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Linux 3.2.60
[linux/fpc-iii.git] / fs / nfsd / nfs4proc.c
blob315a1ba47178f65c8342ebe0b1a7f51bd5ba5fec
1 /*
2 * Server-side procedures for NFSv4.
3 *
4 * Copyright (c) 2002 The Regents of the University of Michigan.
5 * All rights reserved.
6 *
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35 #include <linux/file.h>
36 #include <linux/slab.h>
37
38 #include "idmap.h"
39 #include "cache.h"
40 #include "xdr4.h"
41 #include "vfs.h"
42
43 #define NFSDDBG_FACILITY NFSDDBG_PROC
44
45 static u32 nfsd_attrmask[] = {
46 NFSD_WRITEABLE_ATTRS_WORD0,
47 NFSD_WRITEABLE_ATTRS_WORD1,
48 NFSD_WRITEABLE_ATTRS_WORD2
49 };
50
51 static u32 nfsd41_ex_attrmask[] = {
52 NFSD_SUPPATTR_EXCLCREAT_WORD0,
53 NFSD_SUPPATTR_EXCLCREAT_WORD1,
54 NFSD_SUPPATTR_EXCLCREAT_WORD2
55 };
56
57 static __be32
58 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
59 u32 *bmval, u32 *writable)
60 {
61 struct dentry *dentry = cstate->current_fh.fh_dentry;
62
63 /*
64 * Check about attributes are supported by the NFSv4 server or not.
65 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
66 */
67 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
68 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
69 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
70 return nfserr_attrnotsupp;
71
72 /*
73 * Check FATTR4_WORD0_ACL can be supported
74 * in current environment or not.
75 */
76 if (bmval[0] & FATTR4_WORD0_ACL) {
77 if (!IS_POSIXACL(dentry->d_inode))
78 return nfserr_attrnotsupp;
79 }
80
81 /*
82 * According to spec, read-only attributes return ERR_INVAL.
83 */
84 if (writable) {
85 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
86 (bmval[2] & ~writable[2]))
87 return nfserr_inval;
88 }
89
90 return nfs_ok;
91 }
92
93 static __be32
94 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
95 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
96 {
97 __be32 status = nfs_ok;
98
99 if (open->op_create == NFS4_OPEN_CREATE) {
100 if (open->op_createmode == NFS4_CREATE_UNCHECKED
101 || open->op_createmode == NFS4_CREATE_GUARDED)
102 status = check_attr_support(rqstp, cstate,
103 open->op_bmval, nfsd_attrmask);
104 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
105 status = check_attr_support(rqstp, cstate,
106 open->op_bmval, nfsd41_ex_attrmask);
107 }
108
109 return status;
110 }
111
112 static int
113 is_create_with_attrs(struct nfsd4_open *open)
114 {
115 return open->op_create == NFS4_OPEN_CREATE
116 && (open->op_createmode == NFS4_CREATE_UNCHECKED
117 || open->op_createmode == NFS4_CREATE_GUARDED
118 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
119 }
120
121 /*
122 * if error occurs when setting the acl, just clear the acl bit
123 * in the returned attr bitmap.
124 */
125 static void
126 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
127 struct nfs4_acl *acl, u32 *bmval)
128 {
129 __be32 status;
130
131 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
132 if (status)
133 /*
134 * We should probably fail the whole open at this point,
135 * but we've already created the file, so it's too late;
136 * So this seems the least of evils:
137 */
138 bmval[0] &= ~FATTR4_WORD0_ACL;
139 }
140
141 static inline void
142 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
143 {
144 fh_put(dst);
145 dget(src->fh_dentry);
146 if (src->fh_export)
147 cache_get(&src->fh_export->h);
148 *dst = *src;
149 }
150
151 static __be32
152 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
153 {
154 __be32 status;
155
156 if (open->op_truncate &&
157 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
158 return nfserr_inval;
159
160 accmode |= NFSD_MAY_READ_IF_EXEC;
161
162 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
163 accmode |= NFSD_MAY_READ;
164 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
165 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
166 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
167 accmode |= NFSD_MAY_WRITE;
168
169 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
170
171 return status;
172 }
173
174 static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
175 {
176 umode_t mode = fh->fh_dentry->d_inode->i_mode;
177
178 if (S_ISREG(mode))
179 return nfs_ok;
180 if (S_ISDIR(mode))
181 return nfserr_isdir;
182 /*
183 * Using err_symlink as our catch-all case may look odd; but
184 * there's no other obvious error for this case in 4.0, and we
185 * happen to know that it will cause the linux v4 client to do
186 * the right thing on attempts to open something other than a
187 * regular file.
188 */
189 return nfserr_symlink;
190 }
191
192 static __be32
193 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
194 {
195 struct svc_fh resfh;
196 int accmode;
197 __be32 status;
198
199 fh_init(&resfh, NFS4_FHSIZE);
200 open->op_truncate = 0;
201
202 if (open->op_create) {
203 /* FIXME: check session persistence and pnfs flags.
204 * The nfsv4.1 spec requires the following semantics:
205 *
206 * Persistent | pNFS | Server REQUIRED | Client Allowed
207 * Reply Cache | server | |
208 * -------------+--------+-----------------+--------------------
209 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
210 * | | | (SHOULD)
211 * | | and EXCLUSIVE4 | or EXCLUSIVE4
212 * | | | (SHOULD NOT)
213 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
214 * yes | no | GUARDED4 | GUARDED4
215 * yes | yes | GUARDED4 | GUARDED4
216 */
217
218 /*
219 * Note: create modes (UNCHECKED,GUARDED...) are the same
220 * in NFSv4 as in v3 except EXCLUSIVE4_1.
