
8264 | goto out; | |
ed7e5423 | 8265 | } |
e85d7ee4 TM |
8266 | status = -EBUSY; |
8267 | break; | |
183d9e7b | 8268 | case -NFS4ERR_RECALLCONFLICT: |
183d9e7b | 8269 | status = -ERECALLCONFLICT; |
e85d7ee4 | 8270 | break; |
26f47443 TM |
8271 | case -NFS4ERR_DELEG_REVOKED: |
8272 | case -NFS4ERR_ADMIN_REVOKED: | |
ee314c2a TM |
8273 | case -NFS4ERR_EXPIRED: |
8274 | case -NFS4ERR_BAD_STATEID: | |
183d9e7b | 8275 | exception->timeout = 0; |
ee314c2a | 8276 | spin_lock(&inode->i_lock); |
f7db0b28 TM |
8277 | lo = NFS_I(inode)->layout; |
8278 | /* If the open stateid was bad, then recover it. */ | |
8279 | if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) || | |
8280 | nfs4_stateid_match_other(&lgp->args.stateid, | |
2259f960 | 8281 | &lgp->args.ctx->state->stateid)) { |
ee314c2a | 8282 | spin_unlock(&inode->i_lock); |
183d9e7b | 8283 | exception->state = lgp->args.ctx->state; |
26f47443 | 8284 | exception->stateid = &lgp->args.stateid; |
2259f960 TM |
8285 | break; |
8286 | } | |
f7db0b28 TM |
8287 | |
8288 | /* | |
8289 | * Mark the bad layout state as invalid, then retry | |
8290 | */ | |
668f455d | 8291 | pnfs_mark_layout_stateid_invalid(lo, &head); |
f7db0b28 TM |
8292 | spin_unlock(&inode->i_lock); |
8293 | pnfs_free_lseg_list(&head); | |
8294 | status = -EAGAIN; | |
8295 | goto out; | |
b1f69b75 | 8296 | } |
183d9e7b | 8297 | |
e85d7ee4 TM |
8298 | err = nfs4_handle_exception(server, nfs4err, exception); |
8299 | if (!status) { | |
8300 | if (exception->retry) | |
8301 | status = -EAGAIN; | |
8302 | else | |
8303 | status = err; | |
8304 | } | |
ee314c2a | 8305 | out: |
b1f69b75 | 8306 | dprintk("<-- %s\n", __func__); |
183d9e7b | 8307 | return status; |
b1f69b75 AA |
8308 | } |
8309 | ||
8554116e IK |
8310 | static size_t max_response_pages(struct nfs_server *server) |
8311 | { | |
8312 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
8313 | return nfs_page_array_len(0, max_resp_sz); | |
8314 | } | |
8315 | ||
8316 | static void nfs4_free_pages(struct page **pages, size_t size) | |
8317 | { | |
8318 | int i; | |
8319 | ||
8320 | if (!pages) | |
8321 | return; | |
8322 | ||
8323 | for (i = 0; i < size; i++) { | |
8324 | if (!pages[i]) | |
8325 | break; | |
8326 | __free_page(pages[i]); | |
8327 | } | |
8328 | kfree(pages); | |
8329 | } | |
8330 | ||
8331 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
8332 | { | |
8333 | struct page **pages; | |
8334 | int i; | |
8335 | ||
8336 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
8337 | if (!pages) { | |
8338 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
8339 | return NULL; | |
8340 | } | |
8341 | ||
8342 | for (i = 0; i < size; i++) { | |
8343 | pages[i] = alloc_page(gfp_flags); | |
8344 | if (!pages[i]) { | |
8345 | dprintk("%s: failed to allocate page\n", __func__); | |
8346 | nfs4_free_pages(pages, size); | |
8347 | return NULL; | |
8348 | } | |
8349 | } | |
8350 | ||
8351 | return pages; | |
8352 | } | |
8353 | ||
b1f69b75 AA |
8354 | static void nfs4_layoutget_release(void *calldata) |
8355 | { | |
8356 | struct nfs4_layoutget *lgp = calldata; | |
a47970ff WAA |
8357 | struct inode *inode = lgp->args.inode; |
8358 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8359 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8360 | |
8361 | dprintk("--> %s\n", __func__); | |
8554116e | 8362 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
a47970ff | 8363 | pnfs_put_layout_hdr(NFS_I(inode)->layout); |
b1f69b75 AA |
8364 | put_nfs_open_context(lgp->args.ctx); |
8365 | kfree(calldata); | |
8366 | dprintk("<-- %s\n", __func__); | |
8367 | } | |
8368 | ||
8369 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
8370 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
8371 | .rpc_call_done = nfs4_layoutget_done, | |
8372 | .rpc_release = nfs4_layoutget_release, | |
8373 | }; | |
8374 | ||
a0b0a6e3 | 8375 | struct pnfs_layout_segment * |
183d9e7b | 8376 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) |
b1f69b75 | 8377 | { |
a47970ff WAA |
8378 | struct inode *inode = lgp->args.inode; |
8379 | struct nfs_server *server = NFS_SERVER(inode); | |
8554116e | 8380 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
8381 | struct rpc_task *task; |
8382 | struct rpc_message msg = { | |
8383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
8384 | .rpc_argp = &lgp->args, | |
8385 | .rpc_resp = &lgp->res, | |
6ab59344 | 8386 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
8387 | }; |
8388 | struct rpc_task_setup task_setup_data = { | |
8389 | .rpc_client = server->client, | |
8390 | .rpc_message = &msg, | |
8391 | .callback_ops = &nfs4_layoutget_call_ops, | |
8392 | .callback_data = lgp, | |
8393 | .flags = RPC_TASK_ASYNC, | |
8394 | }; | |
a0b0a6e3 | 8395 | struct pnfs_layout_segment *lseg = NULL; |
bc23676c TM |
8396 | struct nfs4_exception exception = { |
8397 | .inode = inode, | |
8398 | .timeout = *timeout, | |
8399 | }; | |
b1f69b75 AA |
8400 | int status = 0; |
8401 | ||
8402 | dprintk("--> %s\n", __func__); | |
8403 | ||
4bd5a980 PT |
8404 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
8405 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
8406 | ||
8554116e IK |
8407 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
