?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh
[linux/fpc-iii.git] / fs / nfsd / nfs4proc.c
blob987e719fbae8c64f2776f914e7f4104ee04be492
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 #include "current_stateid.h"
43
44 #define NFSDDBG_FACILITY NFSDDBG_PROC
45
46 static u32 nfsd_attrmask[] = {
47 NFSD_WRITEABLE_ATTRS_WORD0,
48 NFSD_WRITEABLE_ATTRS_WORD1,
49 NFSD_WRITEABLE_ATTRS_WORD2
50 };
51
52 static u32 nfsd41_ex_attrmask[] = {
53 NFSD_SUPPATTR_EXCLCREAT_WORD0,
54 NFSD_SUPPATTR_EXCLCREAT_WORD1,
55 NFSD_SUPPATTR_EXCLCREAT_WORD2
56 };
57
58 static __be32
59 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
60 u32 *bmval, u32 *writable)
61 {
62 struct dentry *dentry = cstate->current_fh.fh_dentry;
63
64 /*
65 * Check about attributes are supported by the NFSv4 server or not.
66 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
67 */
68 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
69 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
70 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
71 return nfserr_attrnotsupp;
72
73 /*
74 * Check FATTR4_WORD0_ACL can be supported
75 * in current environment or not.
76 */
77 if (bmval[0] & FATTR4_WORD0_ACL) {
78 if (!IS_POSIXACL(dentry->d_inode))
79 return nfserr_attrnotsupp;
80 }
81
82 /*
83 * According to spec, read-only attributes return ERR_INVAL.
84 */
85 if (writable) {
86 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
87 (bmval[2] & ~writable[2]))
88 return nfserr_inval;
89 }
90
91 return nfs_ok;
92 }
93
94 static __be32
95 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
96 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
97 {
98 __be32 status = nfs_ok;
99
100 if (open->op_create == NFS4_OPEN_CREATE) {
101 if (open->op_createmode == NFS4_CREATE_UNCHECKED
102 || open->op_createmode == NFS4_CREATE_GUARDED)
103 status = check_attr_support(rqstp, cstate,
104 open->op_bmval, nfsd_attrmask);
105 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
106 status = check_attr_support(rqstp, cstate,
107 open->op_bmval, nfsd41_ex_attrmask);
108 }
109
110 return status;
111 }
112
113 static int
114 is_create_with_attrs(struct nfsd4_open *open)
115 {
116 return open->op_create == NFS4_OPEN_CREATE
117 && (open->op_createmode == NFS4_CREATE_UNCHECKED
118 || open->op_createmode == NFS4_CREATE_GUARDED
119 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
120 }
121
122 /*
123 * if error occurs when setting the acl, just clear the acl bit
124 * in the returned attr bitmap.
125 */
126 static void
127 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
128 struct nfs4_acl *acl, u32 *bmval)
129 {
130 __be32 status;
131
132 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
133 if (status)
134 /*
135 * We should probably fail the whole open at this point,
136 * but we've already created the file, so it's too late;
137 * So this seems the least of evils:
138 */
139 bmval[0] &= ~FATTR4_WORD0_ACL;
140 }
141
142 static inline void
143 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
144 {
145 fh_put(dst);
146 dget(src->fh_dentry);
147 if (src->fh_export)
148 cache_get(&src->fh_export->h);
149 *dst = *src;
150 }
151
152 static __be32
153 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
154 {
155 __be32 status;
156
157 if (open->op_truncate &&
158 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
159 return nfserr_inval;
160
161 accmode |= NFSD_MAY_READ_IF_EXEC;
162
163 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
164 accmode |= NFSD_MAY_READ;
165 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
166 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
167 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
168 accmode |= NFSD_MAY_WRITE;
169
170 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
171
172 return status;
173 }
174
175 static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
176 {
177 umode_t mode = fh->fh_dentry->d_inode->i_mode;
178
179 if (S_ISREG(mode))
180 return nfs_ok;
181 if (S_ISDIR(mode))
182 return nfserr_isdir;
183 /*
184 * Using err_symlink as our catch-all case may look odd; but
185 * there's no other obvious error for this case in 4.0, and we
186 * happen to know that it will cause the linux v4 client to do
187 * the right thing on attempts to open something other than a
188 * regular file.
189 */
190 return nfserr_symlink;
191 }
192
193 static __be32
194 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
195 {
196 struct svc_fh *resfh;
197 __be32 status;
198
199 resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
200 if (!resfh)
201 return nfserr_jukebox;
202 fh_init(resfh, NFS4_FHSIZE);
203 open->op_truncate = 0;
204
205 if (open->op_create) {
206 /* FIXME: check session persistence and pnfs flags.
207 * The nfsv4.1 spec requires the following semantics:
208 *
209 * Persistent | pNFS | Server REQUIRED | Client Allowed
210 * Reply Cache | server | |
211 * -------------+--------+-----------------+--------------------
212 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
213 * | | | (SHOULD)
214 * | | and EXCLUSIVE4 | or EXCLUSIVE4
215 * | | | (SHOULD NOT)
216 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
217 * yes | no | GUARDED4 | GUARDED4
218 * yes | yes | GUARDED4 | GUARDED4
219 */
220
221 /*
222 * Note: create modes (UNCHECKED,GUARDED...) are the same
223 * in NFSv4 as in v3 except EXCLUSIVE4_1.
