1 /*
2 * fs/nfsd/nfs4proc.c
3 *
4 * Server-side procedures 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/param.h>
39 #include <linux/major.h>
40 #include <linux/slab.h>
41 #include <linux/file.h>
42
43 #include <linux/sunrpc/svc.h>
44 #include <linux/nfsd/nfsd.h>
45 #include <linux/nfsd/cache.h>
46 #include <linux/nfs4.h>
47 #include <linux/nfsd/state.h>
48 #include <linux/nfsd/xdr4.h>
49 #include <linux/nfs4_acl.h>
50 #include <linux/sunrpc/gss_api.h>
51
52 #define NFSDDBG_FACILITY NFSDDBG_PROC
53
54 static inline void
fh_dup2(struct svc_fh * dst,struct svc_fh * src)55 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
56 {
57 fh_put(dst);
58 dget(src->fh_dentry);
59 if (src->fh_export)
60 cache_get(&src->fh_export->h);
61 *dst = *src;
62 }
63
64 static __be32
do_open_permission(struct svc_rqst * rqstp,struct svc_fh * current_fh,struct nfsd4_open * open,int accmode)65 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
66 {
67 __be32 status;
68
69 if (open->op_truncate &&
70 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
71 return nfserr_inval;
72
73 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
74 accmode |= NFSD_MAY_READ;
75 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
76 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
77 if (open->op_share_deny & NFS4_SHARE_DENY_WRITE)
78 accmode |= NFSD_MAY_WRITE;
79
80 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
81
82 return status;
83 }
84
85 static __be32
do_open_lookup(struct svc_rqst * rqstp,struct svc_fh * current_fh,struct nfsd4_open * open)86 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
87 {
88 struct svc_fh resfh;
89 __be32 status;
90 int created = 0;
91
92 fh_init(&resfh, NFS4_FHSIZE);
93 open->op_truncate = 0;
94
95 if (open->op_create) {
96 /*
97 * Note: create modes (UNCHECKED,GUARDED...) are the same
98 * in NFSv4 as in v3.
99 */
100 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
101 open->op_fname.len, &open->op_iattr,
102 &resfh, open->op_createmode,
103 (u32 *)open->op_verf.data,
104 &open->op_truncate, &created);
105
106 /* If we ever decide to use different attrs to store the
107 * verifier in nfsd_create_v3, then we'll need to change this
108 */
109 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
110 open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
111 FATTR4_WORD1_TIME_MODIFY);
112 } else {
113 status = nfsd_lookup(rqstp, current_fh,
114 open->op_fname.data, open->op_fname.len, &resfh);
115 fh_unlock(current_fh);
116 }
117 if (status)
118 goto out;
119
120 set_change_info(&open->op_cinfo, current_fh);
121
122 /* set reply cache */
123 fh_dup2(current_fh, &resfh);
124 open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size;
125 memcpy(open->op_stateowner->so_replay.rp_openfh,
126 &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size);
127
128 if (!created)
129 status = do_open_permission(rqstp, current_fh, open,
130 NFSD_MAY_NOP);
131
132 out:
133 fh_put(&resfh);
134 return status;
135 }
136
137 static __be32
do_open_fhandle(struct svc_rqst * rqstp,struct svc_fh * current_fh,struct nfsd4_open * open)138 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
139 {
140 __be32 status;
141
142 /* Only reclaims from previously confirmed clients are valid */
143 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
144 return status;
145
146 /* We don't know the target directory, and therefore can not
147 * set the change info
148 */
149
150 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
151
152 /* set replay cache */
153 open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size;
154 memcpy(open->op_stateowner->so_replay.rp_openfh,
155 ¤t_fh->fh_handle.fh_base,
156 current_fh->fh_handle.fh_size);
157
158 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
159 (open->op_iattr.ia_size == 0);
160
161 status = do_open_permission(rqstp, current_fh, open,
162 NFSD_MAY_OWNER_OVERRIDE);
163
164 return status;
165 }
166
167
168 static __be32
nfsd4_open(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_open * open)169 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
170 struct nfsd4_open *open)
171 {
172 __be32 status;
173 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
174 (int)open->op_fname.len, open->op_fname.data,
175 open->op_stateowner);
176
177 /* This check required by spec. */
178 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
179 return nfserr_inval;
180
181 nfs4_lock_state();
182
183 /* check seqid for replay. set nfs4_owner */
184 status = nfsd4_process_open1(open);
185 if (status == nfserr_replay_me) {
186 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
187 fh_put(&cstate->current_fh);
188 cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len;
189 memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh,
190 rp->rp_openfh_len);
191 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
192 if (status)
193 dprintk("nfsd4_open: replay failed"
194 " restoring previous filehandle\n");
195 else
196 status = nfserr_replay_me;
197 }
198 if (status)
199 goto out;
200
201 /* Openowner is now set, so sequence id will get bumped. Now we need
202 * these checks before we do any creates: */
203 status = nfserr_grace;
204 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
205 goto out;
206 status = nfserr_no_grace;
207 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
208 goto out;
209
210 switch (open->op_claim_type) {
211 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
212 status = nfserr_inval;
213 if (open->op_create)
214 goto out;
215 /* fall through */
216 case NFS4_OPEN_CLAIM_NULL:
217 /*
218 * (1) set CURRENT_FH to the file being opened,
219 * creating it if necessary, (2) set open->op_cinfo,
220 * (3) set open->op_truncate if the file is to be
221 * truncated after opening, (4) do permission checking.
