2 * Server-side procedures for NFSv4.
4 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
35 #include <linux/file.h>
36 #include <linux/falloc.h>
37 #include <linux/slab.h>
43 #include "current_stateid.h"
47 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
48 #include <linux/security.h>
51 nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
53 struct inode *inode = resfh->fh_dentry->d_inode;
56 mutex_lock(&inode->i_mutex);
57 status = security_inode_setsecctx(resfh->fh_dentry,
58 label->data, label->len);
59 mutex_unlock(&inode->i_mutex);
63 * XXX: We should really fail the whole open, but we may
64 * already have created a new file, so it may be too
65 * late. For now this seems the least of evils:
67 bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
73 nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
77 #define NFSDDBG_FACILITY NFSDDBG_PROC
79 static u32 nfsd_attrmask[] = {
80 NFSD_WRITEABLE_ATTRS_WORD0,
81 NFSD_WRITEABLE_ATTRS_WORD1,
82 NFSD_WRITEABLE_ATTRS_WORD2
85 static u32 nfsd41_ex_attrmask[] = {
86 NFSD_SUPPATTR_EXCLCREAT_WORD0,
87 NFSD_SUPPATTR_EXCLCREAT_WORD1,
88 NFSD_SUPPATTR_EXCLCREAT_WORD2
92 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
93 u32 *bmval, u32 *writable)
95 struct dentry *dentry = cstate->current_fh.fh_dentry;
98 * Check about attributes are supported by the NFSv4 server or not.
99 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
101 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
102 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
103 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
104 return nfserr_attrnotsupp;
107 * Check FATTR4_WORD0_ACL can be supported
108 * in current environment or not.
110 if (bmval[0] & FATTR4_WORD0_ACL) {
111 if (!IS_POSIXACL(dentry->d_inode))
112 return nfserr_attrnotsupp;
116 * According to spec, read-only attributes return ERR_INVAL.
119 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
120 (bmval[2] & ~writable[2]))
128 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
129 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
131 __be32 status = nfs_ok;
133 if (open->op_create == NFS4_OPEN_CREATE) {
134 if (open->op_createmode == NFS4_CREATE_UNCHECKED
135 || open->op_createmode == NFS4_CREATE_GUARDED)
136 status = check_attr_support(rqstp, cstate,
137 open->op_bmval, nfsd_attrmask);
138 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
139 status = check_attr_support(rqstp, cstate,
140 open->op_bmval, nfsd41_ex_attrmask);
147 is_create_with_attrs(struct nfsd4_open *open)
149 return open->op_create == NFS4_OPEN_CREATE
150 && (open->op_createmode == NFS4_CREATE_UNCHECKED
151 || open->op_createmode == NFS4_CREATE_GUARDED
152 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
156 * if error occurs when setting the acl, just clear the acl bit
157 * in the returned attr bitmap.
160 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
161 struct nfs4_acl *acl, u32 *bmval)
165 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
168 * We should probably fail the whole open at this point,
169 * but we've already created the file, so it's too late;
170 * So this seems the least of evils:
172 bmval[0] &= ~FATTR4_WORD0_ACL;
176 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
179 dget(src->fh_dentry);
181 exp_get(src->fh_export);
186 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
190 if (open->op_truncate &&
191 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
194 accmode |= NFSD_MAY_READ_IF_EXEC;
196 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
197 accmode |= NFSD_MAY_READ;
198 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
199 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
200 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
201 accmode |= NFSD_MAY_WRITE;
203 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
208 static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
210 umode_t mode = fh->fh_dentry->d_inode->i_mode;
217 * Using err_symlink as our catch-all case may look odd; but
218 * there's no other obvious error for this case in 4.0, and we
219 * happen to know that it will cause the linux v4 client to do
220 * the right thing on attempts to open something other than a
223 return nfserr_symlink;
226 static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh)
228 if (nfsd4_has_session(cstate))
230 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
235 do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh)
237 struct svc_fh *current_fh = &cstate->current_fh;
241 *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
243 return nfserr_jukebox;
244 fh_init(*resfh, NFS4_FHSIZE);
245 open->op_truncate = 0;
247 if (open->op_create) {
248 /* FIXME: check session persistence and pnfs flags.
249 * The nfsv4.1 spec requires the following semantics:
251 * Persistent | pNFS | Server REQUIRED | Client Allowed
252 * Reply Cache | server | |
253 * -------------+--------+-----------------+--------------------
254 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
256 * | | and EXCLUSIVE4 | or EXCLUSIVE4
258 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
259 * yes | no | GUARDED4 | GUARDED4
260 * yes | yes | GUARDED4 | GUARDED4
264 * Note: create modes (UNCHECKED,GUARDED...) are the same
265 * in NFSv4 as in v3 except EXCLUSIVE4_1.
267 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
268 open->op_fname.len, &open->op_iattr,
269 *resfh, open->op_createmode,
270 (u32 *)open->op_verf.data,
271 &open->op_truncate, &open->op_created);
273 if (!status && open->op_label.len)
274 nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval);
277 * Following rfc 3530 14.2.16, use the returned bitmask
278 * to indicate which attributes we used to store the
281 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
282 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
283 FATTR4_WORD1_TIME_MODIFY);
286 * Note this may exit with the parent still locked.