221 */
222 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
223 open->op_fname.len, &open->op_iattr,
224 &resfh, open->op_createmode,
225 (u32 *)open->op_verf.data,
226 &open->op_truncate, &open->op_created);
227
228 /*
229 * Following rfc 3530 14.2.16, use the returned bitmask
230 * to indicate which attributes we used to store the
231 * verifier:
232 */
233 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
234 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
235 FATTR4_WORD1_TIME_MODIFY);
236 } else {
237 status = nfsd_lookup(rqstp, current_fh,
238 open->op_fname.data, open->op_fname.len, &resfh);
239 fh_unlock(current_fh);
240 }
241 if (status)
242 goto out;
243 status = nfsd_check_obj_isreg(&resfh);
244 if (status)
245 goto out;
246
247 if (is_create_with_attrs(open) && open->op_acl != NULL)
248 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
249
250 set_change_info(&open->op_cinfo, current_fh);
251 fh_dup2(current_fh, &resfh);
252
253 /* set reply cache */
254 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
255 &resfh.fh_handle);
256 accmode = NFSD_MAY_NOP;
257 if (open->op_created)
258 accmode |= NFSD_MAY_OWNER_OVERRIDE;
259 status = do_open_permission(rqstp, current_fh, open, accmode);
260
261 out:
262 fh_put(&resfh);
263 return status;
264 }
265
266 static __be32
267 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
268 {
269 __be32 status;
270 int accmode = 0;
271
272 /* Only reclaims from previously confirmed clients are valid */
273 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
274 return status;
275
276 /* We don't know the target directory, and therefore can not
277 * set the change info
278 */
279
280 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
281
282 /* set replay cache */
283 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
284 &current_fh->fh_handle);
285
286 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
287 (open->op_iattr.ia_size == 0);
288 /*
289 * In the delegation case, the client is telling us about an
290 * open that it *already* performed locally, some time ago. We
291 * should let it succeed now if possible.
292 *
293 * In the case of a CLAIM_FH open, on the other hand, the client
294 * may be counting on us to enforce permissions (the Linux 4.1
295 * client uses this for normal opens, for example).
296 */
297 if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
298 accmode = NFSD_MAY_OWNER_OVERRIDE;
299
300 status = do_open_permission(rqstp, current_fh, open, accmode);
301
302 return status;
303 }
304
305 static void
306 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
307 {
308 struct nfsd4_sessionid *sid =
309 (struct nfsd4_sessionid *)session->se_sessionid.data;
310
311 clid->cl_boot = sid->clientid.cl_boot;
312 clid->cl_id = sid->clientid.cl_id;
313 }
314
315 static __be32
316 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
317 struct nfsd4_open *open)
318 {
319 __be32 status;
320 struct nfsd4_compoundres *resp;
321
322 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
323 (int)open->op_fname.len, open->op_fname.data,
324 open->op_openowner);
325
326 /* This check required by spec. */
327 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
328 return nfserr_inval;
329
330 /* We don't yet support WANT bits: */
331 open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
332
333 open->op_created = 0;
334 /*
335 * RFC5661 18.51.3
336 * Before RECLAIM_COMPLETE done, server should deny new lock
337 */
338 if (nfsd4_has_session(cstate) &&
339 !cstate->session->se_client->cl_firststate &&
340 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
341 return nfserr_grace;
342
343 if (nfsd4_has_session(cstate))
344 copy_clientid(&open->op_clientid, cstate->session);
345
346 nfs4_lock_state();
347
348 /* check seqid for replay. set nfs4_owner */
349 resp = rqstp->rq_resp;
350 status = nfsd4_process_open1(&resp->cstate, open);
351 if (status == nfserr_replay_me) {
352 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
353 fh_put(&cstate->current_fh);
354 fh_copy_shallow(&cstate->current_fh.fh_handle,
355 &rp->rp_openfh);
356 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
357 if (status)
358 dprintk("nfsd4_open: replay failed"
359 " restoring previous filehandle\n");
360 else
361 status = nfserr_replay_me;
362 }
363 if (status)
364 goto out;
365
366 status = nfsd4_check_open_attributes(rqstp, cstate, open);
367 if (status)
368 goto out;
369
370 /* Openowner is now set, so sequence id will get bumped. Now we need
371 * these checks before we do any creates: */
372 status = nfserr_grace;
373 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
374 goto out;
375 status = nfserr_no_grace;
376 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
377 goto out;
378
379 switch (open->op_claim_type) {
380 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
381 case NFS4_OPEN_CLAIM_NULL:
382 status = do_open_lookup(rqstp, &cstate->current_fh,
383 open);
384 if (status)
385 goto out;
386 break;
387 case NFS4_OPEN_CLAIM_PREVIOUS:
388 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
389 case NFS4_OPEN_CLAIM_FH:
390 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
391 status = do_open_fhandle(rqstp, &cstate->current_fh,
392 open);
393 if (status)
394 goto out;
395 break;
396 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
397 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
398 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
399 dprintk("NFSD: unsupported OPEN claim type %d\n",
400 open->op_claim_type);
401 status = nfserr_notsupp;
402 goto out;
403 default:
404 dprintk("NFSD: Invalid OPEN claim type %d\n",
405 open->op_claim_type);
406 status = nfserr_inval;
407 goto out;
408 }
409 /*
410 * nfsd4_process_open2() does the actual opening of the file. If
411 * successful, it (1) truncates the file if open->op_truncate was
412 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
413 */
414 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
415 WARN_ON(status && open->op_created);
416 out:
417 nfsd4_cleanup_open_state(open, status);
418 if (open->op_openowner)
419 cstate->replay_owner = &open->op_openowner->oo_owner;
420 else
421 nfs4_unlock_state();
422 return status;
423 }
424
425 /*
426 * filehandle-manipulating ops.