222 */
223 status = do_open_lookup(rqstp, &cstate->current_fh,
224 open);
225 if (status)
226 goto out;
227 break;
228 case NFS4_OPEN_CLAIM_PREVIOUS:
229 open->op_stateowner->so_confirmed = 1;
230 /*
231 * The CURRENT_FH is already set to the file being
232 * opened. (1) set open->op_cinfo, (2) set
233 * open->op_truncate if the file is to be truncated
234 * after opening, (3) do permission checking.
235 */
236 status = do_open_fhandle(rqstp, &cstate->current_fh,
237 open);
238 if (status)
239 goto out;
240 break;
241 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
242 open->op_stateowner->so_confirmed = 1;
243 dprintk("NFSD: unsupported OPEN claim type %d\n",
244 open->op_claim_type);
245 status = nfserr_notsupp;
246 goto out;
247 default:
248 dprintk("NFSD: Invalid OPEN claim type %d\n",
249 open->op_claim_type);
250 status = nfserr_inval;
251 goto out;
252 }
253 /*
254 * nfsd4_process_open2() does the actual opening of the file. If
255 * successful, it (1) truncates the file if open->op_truncate was
256 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
257 */
258 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
259 out:
260 if (open->op_stateowner) {
261 nfs4_get_stateowner(open->op_stateowner);
262 cstate->replay_owner = open->op_stateowner;
263 }
264 nfs4_unlock_state();
265 return status;
266 }
267
268 /*
269 * filehandle-manipulating ops.
270 */
271 static __be32
nfsd4_getfh(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct svc_fh ** getfh)272 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
273 struct svc_fh **getfh)
274 {
275 if (!cstate->current_fh.fh_dentry)
276 return nfserr_nofilehandle;
277
278 *getfh = &cstate->current_fh;
279 return nfs_ok;
280 }
281
282 static __be32
nfsd4_putfh(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_putfh * putfh)283 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
284 struct nfsd4_putfh *putfh)
285 {
286 fh_put(&cstate->current_fh);
287 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
288 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
289 putfh->pf_fhlen);
290 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
291 }
292
293 static __be32
nfsd4_putrootfh(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,void * arg)294 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
295 void *arg)
296 {
297 __be32 status;
298
299 fh_put(&cstate->current_fh);
300 status = exp_pseudoroot(rqstp, &cstate->current_fh);
301 return status;
302 }
303
304 static __be32
nfsd4_restorefh(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,void * arg)305 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
306 void *arg)
307 {
308 if (!cstate->save_fh.fh_dentry)
309 return nfserr_restorefh;
310
311 fh_dup2(&cstate->current_fh, &cstate->save_fh);
312 return nfs_ok;
313 }
314
315 static __be32
nfsd4_savefh(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,void * arg)316 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
317 void *arg)
318 {
319 if (!cstate->current_fh.fh_dentry)
320 return nfserr_nofilehandle;
321
322 fh_dup2(&cstate->save_fh, &cstate->current_fh);
323 return nfs_ok;
324 }
325
326 /*
327 * misc nfsv4 ops
328 */
329 static __be32
nfsd4_access(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_access * access)330 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
331 struct nfsd4_access *access)
332 {
333 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
334 return nfserr_inval;
335
336 access->ac_resp_access = access->ac_req_access;
337 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
338 &access->ac_supported);
339 }
340
341 static __be32
nfsd4_commit(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_commit * commit)342 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
343 struct nfsd4_commit *commit)
344 {
345 __be32 status;
346
347 u32 *p = (u32 *)commit->co_verf.data;
348 *p++ = nfssvc_boot.tv_sec;
349 *p++ = nfssvc_boot.tv_usec;
350
351 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
352 commit->co_count);
353 if (status == nfserr_symlink)
354 status = nfserr_inval;
355 return status;
356 }
357
358 static __be32
nfsd4_create(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_create * create)359 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
360 struct nfsd4_create *create)
361 {
362 struct svc_fh resfh;
363 __be32 status;
364 dev_t rdev;
365
366 fh_init(&resfh, NFS4_FHSIZE);
367
368 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
369 NFSD_MAY_CREATE);
370 if (status == nfserr_symlink)
371 status = nfserr_notdir;
372 if (status)
373 return status;
374
375 switch (create->cr_type) {
376 case NF4LNK:
377 /* ugh! we have to null-terminate the linktext, or
378 * vfs_symlink() will choke. it is always safe to
379 * null-terminate by brute force, since at worst we
380 * will overwrite the first byte of the create namelen
381 * in the XDR buffer, which has already been extracted
382 * during XDR decode.