224 */
225 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
226 open->op_fname.len, &open->op_iattr,
227 resfh, open->op_createmode,
228 (u32 *)open->op_verf.data,
229 &open->op_truncate, &open->op_created);
230
231 /*
232 * Following rfc 3530 14.2.16, use the returned bitmask
233 * to indicate which attributes we used to store the
234 * verifier:
235 */
236 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
237 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
238 FATTR4_WORD1_TIME_MODIFY);
239 } else {
240 status = nfsd_lookup(rqstp, current_fh,
241 open->op_fname.data, open->op_fname.len, resfh);
242 fh_unlock(current_fh);
243 }
244 if (status)
245 goto out;
246 status = nfsd_check_obj_isreg(resfh);
247 if (status)
248 goto out;
249
250 if (is_create_with_attrs(open) && open->op_acl != NULL)
251 do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval);
252
253 /* set reply cache */
254 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
255 &resfh->fh_handle);
256 if (!open->op_created)
257 status = do_open_permission(rqstp, resfh, open,
258 NFSD_MAY_NOP);
259 set_change_info(&open->op_cinfo, current_fh);
260 fh_dup2(current_fh, resfh);
261 out:
262 fh_put(resfh);
263 kfree(resfh);
264 return status;
265 }
266
267 static __be32
268 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
269 {
270 __be32 status;
271
272 /* We don't know the target directory, and therefore can not
273 * set the change info
274 */
275
276 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
277
278 /* set replay cache */
279 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
280 &current_fh->fh_handle);
281
282 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
283 (open->op_iattr.ia_size == 0);
284
285 status = do_open_permission(rqstp, current_fh, open,
286 NFSD_MAY_OWNER_OVERRIDE);
287
288 return status;
289 }
290
291 static void
292 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
293 {
294 struct nfsd4_sessionid *sid =
295 (struct nfsd4_sessionid *)session->se_sessionid.data;
296
297 clid->cl_boot = sid->clientid.cl_boot;
298 clid->cl_id = sid->clientid.cl_id;
299 }
300
301 static __be32
302 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
303 struct nfsd4_open *open)
304 {
305 __be32 status;
306 struct nfsd4_compoundres *resp;
307
308 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
309 (int)open->op_fname.len, open->op_fname.data,
310 open->op_openowner);
311
312 /* This check required by spec. */
313 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
314 return nfserr_inval;
315
316 open->op_created = 0;
317 /*
318 * RFC5661 18.51.3
319 * Before RECLAIM_COMPLETE done, server should deny new lock
320 */
321 if (nfsd4_has_session(cstate) &&
322 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
323 &cstate->session->se_client->cl_flags) &&
324 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
325 return nfserr_grace;
326
327 if (nfsd4_has_session(cstate))
328 copy_clientid(&open->op_clientid, cstate->session);
329
330 nfs4_lock_state();
331
332 /* check seqid for replay. set nfs4_owner */
333 resp = rqstp->rq_resp;
334 status = nfsd4_process_open1(&resp->cstate, open);
335 if (status == nfserr_replay_me) {
336 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
337 fh_put(&cstate->current_fh);
338 fh_copy_shallow(&cstate->current_fh.fh_handle,
339 &rp->rp_openfh);
340 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
341 if (status)
342 dprintk("nfsd4_open: replay failed"
343 " restoring previous filehandle\n");
344 else
345 status = nfserr_replay_me;
346 }
347 if (status)
348 goto out;
349
350 status = nfsd4_check_open_attributes(rqstp, cstate, open);
351 if (status)
352 goto out;
353
354 /* Openowner is now set, so sequence id will get bumped. Now we need
355 * these checks before we do any creates: */
356 status = nfserr_grace;
357 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
358 goto out;
359 status = nfserr_no_grace;
360 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
361 goto out;
362
363 switch (open->op_claim_type) {
364 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
365 case NFS4_OPEN_CLAIM_NULL:
366 status = do_open_lookup(rqstp, &cstate->current_fh,
367 open);
368 if (status)
369 goto out;
370 break;
371 case NFS4_OPEN_CLAIM_PREVIOUS:
372 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
373 status = nfs4_check_open_reclaim(&open->op_clientid);
374 if (status)
375 goto out;
376 case NFS4_OPEN_CLAIM_FH:
377 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
378 status = do_open_fhandle(rqstp, &cstate->current_fh,
379 open);
380 if (status)
381 goto out;
382 break;
383 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
384 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
385 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
386 dprintk("NFSD: unsupported OPEN claim type %d\n",
387 open->op_claim_type);
388 status = nfserr_notsupp;
389 goto out;
390 default:
391 dprintk("NFSD: Invalid OPEN claim type %d\n",
392 open->op_claim_type);
393 status = nfserr_inval;
394 goto out;
395 }
396 /*
397 * nfsd4_process_open2() does the actual opening of the file. If
398 * successful, it (1) truncates the file if open->op_truncate was
399 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
400 */
401 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
402 WARN_ON(status && open->op_created);
403 out:
404 nfsd4_cleanup_open_state(open, status);
405 if (open->op_openowner)
406 cstate->replay_owner = &open->op_openowner->oo_owner;
407 else
408 nfs4_unlock_state();
409 return status;
410 }
411
412 /*
413 * filehandle-manipulating ops.
414 */
415 static __be32
416 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
417 struct svc_fh **getfh)
418 {
419 if (!cstate->current_fh.fh_dentry)
420 return nfserr_nofilehandle;
421
422 *getfh = &cstate->current_fh;
423 return nfs_ok;
424 }
425
426 static __be32
427 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
428 struct nfsd4_putfh *putfh)
429 {
430 fh_put(&cstate->current_fh);
431 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
432 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
433 putfh->pf_fhlen);
434 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
435 }
436
437 static __be32
438 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
439 void *arg)
440 {
441 __be32 status;
442
443 fh_put(&cstate->current_fh);
444 status = exp_pseudoroot(rqstp, &cstate->current_fh);
445 return status;
446 }
447
448 static __be32
449 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
450 void *arg)
451 {
452 if (!cstate->save_fh.fh_dentry)
453 return nfserr_restorefh;
454
455 fh_dup2(&cstate->current_fh, &cstate->save_fh);
456 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
457 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
458 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
459 }
460 return nfs_ok;
461 }
462
463 static __be32
464 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
465 void *arg)
466 {
467 if (!cstate->current_fh.fh_dentry)
468 return nfserr_nofilehandle;
469
470 fh_dup2(&cstate->save_fh, &cstate->current_fh);
471 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
472 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
473 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
474 }
475 return nfs_ok;
476 }
477
478 /*
479 * misc nfsv4 ops
480 */
481 static __be32
482 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
483 struct nfsd4_access *access)
484 {
485 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
486 return nfserr_inval;
487
488 access->ac_resp_access = access->ac_req_access;
489 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
490 &access->ac_supported);
491 }
492
493 static void gen_boot_verifier(nfs4_verifier *verifier)
494 {
495 __be32 verf[2];
496
497 verf[0] = (__be32)nfssvc_boot.tv_sec;
498 verf[1] = (__be32)nfssvc_boot.tv_usec;
499 memcpy(verifier->data, verf, sizeof(verifier->data));
500 }
501
502 static __be32
503 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
504 struct nfsd4_commit *commit)
505 {
506 gen_boot_verifier(&commit->co_verf);
507 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
508 commit->co_count);
509 }
510
511 static __be32
512 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
513 struct nfsd4_create *create)
514 {
515 struct svc_fh resfh;
516 __be32 status;
517 dev_t rdev;
518
519 fh_init(&resfh, NFS4_FHSIZE);
520
521 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
522 NFSD_MAY_CREATE);
523 if (status)
524 return status;
525
526 status = check_attr_support(rqstp, cstate, create->cr_bmval,
527 nfsd_attrmask);
528 if (status)
529 return status;
530
531 switch (create->cr_type) {
532 case NF4LNK:
533 /* ugh! we have to null-terminate the linktext, or
534 * vfs_symlink() will choke. it is always safe to
535 * null-terminate by brute force, since at worst we
536 * will overwrite the first byte of the create namelen
537 * in the XDR buffer, which has already been extracted
538 * during XDR decode.