427 */
428 static __be32
429 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
430 struct svc_fh **getfh)
431 {
432 if (!cstate->current_fh.fh_dentry)
433 return nfserr_nofilehandle;
434
435 *getfh = &cstate->current_fh;
436 return nfs_ok;
437 }
438
439 static __be32
440 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
441 struct nfsd4_putfh *putfh)
442 {
443 fh_put(&cstate->current_fh);
444 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
445 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
446 putfh->pf_fhlen);
447 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
448 }
449
450 static __be32
451 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
452 void *arg)
453 {
454 __be32 status;
455
456 fh_put(&cstate->current_fh);
457 status = exp_pseudoroot(rqstp, &cstate->current_fh);
458 return status;
459 }
460
461 static __be32
462 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
463 void *arg)
464 {
465 if (!cstate->save_fh.fh_dentry)
466 return nfserr_restorefh;
467
468 fh_dup2(&cstate->current_fh, &cstate->save_fh);
469 return nfs_ok;
470 }
471
472 static __be32
473 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
474 void *arg)
475 {
476 if (!cstate->current_fh.fh_dentry)
477 return nfserr_nofilehandle;
478
479 fh_dup2(&cstate->save_fh, &cstate->current_fh);
480 return nfs_ok;
481 }
482
483 /*
484 * misc nfsv4 ops
485 */
486 static __be32
487 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
488 struct nfsd4_access *access)
489 {
490 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
491 return nfserr_inval;
492
493 access->ac_resp_access = access->ac_req_access;
494 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
495 &access->ac_supported);
496 }
497
498 static __be32
499 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
500 struct nfsd4_commit *commit)
501 {
502 u32 *p = (u32 *)commit->co_verf.data;
503 *p++ = nfssvc_boot.tv_sec;
504 *p++ = nfssvc_boot.tv_usec;
505
506 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
507 commit->co_count);
508 }
509
510 static __be32
511 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
512 struct nfsd4_create *create)
513 {
514 struct svc_fh resfh;
515 __be32 status;
516 dev_t rdev;
517
518 fh_init(&resfh, NFS4_FHSIZE);
519
520 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
521 NFSD_MAY_CREATE);
522 if (status)
523 return status;
524
525 status = check_attr_support(rqstp, cstate, create->cr_bmval,
526 nfsd_attrmask);
527 if (status)
528 return status;
529
530 switch (create->cr_type) {
531 case NF4LNK:
532 /* ugh! we have to null-terminate the linktext, or
533 * vfs_symlink() will choke. it is always safe to
534 * null-terminate by brute force, since at worst we
535 * will overwrite the first byte of the create namelen
536 * in the XDR buffer, which has already been extracted
537 * during XDR decode.
538 */
539 create->cr_linkname[create->cr_linklen] = 0;
540
541 status = nfsd_symlink(rqstp, &cstate->current_fh,
542 create->cr_name, create->cr_namelen,
543 create->cr_linkname, create->cr_linklen,
544 &resfh, &create->cr_iattr);
545 break;
546
547 case NF4BLK:
548 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
549 if (MAJOR(rdev) != create->cr_specdata1 ||
550 MINOR(rdev) != create->cr_specdata2)
551 return nfserr_inval;
552 status = nfsd_create(rqstp, &cstate->current_fh,
553 create->cr_name, create->cr_namelen,
554 &create->cr_iattr, S_IFBLK, rdev, &resfh);
555 break;
556
557 case NF4CHR:
558 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
559 if (MAJOR(rdev) != create->cr_specdata1 ||
560 MINOR(rdev) != create->cr_specdata2)
561 return nfserr_inval;
562 status = nfsd_create(rqstp, &cstate->current_fh,
563 create->cr_name, create->cr_namelen,
564 &create->cr_iattr,S_IFCHR, rdev, &resfh);
565 break;
566
567 case NF4SOCK:
568 status = nfsd_create(rqstp, &cstate->current_fh,
569 create->cr_name, create->cr_namelen,
570 &create->cr_iattr, S_IFSOCK, 0, &resfh);
571 break;
572
573 case NF4FIFO:
574 status = nfsd_create(rqstp, &cstate->current_fh,
575 create->cr_name, create->cr_namelen,
576 &create->cr_iattr, S_IFIFO, 0, &resfh);
577 break;
578
579 case NF4DIR:
580 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
581 status = nfsd_create(rqstp, &cstate->current_fh,
582 create->cr_name, create->cr_namelen,
583 &create->cr_iattr, S_IFDIR, 0, &resfh);
584 break;
585
586 default:
587 status = nfserr_badtype;
588 }
589
590 if (status)
591 goto out;
592
593 if (create->cr_acl != NULL)
594 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
595 create->cr_bmval);
596
597 fh_unlock(&cstate->current_fh);
598 set_change_info(&create->cr_cinfo, &cstate->current_fh);
599 fh_dup2(&cstate->current_fh, &resfh);
600 out:
601 fh_put(&resfh);
602 return status;
603 }
604
605 static __be32
606 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
607 struct nfsd4_getattr *getattr)
608 {
609 __be32 status;
610
611 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
612 if (status)
613 return status;
614
615 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
616 return nfserr_inval;
617
618 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
619 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
620 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
621
622 getattr->ga_fhp = &cstate->current_fh;
623 return nfs_ok;
624 }
625
626 static __be32
627 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
628 struct nfsd4_link *link)
629 {
630 __be32 status = nfserr_nofilehandle;
631
632 if (!cstate->save_fh.fh_dentry)
633 return status;
634 status = nfsd_link(rqstp, &cstate->current_fh,
635 link->li_name, link->li_namelen, &cstate->save_fh);
636 if (!status)
637 set_change_info(&link->li_cinfo, &cstate->current_fh);
638 return status;
639 }
640
641 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
642 {
643 struct svc_fh tmp_fh;
644 __be32 ret;
645
646 fh_init(&tmp_fh, NFS4_FHSIZE);
647 ret = exp_pseudoroot(rqstp, &tmp_fh);
648 if (ret)
649 return ret;
650 if (tmp_fh.fh_dentry == fh->fh_dentry) {
651 fh_put(&tmp_fh);
652 return nfserr_noent;
653 }
654 fh_put(&tmp_fh);
655 return nfsd_lookup(rqstp, fh, "..", 2, fh);
656 }
657
658 static __be32
659 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
660 void *arg)
661 {
662 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
663 }
664
665 static __be32
666 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
667 struct nfsd4_lookup *lookup)
668 {
669 return nfsd_lookup(rqstp, &cstate->current_fh,
670 lookup->lo_name, lookup->lo_len,
671 &cstate->current_fh);
672 }
673
674 static __be32
675 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
676 struct nfsd4_read *read)
677 {
678 __be32 status;
679
680 /* no need to check permission - this will be done in nfsd_read() */
681
682 read->rd_filp = NULL;
683 if (read->rd_offset >= OFFSET_MAX)
684 return nfserr_inval;
685
686 nfs4_lock_state();
687 /* check stateid */
688 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
689 RD_STATE, &read->rd_filp))) {
690 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
691 goto out;
692 }
693 if (read->rd_filp)
694 get_file(read->rd_filp);
695 status = nfs_ok;
696 out:
697 nfs4_unlock_state();
698 read->rd_rqstp = rqstp;
699 read->rd_fhp = &cstate->current_fh;
700 return status;
701 }
702
703 static __be32
704 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
705 struct nfsd4_readdir *readdir)
706 {
707 u64 cookie = readdir->rd_cookie;
708 static const nfs4_verifier zeroverf;
709
710 /* no need to check permission - this will be done in nfsd_readdir() */
711
712 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
713 return nfserr_inval;
714
715 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