383 */
384 create->cr_linkname[create->cr_linklen] = 0;
385
386 status = nfsd_symlink(rqstp, &cstate->current_fh,
387 create->cr_name, create->cr_namelen,
388 create->cr_linkname, create->cr_linklen,
389 &resfh, &create->cr_iattr);
390 break;
391
392 case NF4BLK:
393 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
394 if (MAJOR(rdev) != create->cr_specdata1 ||
395 MINOR(rdev) != create->cr_specdata2)
396 return nfserr_inval;
397 status = nfsd_create(rqstp, &cstate->current_fh,
398 create->cr_name, create->cr_namelen,
399 &create->cr_iattr, S_IFBLK, rdev, &resfh);
400 break;
401
402 case NF4CHR:
403 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
404 if (MAJOR(rdev) != create->cr_specdata1 ||
405 MINOR(rdev) != create->cr_specdata2)
406 return nfserr_inval;
407 status = nfsd_create(rqstp, &cstate->current_fh,
408 create->cr_name, create->cr_namelen,
409 &create->cr_iattr,S_IFCHR, rdev, &resfh);
410 break;
411
412 case NF4SOCK:
413 status = nfsd_create(rqstp, &cstate->current_fh,
414 create->cr_name, create->cr_namelen,
415 &create->cr_iattr, S_IFSOCK, 0, &resfh);
416 break;
417
418 case NF4FIFO:
419 status = nfsd_create(rqstp, &cstate->current_fh,
420 create->cr_name, create->cr_namelen,
421 &create->cr_iattr, S_IFIFO, 0, &resfh);
422 break;
423
424 case NF4DIR:
425 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
426 status = nfsd_create(rqstp, &cstate->current_fh,
427 create->cr_name, create->cr_namelen,
428 &create->cr_iattr, S_IFDIR, 0, &resfh);
429 break;
430
431 default:
432 status = nfserr_badtype;
433 }
434
435 if (!status) {
436 fh_unlock(&cstate->current_fh);
437 set_change_info(&create->cr_cinfo, &cstate->current_fh);
438 fh_dup2(&cstate->current_fh, &resfh);
439 }
440
441 fh_put(&resfh);
442 return status;
443 }
444
445 static __be32
nfsd4_getattr(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_getattr * getattr)446 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
447 struct nfsd4_getattr *getattr)
448 {
449 __be32 status;
450
451 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
452 if (status)
453 return status;
454
455 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
456 return nfserr_inval;
457
458 getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
459 getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
460
461 getattr->ga_fhp = &cstate->current_fh;
462 return nfs_ok;
463 }
464
465 static __be32
nfsd4_link(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_link * link)466 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
467 struct nfsd4_link *link)
468 {
469 __be32 status = nfserr_nofilehandle;
470
471 if (!cstate->save_fh.fh_dentry)
472 return status;
473 status = nfsd_link(rqstp, &cstate->current_fh,
474 link->li_name, link->li_namelen, &cstate->save_fh);
475 if (!status)
476 set_change_info(&link->li_cinfo, &cstate->current_fh);
477 return status;
478 }
479
480 static __be32
nfsd4_lookupp(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,void * arg)481 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
482 void *arg)
483 {
484 struct svc_fh tmp_fh;
485 __be32 ret;
486
487 fh_init(&tmp_fh, NFS4_FHSIZE);
488 ret = exp_pseudoroot(rqstp, &tmp_fh);
489 if (ret)
490 return ret;
491 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
492 fh_put(&tmp_fh);
493 return nfserr_noent;
494 }
495 fh_put(&tmp_fh);
496 return nfsd_lookup(rqstp, &cstate->current_fh,
497 "..", 2, &cstate->current_fh);
498 }
499
500 static __be32
nfsd4_lookup(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_lookup * lookup)501 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
502 struct nfsd4_lookup *lookup)
503 {
504 return nfsd_lookup(rqstp, &cstate->current_fh,
505 lookup->lo_name, lookup->lo_len,
506 &cstate->current_fh);
507 }
508
509 static __be32
nfsd4_read(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_read * read)510 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
511 struct nfsd4_read *read)
512 {
513 __be32 status;
514
515 /* no need to check permission - this will be done in nfsd_read() */
516
517 read->rd_filp = NULL;
518 if (read->rd_offset >= OFFSET_MAX)
519 return nfserr_inval;
520
521 nfs4_lock_state();
522 /* check stateid */
523 if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
524 &read->rd_stateid,
525 CHECK_FH | RD_STATE, &read->rd_filp))) {