8408 | if (!lgp->args.layout.pages) { | |
8409 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 8410 | return ERR_PTR(-ENOMEM); |
8554116e IK |
8411 | } |
8412 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
8413 | ||
35124a09 | 8414 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 8415 | lgp->res.seq_res.sr_slot = NULL; |
a9c92d6b | 8416 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
a47970ff | 8417 | |
b1f69b75 AA |
8418 | task = rpc_run_task(&task_setup_data); |
8419 | if (IS_ERR(task)) | |
a0b0a6e3 | 8420 | return ERR_CAST(task); |
b1f69b75 | 8421 | status = nfs4_wait_for_completion_rpc_task(task); |
183d9e7b JL |
8422 | if (status == 0) { |
8423 | status = nfs4_layoutget_handle_exception(task, lgp, &exception); | |
8424 | *timeout = exception.timeout; | |
8425 | } | |
8426 | ||
1037e6ea TM |
8427 | trace_nfs4_layoutget(lgp->args.ctx, |
8428 | &lgp->args.range, | |
8429 | &lgp->res.range, | |
48c9579a | 8430 | &lgp->res.stateid, |
1037e6ea | 8431 | status); |
183d9e7b | 8432 | |
085b7a45 WAA |
8433 | /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */ |
8434 | if (status == 0 && lgp->res.layoutp->len) | |
a0b0a6e3 | 8435 | lseg = pnfs_layout_process(lgp); |
2e80dbe7 | 8436 | nfs4_sequence_free_slot(&lgp->res.seq_res); |
b1f69b75 AA |
8437 | rpc_put_task(task); |
8438 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
8439 | if (status) |
8440 | return ERR_PTR(status); | |
8441 | return lseg; | |
b1f69b75 AA |
8442 | } |
8443 | ||
cbe82603 BH |
8444 | static void |
8445 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
8446 | { | |
8447 | struct nfs4_layoutreturn *lrp = calldata; | |
8448 | ||
8449 | dprintk("--> %s\n", __func__); | |
d9afbd1b TM |
8450 | nfs41_setup_sequence(lrp->clp->cl_session, |
8451 | &lrp->args.seq_args, | |
8452 | &lrp->res.seq_res, | |
8453 | task); | |
cbe82603 BH |
8454 | } |
8455 | ||
8456 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
8457 | { | |
8458 | struct nfs4_layoutreturn *lrp = calldata; | |
8459 | struct nfs_server *server; | |
8460 | ||
8461 | dprintk("--> %s\n", __func__); | |
8462 | ||
2e80dbe7 | 8463 | if (!nfs41_sequence_process(task, &lrp->res.seq_res)) |
cbe82603 BH |
8464 | return; |
8465 | ||
8466 | server = NFS_SERVER(lrp->args.inode); | |
f22e5edd TM |
8467 | switch (task->tk_status) { |
8468 | default: | |
8469 | task->tk_status = 0; | |
8470 | case 0: | |
8471 | break; | |
8472 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8473 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 8474 | break; |
2e80dbe7 | 8475 | nfs4_sequence_free_slot(&lrp->res.seq_res); |
d00c5d43 | 8476 | rpc_restart_call_prepare(task); |
cbe82603 BH |
8477 | return; |
8478 | } | |
cbe82603 BH |
8479 | dprintk("<-- %s\n", __func__); |
8480 | } | |
8481 | ||
8482 | static void nfs4_layoutreturn_release(void *calldata) | |
8483 | { | |
8484 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 8485 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
c5d73716 | 8486 | LIST_HEAD(freeme); |
cbe82603 BH |
8487 | |
8488 | dprintk("--> %s\n", __func__); | |
849b286f | 8489 | spin_lock(&lo->plh_inode->i_lock); |
52ec7be2 TM |
8490 | if (lrp->res.lrs_present) { |
8491 | pnfs_mark_matching_lsegs_invalid(lo, &freeme, | |
8492 | &lrp->args.range, | |
8493 | be32_to_cpu(lrp->args.stateid.seqid)); | |
849b286f | 8494 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
52ec7be2 TM |
8495 | } else |
8496 | pnfs_mark_layout_stateid_invalid(lo, &freeme); | |
d67ae825 | 8497 | pnfs_clear_layoutreturn_waitbit(lo); |
849b286f | 8498 | spin_unlock(&lo->plh_inode->i_lock); |
2e80dbe7 | 8499 | nfs4_sequence_free_slot(&lrp->res.seq_res); |
c5d73716 | 8500 | pnfs_free_lseg_list(&freeme); |
70c3bd2b | 8501 | pnfs_put_layout_hdr(lrp->args.layout); |
5a0ec8ac | 8502 | nfs_iput_and_deactive(lrp->inode); |
cbe82603 BH |
8503 | kfree(calldata); |
8504 | dprintk("<-- %s\n", __func__); | |
8505 | } | |
8506 | ||
8507 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
8508 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
8509 | .rpc_call_done = nfs4_layoutreturn_done, | |
8510 | .rpc_release = nfs4_layoutreturn_release, | |
8511 | }; | |
8512 | ||
6c16605d | 8513 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
8514 | { |
8515 | struct rpc_task *task; | |
8516 | struct rpc_message msg = { | |
8517 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
8518 | .rpc_argp = &lrp->args, | |
8519 | .rpc_resp = &lrp->res, | |
9556000d | 8520 | .rpc_cred = lrp->cred, |
cbe82603 BH |
8521 | }; |
8522 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 8523 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
8524 | .rpc_message = &msg, |
8525 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
8526 | .callback_data = lrp, | |
8527 | }; | |
6c16605d | 8528 | int status = 0; |
cbe82603 | 8529 | |
99ade3c7 AE |
8530 | nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client, |
8531 | NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
8532 | &task_setup_data.rpc_client, &msg); | |
8533 | ||
cbe82603 | 8534 | dprintk("--> %s\n", __func__); |
5a0ec8ac TM |
8535 | if (!sync) { |
8536 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); | |
8537 | if (!lrp->inode) { | |