287 * We will hold the lock until nfsd4_open's final
288 * lookup, to prevent renames or unlinks until we've had
289 * a chance to an acquire a delegation if appropriate.
291 status = nfsd_lookup(rqstp, current_fh,
292 open->op_fname.data, open->op_fname.len, *resfh);
295 status = nfsd_check_obj_isreg(*resfh);
299 if (is_create_with_attrs(open) && open->op_acl != NULL)
300 do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);
302 nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
303 accmode = NFSD_MAY_NOP;
304 if (open->op_created ||
305 open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
306 accmode |= NFSD_MAY_OWNER_OVERRIDE;
307 status = do_open_permission(rqstp, *resfh, open, accmode);
308 set_change_info(&open->op_cinfo, current_fh);
314 do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
316 struct svc_fh *current_fh = &cstate->current_fh;
320 /* We don't know the target directory, and therefore can not
321 * set the change info
324 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
326 nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);
328 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
329 (open->op_iattr.ia_size == 0);
331 * In the delegation case, the client is telling us about an
332 * open that it *already* performed locally, some time ago. We
333 * should let it succeed now if possible.
335 * In the case of a CLAIM_FH open, on the other hand, the client
336 * may be counting on us to enforce permissions (the Linux 4.1
337 * client uses this for normal opens, for example).
339 if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
340 accmode = NFSD_MAY_OWNER_OVERRIDE;
342 status = do_open_permission(rqstp, current_fh, open, accmode);
348 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
350 struct nfsd4_sessionid *sid =
351 (struct nfsd4_sessionid *)session->se_sessionid.data;
353 clid->cl_boot = sid->clientid.cl_boot;
354 clid->cl_id = sid->clientid.cl_id;
358 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
359 struct nfsd4_open *open)
362 struct svc_fh *resfh = NULL;
363 struct nfsd4_compoundres *resp;
364 struct net *net = SVC_NET(rqstp);
365 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
367 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
368 (int)open->op_fname.len, open->op_fname.data,
371 /* This check required by spec. */
372 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
375 open->op_created = 0;
378 * Before RECLAIM_COMPLETE done, server should deny new lock
380 if (nfsd4_has_session(cstate) &&
381 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
382 &cstate->session->se_client->cl_flags) &&
383 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
386 if (nfsd4_has_session(cstate))
387 copy_clientid(&open->op_clientid, cstate->session);
389 /* check seqid for replay. set nfs4_owner */
390 resp = rqstp->rq_resp;
391 status = nfsd4_process_open1(&resp->cstate, open, nn);
392 if (status == nfserr_replay_me) {
393 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
394 fh_put(&cstate->current_fh);
395 fh_copy_shallow(&cstate->current_fh.fh_handle,
397 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
399 dprintk("nfsd4_open: replay failed"
400 " restoring previous filehandle\n");
402 status = nfserr_replay_me;
406 if (open->op_xdr_error) {
407 status = open->op_xdr_error;
411 status = nfsd4_check_open_attributes(rqstp, cstate, open);
415 /* Openowner is now set, so sequence id will get bumped. Now we need
416 * these checks before we do any creates: */
417 status = nfserr_grace;
418 if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
420 status = nfserr_no_grace;
421 if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
424 switch (open->op_claim_type) {
425 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
426 case NFS4_OPEN_CLAIM_NULL:
427 status = do_open_lookup(rqstp, cstate, open, &resfh);
431 case NFS4_OPEN_CLAIM_PREVIOUS:
432 status = nfs4_check_open_reclaim(&open->op_clientid,
436 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
437 case NFS4_OPEN_CLAIM_FH:
438 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
439 status = do_open_fhandle(rqstp, cstate, open);
442 resfh = &cstate->current_fh;
444 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
445 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
446 dprintk("NFSD: unsupported OPEN claim type %d\n",
447 open->op_claim_type);
448 status = nfserr_notsupp;
451 dprintk("NFSD: Invalid OPEN claim type %d\n",
452 open->op_claim_type);
453 status = nfserr_inval;
457 * nfsd4_process_open2() does the actual opening of the file. If
458 * successful, it (1) truncates the file if open->op_truncate was
459 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
461 status = nfsd4_process_open2(rqstp, resfh, open);
462 WARN(status && open->op_created,
463 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
464 be32_to_cpu(status));
466 if (resfh && resfh != &cstate->current_fh) {
467 fh_dup2(&cstate->current_fh, resfh);
471 nfsd4_cleanup_open_state(cstate, open, status);
472 nfsd4_bump_seqid(cstate, status);
477 * OPEN is the only seqid-mutating operation whose decoding can fail
478 * with a seqid-mutating error (specifically, decoding of user names in
479 * the attributes). Therefore we have to do some processing to look up
480 * the stateowner so that we can bump the seqid.
482 static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
484 struct nfsd4_open *open = (struct nfsd4_open *)&op->u;
486 if (!seqid_mutating_err(ntohl(op->status)))
488 if (nfsd4_has_session(cstate))
490 open->op_xdr_error = op->status;
491 return nfsd4_open(rqstp, cstate, open);
495 * filehandle-manipulating ops.