526 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
527 goto out;
528 }
529 if (read->rd_filp)
530 get_file(read->rd_filp);
531 status = nfs_ok;
532 out:
533 nfs4_unlock_state();
534 read->rd_rqstp = rqstp;
535 read->rd_fhp = &cstate->current_fh;
536 return status;
537 }
538
539 static __be32
nfsd4_readdir(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_readdir * readdir)540 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
541 struct nfsd4_readdir *readdir)
542 {
543 u64 cookie = readdir->rd_cookie;
544 static const nfs4_verifier zeroverf;
545
546 /* no need to check permission - this will be done in nfsd_readdir() */
547
548 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
549 return nfserr_inval;
550
551 readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
552 readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
553
554 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
555 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
556 return nfserr_bad_cookie;
557
558 readdir->rd_rqstp = rqstp;
559 readdir->rd_fhp = &cstate->current_fh;
560 return nfs_ok;
561 }
562
563 static __be32
nfsd4_readlink(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_readlink * readlink)564 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
565 struct nfsd4_readlink *readlink)
566 {
567 readlink->rl_rqstp = rqstp;
568 readlink->rl_fhp = &cstate->current_fh;
569 return nfs_ok;
570 }
571
572 static __be32
nfsd4_remove(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_remove * remove)573 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
574 struct nfsd4_remove *remove)
575 {
576 __be32 status;
577
578 if (locks_in_grace())
579 return nfserr_grace;
580 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
581 remove->rm_name, remove->rm_namelen);
582 if (status == nfserr_symlink)
583 return nfserr_notdir;
584 if (!status) {
585 fh_unlock(&cstate->current_fh);
586 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
587 }
588 return status;
589 }
590
591 static __be32
nfsd4_rename(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_rename * rename)592 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
593 struct nfsd4_rename *rename)
594 {
595 __be32 status = nfserr_nofilehandle;
596
597 if (!cstate->save_fh.fh_dentry)
598 return status;
599 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
600 & NFSEXP_NOSUBTREECHECK))
601 return nfserr_grace;
602 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
603 rename->rn_snamelen, &cstate->current_fh,
604 rename->rn_tname, rename->rn_tnamelen);
605
606 /* the underlying filesystem returns different error's than required
607 * by NFSv4. both save_fh and current_fh have been verified.. */
608 if (status == nfserr_isdir)
609 status = nfserr_exist;
610 else if ((status == nfserr_notdir) &&
611 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
612 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
613 status = nfserr_exist;
614 else if (status == nfserr_symlink)
615 status = nfserr_notdir;
616
617 if (!status) {
618 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
619 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
620 }
621 return status;
622 }
623
624 static __be32
nfsd4_secinfo(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_secinfo * secinfo)625 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
626 struct nfsd4_secinfo *secinfo)
627 {
628 struct svc_fh resfh;
629 struct svc_export *exp;
630 struct dentry *dentry;
631 __be32 err;
632
633 fh_init(&resfh, NFS4_FHSIZE);
634 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
635 secinfo->si_name, secinfo->si_namelen,
636 &exp, &dentry);
637 if (err)
638 return err;
639 if (dentry->d_inode == NULL) {
640 exp_put(exp);
641 err = nfserr_noent;
642 } else
643 secinfo->si_exp = exp;
644 dput(dentry);
645 return err;
646 }
647
648 static __be32
nfsd4_setattr(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_setattr * setattr)649 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
650 struct nfsd4_setattr *setattr)
651 {
652 __be32 status = nfs_ok;
653
654 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
655 nfs4_lock_state();
656 status = nfs4_preprocess_stateid_op(&cstate->current_fh,
657 &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL);
658 nfs4_unlock_state();