8538 | nfs4_layoutreturn_release(lrp); | |
8539 | return -EAGAIN; | |
8540 | } | |
8541 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
8542 | } | |
a9c92d6b | 8543 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
8544 | task = rpc_run_task(&task_setup_data); |
8545 | if (IS_ERR(task)) | |
8546 | return PTR_ERR(task); | |
5a0ec8ac TM |
8547 | if (sync) |
8548 | status = task->tk_status; | |
48c9579a | 8549 | trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status); |
cbe82603 BH |
8550 | dprintk("<-- %s status=%d\n", __func__, status); |
8551 | rpc_put_task(task); | |
8552 | return status; | |
8553 | } | |
8554 | ||
b1f69b75 | 8555 | static int |
cd5875fe TM |
8556 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8557 | struct pnfs_device *pdev, | |
8558 | struct rpc_cred *cred) | |
b1f69b75 AA |
8559 | { |
8560 | struct nfs4_getdeviceinfo_args args = { | |
8561 | .pdev = pdev, | |
4e590803 TM |
8562 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
8563 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
8564 | }; |
8565 | struct nfs4_getdeviceinfo_res res = { | |
8566 | .pdev = pdev, | |
8567 | }; | |
8568 | struct rpc_message msg = { | |
8569 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
8570 | .rpc_argp = &args, | |
8571 | .rpc_resp = &res, | |
cd5875fe | 8572 | .rpc_cred = cred, |
b1f69b75 AA |
8573 | }; |
8574 | int status; | |
8575 | ||
8576 | dprintk("--> %s\n", __func__); | |
7c513058 | 8577 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
8578 | if (res.notification & ~args.notify_types) |
8579 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
8580 | if (res.notification != args.notify_types) |
8581 | pdev->nocache = 1; | |
4e590803 | 8582 | |
b1f69b75 AA |
8583 | dprintk("<-- %s status=%d\n", __func__, status); |
8584 | ||
8585 | return status; | |
8586 | } | |
8587 | ||
cd5875fe TM |
8588 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
8589 | struct pnfs_device *pdev, | |
8590 | struct rpc_cred *cred) | |
b1f69b75 AA |
8591 | { |
8592 | struct nfs4_exception exception = { }; | |
8593 | int err; | |
8594 | ||
8595 | do { | |
8596 | err = nfs4_handle_exception(server, | |
cd5875fe | 8597 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
8598 | &exception); |
8599 | } while (exception.retry); | |
8600 | return err; | |
8601 | } | |
8602 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
8603 | ||
863a3c6c AA |
8604 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
8605 | { | |
8606 | struct nfs4_layoutcommit_data *data = calldata; | |
8607 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6ba7db34 | 8608 | struct nfs4_session *session = nfs4_get_session(server); |
863a3c6c | 8609 | |
d9afbd1b TM |
8610 | nfs41_setup_sequence(session, |
8611 | &data->args.seq_args, | |
8612 | &data->res.seq_res, | |
8613 | task); | |
863a3c6c AA |
8614 | } |
8615 | ||
8616 | static void | |
8617 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
8618 | { | |
8619 | struct nfs4_layoutcommit_data *data = calldata; | |
8620 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
8621 | ||
6ba7db34 | 8622 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
8623 | return; |
8624 | ||
8625 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
8626 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
8627 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
8628 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
8629 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 8630 | task->tk_status = 0; |
e59d27e0 | 8631 | case 0: |
e59d27e0 TM |
8632 | break; |
8633 | default: | |
8478eaa1 | 8634 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
8635 | rpc_restart_call_prepare(task); |
8636 | return; | |
8637 | } | |
8638 | } | |
863a3c6c AA |
8639 | } |
8640 | ||
8641 | static void nfs4_layoutcommit_release(void *calldata) | |
8642 | { | |
8643 | struct nfs4_layoutcommit_data *data = calldata; | |
8644 | ||
db29c089 | 8645 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
8646 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
8647 | data->res.fattr); | |
863a3c6c | 8648 | put_rpccred(data->cred); |
472e2594 | 8649 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
8650 | kfree(data); |
8651 | } | |
8652 | ||
8653 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
8654 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
8655 | .rpc_call_done = nfs4_layoutcommit_done, | |
8656 | .rpc_release = nfs4_layoutcommit_release, | |
8657 | }; | |
8658 | ||
8659 | int | |
ef311537 | 8660 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
8661 | { |
8662 | struct rpc_message msg = { | |
8663 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
8664 | .rpc_argp = &data->args, | |
8665 | .rpc_resp = &data->res, | |
8666 | .rpc_cred = data->cred, | |
8667 | }; | |
8668 | struct rpc_task_setup task_setup_data = { | |
8669 | .task = &data->task, | |
8670 | .rpc_client = NFS_CLIENT(data->args.inode), | |
8671 | .rpc_message = &msg, | |
8672 | .callback_ops = &nfs4_layoutcommit_ops, | |
8673 | .callback_data = data, | |
863a3c6c AA |
8674 | }; |
8675 | struct rpc_task *task; | |
8676 | int status = 0; | |
8677 | ||
b4839ebe KM |
8678 | dprintk("NFS: initiating layoutcommit call. sync %d " |