498 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
499 struct svc_fh **getfh)
501 if (!cstate->current_fh.fh_dentry)
502 return nfserr_nofilehandle;
504 *getfh = &cstate->current_fh;
509 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
510 struct nfsd4_putfh *putfh)
512 fh_put(&cstate->current_fh);
513 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
514 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
516 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
520 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
525 fh_put(&cstate->current_fh);
526 status = exp_pseudoroot(rqstp, &cstate->current_fh);
531 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
534 if (!cstate->save_fh.fh_dentry)
535 return nfserr_restorefh;
537 fh_dup2(&cstate->current_fh, &cstate->save_fh);
538 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
539 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
540 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
546 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
549 if (!cstate->current_fh.fh_dentry)
550 return nfserr_nofilehandle;
552 fh_dup2(&cstate->save_fh, &cstate->current_fh);
553 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
554 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
555 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
564 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
565 struct nfsd4_access *access)
567 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
570 access->ac_resp_access = access->ac_req_access;
571 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
572 &access->ac_supported);
575 static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
578 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
581 * This is opaque to client, so no need to byte-swap. Use
582 * __force to keep sparse happy
584 verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
585 verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
586 memcpy(verifier->data, verf, sizeof(verifier->data));
590 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
591 struct nfsd4_commit *commit)
593 gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
594 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
599 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
600 struct nfsd4_create *create)
606 fh_init(&resfh, NFS4_FHSIZE);
608 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
613 status = check_attr_support(rqstp, cstate, create->cr_bmval,
618 switch (create->cr_type) {
620 status = nfsd_symlink(rqstp, &cstate->current_fh,
621 create->cr_name, create->cr_namelen,
622 create->cr_data, &resfh);
626 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
627 if (MAJOR(rdev) != create->cr_specdata1 ||
628 MINOR(rdev) != create->cr_specdata2)
630 status = nfsd_create(rqstp, &cstate->current_fh,
631 create->cr_name, create->cr_namelen,
632 &create->cr_iattr, S_IFBLK, rdev, &resfh);
636 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
637 if (MAJOR(rdev) != create->cr_specdata1 ||
638 MINOR(rdev) != create->cr_specdata2)
640 status = nfsd_create(rqstp, &cstate->current_fh,
641 create->cr_name, create->cr_namelen,
642 &create->cr_iattr,S_IFCHR, rdev, &resfh);
646 status = nfsd_create(rqstp, &cstate->current_fh,
647 create->cr_name, create->cr_namelen,
648 &create->cr_iattr, S_IFSOCK, 0, &resfh);
652 status = nfsd_create(rqstp, &cstate->current_fh,
653 create->cr_name, create->cr_namelen,
654 &create->cr_iattr, S_IFIFO, 0, &resfh);
658 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
659 status = nfsd_create(rqstp, &cstate->current_fh,
660 create->cr_name, create->cr_namelen,
661 &create->cr_iattr, S_IFDIR, 0, &resfh);
665 status = nfserr_badtype;
671 if (create->cr_label.len)
672 nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);
674 if (create->cr_acl != NULL)
675 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
678 fh_unlock(&cstate->current_fh);
679 set_change_info(&create->cr_cinfo, &cstate->current_fh);
680 fh_dup2(&cstate->current_fh, &resfh);
687 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
688 struct nfsd4_getattr *getattr)
692 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
696 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
699 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
700 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
701 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
703 getattr->ga_fhp = &cstate->current_fh;
708 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
709 struct nfsd4_link *link)
711 __be32 status = nfserr_nofilehandle;
713 if (!cstate->save_fh.fh_dentry)
715 status = nfsd_link(rqstp, &cstate->current_fh,
716 link->li_name, link->li_namelen, &cstate->save_fh);
718 set_change_info(&link->li_cinfo, &cstate->current_fh);
722 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
724 struct svc_fh tmp_fh;
727 fh_init(&tmp_fh, NFS4_FHSIZE);
728 ret = exp_pseudoroot(rqstp, &tmp_fh);
731 if (tmp_fh.fh_dentry == fh->fh_dentry) {
736 return nfsd_lookup(rqstp, fh, "..", 2, fh);
740 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
743 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
747 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
748 struct nfsd4_lookup *lookup)
750 return nfsd_lookup(rqstp, &cstate->current_fh,
751 lookup->lo_name, lookup->lo_len,
752 &cstate->current_fh);
756 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
757 struct nfsd4_read *read)
761 /* no need to check permission - this will be done in nfsd_read() */
763 read->rd_filp = NULL;
764 if (read->rd_offset >= OFFSET_MAX)
768 * If we do a zero copy read, then a client will see read data
769 * that reflects the state of the file *after* performing the
770 * following compound.