539 */
540 create->cr_linkname[create->cr_linklen] = 0;
541
542 status = nfsd_symlink(rqstp, &cstate->current_fh,
543 create->cr_name, create->cr_namelen,
544 create->cr_linkname, create->cr_linklen,
545 &resfh, &create->cr_iattr);
546 break;
547
548 case NF4BLK:
549 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
550 if (MAJOR(rdev) != create->cr_specdata1 ||
551 MINOR(rdev) != create->cr_specdata2)
552 return nfserr_inval;
553 status = nfsd_create(rqstp, &cstate->current_fh,
554 create->cr_name, create->cr_namelen,
555 &create->cr_iattr, S_IFBLK, rdev, &resfh);
556 break;
557
558 case NF4CHR:
559 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
560 if (MAJOR(rdev) != create->cr_specdata1 ||
561 MINOR(rdev) != create->cr_specdata2)
562 return nfserr_inval;
563 status = nfsd_create(rqstp, &cstate->current_fh,
564 create->cr_name, create->cr_namelen,
565 &create->cr_iattr,S_IFCHR, rdev, &resfh);
566 break;
567
568 case NF4SOCK:
569 status = nfsd_create(rqstp, &cstate->current_fh,
570 create->cr_name, create->cr_namelen,
571 &create->cr_iattr, S_IFSOCK, 0, &resfh);
572 break;
573
574 case NF4FIFO:
575 status = nfsd_create(rqstp, &cstate->current_fh,
576 create->cr_name, create->cr_namelen,
577 &create->cr_iattr, S_IFIFO, 0, &resfh);
578 break;
579
580 case NF4DIR:
581 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
582 status = nfsd_create(rqstp, &cstate->current_fh,
583 create->cr_name, create->cr_namelen,
584 &create->cr_iattr, S_IFDIR, 0, &resfh);
585 break;
586
587 default:
588 status = nfserr_badtype;
589 }
590
591 if (status)
592 goto out;
593
594 if (create->cr_acl != NULL)
595 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
596 create->cr_bmval);
597
598 fh_unlock(&cstate->current_fh);
599 set_change_info(&create->cr_cinfo, &cstate->current_fh);
600 fh_dup2(&cstate->current_fh, &resfh);
601 out:
602 fh_put(&resfh);
603 return status;
604 }
605
606 static __be32
607 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
608 struct nfsd4_getattr *getattr)
609 {
610 __be32 status;
611
612 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
613 if (status)
614 return status;
615
616 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
617 return nfserr_inval;
618
619 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
620 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
621 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
622
623 getattr->ga_fhp = &cstate->current_fh;
624 return nfs_ok;
625 }
626
627 static __be32
628 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
629 struct nfsd4_link *link)
630 {
631 __be32 status = nfserr_nofilehandle;
632
633 if (!cstate->save_fh.fh_dentry)
634 return status;
635 status = nfsd_link(rqstp, &cstate->current_fh,
636 link->li_name, link->li_namelen, &cstate->save_fh);
637 if (!status)
638 set_change_info(&link->li_cinfo, &cstate->current_fh);
639 return status;
640 }
641
642 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
643 {
644 struct svc_fh tmp_fh;
645 __be32 ret;
646
647 fh_init(&tmp_fh, NFS4_FHSIZE);
648 ret = exp_pseudoroot(rqstp, &tmp_fh);
649 if (ret)
650 return ret;
651 if (tmp_fh.fh_dentry == fh->fh_dentry) {
652 fh_put(&tmp_fh);
653 return nfserr_noent;
654 }
655 fh_put(&tmp_fh);
656 return nfsd_lookup(rqstp, fh, "..", 2, fh);
657 }
658
659 static __be32
660 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
661 void *arg)
662 {
663 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
664 }
665
666 static __be32
667 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
668 struct nfsd4_lookup *lookup)
669 {
670 return nfsd_lookup(rqstp, &cstate->current_fh,
671 lookup->lo_name, lookup->lo_len,
672 &cstate->current_fh);
673 }
674
675 static __be32
676 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
677 struct nfsd4_read *read)
678 {
679 __be32 status;
680
681 /* no need to check permission - this will be done in nfsd_read() */
682
683 read->rd_filp = NULL;
684 if (read->rd_offset >= OFFSET_MAX)
685 return nfserr_inval;
686
687 nfs4_lock_state();
688 /* check stateid */
689 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
690 RD_STATE, &read->rd_filp))) {
691 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
692 goto out;
693 }
694 if (read->rd_filp)
695 get_file(read->rd_filp);
696 status = nfs_ok;
697 out:
698 nfs4_unlock_state();
699 read->rd_rqstp = rqstp;
700 read->rd_fhp = &cstate->current_fh;
701 return status;
702 }
703
704 static __be32
705 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
706 struct nfsd4_readdir *readdir)
707 {
708 u64 cookie = readdir->rd_cookie;
709 static const nfs4_verifier zeroverf;
710
711 /* no need to check permission - this will be done in nfsd_readdir() */
712
713 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
714 return nfserr_inval;
715
716 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
717 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
718 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
719
720 if ((cookie == 1) || (cookie == 2) ||
721 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
722 return nfserr_bad_cookie;
723
724 readdir->rd_rqstp = rqstp;
725 readdir->rd_fhp = &cstate->current_fh;
726 return nfs_ok;
727 }
728
729 static __be32
730 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
731 struct nfsd4_readlink *readlink)
732 {
733 readlink->rl_rqstp = rqstp;
734 readlink->rl_fhp = &cstate->current_fh;
735 return nfs_ok;
736 }
737
738 static __be32
739 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
740 struct nfsd4_remove *remove)
741 {
742 __be32 status;
743
744 if (locks_in_grace())
745 return nfserr_grace;
746 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
747 remove->rm_name, remove->rm_namelen);
748 if (!status) {
749 fh_unlock(&cstate->current_fh);
750 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
751 }
752 return status;
753 }
754
755 static __be32
756 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
757 struct nfsd4_rename *rename)
758 {
759 __be32 status = nfserr_nofilehandle;
760
761 if (!cstate->save_fh.fh_dentry)
762 return status;