716 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
717 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
718
719 if ((cookie == 1) || (cookie == 2) ||
720 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
721 return nfserr_bad_cookie;
722
723 readdir->rd_rqstp = rqstp;
724 readdir->rd_fhp = &cstate->current_fh;
725 return nfs_ok;
726 }
727
728 static __be32
729 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
730 struct nfsd4_readlink *readlink)
731 {
732 readlink->rl_rqstp = rqstp;
733 readlink->rl_fhp = &cstate->current_fh;
734 return nfs_ok;
735 }
736
737 static __be32
738 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
739 struct nfsd4_remove *remove)
740 {
741 __be32 status;
742
743 if (locks_in_grace())
744 return nfserr_grace;
745 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
746 remove->rm_name, remove->rm_namelen);
747 if (!status) {
748 fh_unlock(&cstate->current_fh);
749 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
750 }
751 return status;
752 }
753
754 static __be32
755 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
756 struct nfsd4_rename *rename)
757 {
758 __be32 status = nfserr_nofilehandle;
759
760 if (!cstate->save_fh.fh_dentry)
761 return status;
762 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
763 & NFSEXP_NOSUBTREECHECK))
764 return nfserr_grace;
765 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
766 rename->rn_snamelen, &cstate->current_fh,
767 rename->rn_tname, rename->rn_tnamelen);
768
769 /* the underlying filesystem returns different error's than required
770 * by NFSv4. both save_fh and current_fh have been verified.. */
771 if (status == nfserr_isdir)
772 status = nfserr_exist;
773 else if ((status == nfserr_notdir) &&
774 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
775 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
776 status = nfserr_exist;
777
778 if (!status) {
779 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
780 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
781 }
782 return status;
783 }
784
785 static __be32
786 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
787 struct nfsd4_secinfo *secinfo)
788 {
789 struct svc_fh resfh;
790 struct svc_export *exp;
791 struct dentry *dentry;
792 __be32 err;
793
794 fh_init(&resfh, NFS4_FHSIZE);
795 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
796 if (err)
797 return err;
798 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
799 secinfo->si_name, secinfo->si_namelen,
800 &exp, &dentry);
801 if (err)
802 return err;
803 if (dentry->d_inode == NULL) {
804 exp_put(exp);
805 err = nfserr_noent;
806 } else
807 secinfo->si_exp = exp;
808 dput(dentry);
809 if (cstate->minorversion)
810 /* See rfc 5661 section 2.6.3.1.1.8 */
811 fh_put(&cstate->current_fh);
812 return err;
813 }
814
815 static __be32
816 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
817 struct nfsd4_secinfo_no_name *sin)
818 {
819 __be32 err;
820
821 switch (sin->sin_style) {
822 case NFS4_SECINFO_STYLE4_CURRENT_FH:
823 break;
824 case NFS4_SECINFO_STYLE4_PARENT:
825 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
826 if (err)
827 return err;
828 break;
829 default:
830 return nfserr_inval;
831 }
832 exp_get(cstate->current_fh.fh_export);
833 sin->sin_exp = cstate->current_fh.fh_export;
834 fh_put(&cstate->current_fh);
835 return nfs_ok;
836 }
837
838 static __be32
839 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
840 struct nfsd4_setattr *setattr)
841 {
842 __be32 status = nfs_ok;
843 int err;
844
845 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
846 nfs4_lock_state();
847 status = nfs4_preprocess_stateid_op(cstate,
848 &setattr->sa_stateid, WR_STATE, NULL);
849 nfs4_unlock_state();
850 if (status) {
851 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
852 return status;
853 }
854 }
855 err = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
856 if (err)
857 return nfserrno(err);
858 status = nfs_ok;
859
860 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
861 nfsd_attrmask);
862 if (status)
863 goto out;
864
865 if (setattr->sa_acl != NULL)
866 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
867 setattr->sa_acl);
868 if (status)
869 goto out;
870 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
871 0, (time_t)0);
872 out:
873 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
874 return status;
875 }
876
877 static __be32
878 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
879 struct nfsd4_write *write)
880 {
881 stateid_t *stateid = &write->wr_stateid;
882 struct file *filp = NULL;
883 u32 *p;
884 __be32 status = nfs_ok;
885 unsigned long cnt;
886
887 /* no need to check permission - this will be done in nfsd_write() */
888
889 if (write->wr_offset >= OFFSET_MAX)
890 return nfserr_inval;
891
892 nfs4_lock_state();
893 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
894 if (status) {
895 nfs4_unlock_state();
896 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
897 return status;
898 }
899 if (filp)
900 get_file(filp);
901 nfs4_unlock_state();
902
903 cnt = write->wr_buflen;
904 write->wr_how_written = write->wr_stable_how;
905 p = (u32 *)write->wr_verifier.data;
906 *p++ = nfssvc_boot.tv_sec;
907 *p++ = nfssvc_boot.tv_usec;
908
909 status = nfsd_write(rqstp, &cstate->current_fh, filp,
910 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
911 &cnt, &write->wr_how_written);
912 if (filp)
913 fput(filp);
914
915 write->wr_bytes_written = cnt;
916
917 return status;
918 }
919
920 /* This routine never returns NFS_OK! If there are no other errors, it
921 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
922 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
923 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
924 */
925 static __be32
926 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
927 struct nfsd4_verify *verify)
928 {
929 __be32 *buf, *p;
930 int count;
931 __be32 status;
932
933 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
934 if (status)
935 return status;
936
937 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
938 if (status)
939 return status;
940
941 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
942 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
943 return nfserr_inval;
944 if (verify->ve_attrlen & 3)
945 return nfserr_inval;
946
947 /* count in words:
948 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
949 */
950 count = 4 + (verify->ve_attrlen >> 2);
951 buf = kmalloc(count << 2, GFP_KERNEL);
952 if (!buf)
953 return nfserr_jukebox;
954
955 status = nfsd4_encode_fattr(&cstate->current_fh,
956 cstate->current_fh.fh_export,
957 cstate->current_fh.fh_dentry, buf,
958 &count, verify->ve_bmval,
959 rqstp, 0);
960
961 /* this means that nfsd4_encode_fattr() ran out of space */
962 if (status == nfserr_resource && count == 0)
963 status = nfserr_not_same;
964 if (status)
965 goto out_kfree;
966
967 /* skip bitmap */
968 p = buf + 1 + ntohl(buf[0]);
969 status = nfserr_not_same;
970 if (ntohl(*p++) != verify->ve_attrlen)
971 goto out_kfree;
972 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
973 status = nfserr_same;
974
975 out_kfree:
976 kfree(buf);
977 return status;
978 }
979
980 static __be32
981 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
982 struct nfsd4_verify *verify)
983 {
984 __be32 status;
985
986 status = _nfsd4_verify(rqstp, cstate, verify);
987 return status == nfserr_not_same ? nfs_ok : status;
988 }
989
990 static __be32
991 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
992 struct nfsd4_verify *verify)
993 {
994 __be32 status;
995
996 status = _nfsd4_verify(rqstp, cstate, verify);
997 return status == nfserr_same ? nfs_ok : status;
998 }
999
1000 /*
1001 * NULL call.