659 if (status) {
660 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
661 return status;
662 }
663 }
664 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
665 if (status)
666 return status;
667 status = nfs_ok;
668 if (setattr->sa_acl != NULL)
669 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
670 setattr->sa_acl);
671 if (status)
672 goto out;
673 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
674 0, (time_t)0);
675 out:
676 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
677 return status;
678 }
679
680 static __be32
nfsd4_write(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_write * write)681 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
682 struct nfsd4_write *write)
683 {
684 stateid_t *stateid = &write->wr_stateid;
685 struct file *filp = NULL;
686 u32 *p;
687 __be32 status = nfs_ok;
688
689 /* no need to check permission - this will be done in nfsd_write() */
690
691 if (write->wr_offset >= OFFSET_MAX)
692 return nfserr_inval;
693
694 nfs4_lock_state();
695 status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
696 CHECK_FH | WR_STATE, &filp);
697 if (filp)
698 get_file(filp);
699 nfs4_unlock_state();
700
701 if (status) {
702 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
703 return status;
704 }
705
706 write->wr_bytes_written = write->wr_buflen;
707 write->wr_how_written = write->wr_stable_how;
708 p = (u32 *)write->wr_verifier.data;
709 *p++ = nfssvc_boot.tv_sec;
710 *p++ = nfssvc_boot.tv_usec;
711
712 status = nfsd_write(rqstp, &cstate->current_fh, filp,
713 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
714 write->wr_buflen, &write->wr_how_written);
715 if (filp)
716 fput(filp);
717
718 if (status == nfserr_symlink)
719 status = nfserr_inval;
720 return status;
721 }
722
723 /* This routine never returns NFS_OK! If there are no other errors, it
724 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
725 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
726 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
727 */
728 static __be32
_nfsd4_verify(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_verify * verify)729 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
730 struct nfsd4_verify *verify)
731 {
732 __be32 *buf, *p;
733 int count;
734 __be32 status;
735
736 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
737 if (status)
738 return status;
739
740 if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
741 || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
742 return nfserr_attrnotsupp;
743 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
744 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
745 return nfserr_inval;
746 if (verify->ve_attrlen & 3)
747 return nfserr_inval;
748
749 /* count in words:
750 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
751 */
752 count = 4 + (verify->ve_attrlen >> 2);
753 buf = kmalloc(count << 2, GFP_KERNEL);
754 if (!buf)
755 return nfserr_resource;
756
757 status = nfsd4_encode_fattr(&cstate->current_fh,
758 cstate->current_fh.fh_export,
759 cstate->current_fh.fh_dentry, buf,
760 &count, verify->ve_bmval,
761 rqstp, 0);
762
763 /* this means that nfsd4_encode_fattr() ran out of space */
764 if (status == nfserr_resource && count == 0)
765 status = nfserr_not_same;
766 if (status)
767 goto out_kfree;
768
769 p = buf + 3;
770 status = nfserr_not_same;
771 if (ntohl(*p++) != verify->ve_attrlen)
772 goto out_kfree;
773 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
774 status = nfserr_same;
775
776 out_kfree:
777 kfree(buf);
778 return status;
779 }
780
781 static __be32
nfsd4_nverify(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_verify * verify)782 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
783 struct nfsd4_verify *verify)
784 {
785 __be32 status;
786
787 status = _nfsd4_verify(rqstp, cstate, verify);
788 return status == nfserr_not_same ? nfs_ok : status;
789 }
790
791 static __be32
nfsd4_verify(struct svc_rqst * rqstp,struct nfsd4_compound_state * cstate,struct nfsd4_verify * verify)792 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
793 struct nfsd4_verify *verify)
794 {
795 __be32 status;
796
797 status = _nfsd4_verify(rqstp, cstate, verify);
798 return status == nfserr_same ? nfs_ok : status;
799 }
800
801 /*
802 * NULL call.