8679 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
8680 | data->args.lastbytewritten, |
8681 | data->args.inode->i_ino); | |
8682 | ||
472e2594 TM |
8683 | if (!sync) { |
8684 | data->inode = nfs_igrab_and_active(data->args.inode); | |
8685 | if (data->inode == NULL) { | |
8686 | nfs4_layoutcommit_release(data); | |
8687 | return -EAGAIN; | |
8688 | } | |
8689 | task_setup_data.flags = RPC_TASK_ASYNC; | |
8690 | } | |
a9c92d6b | 8691 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
8692 | task = rpc_run_task(&task_setup_data); |
8693 | if (IS_ERR(task)) | |
8694 | return PTR_ERR(task); | |
472e2594 TM |
8695 | if (sync) |
8696 | status = task->tk_status; | |
48c9579a | 8697 | trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status); |
863a3c6c AA |
8698 | dprintk("%s: status %d\n", __func__, status); |
8699 | rpc_put_task(task); | |
8700 | return status; | |
8701 | } | |
fca78d6d | 8702 | |
97431204 AA |
8703 | /** |
8704 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if | |
8705 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
8706 | */ | |
fca78d6d BS |
8707 | static int |
8708 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
8709 | struct nfs_fsinfo *info, |
8710 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
8711 | { |
8712 | struct nfs41_secinfo_no_name_args args = { | |
8713 | .style = SECINFO_STYLE_CURRENT_FH, | |
8714 | }; | |
8715 | struct nfs4_secinfo_res res = { | |
8716 | .flavors = flavors, | |
8717 | }; | |
8718 | struct rpc_message msg = { | |
8719 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
8720 | .rpc_argp = &args, | |
8721 | .rpc_resp = &res, | |
8722 | }; | |
b1b3e136 | 8723 | struct rpc_clnt *clnt = server->client; |
7cb852df | 8724 | struct rpc_cred *cred = NULL; |
b1b3e136 WAA |
8725 | int status; |
8726 | ||
8727 | if (use_integrity) { | |
8728 | clnt = server->nfs_client->cl_rpcclient; | |
7cb852df WAA |
8729 | cred = nfs4_get_clid_cred(server->nfs_client); |
8730 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
8731 | } |
8732 | ||
8733 | dprintk("--> %s\n", __func__); | |
8734 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
8735 | &res.seq_res, 0); | |
8736 | dprintk("<-- %s status=%d\n", __func__, status); | |
8737 | ||
7cb852df WAA |
8738 | if (cred) |
8739 | put_rpccred(cred); | |
b1b3e136 WAA |
8740 | |
8741 | return status; | |
fca78d6d BS |
8742 | } |
8743 | ||
8744 | static int | |
8745 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
8746 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
8747 | { | |
8748 | struct nfs4_exception exception = { }; | |
8749 | int err; | |
8750 | do { | |
b1b3e136 WAA |
8751 | /* first try using integrity protection */ |
8752 | err = -NFS4ERR_WRONGSEC; | |
8753 | ||
8754 | /* try to use integrity protection with machine cred */ | |
8755 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
8756 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8757 | flavors, true); | |
8758 | ||
8759 | /* | |
8760 | * if unable to use integrity protection, or SECINFO with | |
8761 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8762 | * disallowed by spec, but exists in deployed servers) use | |
8763 | * the current filesystem's rpc_client and the user cred. | |
8764 | */ | |
8765 | if (err == -NFS4ERR_WRONGSEC) | |
8766 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
8767 | flavors, false); | |
8768 | ||
fca78d6d BS |
8769 | switch (err) { |
8770 | case 0: | |
8771 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 8772 | case -ENOTSUPP: |
05e9cfb4 | 8773 | goto out; |
fca78d6d BS |
8774 | default: |
8775 | err = nfs4_handle_exception(server, err, &exception); | |
8776 | } | |
8777 | } while (exception.retry); | |
05e9cfb4 | 8778 | out: |
fca78d6d BS |
8779 | return err; |
8780 | } | |
8781 | ||
8782 | static int | |
8783 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
8784 | struct nfs_fsinfo *info) | |
8785 | { | |
8786 | int err; | |
8787 | struct page *page; | |
367156d9 | 8788 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 8789 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
8790 | struct nfs4_secinfo4 *secinfo; |
8791 | int i; | |
fca78d6d BS |
8792 | |
8793 | page = alloc_page(GFP_KERNEL); | |
8794 | if (!page) { | |
8795 | err = -ENOMEM; | |
8796 | goto out; | |
8797 | } | |
8798 | ||
8799 | flavors = page_address(page); | |
8800 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
8801 | ||
8802 | /* | |
8803 | * Fall back on "guess and check" method if | |
8804 | * the server doesn't support SECINFO_NO_NAME | |
8805 | */ | |
78b19bae | 8806 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
8807 | err = nfs4_find_root_sec(server, fhandle, info); |
8808 | goto out_freepage; | |
8809 | } | |
8810 | if (err) | |
8811 | goto out_freepage; | |
8812 | ||
58a8cf12 WAA |
8813 | for (i = 0; i < flavors->num_flavors; i++) { |
8814 | secinfo = &flavors->flavors[i]; | |
8815 | ||
8816 | switch (secinfo->flavor) { | |
8817 | case RPC_AUTH_NULL: | |
8818 | case RPC_AUTH_UNIX: | |
8819 | case RPC_AUTH_GSS: | |
8820 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
8821 | &secinfo->flavor_info); | |
8822 | break; | |
8823 | default: | |
8824 | flavor = RPC_AUTH_MAXFLAVOR; | |