1002 */
1003 static __be32
1004 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1005 {
1006 return nfs_ok;
1007 }
1008
1009 static inline void nfsd4_increment_op_stats(u32 opnum)
1010 {
1011 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1012 nfsdstats.nfs4_opcount[opnum]++;
1013 }
1014
1015 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1016 void *);
1017 typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
1018
1019 enum nfsd4_op_flags {
1020 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
1021 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1022 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
1023 /* For rfc 5661 section 2.6.3.1.1: */
1024 OP_HANDLES_WRONGSEC = 1 << 3,
1025 OP_IS_PUTFH_LIKE = 1 << 4,
1026 /*
1027 * These are the ops whose result size we estimate before
1028 * encoding, to avoid performing an op then not being able to
1029 * respond or cache a response. This includes writes and setattrs
1030 * as well as the operations usually called "nonidempotent":
1031 */
1032 OP_MODIFIES_SOMETHING = 1 << 5,
1033 /*
1034 * Cache compounds containing these ops in the xid-based drc:
1035 * We use the DRC for compounds containing non-idempotent
1036 * operations, *except* those that are 4.1-specific (since
1037 * sessions provide their own EOS), and except for stateful
1038 * operations other than setclientid and setclientid_confirm
1039 * (since sequence numbers provide EOS for open, lock, etc in
1040 * the v4.0 case).
1041 */
1042 OP_CACHEME = 1 << 6,
1043 };
1044
1045 struct nfsd4_operation {
1046 nfsd4op_func op_func;
1047 u32 op_flags;
1048 char *op_name;
1049 /* Try to get response size before operation */
1050 nfsd4op_rsize op_rsize_bop;
1051 };
1052
1053 static struct nfsd4_operation nfsd4_ops[];
1054
1055 static const char *nfsd4_op_name(unsigned opnum);
1056
1057 /*
1058 * Enforce NFSv4.1 COMPOUND ordering rules:
1059 *
1060 * Also note, enforced elsewhere:
1061 * - SEQUENCE other than as first op results in
1062 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1063 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1064 * (Enforced in nfsd4_bind_conn_to_session().)
1065 * - DESTROY_SESSION must be the final operation in a compound, if
1066 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1067 * (Enforced in nfsd4_destroy_session().)
1068 */
1069 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
1070 {
1071 struct nfsd4_op *op = &args->ops[0];
1072
1073 /* These ordering requirements don't apply to NFSv4.0: */
1074 if (args->minorversion == 0)
1075 return nfs_ok;
1076 /* This is weird, but OK, not our problem: */
1077 if (args->opcnt == 0)
1078 return nfs_ok;
1079 if (op->status == nfserr_op_illegal)
1080 return nfs_ok;
1081 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1082 return nfserr_op_not_in_session;
1083 if (op->opnum == OP_SEQUENCE)
1084 return nfs_ok;
1085 if (args->opcnt != 1)
1086 return nfserr_not_only_op;
1087 return nfs_ok;
1088 }
1089
1090 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1091 {
1092 return &nfsd4_ops[op->opnum];
1093 }
1094
1095 bool nfsd4_cache_this_op(struct nfsd4_op *op)
1096 {
1097 return OPDESC(op)->op_flags & OP_CACHEME;
1098 }
1099
1100 static bool need_wrongsec_check(struct svc_rqst *rqstp)
1101 {
1102 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1103 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1104 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1105 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1106 struct nfsd4_operation *thisd;
1107 struct nfsd4_operation *nextd;
1108
1109 thisd = OPDESC(this);
1110 /*
1111 * Most ops check wronsec on our own; only the putfh-like ops
1112 * have special rules.
1113 */
1114 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1115 return false;
1116 /*
1117 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1118 * put-filehandle operation if we're not going to use the
1119 * result:
1120 */
1121 if (argp->opcnt == resp->opcnt)
1122 return false;
1123
1124 nextd = OPDESC(next);
1125 /*
1126 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1127 * errors themselves as necessary; others should check for them
1128 * now:
1129 */
1130 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1131 }
1132
1133 /*
1134 * COMPOUND call.
1135 */
1136 static __be32
1137 nfsd4_proc_compound(struct svc_rqst *rqstp,
1138 struct nfsd4_compoundargs *args,
1139 struct nfsd4_compoundres *resp)
1140 {
1141 struct nfsd4_op *op;
1142 struct nfsd4_operation *opdesc;
1143 struct nfsd4_compound_state *cstate = &resp->cstate;
1144 int slack_bytes;
1145 u32 plen = 0;
1146 __be32 status;
1147
1148 resp->xbuf = &rqstp->rq_res;
1149 resp->p = rqstp->rq_res.head[0].iov_base +
1150 rqstp->rq_res.head[0].iov_len;
1151 resp->tagp = resp->p;
1152 /* reserve space for: taglen, tag, and opcnt */
1153 resp->p += 2 + XDR_QUADLEN(args->taglen);
1154 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1155 resp->taglen = args->taglen;
1156 resp->tag = args->tag;
1157 resp->opcnt = 0;
1158 resp->rqstp = rqstp;
1159 resp->cstate.minorversion = args->minorversion;
1160 resp->cstate.replay_owner = NULL;
1161 resp->cstate.session = NULL;
1162 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1163 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
1164 /*
1165 * Don't use the deferral mechanism for NFSv4; compounds make it
1166 * too hard to avoid non-idempotency problems.