772 * To ensure proper ordering, we therefore turn off zero copy if
773 * the client wants us to do more in this compound:
775 if (!nfsd4_last_compound_op(rqstp))
776 clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
779 if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
780 cstate, &read->rd_stateid,
781 RD_STATE, &read->rd_filp))) {
782 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
787 read->rd_rqstp = rqstp;
788 read->rd_fhp = &cstate->current_fh;
793 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
794 struct nfsd4_readdir *readdir)
796 u64 cookie = readdir->rd_cookie;
797 static const nfs4_verifier zeroverf;
799 /* no need to check permission - this will be done in nfsd_readdir() */
801 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
804 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
805 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
806 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
808 if ((cookie == 1) || (cookie == 2) ||
809 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
810 return nfserr_bad_cookie;
812 readdir->rd_rqstp = rqstp;
813 readdir->rd_fhp = &cstate->current_fh;
818 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
819 struct nfsd4_readlink *readlink)
821 readlink->rl_rqstp = rqstp;
822 readlink->rl_fhp = &cstate->current_fh;
827 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
828 struct nfsd4_remove *remove)
832 if (locks_in_grace(SVC_NET(rqstp)))
834 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
835 remove->rm_name, remove->rm_namelen);
837 fh_unlock(&cstate->current_fh);
838 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
844 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
845 struct nfsd4_rename *rename)
847 __be32 status = nfserr_nofilehandle;
849 if (!cstate->save_fh.fh_dentry)
851 if (locks_in_grace(SVC_NET(rqstp)) &&
852 !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK))
854 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
855 rename->rn_snamelen, &cstate->current_fh,
856 rename->rn_tname, rename->rn_tnamelen);
859 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
860 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
865 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
866 struct nfsd4_secinfo *secinfo)
869 struct svc_export *exp;
870 struct dentry *dentry;
873 fh_init(&resfh, NFS4_FHSIZE);
874 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
877 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
878 secinfo->si_name, secinfo->si_namelen,
882 if (dentry->d_inode == NULL) {
886 secinfo->si_exp = exp;
888 if (cstate->minorversion)
889 /* See rfc 5661 section 2.6.3.1.1.8 */
890 fh_put(&cstate->current_fh);
895 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
896 struct nfsd4_secinfo_no_name *sin)
900 switch (sin->sin_style) {
901 case NFS4_SECINFO_STYLE4_CURRENT_FH:
903 case NFS4_SECINFO_STYLE4_PARENT:
904 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
912 sin->sin_exp = exp_get(cstate->current_fh.fh_export);
913 fh_put(&cstate->current_fh);
918 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
919 struct nfsd4_setattr *setattr)
921 __be32 status = nfs_ok;
924 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
925 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
926 &setattr->sa_stateid, WR_STATE, NULL);
928 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
932 err = fh_want_write(&cstate->current_fh);
934 return nfserrno(err);
937 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
942 if (setattr->sa_acl != NULL)
943 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
947 if (setattr->sa_label.len)
948 status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh,
952 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
955 fh_drop_write(&cstate->current_fh);
959 static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write)
962 int buflen = write->wr_buflen;
964 vec[0].iov_base = write->wr_head.iov_base;
965 vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len);
966 buflen -= vec[0].iov_len;
969 vec[i].iov_base = page_address(write->wr_pagelist[i - 1]);
970 vec[i].iov_len = min_t(int, PAGE_SIZE, buflen);
971 buflen -= vec[i].iov_len;
978 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
979 struct nfsd4_write *write)
981 stateid_t *stateid = &write->wr_stateid;
982 struct file *filp = NULL;
983 __be32 status = nfs_ok;
987 /* no need to check permission - this will be done in nfsd_write() */
989 if (write->wr_offset >= OFFSET_MAX)
992 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
993 cstate, stateid, WR_STATE, &filp);
995 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
999 cnt = write->wr_buflen;
1000 write->wr_how_written = write->wr_stable_how;
1001 gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
1003 nvecs = fill_in_write_vector(rqstp->rq_vec, write);
1004 WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
1006 status = nfsd_write(rqstp, &cstate->current_fh, filp,
1007 write->wr_offset, rqstp->rq_vec, nvecs,
1008 &cnt, &write->wr_how_written);
1012 write->wr_bytes_written = cnt;
1018 nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1019 struct nfsd4_fallocate *fallocate, int flags)
1021 __be32 status = nfserr_notsupp;
1024 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
1025 &fallocate->falloc_stateid,
1027 if (status != nfs_ok) {
1028 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1032 status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file,
1033 fallocate->falloc_offset,
1034 fallocate->falloc_length,
1041 nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1042 struct nfsd4_fallocate *fallocate)
1044 return nfsd4_fallocate(rqstp, cstate, fallocate, 0);
1048 nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1049 struct nfsd4_fallocate *fallocate)
1051 return nfsd4_fallocate(rqstp, cstate, fallocate,
1052 FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE);
1056 nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1057 struct nfsd4_seek *seek)
1063 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
1064 &seek->seek_stateid,
1067 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1071 switch (seek->seek_whence) {
1072 case NFS4_CONTENT_DATA:
1075 case NFS4_CONTENT_HOLE:
1079 status = nfserr_union_notsupp;
1084 * Note: This call does change file->f_pos, but nothing in NFSD
1085 * should ever file->f_pos.