763 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
764 & NFSEXP_NOSUBTREECHECK))
765 return nfserr_grace;
766 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
767 rename->rn_snamelen, &cstate->current_fh,
768 rename->rn_tname, rename->rn_tnamelen);
769
770 /* the underlying filesystem returns different error's than required
771 * by NFSv4. both save_fh and current_fh have been verified.. */
772 if (status == nfserr_isdir)
773 status = nfserr_exist;
774 else if ((status == nfserr_notdir) &&
775 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
776 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
777 status = nfserr_exist;
778
779 if (!status) {
780 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
781 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
782 }
783 return status;
784 }
785
786 static __be32
787 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
788 struct nfsd4_secinfo *secinfo)
789 {
790 struct svc_fh resfh;
791 struct svc_export *exp;
792 struct dentry *dentry;
793 __be32 err;
794
795 fh_init(&resfh, NFS4_FHSIZE);
796 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
797 if (err)
798 return err;
799 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
800 secinfo->si_name, secinfo->si_namelen,
801 &exp, &dentry);
802 if (err)
803 return err;
804 if (dentry->d_inode == NULL) {
805 exp_put(exp);
806 err = nfserr_noent;
807 } else
808 secinfo->si_exp = exp;
809 dput(dentry);
810 if (cstate->minorversion)
811 /* See rfc 5661 section 2.6.3.1.1.8 */
812 fh_put(&cstate->current_fh);
813 return err;
814 }
815
816 static __be32
817 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
818 struct nfsd4_secinfo_no_name *sin)
819 {
820 __be32 err;
821
822 switch (sin->sin_style) {
823 case NFS4_SECINFO_STYLE4_CURRENT_FH:
824 break;
825 case NFS4_SECINFO_STYLE4_PARENT:
826 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
827 if (err)
828 return err;
829 break;
830 default:
831 return nfserr_inval;
832 }
833 exp_get(cstate->current_fh.fh_export);
834 sin->sin_exp = cstate->current_fh.fh_export;
835 fh_put(&cstate->current_fh);
836 return nfs_ok;
837 }
838
839 static __be32
840 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
841 struct nfsd4_setattr *setattr)
842 {
843 __be32 status = nfs_ok;
844 int err;
845
846 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
847 nfs4_lock_state();
848 status = nfs4_preprocess_stateid_op(cstate,
849 &setattr->sa_stateid, WR_STATE, NULL);
850 nfs4_unlock_state();
851 if (status) {
852 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
853 return status;
854 }
855 }
856 err = fh_want_write(&cstate->current_fh);
857 if (err)
858 return nfserrno(err);
859 status = nfs_ok;
860
861 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
862 nfsd_attrmask);
863 if (status)
864 goto out;
865
866 if (setattr->sa_acl != NULL)
867 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
868 setattr->sa_acl);
869 if (status)
870 goto out;
871 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
872 0, (time_t)0);
873 out:
874 fh_drop_write(&cstate->current_fh);
875 return status;
876 }
877
878 static __be32
879 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
880 struct nfsd4_write *write)
881 {
882 stateid_t *stateid = &write->wr_stateid;
883 struct file *filp = NULL;
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 (filp)
895 get_file(filp);
896 nfs4_unlock_state();
897
898 if (status) {
899 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
900 return status;
901 }
902
903 cnt = write->wr_buflen;
904 write->wr_how_written = write->wr_stable_how;
905 gen_boot_verifier(&write->wr_verifier);
906
907 status = nfsd_write(rqstp, &cstate->current_fh, filp,
908 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
909 &cnt, &write->wr_how_written);
910 if (filp)
911 fput(filp);
912
913 write->wr_bytes_written = cnt;
914
915 return status;
916 }
917
918 /* This routine never returns NFS_OK! If there are no other errors, it
919 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
920 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
921 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
922 */
923 static __be32
924 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
925 struct nfsd4_verify *verify)
926 {
927 __be32 *buf, *p;
928 int count;
929 __be32 status;
930
931 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
932 if (status)
933 return status;
934
935 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
936 if (status)
937 return status;
938
939 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
940 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
941 return nfserr_inval;
942 if (verify->ve_attrlen & 3)
943 return nfserr_inval;
944
945 /* count in words:
946 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
947 */
948 count = 4 + (verify->ve_attrlen >> 2);
949 buf = kmalloc(count << 2, GFP_KERNEL);
950 if (!buf)
951 return nfserr_jukebox;
952
953 status = nfsd4_encode_fattr(&cstate->current_fh,
954 cstate->current_fh.fh_export,
955 cstate->current_fh.fh_dentry, buf,
956 &count, verify->ve_bmval,
957 rqstp, 0);
958
959 /* this means that nfsd4_encode_fattr() ran out of space */
960 if (status == nfserr_resource && count == 0)
961 status = nfserr_not_same;
962 if (status)
963 goto out_kfree;
964
965 /* skip bitmap */
966 p = buf + 1 + ntohl(buf[0]);
967 status = nfserr_not_same;
968 if (ntohl(*p++) != verify->ve_attrlen)
969 goto out_kfree;
970 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
971 status = nfserr_same;
972
973 out_kfree:
974 kfree(buf);
975 return status;
976 }
977
978 static __be32
979 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
980 struct nfsd4_verify *verify)
981 {
982 __be32 status;
983
984 status = _nfsd4_verify(rqstp, cstate, verify);
985 return status == nfserr_not_same ? nfs_ok : status;
986 }
987
988 static __be32
989 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
990 struct nfsd4_verify *verify)
991 {
992 __be32 status;
993
994 status = _nfsd4_verify(rqstp, cstate, verify);
995 return status == nfserr_same ? nfs_ok : status;
996 }
997
998 /*
999 * NULL call.