8825 | break; | |
8826 | } | |
8827 | ||
4d4b69dd WAA |
8828 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
8829 | flavor = RPC_AUTH_MAXFLAVOR; | |
8830 | ||
58a8cf12 WAA |
8831 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
8832 | err = nfs4_lookup_root_sec(server, fhandle, | |
8833 | info, flavor); | |
8834 | if (!err) | |
8835 | break; | |
8836 | } | |
8837 | } | |
8838 | ||
8839 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
8840 | err = -EPERM; | |
fca78d6d BS |
8841 | |
8842 | out_freepage: | |
8843 | put_page(page); | |
8844 | if (err == -EACCES) | |
8845 | return -EPERM; | |
8846 | out: | |
8847 | return err; | |
8848 | } | |
1cab0652 | 8849 | |
ab7cb0df TM |
8850 | static int _nfs41_test_stateid(struct nfs_server *server, |
8851 | nfs4_stateid *stateid, | |
8852 | struct rpc_cred *cred) | |
7d974794 BS |
8853 | { |
8854 | int status; | |
8855 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 8856 | .stateid = stateid, |
7d974794 BS |
8857 | }; |
8858 | struct nfs41_test_stateid_res res; | |
8859 | struct rpc_message msg = { | |
8860 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
8861 | .rpc_argp = &args, | |
8862 | .rpc_resp = &res, | |
ab7cb0df | 8863 | .rpc_cred = cred, |
7d974794 | 8864 | }; |
3787d506 WAA |
8865 | struct rpc_clnt *rpc_client = server->client; |
8866 | ||
8867 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
8868 | &rpc_client, &msg); | |
1cab0652 | 8869 | |
38527b15 | 8870 | dprintk("NFS call test_stateid %p\n", stateid); |
a9c92d6b | 8871 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0); |
8fe72bac | 8872 | nfs4_set_sequence_privileged(&args.seq_args); |
3787d506 | 8873 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 8874 | &args.seq_args, &res.seq_res); |
38527b15 CL |
8875 | if (status != NFS_OK) { |
8876 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 8877 | return status; |
38527b15 CL |
8878 | } |
8879 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 8880 | return -res.status; |
7d974794 BS |
8881 | } |
8882 | ||
43912bbb TM |
8883 | static void nfs4_handle_delay_or_session_error(struct nfs_server *server, |
8884 | int err, struct nfs4_exception *exception) | |
8885 | { | |
8886 | exception->retry = 0; | |
8887 | switch(err) { | |
8888 | case -NFS4ERR_DELAY: | |
8889 | nfs4_handle_exception(server, err, exception); | |
8890 | break; | |
8891 | case -NFS4ERR_BADSESSION: | |
8892 | case -NFS4ERR_BADSLOT: | |
8893 | case -NFS4ERR_BAD_HIGH_SLOT: | |
8894 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
8895 | case -NFS4ERR_DEADSESSION: | |
8896 | nfs4_do_handle_exception(server, err, exception); | |
8897 | } | |
8898 | } | |
8899 | ||
38527b15 CL |
8900 | /** |
8901 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
8902 | * | |
8903 | * @server: server / transport on which to perform the operation | |
8904 | * @stateid: state ID to test | |
ab7cb0df | 8905 | * @cred: credential |
38527b15 CL |
8906 | * |
8907 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
8908 | * Otherwise a negative NFS4ERR value is returned if the operation | |
8909 | * failed or the state ID is not currently valid. | |
8910 | */ | |
ab7cb0df TM |
8911 | static int nfs41_test_stateid(struct nfs_server *server, |
8912 | nfs4_stateid *stateid, | |
8913 | struct rpc_cred *cred) | |
7d974794 BS |
8914 | { |
8915 | struct nfs4_exception exception = { }; | |
8916 | int err; | |
8917 | do { | |
ab7cb0df | 8918 | err = _nfs41_test_stateid(server, stateid, cred); |
43912bbb | 8919 | nfs4_handle_delay_or_session_error(server, err, &exception); |
7d974794 BS |
8920 | } while (exception.retry); |
8921 | return err; | |
8922 | } | |
9aeda35f | 8923 | |
7c1d5fae TM |
8924 | struct nfs_free_stateid_data { |
8925 | struct nfs_server *server; | |
8926 | struct nfs41_free_stateid_args args; | |
9aeda35f | 8927 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
8928 | }; |
8929 | ||
8930 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
8931 | { | |
8932 | struct nfs_free_stateid_data *data = calldata; | |
8933 | nfs41_setup_sequence(nfs4_get_session(data->server), | |
8934 | &data->args.seq_args, | |
8935 | &data->res.seq_res, | |
8936 | task); | |
8937 | } | |
8938 | ||
8939 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
8940 | { | |
8941 | struct nfs_free_stateid_data *data = calldata; | |
8942 | ||
8943 | nfs41_sequence_done(task, &data->res.seq_res); | |
8944 | ||
8945 | switch (task->tk_status) { | |
8946 | case -NFS4ERR_DELAY: | |
8478eaa1 | 8947 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
8948 | rpc_restart_call_prepare(task); |
8949 | } | |
8950 | } | |
8951 | ||
8952 | static void nfs41_free_stateid_release(void *calldata) | |
8953 | { | |
8954 | kfree(calldata); | |
8955 | } | |
8956 | ||
17f26b12 | 8957 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
8958 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
8959 | .rpc_call_done = nfs41_free_stateid_done, | |
8960 | .rpc_release = nfs41_free_stateid_release, | |
8961 | }; | |
8962 | ||
8963 | static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, | |
f0b0bf88 | 8964 | const nfs4_stateid *stateid, |
ab7cb0df | 8965 | struct rpc_cred *cred, |
7c1d5fae TM |
8966 | bool privileged) |