1087 seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence);
1088 if (seek->seek_pos < 0)
1089 status = nfserrno(seek->seek_pos);
1090 else if (seek->seek_pos >= i_size_read(file_inode(file)))
1091 seek->seek_eof = true;
1098 /* This routine never returns NFS_OK! If there are no other errors, it
1099 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1100 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1101 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1104 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1105 struct nfsd4_verify *verify)
1111 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
1115 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
1119 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
1120 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
1121 return nfserr_inval;
1122 if (verify->ve_attrlen & 3)
1123 return nfserr_inval;
1126 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1128 count = 4 + (verify->ve_attrlen >> 2);
1129 buf = kmalloc(count << 2, GFP_KERNEL);
1131 return nfserr_jukebox;
1134 status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh,
1135 cstate->current_fh.fh_export,
1136 cstate->current_fh.fh_dentry,
1140 * If nfsd4_encode_fattr() ran out of space, assume that's because
1141 * the attributes are longer (hence different) than those given:
1143 if (status == nfserr_resource)
1144 status = nfserr_not_same;
1149 p = buf + 1 + ntohl(buf[0]);
1150 status = nfserr_not_same;
1151 if (ntohl(*p++) != verify->ve_attrlen)
1153 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
1154 status = nfserr_same;
1162 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1163 struct nfsd4_verify *verify)
1167 status = _nfsd4_verify(rqstp, cstate, verify);
1168 return status == nfserr_not_same ? nfs_ok : status;
1172 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1173 struct nfsd4_verify *verify)
1177 status = _nfsd4_verify(rqstp, cstate, verify);
1178 return status == nfserr_same ? nfs_ok : status;
1185 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1190 static inline void nfsd4_increment_op_stats(u32 opnum)
1192 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1193 nfsdstats.nfs4_opcount[opnum]++;
1196 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1198 typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
1199 typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1200 typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
1202 enum nfsd4_op_flags {
1203 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
1204 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1205 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
1206 /* For rfc 5661 section 2.6.3.1.1: */
1207 OP_HANDLES_WRONGSEC = 1 << 3,
1208 OP_IS_PUTFH_LIKE = 1 << 4,
1210 * These are the ops whose result size we estimate before
1211 * encoding, to avoid performing an op then not being able to
1212 * respond or cache a response. This includes writes and setattrs
1213 * as well as the operations usually called "nonidempotent":
1215 OP_MODIFIES_SOMETHING = 1 << 5,
1217 * Cache compounds containing these ops in the xid-based drc:
1218 * We use the DRC for compounds containing non-idempotent
1219 * operations, *except* those that are 4.1-specific (since
1220 * sessions provide their own EOS), and except for stateful
1221 * operations other than setclientid and setclientid_confirm
1222 * (since sequence numbers provide EOS for open, lock, etc in
1225 OP_CACHEME = 1 << 6,
1227 * These are ops which clear current state id.
1229 OP_CLEAR_STATEID = 1 << 7,
1232 struct nfsd4_operation {
1233 nfsd4op_func op_func;
1236 /* Try to get response size before operation */
1237 nfsd4op_rsize op_rsize_bop;
1238 stateid_getter op_get_currentstateid;
1239 stateid_setter op_set_currentstateid;
1242 static struct nfsd4_operation nfsd4_ops[];
1244 static const char *nfsd4_op_name(unsigned opnum);
1247 * Enforce NFSv4.1 COMPOUND ordering rules:
1249 * Also note, enforced elsewhere:
1250 * - SEQUENCE other than as first op results in
1251 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1252 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1253 * (Enforced in nfsd4_bind_conn_to_session().)
1254 * - DESTROY_SESSION must be the final operation in a compound, if
1255 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1256 * (Enforced in nfsd4_destroy_session().)
1258 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
1260 struct nfsd4_op *op = &args->ops[0];
1262 /* These ordering requirements don't apply to NFSv4.0: */
1263 if (args->minorversion == 0)
1265 /* This is weird, but OK, not our problem: */
1266 if (args->opcnt == 0)
1268 if (op->status == nfserr_op_illegal)
1270 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1271 return nfserr_op_not_in_session;
1272 if (op->opnum == OP_SEQUENCE)
1274 if (args->opcnt != 1)
1275 return nfserr_not_only_op;
1279 static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1281 return &nfsd4_ops[op->opnum];
1284 bool nfsd4_cache_this_op(struct nfsd4_op *op)
1286 if (op->opnum == OP_ILLEGAL)
1288 return OPDESC(op)->op_flags & OP_CACHEME;
1291 static bool need_wrongsec_check(struct svc_rqst *rqstp)
1293 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1294 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1295 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1296 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1297 struct nfsd4_operation *thisd;
1298 struct nfsd4_operation *nextd;
1300 thisd = OPDESC(this);
1302 * Most ops check wronsec on our own; only the putfh-like ops
1303 * have special rules.