1000 */
1001 static __be32
1002 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1003 {
1004 return nfs_ok;
1005 }
1006
1007 static inline void nfsd4_increment_op_stats(u32 opnum)
1008 {
1009 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1010 nfsdstats.nfs4_opcount[opnum]++;
1011 }
1012
1013 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1014 void *);
1015 typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
1016 typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1017 typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
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 * These are ops which clear current state id.
1045 */
1046 OP_CLEAR_STATEID = 1 << 7,
1047 };
1048
1049 struct nfsd4_operation {
1050 nfsd4op_func op_func;
1051 u32 op_flags;
1052 char *op_name;
1053 /* Try to get response size before operation */
1054 nfsd4op_rsize op_rsize_bop;
1055 stateid_setter op_get_currentstateid;
1056 stateid_getter op_set_currentstateid;
1057 };
1058
1059 static struct nfsd4_operation nfsd4_ops[];
1060
1061 #ifdef NFSD_DEBUG
1062 static const char *nfsd4_op_name(unsigned opnum);
1063 #endif
1064
1065 /*
1066 * Enforce NFSv4.1 COMPOUND ordering rules:
1067 *
1068 * Also note, enforced elsewhere:
1069 * - SEQUENCE other than as first op results in
1070 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1071 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1072 * (Enforced in nfsd4_bind_conn_to_session().)
1073 * - DESTROY_SESSION must be the final operation in a compound, if
1074 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1075 * (Enforced in nfsd4_destroy_session().)
1076 */
1077 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
1078 {
1079 struct nfsd4_op *op = &args->ops[0];
1080
1081 /* These ordering requirements don't apply to NFSv4.0: */
1082 if (args->minorversion == 0)
1083 return nfs_ok;
1084 /* This is weird, but OK, not our problem: */
1085 if (args->opcnt == 0)
1086 return nfs_ok;
1087 if (op->status == nfserr_op_illegal)
1088 return nfs_ok;
1089 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1090 return nfserr_op_not_in_session;
1091 if (op->opnum == OP_SEQUENCE)
1092 return nfs_ok;
1093 if (args->opcnt != 1)
1094 return nfserr_not_only_op;
1095 return nfs_ok;
1096 }
1097
1098 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1099 {
1100 return &nfsd4_ops[op->opnum];
1101 }
1102
1103 bool nfsd4_cache_this_op(struct nfsd4_op *op)
1104 {
1105 return OPDESC(op)->op_flags & OP_CACHEME;
1106 }
1107
1108 static bool need_wrongsec_check(struct svc_rqst *rqstp)
1109 {
1110 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1111 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1112 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1113 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1114 struct nfsd4_operation *thisd;
1115 struct nfsd4_operation *nextd;
1116
1117 thisd = OPDESC(this);
1118 /*
1119 * Most ops check wronsec on our own; only the putfh-like ops
1120 * have special rules.
1121 */
1122 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1123 return false;
1124 /*
1125 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1126 * put-filehandle operation if we're not going to use the
1127 * result:
1128 */
1129 if (argp->opcnt == resp->opcnt)
1130 return false;
1131
1132 nextd = OPDESC(next);
1133 /*
1134 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1135 * errors themselves as necessary; others should check for them
1136 * now:
1137 */
1138 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1139 }
1140
1141 /*
1142 * COMPOUND call.
1143 */
1144 static __be32
1145 nfsd4_proc_compound(struct svc_rqst *rqstp,
1146 struct nfsd4_compoundargs *args,
1147 struct nfsd4_compoundres *resp)
1148 {
1149 struct nfsd4_op *op;
1150 struct nfsd4_operation *opdesc;
1151 struct nfsd4_compound_state *cstate = &resp->cstate;
1152 int slack_bytes;
1153 u32 plen = 0;
1154 __be32 status;
1155
1156 resp->xbuf = &rqstp->rq_res;
1157 resp->p = rqstp->rq_res.head[0].iov_base +
1158 rqstp->rq_res.head[0].iov_len;
1159 resp->tagp = resp->p;
1160 /* reserve space for: taglen, tag, and opcnt */
1161 resp->p += 2 + XDR_QUADLEN(args->taglen);
1162 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1163 resp->taglen = args->taglen;
1164 resp->tag = args->tag;
1165 resp->opcnt = 0;
1166 resp->rqstp = rqstp;
1167 resp->cstate.minorversion = args->minorversion;
1168 resp->cstate.replay_owner = NULL;
1169 resp->cstate.session = NULL;
1170 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1171 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
1172 /*
1173 * Don't use the deferral mechanism for NFSv4; compounds make it
1174 * too hard to avoid non-idempotency problems.
1175 */
1176 rqstp->rq_usedeferral = 0;
1177
1178 /*
1179 * According to RFC3010, this takes precedence over all other errors.