8967 | { | |
9aeda35f BS |
8968 | struct rpc_message msg = { |
8969 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 8970 | .rpc_cred = cred, |
9aeda35f | 8971 | }; |
7c1d5fae TM |
8972 | struct rpc_task_setup task_setup = { |
8973 | .rpc_client = server->client, | |
8974 | .rpc_message = &msg, | |
8975 | .callback_ops = &nfs41_free_stateid_ops, | |
8976 | .flags = RPC_TASK_ASYNC, | |
8977 | }; | |
8978 | struct nfs_free_stateid_data *data; | |
9aeda35f | 8979 | |
3787d506 WAA |
8980 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
8981 | &task_setup.rpc_client, &msg); | |
8982 | ||
38527b15 | 8983 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
8984 | data = kmalloc(sizeof(*data), GFP_NOFS); |
8985 | if (!data) | |
8986 | return ERR_PTR(-ENOMEM); | |
8987 | data->server = server; | |
8988 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
8989 | ||
8990 | task_setup.callback_data = data; | |
8991 | ||
8992 | msg.rpc_argp = &data->args; | |
8993 | msg.rpc_resp = &data->res; | |
a9c92d6b | 8994 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
7c1d5fae TM |
8995 | if (privileged) |
8996 | nfs4_set_sequence_privileged(&data->args.seq_args); | |
8997 | ||
8998 | return rpc_run_task(&task_setup); | |
9aeda35f BS |
8999 | } |
9000 | ||
38527b15 CL |
9001 | /** |
9002 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
9003 | * | |
9004 | * @server: server / transport on which to perform the operation | |
9005 | * @stateid: state ID to release | |
ab7cb0df | 9006 | * @cred: credential |
f0b0bf88 | 9007 | * @is_recovery: set to true if this call needs to be privileged |
38527b15 | 9008 | * |
f0b0bf88 | 9009 | * Note: this function is always asynchronous. |
38527b15 | 9010 | */ |
ab7cb0df | 9011 | static int nfs41_free_stateid(struct nfs_server *server, |
f0b0bf88 TM |
9012 | const nfs4_stateid *stateid, |
9013 | struct rpc_cred *cred, | |
9014 | bool is_recovery) | |
9aeda35f | 9015 | { |
7c1d5fae | 9016 | struct rpc_task *task; |
7c1d5fae | 9017 | |
f0b0bf88 | 9018 | task = _nfs41_free_stateid(server, stateid, cred, is_recovery); |
7c1d5fae TM |
9019 | if (IS_ERR(task)) |
9020 | return PTR_ERR(task); | |
7c1d5fae | 9021 | rpc_put_task(task); |
f0b0bf88 | 9022 | return 0; |
9aeda35f | 9023 | } |
36281caa | 9024 | |
f1cdae87 JL |
9025 | static void |
9026 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf | 9027 | { |
ab7cb0df | 9028 | struct rpc_cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 9029 | |
f0b0bf88 | 9030 | nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf | 9031 | nfs4_free_lock_state(server, lsp); |
c8b2d0bf TM |
9032 | } |
9033 | ||
36281caa TM |
9034 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
9035 | const nfs4_stateid *s2) | |
9036 | { | |
93b717fd TM |
9037 | if (s1->type != s2->type) |
9038 | return false; | |
9039 | ||
2d2f24ad | 9040 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
9041 | return false; |
9042 | ||
2d2f24ad | 9043 | if (s1->seqid == s2->seqid) |
36281caa | 9044 | return true; |
2d2f24ad | 9045 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
9046 | return true; |
9047 | ||
9048 | return false; | |
9049 | } | |
9050 | ||
557134a3 AA |
9051 | #endif /* CONFIG_NFS_V4_1 */ |
9052 | ||
36281caa TM |
9053 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
9054 | const nfs4_stateid *s2) | |
9055 | { | |
f597c537 | 9056 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
9057 | } |
9058 | ||
9059 | ||
17280175 | 9060 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 9061 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 9062 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
9063 | .recover_open = nfs4_open_reclaim, |
9064 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 9065 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 9066 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
9067 | }; |
9068 | ||
591d71cb | 9069 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 9070 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
9071 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
9072 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
9073 | .recover_open = nfs4_open_reclaim, | |
9074 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 9075 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 9076 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 9077 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
9078 | }; |
9079 | #endif /* CONFIG_NFS_V4_1 */ | |
9080 | ||
17280175 | 9081 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
9082 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
9083 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 9084 | .recover_open = nfs40_open_expired, |
591d71cb AA |
9085 | .recover_lock = nfs4_lock_expired, |
9086 | .establish_clid = nfs4_init_clientid, | |
9087 | }; | |
9088 | ||
9089 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 9090 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 9091 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 9092 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
9093 | .recover_open = nfs41_open_expired, |
9094 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 9095 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 9096 | }; |