1305 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1308 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1309 * put-filehandle operation if we're not going to use the
1312 if (argp->opcnt == resp->opcnt)
1314 if (next->opnum == OP_ILLEGAL)
1316 nextd = OPDESC(next);
1318 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1319 * errors themselves as necessary; others should check for them
1322 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1325 static void svcxdr_init_encode(struct svc_rqst *rqstp,
1326 struct nfsd4_compoundres *resp)
1328 struct xdr_stream *xdr = &resp->xdr;
1329 struct xdr_buf *buf = &rqstp->rq_res;
1330 struct kvec *head = buf->head;
1334 xdr->p = head->iov_base + head->iov_len;
1335 xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack;
1336 /* Tail and page_len should be zero at this point: */
1337 buf->len = buf->head[0].iov_len;
1338 xdr->scratch.iov_len = 0;
1339 xdr->page_ptr = buf->pages - 1;
1340 buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages)
1341 - rqstp->rq_auth_slack;
1348 nfsd4_proc_compound(struct svc_rqst *rqstp,
1349 struct nfsd4_compoundargs *args,
1350 struct nfsd4_compoundres *resp)
1352 struct nfsd4_op *op;
1353 struct nfsd4_operation *opdesc;
1354 struct nfsd4_compound_state *cstate = &resp->cstate;
1355 struct svc_fh *current_fh = &cstate->current_fh;
1356 struct svc_fh *save_fh = &cstate->save_fh;
1359 svcxdr_init_encode(rqstp, resp);
1360 resp->tagp = resp->xdr.p;
1361 /* reserve space for: taglen, tag, and opcnt */
1362 xdr_reserve_space(&resp->xdr, 8 + args->taglen);
1363 resp->taglen = args->taglen;
1364 resp->tag = args->tag;
1365 resp->rqstp = rqstp;
1366 cstate->minorversion = args->minorversion;
1367 fh_init(current_fh, NFS4_FHSIZE);
1368 fh_init(save_fh, NFS4_FHSIZE);
1370 * Don't use the deferral mechanism for NFSv4; compounds make it
1371 * too hard to avoid non-idempotency problems.
1373 clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
1376 * According to RFC3010, this takes precedence over all other errors.
1378 status = nfserr_minor_vers_mismatch;
1379 if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0)
1382 status = nfs41_check_op_ordering(args);
1385 op->status = status;
1389 while (!status && resp->opcnt < args->opcnt) {
1390 op = &args->ops[resp->opcnt++];
1392 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1393 resp->opcnt, args->opcnt, op->opnum,
1394 nfsd4_op_name(op->opnum));
1396 * The XDR decode routines may have pre-set op->status;
1397 * for example, if there is a miscellaneous XDR error
1398 * it will be set to nfserr_bad_xdr.
1401 if (op->opnum == OP_OPEN)
1402 op->status = nfsd4_open_omfg(rqstp, cstate, op);
1406 opdesc = OPDESC(op);
1408 if (!current_fh->fh_dentry) {
1409 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1410 op->status = nfserr_nofilehandle;
1413 } else if (current_fh->fh_export->ex_fslocs.migrated &&
1414 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1415 op->status = nfserr_moved;
1419 fh_clear_wcc(current_fh);
1421 /* If op is non-idempotent */
1422 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1424 * Don't execute this op if we couldn't encode a
1427 u32 plen = opdesc->op_rsize_bop(rqstp, op);
1429 * Plus if there's another operation, make sure
1430 * we'll have space to at least encode an error:
1432 if (resp->opcnt < args->opcnt)
1433 plen += COMPOUND_ERR_SLACK_SPACE;
1434 op->status = nfsd4_check_resp_size(resp, plen);
1440 if (opdesc->op_get_currentstateid)
1441 opdesc->op_get_currentstateid(cstate, &op->u);
1442 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1445 if (opdesc->op_set_currentstateid)
1446 opdesc->op_set_currentstateid(cstate, &op->u);
1448 if (opdesc->op_flags & OP_CLEAR_STATEID)
1449 clear_current_stateid(cstate);
1451 if (need_wrongsec_check(rqstp))
1452 op->status = check_nfsd_access(current_fh->fh_export, rqstp);
1456 /* Only from SEQUENCE */
1457 if (cstate->status == nfserr_replay_cache) {
1458 dprintk("%s NFS4.1 replay from cache\n", __func__);
1459 status = op->status;
1462 if (op->status == nfserr_replay_me) {
1463 op->replay = &cstate->replay_owner->so_replay;
1464 nfsd4_encode_replay(&resp->xdr, op);
1465 status = op->status = op->replay->rp_status;
1467 nfsd4_encode_operation(resp, op);
1468 status = op->status;
1471 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1472 args->ops, args->opcnt, resp->opcnt, op->opnum,
1473 be32_to_cpu(status));
1475 nfsd4_cstate_clear_replay(cstate);
1476 /* XXX Ugh, we need to get rid of this kind of special case: */
1477 if (op->opnum == OP_READ && op->u.read.rd_filp)
1478 fput(op->u.read.rd_filp);
1480 nfsd4_increment_op_stats(op->opnum);
1483 cstate->status = status;
1486 BUG_ON(cstate->replay_owner);
1488 /* Reset deferral mechanism for RPC deferrals */
1489 set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
1490 dprintk("nfsv4 compound returned %d\n", ntohl(status));
1494 #define op_encode_hdr_size (2)
1495 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1496 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1497 #define op_encode_change_info_maxsz (5)
1498 #define nfs4_fattr_bitmap_maxsz (4)
1500 /* We'll fall back on returning no lockowner if run out of space: */
1501 #define op_encode_lockowner_maxsz (0)
1502 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1504 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1506 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1507 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1508 op_encode_ace_maxsz)
1510 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1512 static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1514 return (op_encode_hdr_size) * sizeof(__be32);
1517 static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1519 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1522 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1524 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1527 static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1529 return (op_encode_hdr_size + op_encode_change_info_maxsz
1530 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1534 * Note since this is an idempotent operation we won't insist on failing
1535 * the op prematurely if the estimate is too large. We may turn off splice
1536 * reads unnecessarily.