803 */
804 static __be32
nfsd4_proc_null(struct svc_rqst * rqstp,void * argp,void * resp)805 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
806 {
807 return nfs_ok;
808 }
809
nfsd4_increment_op_stats(u32 opnum)810 static inline void nfsd4_increment_op_stats(u32 opnum)
811 {
812 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
813 nfsdstats.nfs4_opcount[opnum]++;
814 }
815
cstate_free(struct nfsd4_compound_state * cstate)816 static void cstate_free(struct nfsd4_compound_state *cstate)
817 {
818 if (cstate == NULL)
819 return;
820 fh_put(&cstate->current_fh);
821 fh_put(&cstate->save_fh);
822 BUG_ON(cstate->replay_owner);
823 kfree(cstate);
824 }
825
cstate_alloc(void)826 static struct nfsd4_compound_state *cstate_alloc(void)
827 {
828 struct nfsd4_compound_state *cstate;
829
830 cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
831 if (cstate == NULL)
832 return NULL;
833 fh_init(&cstate->current_fh, NFS4_FHSIZE);
834 fh_init(&cstate->save_fh, NFS4_FHSIZE);
835 cstate->replay_owner = NULL;
836 return cstate;
837 }
838
839 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
840 void *);
841
842 struct nfsd4_operation {
843 nfsd4op_func op_func;
844 u32 op_flags;
845 /* Most ops require a valid current filehandle; a few don't: */
846 #define ALLOWED_WITHOUT_FH 1
847 /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */
848 #define ALLOWED_ON_ABSENT_FS 2
849 char *op_name;
850 };
851
852 static struct nfsd4_operation nfsd4_ops[];
853
854 static const char *nfsd4_op_name(unsigned opnum);
855
856 /*
857 * COMPOUND call.
858 */
859 static __be32
nfsd4_proc_compound(struct svc_rqst * rqstp,struct nfsd4_compoundargs * args,struct nfsd4_compoundres * resp)860 nfsd4_proc_compound(struct svc_rqst *rqstp,
861 struct nfsd4_compoundargs *args,
862 struct nfsd4_compoundres *resp)
863 {
864 struct nfsd4_op *op;
865 struct nfsd4_operation *opdesc;
866 struct nfsd4_compound_state *cstate = NULL;
867 int slack_bytes;
868 __be32 status;
869
870 resp->xbuf = &rqstp->rq_res;
871 resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
872 resp->tagp = resp->p;
873 /* reserve space for: taglen, tag, and opcnt */
874 resp->p += 2 + XDR_QUADLEN(args->taglen);
875 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
876 resp->taglen = args->taglen;
877 resp->tag = args->tag;
878 resp->opcnt = 0;
879 resp->rqstp = rqstp;
880
881 /*
882 * According to RFC3010, this takes precedence over all other errors.
883 */
884 status = nfserr_minor_vers_mismatch;
885 if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
886 goto out;
887
888 status = nfserr_resource;
889 cstate = cstate_alloc();
890 if (cstate == NULL)
891 goto out;
892
893 status = nfs_ok;
894 while (!status && resp->opcnt < args->opcnt) {
895 op = &args->ops[resp->opcnt++];
896
897 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
898 resp->opcnt, args->opcnt, op->opnum,
899 nfsd4_op_name(op->opnum));
900
901 /*
902 * The XDR decode routines may have pre-set op->status;
903 * for example, if there is a miscellaneous XDR error
904 * it will be set to nfserr_bad_xdr.
905 */
906 if (op->status)
907 goto encode_op;
908
909 /* We must be able to encode a successful response to
910 * this operation, with enough room left over to encode a
911 * failed response to the next operation. If we don't
912 * have enough room, fail with ERR_RESOURCE.