591d71cb | 9097 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 9098 | |
17280175 | 9099 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 9100 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 9101 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 9102 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
9103 | }; |
9104 | ||
9105 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 9106 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 9107 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 9108 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 9109 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
9110 | }; |
9111 | #endif | |
9112 | ||
ec011fe8 | 9113 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 9114 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 9115 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
9116 | }; |
9117 | ||
9118 | #if defined(CONFIG_NFS_V4_1) | |
9119 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 9120 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 9121 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
9122 | }; |
9123 | #endif /* CONFIG_NFS_V4_1 */ | |
9124 | ||
97dc1359 TM |
9125 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
9126 | .minor_version = 0, | |
39c6daae TM |
9127 | .init_caps = NFS_CAP_READDIRPLUS |
9128 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 9129 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
9130 | .init_client = nfs40_init_client, |
9131 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 9132 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 9133 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 9134 | .free_lock_state = nfs4_release_lockowner, |
45870d69 | 9135 | .test_and_free_expired = nfs40_test_and_free_expired_stateid, |
63f5f796 | 9136 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 9137 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
9138 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
9139 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
9140 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 9141 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
9142 | }; |
9143 | ||
9144 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
9145 | static struct nfs_seqid * |
9146 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
9147 | { | |
9148 | return NULL; | |
9149 | } | |
9150 | ||
97dc1359 TM |
9151 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
9152 | .minor_version = 1, | |
39c6daae TM |
9153 | .init_caps = NFS_CAP_READDIRPLUS |
9154 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 9155 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 9156 | | NFS_CAP_STATEID_NFSV41 |
e983120e | 9157 | | NFS_CAP_ATOMIC_OPEN_V1, |
abf79bb3 CL |
9158 | .init_client = nfs41_init_client, |
9159 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 9160 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 9161 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 9162 | .free_lock_state = nfs41_free_lock_state, |
45870d69 | 9163 | .test_and_free_expired = nfs41_test_and_free_expired_stateid, |
63f5f796 | 9164 | .alloc_seqid = nfs_alloc_no_seqid, |
04fa2c6b | 9165 | .session_trunk = nfs4_test_session_trunk, |
9915ea7e | 9166 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
9167 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
9168 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
9169 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 9170 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
9171 | }; |
9172 | #endif | |
9173 | ||
42c2c424 SD |
9174 | #if defined(CONFIG_NFS_V4_2) |
9175 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
9176 | .minor_version = 2, | |
7017310a BS |
9177 | .init_caps = NFS_CAP_READDIRPLUS |
9178 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
9179 | | NFS_CAP_POSIX_LOCK |
9180 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 9181 | | NFS_CAP_ATOMIC_OPEN_V1 |
f4ac1674 | 9182 | | NFS_CAP_ALLOCATE |
2e72448b | 9183 | | NFS_CAP_COPY |
624bd5b7 | 9184 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 9185 | | NFS_CAP_SEEK |
e5341f3a PT |
9186 | | NFS_CAP_LAYOUTSTATS |
9187 | | NFS_CAP_CLONE, | |
abf79bb3 CL |
9188 | .init_client = nfs41_init_client, |
9189 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
9190 | .match_stateid = nfs41_match_stateid, |
9191 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 9192 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 9193 | .call_sync_ops = &nfs41_call_sync_ops, |
45870d69 | 9194 | .test_and_free_expired = nfs41_test_and_free_expired_stateid, |
63f5f796 | 9195 | .alloc_seqid = nfs_alloc_no_seqid, |
04fa2c6b | 9196 | .session_trunk = nfs4_test_session_trunk, |
42c2c424 SD |
9197 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
9198 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
9199 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 9200 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
9201 | }; |
9202 | #endif | |
9203 | ||
97dc1359 TM |
9204 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
9205 | [0] = &nfs_v4_0_minor_ops, | |
9206 | #if defined(CONFIG_NFS_V4_1) | |
9207 | [1] = &nfs_v4_1_minor_ops, | |