1538 static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
1539 struct nfsd4_op *op)
1541 u32 *bmap = op->u.getattr.ga_bmval;
1542 u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2];
1545 if (bmap0 & FATTR4_WORD0_ACL)
1546 return svc_max_payload(rqstp);
1547 if (bmap0 & FATTR4_WORD0_FS_LOCATIONS)
1548 return svc_max_payload(rqstp);
1550 if (bmap1 & FATTR4_WORD1_OWNER) {
1551 ret += IDMAP_NAMESZ + 4;
1552 bmap1 &= ~FATTR4_WORD1_OWNER;
1554 if (bmap1 & FATTR4_WORD1_OWNER_GROUP) {
1555 ret += IDMAP_NAMESZ + 4;
1556 bmap1 &= ~FATTR4_WORD1_OWNER_GROUP;
1558 if (bmap0 & FATTR4_WORD0_FILEHANDLE) {
1559 ret += NFS4_FHSIZE + 4;
1560 bmap0 &= ~FATTR4_WORD0_FILEHANDLE;
1562 if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) {
1563 ret += NFSD4_MAX_SEC_LABEL_LEN + 12;
1564 bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL;
1567 * Largest of remaining attributes are 16 bytes (e.g.,
1568 * supported_attributes)
1570 ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2));
1571 /* bitmask, length */
1576 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1578 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1582 static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1584 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1588 static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1590 return (op_encode_hdr_size + op_encode_stateid_maxsz
1591 + op_encode_change_info_maxsz + 1
1592 + nfs4_fattr_bitmap_maxsz
1593 + op_encode_delegation_maxsz) * sizeof(__be32);
1596 static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1598 u32 maxcount = 0, rlen = 0;
1600 maxcount = svc_max_payload(rqstp);
1601 rlen = min(op->u.read.rd_length, maxcount);
1603 return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
1606 static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1608 u32 maxcount = 0, rlen = 0;
1610 maxcount = svc_max_payload(rqstp);
1611 rlen = min(op->u.readdir.rd_maxcount, maxcount);
1613 return (op_encode_hdr_size + op_encode_verifier_maxsz +
1614 XDR_QUADLEN(rlen)) * sizeof(__be32);
1617 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1619 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1623 static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1625 return (op_encode_hdr_size + op_encode_change_info_maxsz
1626 + op_encode_change_info_maxsz) * sizeof(__be32);
1629 static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
1630 struct nfsd4_op *op)
1632 return (op_encode_hdr_size
1633 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
1636 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1638 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1641 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1643 return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
1647 static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1649 return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
1652 static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1654 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1655 1 + 1 + /* eir_flags, spr_how */\
1656 4 + /* spo_must_enforce & _allow with bitmap */\
1657 2 + /*eir_server_owner.so_minor_id */\
1658 /* eir_server_owner.so_major_id<> */\
1659 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1660 /* eir_server_scope<> */\
1661 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1662 1 + /* eir_server_impl_id array length */\
1663 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1666 static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1668 return (op_encode_hdr_size + \
1669 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1670 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1673 static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1675 return (op_encode_hdr_size + \
1676 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1677 2 + /* csr_sequence, csr_flags */\
1678 op_encode_channel_attrs_maxsz + \
1679 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1682 static struct nfsd4_operation nfsd4_ops[] = {
1684 .op_func = (nfsd4op_func)nfsd4_access,
1685 .op_name = "OP_ACCESS",
1688 .op_func = (nfsd4op_func)nfsd4_close,
1689 .op_flags = OP_MODIFIES_SOMETHING,
1690 .op_name = "OP_CLOSE",
1691 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1692 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1693 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
1696 .op_func = (nfsd4op_func)nfsd4_commit,
1697 .op_flags = OP_MODIFIES_SOMETHING,
1698 .op_name = "OP_COMMIT",
1699 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
1702 .op_func = (nfsd4op_func)nfsd4_create,
1703 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
1704 .op_name = "OP_CREATE",
1705 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
1707 [OP_DELEGRETURN] = {
1708 .op_func = (nfsd4op_func)nfsd4_delegreturn,
1709 .op_flags = OP_MODIFIES_SOMETHING,
1710 .op_name = "OP_DELEGRETURN",
1711 .op_rsize_bop = nfsd4_only_status_rsize,
1712 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
1715 .op_func = (nfsd4op_func)nfsd4_getattr,
1716 .op_flags = ALLOWED_ON_ABSENT_FS,
1717 .op_rsize_bop = nfsd4_getattr_rsize,
1718 .op_name = "OP_GETATTR",
1721 .op_func = (nfsd4op_func)nfsd4_getfh,
1722 .op_name = "OP_GETFH",
1725 .op_func = (nfsd4op_func)nfsd4_link,
1726 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1728 .op_name = "OP_LINK",
1729 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
1732 .op_func = (nfsd4op_func)nfsd4_lock,
1733 .op_flags = OP_MODIFIES_SOMETHING,
1734 .op_name = "OP_LOCK",
1735 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
1736 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
1739 .op_func = (nfsd4op_func)nfsd4_lockt,