1167 */
1168 rqstp->rq_usedeferral = 0;
1169
1170 /*
1171 * According to RFC3010, this takes precedence over all other errors.
1172 */
1173 status = nfserr_minor_vers_mismatch;
1174 if (args->minorversion > nfsd_supported_minorversion)
1175 goto out;
1176
1177 status = nfs41_check_op_ordering(args);
1178 if (status) {
1179 op = &args->ops[0];
1180 op->status = status;
1181 goto encode_op;
1182 }
1183
1184 while (!status && resp->opcnt < args->opcnt) {
1185 op = &args->ops[resp->opcnt++];
1186
1187 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1188 resp->opcnt, args->opcnt, op->opnum,
1189 nfsd4_op_name(op->opnum));
1190 /*
1191 * The XDR decode routines may have pre-set op->status;
1192 * for example, if there is a miscellaneous XDR error
1193 * it will be set to nfserr_bad_xdr.
1194 */
1195 if (op->status)
1196 goto encode_op;
1197
1198 /* We must be able to encode a successful response to
1199 * this operation, with enough room left over to encode a
1200 * failed response to the next operation. If we don't
1201 * have enough room, fail with ERR_RESOURCE.
1202 */
1203 slack_bytes = (char *)resp->end - (char *)resp->p;
1204 if (slack_bytes < COMPOUND_SLACK_SPACE
1205 + COMPOUND_ERR_SLACK_SPACE) {
1206 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
1207 op->status = nfserr_resource;
1208 goto encode_op;
1209 }
1210
1211 opdesc = OPDESC(op);
1212
1213 if (!cstate->current_fh.fh_dentry) {
1214 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1215 op->status = nfserr_nofilehandle;
1216 goto encode_op;
1217 }
1218 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1219 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1220 op->status = nfserr_moved;
1221 goto encode_op;
1222 }
1223
1224 /* If op is non-idempotent */
1225 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1226 plen = opdesc->op_rsize_bop(rqstp, op);
1227 /*
1228 * If there's still another operation, make sure
1229 * we'll have space to at least encode an error:
1230 */
1231 if (resp->opcnt < args->opcnt)
1232 plen += COMPOUND_ERR_SLACK_SPACE;
1233 op->status = nfsd4_check_resp_size(resp, plen);
1234 }
1235
1236 if (op->status)
1237 goto encode_op;
1238
1239 if (opdesc->op_func)
1240 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1241 else
1242 BUG_ON(op->status == nfs_ok);
1243
1244 if (!op->status && need_wrongsec_check(rqstp))
1245 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1246
1247 encode_op:
1248 /* Only from SEQUENCE */
1249 if (resp->cstate.status == nfserr_replay_cache) {
1250 dprintk("%s NFS4.1 replay from cache\n", __func__);
1251 status = op->status;
1252 goto out;
1253 }
1254 if (op->status == nfserr_replay_me) {
1255 op->replay = &cstate->replay_owner->so_replay;
1256 nfsd4_encode_replay(resp, op);
1257 status = op->status = op->replay->rp_status;
1258 } else {
1259 nfsd4_encode_operation(resp, op);
1260 status = op->status;
1261 }
1262
1263 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1264 args->ops, args->opcnt, resp->opcnt, op->opnum,
1265 be32_to_cpu(status));
1266
1267 if (cstate->replay_owner) {
1268 nfs4_unlock_state();
1269 cstate->replay_owner = NULL;
1270 }
1271 /* XXX Ugh, we need to get rid of this kind of special case: */
1272 if (op->opnum == OP_READ && op->u.read.rd_filp)
1273 fput(op->u.read.rd_filp);
1274
1275 nfsd4_increment_op_stats(op->opnum);
1276 }
1277
1278 resp->cstate.status = status;
1279 fh_put(&resp->cstate.current_fh);
1280 fh_put(&resp->cstate.save_fh);
1281 BUG_ON(resp->cstate.replay_owner);
1282 out:
1283 /* Reset deferral mechanism for RPC deferrals */
1284 rqstp->rq_usedeferral = 1;
1285 dprintk("nfsv4 compound returned %d\n", ntohl(status));
1286 return status;
1287 }
1288
1289 #define op_encode_hdr_size (2)
1290 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1291 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1292 #define op_encode_change_info_maxsz (5)
1293 #define nfs4_fattr_bitmap_maxsz (4)
1294
1295 #define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1296 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1297
1298 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1299
1300 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1301 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1302 op_encode_ace_maxsz)
1303
1304 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1305
1306 static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1307 {
1308 return (op_encode_hdr_size) * sizeof(__be32);
1309 }
1310
1311 static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1312 {
1313 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1314 }
1315
1316 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1317 {
1318 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1319 }
1320
1321 static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1322 {
1323 return (op_encode_hdr_size + op_encode_change_info_maxsz
1324 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1325 }
1326
1327 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1328 {
1329 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1330 * sizeof(__be32);
1331 }
1332
1333 static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1334 {
1335 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1336 * sizeof(__be32);
1337 }
1338
1339 static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1340 {
1341 return (op_encode_hdr_size + op_encode_stateid_maxsz
1342 + op_encode_change_info_maxsz + 1
1343 + nfs4_fattr_bitmap_maxsz
1344 + op_encode_delegation_maxsz) * sizeof(__be32);
1345 }
1346
1347 static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1348 {
1349 u32 maxcount = 0, rlen = 0;
1350
1351 maxcount = svc_max_payload(rqstp);
1352 rlen = op->u.read.rd_length;
1353
1354 if (rlen > maxcount)
1355 rlen = maxcount;
1356
1357 return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
1358 }
1359
1360 static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1361 {
1362 u32 rlen = op->u.readdir.rd_maxcount;
1363
1364 if (rlen > PAGE_SIZE)
1365 rlen = PAGE_SIZE;
1366
1367 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1368 * sizeof(__be32) + rlen;
1369 }
1370
1371 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1372 {
1373 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1374 * sizeof(__be32);
1375 }
1376
1377 static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1378 {