9208 | #endif | |
42c2c424 SD |
9209 | #if defined(CONFIG_NFS_V4_2) |
9210 | [2] = &nfs_v4_2_minor_ops, | |
9211 | #endif | |
97dc1359 TM |
9212 | }; |
9213 | ||
13997823 | 9214 | static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) |
c4803c49 AG |
9215 | { |
9216 | ssize_t error, error2; | |
9217 | ||
9218 | error = generic_listxattr(dentry, list, size); | |
9219 | if (error < 0) | |
9220 | return error; | |
9221 | if (list) { | |
9222 | list += error; | |
9223 | size -= error; | |
9224 | } | |
9225 | ||
9226 | error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size); | |
9227 | if (error2 < 0) | |
9228 | return error2; | |
9229 | return error + error2; | |
9230 | } | |
9231 | ||
17f26b12 | 9232 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
9233 | .create = nfs_create, |
9234 | .lookup = nfs_lookup, | |
9235 | .atomic_open = nfs_atomic_open, | |
9236 | .link = nfs_link, | |
9237 | .unlink = nfs_unlink, | |
9238 | .symlink = nfs_symlink, | |
9239 | .mkdir = nfs_mkdir, | |
9240 | .rmdir = nfs_rmdir, | |
9241 | .mknod = nfs_mknod, | |
9242 | .rename = nfs_rename, | |
9243 | .permission = nfs_permission, | |
9244 | .getattr = nfs_getattr, | |
9245 | .setattr = nfs_setattr, | |
9246 | .getxattr = generic_getxattr, | |
9247 | .setxattr = generic_setxattr, | |
c4803c49 | 9248 | .listxattr = nfs4_listxattr, |
73a79706 BS |
9249 | .removexattr = generic_removexattr, |
9250 | }; | |
9251 | ||
92e1d5be | 9252 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
9253 | .permission = nfs_permission, |
9254 | .getattr = nfs_getattr, | |
9255 | .setattr = nfs_setattr, | |
64c2ce8b AK |
9256 | .getxattr = generic_getxattr, |
9257 | .setxattr = generic_setxattr, | |
c4803c49 | 9258 | .listxattr = nfs4_listxattr, |
64c2ce8b | 9259 | .removexattr = generic_removexattr, |
6b3b5496 BF |
9260 | }; |
9261 | ||
509de811 | 9262 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
9263 | .version = 4, /* protocol version */ |
9264 | .dentry_ops = &nfs4_dentry_operations, | |
9265 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 9266 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 9267 | .file_ops = &nfs4_file_operations, |
1da177e4 | 9268 | .getroot = nfs4_proc_get_root, |
281cad46 | 9269 | .submount = nfs4_submount, |
ff9099f2 | 9270 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
9271 | .getattr = nfs4_proc_getattr, |
9272 | .setattr = nfs4_proc_setattr, | |
9273 | .lookup = nfs4_proc_lookup, | |
9274 | .access = nfs4_proc_access, | |
9275 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
9276 | .create = nfs4_proc_create, |
9277 | .remove = nfs4_proc_remove, | |
9278 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 9279 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 9280 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 9281 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 9282 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 9283 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
9284 | .link = nfs4_proc_link, |
9285 | .symlink = nfs4_proc_symlink, | |
9286 | .mkdir = nfs4_proc_mkdir, | |
9287 | .rmdir = nfs4_proc_remove, | |
9288 | .readdir = nfs4_proc_readdir, | |
9289 | .mknod = nfs4_proc_mknod, | |
9290 | .statfs = nfs4_proc_statfs, | |
9291 | .fsinfo = nfs4_proc_fsinfo, | |
9292 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 9293 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 9294 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 9295 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 9296 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 9297 | .read_done = nfs4_read_done, |
1da177e4 | 9298 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 9299 | .write_done = nfs4_write_done, |
1da177e4 | 9300 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 9301 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 9302 | .commit_done = nfs4_commit_done, |
1da177e4 | 9303 | .lock = nfs4_proc_lock, |
e50a1c2e | 9304 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 9305 | .close_context = nfs4_close_context, |
2b484297 | 9306 | .open_context = nfs4_atomic_open, |
011e2a7f | 9307 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 9308 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 9309 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 9310 | .init_client = nfs4_init_client, |
cdb7eced | 9311 | .free_client = nfs4_free_client, |
1179acc6 BS |
9312 | .create_server = nfs4_create_server, |
9313 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
9314 | }; |
9315 | ||
64c2ce8b | 9316 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
98e9cb57 | 9317 | .name = XATTR_NAME_NFSV4_ACL, |
64c2ce8b AK |
9318 | .list = nfs4_xattr_list_nfs4_acl, |
9319 | .get = nfs4_xattr_get_nfs4_acl, | |
9320 | .set = nfs4_xattr_set_nfs4_acl, | |
9321 | }; | |
9322 | ||
9323 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
9324 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
9325 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
9326 | &nfs4_xattr_nfs4_label_handler, | |
9327 | #endif | |
64c2ce8b AK |
9328 | NULL |
9329 | }; | |
9330 | ||
1da177e4 LT |
9331 | /* |
9332 | * Local variables: | |
9333 | * c-basic-offset: 8 | |
9334 | * End: | |
9335 | */ |