1180 */
1181 status = nfserr_minor_vers_mismatch;
1182 if (args->minorversion > nfsd_supported_minorversion)
1183 goto out;
1184
1185 status = nfs41_check_op_ordering(args);
1186 if (status) {
1187 op = &args->ops[0];
1188 op->status = status;
1189 goto encode_op;
1190 }
1191
1192 while (!status && resp->opcnt < args->opcnt) {
1193 op = &args->ops[resp->opcnt++];
1194
1195 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1196 resp->opcnt, args->opcnt, op->opnum,
1197 nfsd4_op_name(op->opnum));
1198 /*
1199 * The XDR decode routines may have pre-set op->status;
1200 * for example, if there is a miscellaneous XDR error
1201 * it will be set to nfserr_bad_xdr.
1202 */
1203 if (op->status)
1204 goto encode_op;
1205
1206 /* We must be able to encode a successful response to
1207 * this operation, with enough room left over to encode a
1208 * failed response to the next operation. If we don't
1209 * have enough room, fail with ERR_RESOURCE.
1210 */
1211 slack_bytes = (char *)resp->end - (char *)resp->p;
1212 if (slack_bytes < COMPOUND_SLACK_SPACE
1213 + COMPOUND_ERR_SLACK_SPACE) {
1214 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
1215 op->status = nfserr_resource;
1216 goto encode_op;
1217 }
1218
1219 opdesc = OPDESC(op);
1220
1221 if (!cstate->current_fh.fh_dentry) {
1222 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1223 op->status = nfserr_nofilehandle;
1224 goto encode_op;
1225 }
1226 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1227 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1228 op->status = nfserr_moved;
1229 goto encode_op;
1230 }
1231
1232 /* If op is non-idempotent */
1233 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1234 plen = opdesc->op_rsize_bop(rqstp, op);
1235 op->status = nfsd4_check_resp_size(resp, plen);
1236 }
1237
1238 if (op->status)
1239 goto encode_op;
1240
1241 if (opdesc->op_func) {
1242 if (opdesc->op_get_currentstateid)
1243 opdesc->op_get_currentstateid(cstate, &op->u);
1244 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1245 } else
1246 BUG_ON(op->status == nfs_ok);
1247
1248 if (!op->status) {
1249 if (opdesc->op_set_currentstateid)
1250 opdesc->op_set_currentstateid(cstate, &op->u);
1251
1252 if (opdesc->op_flags & OP_CLEAR_STATEID)
1253 clear_current_stateid(cstate);
1254
1255 if (need_wrongsec_check(rqstp))
1256 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1257 }
1258
1259 encode_op:
1260 /* Only from SEQUENCE */
1261 if (resp->cstate.status == nfserr_replay_cache) {
1262 dprintk("%s NFS4.1 replay from cache\n", __func__);
1263 status = op->status;
1264 goto out;
1265 }
1266 if (op->status == nfserr_replay_me) {
1267 op->replay = &cstate->replay_owner->so_replay;
1268 nfsd4_encode_replay(resp, op);
1269 status = op->status = op->replay->rp_status;
1270 } else {
1271 nfsd4_encode_operation(resp, op);
1272 status = op->status;
1273 }
1274
1275 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1276 args->ops, args->opcnt, resp->opcnt, op->opnum,
1277 be32_to_cpu(status));
1278
1279 if (cstate->replay_owner) {
1280 nfs4_unlock_state();
1281 cstate->replay_owner = NULL;
1282 }
1283 /* XXX Ugh, we need to get rid of this kind of special case: */
1284 if (op->opnum == OP_READ && op->u.read.rd_filp)
1285 fput(op->u.read.rd_filp);
1286
1287 nfsd4_increment_op_stats(op->opnum);
1288 }
1289
1290 resp->cstate.status = status;
1291 fh_put(&resp->cstate.current_fh);
1292 fh_put(&resp->cstate.save_fh);
1293 BUG_ON(resp->cstate.replay_owner);
1294 out:
1295 /* Reset deferral mechanism for RPC deferrals */
1296 rqstp->rq_usedeferral = 1;
1297 dprintk("nfsv4 compound returned %d\n", ntohl(status));
1298 return status;
1299 }
1300
1301 #define op_encode_hdr_size (2)
1302 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1303 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1304 #define op_encode_change_info_maxsz (5)
1305 #define nfs4_fattr_bitmap_maxsz (4)
1306
1307 #define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1308 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1309
1310 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1311
1312 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1313 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1314 op_encode_ace_maxsz)
1315
1316 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1317
1318 static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1319 {
1320 return (op_encode_hdr_size) * sizeof(__be32);
1321 }
1322
1323 static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1324 {
1325 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1326 }
1327
1328 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1329 {
1330 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1331 }
1332
1333 static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1334 {
1335 return (op_encode_hdr_size + op_encode_change_info_maxsz
1336 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1337 }
1338
1339 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1340 {
1341 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1342 * sizeof(__be32);
1343 }
1344
1345 static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1346 {
1347 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1348 * sizeof(__be32);
1349 }
1350
1351 static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1352 {
1353 return (op_encode_hdr_size + op_encode_stateid_maxsz
1354 + op_encode_change_info_maxsz + 1
1355 + nfs4_fattr_bitmap_maxsz
1356 + op_encode_delegation_maxsz) * sizeof(__be32);
1357 }
1358
1359 static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1360 {
1361 u32 maxcount = 0, rlen = 0;
1362
1363 maxcount = svc_max_payload(rqstp);
1364 rlen = op->u.read.rd_length;
1365
1366 if (rlen > maxcount)
1367 rlen = maxcount;
1368
1369 return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
1370 }
1371
1372 static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1373 {
1374 u32 rlen = op->u.readdir.rd_maxcount;
1375
1376 if (rlen > PAGE_SIZE)
1377 rlen = PAGE_SIZE;
1378
1379 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1380 * sizeof(__be32) + rlen;
1381 }
1382
1383 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1384 {
1385 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1386 * sizeof(__be32);
1387 }
1388
1389 static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1390 {
1391 return (op_encode_hdr_size + op_encode_change_info_maxsz
1392 + op_encode_change_info_maxsz) * sizeof(__be32);
1393 }
1394
1395 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1396 {
1397 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1398 }