1379 return (op_encode_hdr_size + op_encode_change_info_maxsz
1380 + op_encode_change_info_maxsz) * sizeof(__be32);
1381 }
1382
1383 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1384 {
1385 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1386 }
1387
1388 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1389 {
1390 return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
1391 sizeof(__be32);
1392 }
1393
1394 static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1395 {
1396 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1397 }
1398
1399 static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1400 {
1401 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1402 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1403 2 + /*eir_server_owner.so_minor_id */\
1404 /* eir_server_owner.so_major_id<> */\
1405 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1406 /* eir_server_scope<> */\
1407 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1408 1 + /* eir_server_impl_id array length */\
1409 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1410 }
1411
1412 static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1413 {
1414 return (op_encode_hdr_size + \
1415 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1416 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1417 }
1418
1419 static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1420 {
1421 return (op_encode_hdr_size + \
1422 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1423 2 + /* csr_sequence, csr_flags */\
1424 op_encode_channel_attrs_maxsz + \
1425 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1426 }
1427
1428 static struct nfsd4_operation nfsd4_ops[] = {
1429 [OP_ACCESS] = {
1430 .op_func = (nfsd4op_func)nfsd4_access,
1431 .op_name = "OP_ACCESS",
1432 },
1433 [OP_CLOSE] = {
1434 .op_func = (nfsd4op_func)nfsd4_close,
1435 .op_flags = OP_MODIFIES_SOMETHING,
1436 .op_name = "OP_CLOSE",
1437 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1438 },
1439 [OP_COMMIT] = {
1440 .op_func = (nfsd4op_func)nfsd4_commit,
1441 .op_flags = OP_MODIFIES_SOMETHING,
1442 .op_name = "OP_COMMIT",
1443 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
1444 },
1445 [OP_CREATE] = {
1446 .op_func = (nfsd4op_func)nfsd4_create,
1447 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1448 .op_name = "OP_CREATE",
1449 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
1450 },
1451 [OP_DELEGRETURN] = {
1452 .op_func = (nfsd4op_func)nfsd4_delegreturn,
1453 .op_flags = OP_MODIFIES_SOMETHING,
1454 .op_name = "OP_DELEGRETURN",
1455 .op_rsize_bop = nfsd4_only_status_rsize,
1456 },
1457 [OP_GETATTR] = {
1458 .op_func = (nfsd4op_func)nfsd4_getattr,
1459 .op_flags = ALLOWED_ON_ABSENT_FS,
1460 .op_name = "OP_GETATTR",
1461 },
1462 [OP_GETFH] = {
1463 .op_func = (nfsd4op_func)nfsd4_getfh,
1464 .op_name = "OP_GETFH",
1465 },
1466 [OP_LINK] = {
1467 .op_func = (nfsd4op_func)nfsd4_link,
1468 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1469 | OP_CACHEME,
1470 .op_name = "OP_LINK",
1471 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
1472 },
1473 [OP_LOCK] = {
1474 .op_func = (nfsd4op_func)nfsd4_lock,
1475 .op_flags = OP_MODIFIES_SOMETHING,
1476 .op_name = "OP_LOCK",
1477 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
1478 },
1479 [OP_LOCKT] = {
1480 .op_func = (nfsd4op_func)nfsd4_lockt,
1481 .op_name = "OP_LOCKT",
1482 },
1483 [OP_LOCKU] = {
1484 .op_func = (nfsd4op_func)nfsd4_locku,
1485 .op_flags = OP_MODIFIES_SOMETHING,
1486 .op_name = "OP_LOCKU",
1487 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1488 },
1489 [OP_LOOKUP] = {
1490 .op_func = (nfsd4op_func)nfsd4_lookup,
1491 .op_flags = OP_HANDLES_WRONGSEC,
1492 .op_name = "OP_LOOKUP",
1493 },
1494 [OP_LOOKUPP] = {
1495 .op_func = (nfsd4op_func)nfsd4_lookupp,
1496 .op_flags = OP_HANDLES_WRONGSEC,
1497 .op_name = "OP_LOOKUPP",
1498 },
1499 [OP_NVERIFY] = {
1500 .op_func = (nfsd4op_func)nfsd4_nverify,
1501 .op_name = "OP_NVERIFY",
1502 },
1503 [OP_OPEN] = {
1504 .op_func = (nfsd4op_func)nfsd4_open,
1505 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1506 .op_name = "OP_OPEN",
1507 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
1508 },
1509 [OP_OPEN_CONFIRM] = {
1510 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1511 .op_flags = OP_MODIFIES_SOMETHING,
1512 .op_name = "OP_OPEN_CONFIRM",
1513 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1514 },
1515 [OP_OPEN_DOWNGRADE] = {
1516 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1517 .op_flags = OP_MODIFIES_SOMETHING,
1518 .op_name = "OP_OPEN_DOWNGRADE",
1519 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1520 },
1521 [OP_PUTFH] = {
1522 .op_func = (nfsd4op_func)nfsd4_putfh,
1523 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1524 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1525 .op_name = "OP_PUTFH",
1526 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1527 },
1528 [OP_PUTPUBFH] = {
1529 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1530 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1531 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1532 .op_name = "OP_PUTPUBFH",
1533 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1534 },
1535 [OP_PUTROOTFH] = {
1536 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1537 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1538 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1539 .op_name = "OP_PUTROOTFH",
1540 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1541 },
1542 [OP_READ] = {
1543 .op_func = (nfsd4op_func)nfsd4_read,
1544 .op_flags = OP_MODIFIES_SOMETHING,
1545 .op_name = "OP_READ",
1546 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
1547 },
1548 [OP_READDIR] = {
1549 .op_func = (nfsd4op_func)nfsd4_readdir,
1550 .op_flags = OP_MODIFIES_SOMETHING,
1551 .op_name = "OP_READDIR",
1552 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
1553 },
1554 [OP_READLINK] = {
1555 .op_func = (nfsd4op_func)nfsd4_readlink,
1556 .op_name = "OP_READLINK",
1557 },
1558 [OP_REMOVE] = {
1559 .op_func = (nfsd4op_func)nfsd4_remove,
1560 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1561 .op_name = "OP_REMOVE",
1562 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
1563 },
1564 [OP_RENAME] = {
1565 .op_func = (nfsd4op_func)nfsd4_rename,