913 */
914 slack_bytes = (char *)resp->end - (char *)resp->p;
915 if (slack_bytes < COMPOUND_SLACK_SPACE
916 + COMPOUND_ERR_SLACK_SPACE) {
917 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
918 op->status = nfserr_resource;
919 goto encode_op;
920 }
921
922 opdesc = &nfsd4_ops[op->opnum];
923
924 if (!cstate->current_fh.fh_dentry) {
925 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
926 op->status = nfserr_nofilehandle;
927 goto encode_op;
928 }
929 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
930 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
931 op->status = nfserr_moved;
932 goto encode_op;
933 }
934
935 if (opdesc->op_func)
936 op->status = opdesc->op_func(rqstp, cstate, &op->u);
937 else
938 BUG_ON(op->status == nfs_ok);
939
940 encode_op:
941 if (op->status == nfserr_replay_me) {
942 op->replay = &cstate->replay_owner->so_replay;
943 nfsd4_encode_replay(resp, op);
944 status = op->status = op->replay->rp_status;
945 } else {
946 nfsd4_encode_operation(resp, op);
947 status = op->status;
948 }
949
950 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
951 args->ops, args->opcnt, resp->opcnt, op->opnum,
952 be32_to_cpu(status));
953
954 if (cstate->replay_owner) {
955 nfs4_put_stateowner(cstate->replay_owner);
956 cstate->replay_owner = NULL;
957 }
958 /* XXX Ugh, we need to get rid of this kind of special case: */
959 if (op->opnum == OP_READ && op->u.read.rd_filp)
960 fput(op->u.read.rd_filp);
961
962 nfsd4_increment_op_stats(op->opnum);
963 }
964
965 cstate_free(cstate);
966 out:
967 nfsd4_release_compoundargs(args);
968 dprintk("nfsv4 compound returned %d\n", ntohl(status));
969 return status;
970 }
971
972 static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
973 [OP_ACCESS] = {
974 .op_func = (nfsd4op_func)nfsd4_access,
975 .op_name = "OP_ACCESS",
976 },
977 [OP_CLOSE] = {
978 .op_func = (nfsd4op_func)nfsd4_close,
979 .op_name = "OP_CLOSE",
980 },
981 [OP_COMMIT] = {
982 .op_func = (nfsd4op_func)nfsd4_commit,
983 .op_name = "OP_COMMIT",
984 },
985 [OP_CREATE] = {
986 .op_func = (nfsd4op_func)nfsd4_create,
987 .op_name = "OP_CREATE",
988 },
989 [OP_DELEGRETURN] = {
990 .op_func = (nfsd4op_func)nfsd4_delegreturn,
991 .op_name = "OP_DELEGRETURN",
992 },
993 [OP_GETATTR] = {
994 .op_func = (nfsd4op_func)nfsd4_getattr,
995 .op_flags = ALLOWED_ON_ABSENT_FS,
996 .op_name = "OP_GETATTR",
997 },
998 [OP_GETFH] = {
999 .op_func = (nfsd4op_func)nfsd4_getfh,
1000 .op_name = "OP_GETFH",
1001 },
1002 [OP_LINK] = {
1003 .op_func = (nfsd4op_func)nfsd4_link,
1004 .op_name = "OP_LINK",
1005 },
1006 [OP_LOCK] = {
1007 .op_func = (nfsd4op_func)nfsd4_lock,
1008 .op_name = "OP_LOCK",
1009 },
1010 [OP_LOCKT] = {
1011 .op_func = (nfsd4op_func)nfsd4_lockt,
1012 .op_name = "OP_LOCKT",
1013 },
1014 [OP_LOCKU] = {
1015 .op_func = (nfsd4op_func)nfsd4_locku,
1016 .op_name = "OP_LOCKU",
1017 },
1018 [OP_LOOKUP] = {
1019 .op_func = (nfsd4op_func)nfsd4_lookup,
1020 .op_name = "OP_LOOKUP",
1021 },
1022 [OP_LOOKUPP] = {
1023 .op_func = (nfsd4op_func)nfsd4_lookupp,
1024 .op_name = "OP_LOOKUPP",
1025 },
1026 [OP_NVERIFY] = {
1027 .op_func = (nfsd4op_func)nfsd4_nverify,
1028 .op_name = "OP_NVERIFY",
1029 },
1030 [OP_OPEN] = {
1031 .op_func = (nfsd4op_func)nfsd4_open,
1032 .op_name = "OP_OPEN",
1033 },
1034 [OP_OPEN_CONFIRM] = {
1035 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1036 .op_name = "OP_OPEN_CONFIRM",
1037 },
1038 [OP_OPEN_DOWNGRADE] = {
1039 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1040 .op_name = "OP_OPEN_DOWNGRADE",
1041 },
1042 [OP_PUTFH] = {
1043 .op_func = (nfsd4op_func)nfsd4_putfh,
1044 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1045 .op_name = "OP_PUTFH",
1046 },
1047 [OP_PUTPUBFH] = {
1048 /* unsupported, just for future reference: */
1049 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1050 .op_name = "OP_PUTPUBFH",
1051 },
1052 [OP_PUTROOTFH] = {