1399
1400 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1401 {
1402 return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32);
1403 }
1404
1405 static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1406 {
1407 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1408 }
1409
1410 static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1411 {
1412 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1413 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1414 2 + /*eir_server_owner.so_minor_id */\
1415 /* eir_server_owner.so_major_id<> */\
1416 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1417 /* eir_server_scope<> */\
1418 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1419 1 + /* eir_server_impl_id array length */\
1420 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1421 }
1422
1423 static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1424 {
1425 return (op_encode_hdr_size + \
1426 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1427 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1428 }
1429
1430 static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1431 {
1432 return (op_encode_hdr_size + \
1433 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1434 2 + /* csr_sequence, csr_flags */\
1435 op_encode_channel_attrs_maxsz + \
1436 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1437 }
1438
1439 static struct nfsd4_operation nfsd4_ops[] = {
1440 [OP_ACCESS] = {
1441 .op_func = (nfsd4op_func)nfsd4_access,
1442 .op_name = "OP_ACCESS",
1443 },
1444 [OP_CLOSE] = {
1445 .op_func = (nfsd4op_func)nfsd4_close,
1446 .op_flags = OP_MODIFIES_SOMETHING,
1447 .op_name = "OP_CLOSE",
1448 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1449 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1450 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
1451 },
1452 [OP_COMMIT] = {
1453 .op_func = (nfsd4op_func)nfsd4_commit,
1454 .op_flags = OP_MODIFIES_SOMETHING,
1455 .op_name = "OP_COMMIT",
1456 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
1457 },
1458 [OP_CREATE] = {
1459 .op_func = (nfsd4op_func)nfsd4_create,
1460 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
1461 .op_name = "OP_CREATE",
1462 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
1463 },
1464 [OP_DELEGRETURN] = {
1465 .op_func = (nfsd4op_func)nfsd4_delegreturn,
1466 .op_flags = OP_MODIFIES_SOMETHING,
1467 .op_name = "OP_DELEGRETURN",
1468 .op_rsize_bop = nfsd4_only_status_rsize,
1469 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
1470 },
1471 [OP_GETATTR] = {
1472 .op_func = (nfsd4op_func)nfsd4_getattr,
1473 .op_flags = ALLOWED_ON_ABSENT_FS,
1474 .op_name = "OP_GETATTR",
1475 },
1476 [OP_GETFH] = {
1477 .op_func = (nfsd4op_func)nfsd4_getfh,
1478 .op_name = "OP_GETFH",
1479 },
1480 [OP_LINK] = {
1481 .op_func = (nfsd4op_func)nfsd4_link,
1482 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1483 | OP_CACHEME,
1484 .op_name = "OP_LINK",
1485 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
1486 },
1487 [OP_LOCK] = {
1488 .op_func = (nfsd4op_func)nfsd4_lock,
1489 .op_flags = OP_MODIFIES_SOMETHING,
1490 .op_name = "OP_LOCK",
1491 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
1492 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
1493 },
1494 [OP_LOCKT] = {
1495 .op_func = (nfsd4op_func)nfsd4_lockt,
1496 .op_name = "OP_LOCKT",
1497 },
1498 [OP_LOCKU] = {
1499 .op_func = (nfsd4op_func)nfsd4_locku,
1500 .op_flags = OP_MODIFIES_SOMETHING,
1501 .op_name = "OP_LOCKU",
1502 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1503 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
1504 },
1505 [OP_LOOKUP] = {
1506 .op_func = (nfsd4op_func)nfsd4_lookup,
1507 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
1508 .op_name = "OP_LOOKUP",
1509 },
1510 [OP_LOOKUPP] = {
1511 .op_func = (nfsd4op_func)nfsd4_lookupp,
1512 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
1513 .op_name = "OP_LOOKUPP",
1514 },
1515 [OP_NVERIFY] = {
1516 .op_func = (nfsd4op_func)nfsd4_nverify,
1517 .op_name = "OP_NVERIFY",
1518 },
1519 [OP_OPEN] = {
1520 .op_func = (nfsd4op_func)nfsd4_open,
1521 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1522 .op_name = "OP_OPEN",
1523 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
1524 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
1525 },
1526 [OP_OPEN_CONFIRM] = {
1527 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1528 .op_flags = OP_MODIFIES_SOMETHING,
1529 .op_name = "OP_OPEN_CONFIRM",
1530 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1531 },
1532 [OP_OPEN_DOWNGRADE] = {
1533 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1534 .op_flags = OP_MODIFIES_SOMETHING,
1535 .op_name = "OP_OPEN_DOWNGRADE",
1536 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1537 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
1538 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
1539 },
1540 [OP_PUTFH] = {
1541 .op_func = (nfsd4op_func)nfsd4_putfh,
1542 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1543 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1544 | OP_CLEAR_STATEID,
1545 .op_name = "OP_PUTFH",
1546 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1547 },
1548 [OP_PUTPUBFH] = {
1549 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1550 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1551 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1552 | OP_CLEAR_STATEID,
1553 .op_name = "OP_PUTPUBFH",
1554 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1555 },
1556 [OP_PUTROOTFH] = {
1557 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1558 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1559 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1560 | OP_CLEAR_STATEID,
1561 .op_name = "OP_PUTROOTFH",
1562 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1563 },
1564 [OP_READ] = {
1565 .op_func = (nfsd4op_func)nfsd4_read,
1566 .op_flags = OP_MODIFIES_SOMETHING,
1567 .op_name = "OP_READ",
1568 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
1569 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
1570 },
1571 [OP_READDIR] = {
1572 .op_func = (nfsd4op_func)nfsd4_readdir,
1573 .op_flags = OP_MODIFIES_SOMETHING,
1574 .op_name = "OP_READDIR",
1575 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
1576 },
1577 [OP_READLINK] = {
1578 .op_func = (nfsd4op_func)nfsd4_readlink,
1579 .op_name = "OP_READLINK",
1580 },
1581 [OP_REMOVE] = {
1582 .op_func = (nfsd4op_func)nfsd4_remove,
1583 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1584 .op_name = "OP_REMOVE",
1585 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