1566 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1567 .op_name = "OP_RENAME",
1568 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
1569 },
1570 [OP_RENEW] = {
1571 .op_func = (nfsd4op_func)nfsd4_renew,
1572 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1573 | OP_MODIFIES_SOMETHING,
1574 .op_name = "OP_RENEW",
1575 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1576
1577 },
1578 [OP_RESTOREFH] = {
1579 .op_func = (nfsd4op_func)nfsd4_restorefh,
1580 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1581 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1582 .op_name = "OP_RESTOREFH",
1583 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1584 },
1585 [OP_SAVEFH] = {
1586 .op_func = (nfsd4op_func)nfsd4_savefh,
1587 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1588 .op_name = "OP_SAVEFH",
1589 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1590 },
1591 [OP_SECINFO] = {
1592 .op_func = (nfsd4op_func)nfsd4_secinfo,
1593 .op_flags = OP_HANDLES_WRONGSEC,
1594 .op_name = "OP_SECINFO",
1595 },
1596 [OP_SETATTR] = {
1597 .op_func = (nfsd4op_func)nfsd4_setattr,
1598 .op_name = "OP_SETATTR",
1599 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1600 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
1601 },
1602 [OP_SETCLIENTID] = {
1603 .op_func = (nfsd4op_func)nfsd4_setclientid,
1604 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1605 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1606 .op_name = "OP_SETCLIENTID",
1607 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
1608 },
1609 [OP_SETCLIENTID_CONFIRM] = {
1610 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1611 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1612 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1613 .op_name = "OP_SETCLIENTID_CONFIRM",
1614 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1615 },
1616 [OP_VERIFY] = {
1617 .op_func = (nfsd4op_func)nfsd4_verify,
1618 .op_name = "OP_VERIFY",
1619 },
1620 [OP_WRITE] = {
1621 .op_func = (nfsd4op_func)nfsd4_write,
1622 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1623 .op_name = "OP_WRITE",
1624 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1625 },
1626 [OP_RELEASE_LOCKOWNER] = {
1627 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1628 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1629 | OP_MODIFIES_SOMETHING,
1630 .op_name = "OP_RELEASE_LOCKOWNER",
1631 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1632 },
1633
1634 /* NFSv4.1 operations */
1635 [OP_EXCHANGE_ID] = {
1636 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1637 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1638 | OP_MODIFIES_SOMETHING,
1639 .op_name = "OP_EXCHANGE_ID",
1640 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
1641 },
1642 [OP_BIND_CONN_TO_SESSION] = {
1643 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1644 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1645 | OP_MODIFIES_SOMETHING,
1646 .op_name = "OP_BIND_CONN_TO_SESSION",
1647 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
1648 },
1649 [OP_CREATE_SESSION] = {
1650 .op_func = (nfsd4op_func)nfsd4_create_session,
1651 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1652 | OP_MODIFIES_SOMETHING,
1653 .op_name = "OP_CREATE_SESSION",
1654 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
1655 },
1656 [OP_DESTROY_SESSION] = {
1657 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1658 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1659 | OP_MODIFIES_SOMETHING,
1660 .op_name = "OP_DESTROY_SESSION",
1661 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1662 },
1663 [OP_SEQUENCE] = {
1664 .op_func = (nfsd4op_func)nfsd4_sequence,
1665 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1666 .op_name = "OP_SEQUENCE",
1667 },
1668 [OP_DESTROY_CLIENTID] = {
1669 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
1670 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1671 | OP_MODIFIES_SOMETHING,
1672 .op_name = "OP_DESTROY_CLIENTID",
1673 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1674 },
1675 [OP_RECLAIM_COMPLETE] = {
1676 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1677 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1678 .op_name = "OP_RECLAIM_COMPLETE",
1679 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1680 },
1681 [OP_SECINFO_NO_NAME] = {
1682 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
1683 .op_flags = OP_HANDLES_WRONGSEC,
1684 .op_name = "OP_SECINFO_NO_NAME",
1685 },
1686 [OP_TEST_STATEID] = {
1687 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1688 .op_flags = ALLOWED_WITHOUT_FH,
1689 .op_name = "OP_TEST_STATEID",
1690 },
1691 [OP_FREE_STATEID] = {
1692 .op_func = (nfsd4op_func)nfsd4_free_stateid,
1693 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1694 .op_name = "OP_FREE_STATEID",
1695 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1696 },
1697 };
1698
1699 static const char *nfsd4_op_name(unsigned opnum)
1700 {
1701 if (opnum < ARRAY_SIZE(nfsd4_ops))
1702 return nfsd4_ops[opnum].op_name;
1703 return "unknown_operation";
1704 }
1705
1706 #define nfsd4_voidres nfsd4_voidargs
1707 struct nfsd4_voidargs { int dummy; };
1708
1709 static struct svc_procedure nfsd_procedures4[2] = {
1710 [NFSPROC4_NULL] = {
1711 .pc_func = (svc_procfunc) nfsd4_proc_null,
1712 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1713 .pc_argsize = sizeof(struct nfsd4_voidargs),
1714 .pc_ressize = sizeof(struct nfsd4_voidres),
1715 .pc_cachetype = RC_NOCACHE,
1716 .pc_xdrressize = 1,
1717 },
1718 [NFSPROC4_COMPOUND] = {
1719 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1720 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1721 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1722 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1723 .pc_ressize = sizeof(struct nfsd4_compoundres),
1724 .pc_release = nfsd4_release_compoundargs,
1725 .pc_cachetype = RC_NOCACHE,
1726 .pc_xdrressize = NFSD_BUFSIZE/4,
1727 },
1728 };
1729
1730 struct svc_version nfsd_version4 = {
1731 .vs_vers = 4,
1732 .vs_nproc = 2,
1733 .vs_proc = nfsd_procedures4,
1734 .vs_dispatch = nfsd_dispatch,
1735 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1736 };
1737
1738 /*
1739 * Local variables:
1740 * c-basic-offset: 8
1741 * End:
1742 */
Linux with added FPC-III support