1053 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1054 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1055 .op_name = "OP_PUTROOTFH",
1056 },
1057 [OP_READ] = {
1058 .op_func = (nfsd4op_func)nfsd4_read,
1059 .op_name = "OP_READ",
1060 },
1061 [OP_READDIR] = {
1062 .op_func = (nfsd4op_func)nfsd4_readdir,
1063 .op_name = "OP_READDIR",
1064 },
1065 [OP_READLINK] = {
1066 .op_func = (nfsd4op_func)nfsd4_readlink,
1067 .op_name = "OP_READLINK",
1068 },
1069 [OP_REMOVE] = {
1070 .op_func = (nfsd4op_func)nfsd4_remove,
1071 .op_name = "OP_REMOVE",
1072 },
1073 [OP_RENAME] = {
1074 .op_name = "OP_RENAME",
1075 .op_func = (nfsd4op_func)nfsd4_rename,
1076 },
1077 [OP_RENEW] = {
1078 .op_func = (nfsd4op_func)nfsd4_renew,
1079 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1080 .op_name = "OP_RENEW",
1081 },
1082 [OP_RESTOREFH] = {
1083 .op_func = (nfsd4op_func)nfsd4_restorefh,
1084 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1085 .op_name = "OP_RESTOREFH",
1086 },
1087 [OP_SAVEFH] = {
1088 .op_func = (nfsd4op_func)nfsd4_savefh,
1089 .op_name = "OP_SAVEFH",
1090 },
1091 [OP_SECINFO] = {
1092 .op_func = (nfsd4op_func)nfsd4_secinfo,
1093 .op_name = "OP_SECINFO",
1094 },
1095 [OP_SETATTR] = {
1096 .op_func = (nfsd4op_func)nfsd4_setattr,
1097 .op_name = "OP_SETATTR",
1098 },
1099 [OP_SETCLIENTID] = {
1100 .op_func = (nfsd4op_func)nfsd4_setclientid,
1101 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1102 .op_name = "OP_SETCLIENTID",
1103 },
1104 [OP_SETCLIENTID_CONFIRM] = {
1105 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1106 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1107 .op_name = "OP_SETCLIENTID_CONFIRM",
1108 },
1109 [OP_VERIFY] = {
1110 .op_func = (nfsd4op_func)nfsd4_verify,
1111 .op_name = "OP_VERIFY",
1112 },
1113 [OP_WRITE] = {
1114 .op_func = (nfsd4op_func)nfsd4_write,
1115 .op_name = "OP_WRITE",
1116 },
1117 [OP_RELEASE_LOCKOWNER] = {
1118 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1119 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1120 .op_name = "OP_RELEASE_LOCKOWNER",
1121 },
1122 };
1123
nfsd4_op_name(unsigned opnum)1124 static const char *nfsd4_op_name(unsigned opnum)
1125 {
1126 if (opnum < ARRAY_SIZE(nfsd4_ops))
1127 return nfsd4_ops[opnum].op_name;
1128 return "unknown_operation";
1129 }
1130
1131 #define nfs4svc_decode_voidargs NULL
1132 #define nfs4svc_release_void NULL
1133 #define nfsd4_voidres nfsd4_voidargs
1134 #define nfs4svc_release_compound NULL
1135 struct nfsd4_voidargs { int dummy; };
1136
1137 #define PROC(name, argt, rest, relt, cache, respsize) \
1138 { (svc_procfunc) nfsd4_proc_##name, \
1139 (kxdrproc_t) nfs4svc_decode_##argt##args, \
1140 (kxdrproc_t) nfs4svc_encode_##rest##res, \
1141 (kxdrproc_t) nfs4svc_release_##relt, \
1142 sizeof(struct nfsd4_##argt##args), \
1143 sizeof(struct nfsd4_##rest##res), \
1144 0, \
1145 cache, \
1146 respsize, \
1147 }
1148
1149 /*
1150 * TODO: At the present time, the NFSv4 server does not do XID caching
1151 * of requests. Implementing XID caching would not be a serious problem,
1152 * although it would require a mild change in interfaces since one
1153 * doesn't know whether an NFSv4 request is idempotent until after the
1154 * XDR decode. However, XID caching totally confuses pynfs (Peter
1155 * Astrand's regression testsuite for NFSv4 servers), which reuses
1156 * XID's liberally, so I've left it unimplemented until pynfs generates
1157 * better XID's.
1158 */
1159 static struct svc_procedure nfsd_procedures4[2] = {
1160 PROC(null, void, void, void, RC_NOCACHE, 1),
1161 PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4)
1162 };
1163
1164 struct svc_version nfsd_version4 = {
1165 .vs_vers = 4,
1166 .vs_nproc = 2,
1167 .vs_proc = nfsd_procedures4,
1168 .vs_dispatch = nfsd_dispatch,
1169 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1170 };
1171
1172 /*
1173 * Local variables:
1174 * c-basic-offset: 8
1175 * End:
1176 */
1177