1586 },
1587 [OP_RENAME] = {
1588 .op_func = (nfsd4op_func)nfsd4_rename,
1589 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1590 .op_name = "OP_RENAME",
1591 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
1592 },
1593 [OP_RENEW] = {
1594 .op_func = (nfsd4op_func)nfsd4_renew,
1595 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1596 | OP_MODIFIES_SOMETHING,
1597 .op_name = "OP_RENEW",
1598 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1599
1600 },
1601 [OP_RESTOREFH] = {
1602 .op_func = (nfsd4op_func)nfsd4_restorefh,
1603 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1604 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1605 .op_name = "OP_RESTOREFH",
1606 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1607 },
1608 [OP_SAVEFH] = {
1609 .op_func = (nfsd4op_func)nfsd4_savefh,
1610 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1611 .op_name = "OP_SAVEFH",
1612 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1613 },
1614 [OP_SECINFO] = {
1615 .op_func = (nfsd4op_func)nfsd4_secinfo,
1616 .op_flags = OP_HANDLES_WRONGSEC,
1617 .op_name = "OP_SECINFO",
1618 },
1619 [OP_SETATTR] = {
1620 .op_func = (nfsd4op_func)nfsd4_setattr,
1621 .op_name = "OP_SETATTR",
1622 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1623 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
1624 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
1625 },
1626 [OP_SETCLIENTID] = {
1627 .op_func = (nfsd4op_func)nfsd4_setclientid,
1628 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1629 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1630 .op_name = "OP_SETCLIENTID",
1631 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
1632 },
1633 [OP_SETCLIENTID_CONFIRM] = {
1634 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1635 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1636 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1637 .op_name = "OP_SETCLIENTID_CONFIRM",
1638 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1639 },
1640 [OP_VERIFY] = {
1641 .op_func = (nfsd4op_func)nfsd4_verify,
1642 .op_name = "OP_VERIFY",
1643 },
1644 [OP_WRITE] = {
1645 .op_func = (nfsd4op_func)nfsd4_write,
1646 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1647 .op_name = "OP_WRITE",
1648 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1649 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
1650 },
1651 [OP_RELEASE_LOCKOWNER] = {
1652 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1653 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1654 | OP_MODIFIES_SOMETHING,
1655 .op_name = "OP_RELEASE_LOCKOWNER",
1656 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1657 },
1658
1659 /* NFSv4.1 operations */
1660 [OP_EXCHANGE_ID] = {
1661 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1662 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1663 | OP_MODIFIES_SOMETHING,
1664 .op_name = "OP_EXCHANGE_ID",
1665 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
1666 },
1667 [OP_BIND_CONN_TO_SESSION] = {
1668 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1669 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1670 | OP_MODIFIES_SOMETHING,
1671 .op_name = "OP_BIND_CONN_TO_SESSION",
1672 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
1673 },
1674 [OP_CREATE_SESSION] = {
1675 .op_func = (nfsd4op_func)nfsd4_create_session,
1676 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1677 | OP_MODIFIES_SOMETHING,
1678 .op_name = "OP_CREATE_SESSION",
1679 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
1680 },
1681 [OP_DESTROY_SESSION] = {
1682 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1683 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1684 | OP_MODIFIES_SOMETHING,
1685 .op_name = "OP_DESTROY_SESSION",
1686 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1687 },
1688 [OP_SEQUENCE] = {
1689 .op_func = (nfsd4op_func)nfsd4_sequence,
1690 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1691 .op_name = "OP_SEQUENCE",
1692 },
1693 [OP_DESTROY_CLIENTID] = {
1694 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
1695 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1696 | OP_MODIFIES_SOMETHING,
1697 .op_name = "OP_DESTROY_CLIENTID",
1698 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1699 },
1700 [OP_RECLAIM_COMPLETE] = {
1701 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1702 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1703 .op_name = "OP_RECLAIM_COMPLETE",
1704 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1705 },
1706 [OP_SECINFO_NO_NAME] = {
1707 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
1708 .op_flags = OP_HANDLES_WRONGSEC,
1709 .op_name = "OP_SECINFO_NO_NAME",
1710 },
1711 [OP_TEST_STATEID] = {
1712 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1713 .op_flags = ALLOWED_WITHOUT_FH,
1714 .op_name = "OP_TEST_STATEID",
1715 },
1716 [OP_FREE_STATEID] = {
1717 .op_func = (nfsd4op_func)nfsd4_free_stateid,
1718 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1719 .op_name = "OP_FREE_STATEID",
1720 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1721 },
1722 };
1723
1724 #ifdef NFSD_DEBUG
1725 static const char *nfsd4_op_name(unsigned opnum)
1726 {
1727 if (opnum < ARRAY_SIZE(nfsd4_ops))
1728 return nfsd4_ops[opnum].op_name;
1729 return "unknown_operation";
1730 }
1731 #endif
1732
1733 #define nfsd4_voidres nfsd4_voidargs
1734 struct nfsd4_voidargs { int dummy; };
1735
1736 static struct svc_procedure nfsd_procedures4[2] = {
1737 [NFSPROC4_NULL] = {
1738 .pc_func = (svc_procfunc) nfsd4_proc_null,
1739 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1740 .pc_argsize = sizeof(struct nfsd4_voidargs),
1741 .pc_ressize = sizeof(struct nfsd4_voidres),
1742 .pc_cachetype = RC_NOCACHE,
1743 .pc_xdrressize = 1,
1744 },
1745 [NFSPROC4_COMPOUND] = {
1746 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1747 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1748 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1749 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1750 .pc_ressize = sizeof(struct nfsd4_compoundres),
1751 .pc_release = nfsd4_release_compoundargs,
1752 .pc_cachetype = RC_NOCACHE,
1753 .pc_xdrressize = NFSD_BUFSIZE/4,
1754 },
1755 };
1756
1757 struct svc_version nfsd_version4 = {
1758 .vs_vers = 4,
1759 .vs_nproc = 2,
1760 .vs_proc = nfsd_procedures4,
1761 .vs_dispatch = nfsd_dispatch,
1762 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1763 };
1764
1765 /*
1766 * Local variables:
1767 * c-basic-offset: 8
1768 * End:
1769 */
Linux with added FPC-III support