1740 .op_name = "OP_LOCKT",
1743 .op_func = (nfsd4op_func)nfsd4_locku,
1744 .op_flags = OP_MODIFIES_SOMETHING,
1745 .op_name = "OP_LOCKU",
1746 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1747 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
1750 .op_func = (nfsd4op_func)nfsd4_lookup,
1751 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
1752 .op_name = "OP_LOOKUP",
1755 .op_func = (nfsd4op_func)nfsd4_lookupp,
1756 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
1757 .op_name = "OP_LOOKUPP",
1760 .op_func = (nfsd4op_func)nfsd4_nverify,
1761 .op_name = "OP_NVERIFY",
1764 .op_func = (nfsd4op_func)nfsd4_open,
1765 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1766 .op_name = "OP_OPEN",
1767 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
1768 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
1770 [OP_OPEN_CONFIRM] = {
1771 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1772 .op_flags = OP_MODIFIES_SOMETHING,
1773 .op_name = "OP_OPEN_CONFIRM",
1774 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1776 [OP_OPEN_DOWNGRADE] = {
1777 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1778 .op_flags = OP_MODIFIES_SOMETHING,
1779 .op_name = "OP_OPEN_DOWNGRADE",
1780 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
1781 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
1782 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
1785 .op_func = (nfsd4op_func)nfsd4_putfh,
1786 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1787 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
1788 .op_name = "OP_PUTFH",
1789 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1792 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1793 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1794 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
1795 .op_name = "OP_PUTPUBFH",
1796 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1799 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1800 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1801 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
1802 .op_name = "OP_PUTROOTFH",
1803 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1806 .op_func = (nfsd4op_func)nfsd4_read,
1807 .op_name = "OP_READ",
1808 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
1809 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
1812 .op_func = (nfsd4op_func)nfsd4_readdir,
1813 .op_name = "OP_READDIR",
1814 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
1817 .op_func = (nfsd4op_func)nfsd4_readlink,
1818 .op_name = "OP_READLINK",
1821 .op_func = (nfsd4op_func)nfsd4_remove,
1822 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1823 .op_name = "OP_REMOVE",
1824 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
1827 .op_func = (nfsd4op_func)nfsd4_rename,
1828 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1829 .op_name = "OP_RENAME",
1830 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
1833 .op_func = (nfsd4op_func)nfsd4_renew,
1834 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1835 | OP_MODIFIES_SOMETHING,
1836 .op_name = "OP_RENEW",
1837 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1841 .op_func = (nfsd4op_func)nfsd4_restorefh,
1842 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1843 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
1844 .op_name = "OP_RESTOREFH",
1845 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1848 .op_func = (nfsd4op_func)nfsd4_savefh,
1849 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
1850 .op_name = "OP_SAVEFH",
1851 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1854 .op_func = (nfsd4op_func)nfsd4_secinfo,
1855 .op_flags = OP_HANDLES_WRONGSEC,
1856 .op_name = "OP_SECINFO",
1859 .op_func = (nfsd4op_func)nfsd4_setattr,
1860 .op_name = "OP_SETATTR",
1861 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1862 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
1863 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
1865 [OP_SETCLIENTID] = {
1866 .op_func = (nfsd4op_func)nfsd4_setclientid,
1867 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1868 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1869 .op_name = "OP_SETCLIENTID",
1870 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
1872 [OP_SETCLIENTID_CONFIRM] = {
1873 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1874 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1875 | OP_MODIFIES_SOMETHING | OP_CACHEME,
1876 .op_name = "OP_SETCLIENTID_CONFIRM",
1877 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1880 .op_func = (nfsd4op_func)nfsd4_verify,
1881 .op_name = "OP_VERIFY",
1884 .op_func = (nfsd4op_func)nfsd4_write,
1885 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1886 .op_name = "OP_WRITE",
1887 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1888 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
1890 [OP_RELEASE_LOCKOWNER] = {
1891 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1892 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1893 | OP_MODIFIES_SOMETHING,
1894 .op_name = "OP_RELEASE_LOCKOWNER",
1895 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1898 /* NFSv4.1 operations */
1899 [OP_EXCHANGE_ID] = {
1900 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1901 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1902 | OP_MODIFIES_SOMETHING,
1903 .op_name = "OP_EXCHANGE_ID",
1904 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
1906 [OP_BACKCHANNEL_CTL] = {
1907 .op_func = (nfsd4op_func)nfsd4_backchannel_ctl,
1908 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1909 .op_name = "OP_BACKCHANNEL_CTL",
1910 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1912 [OP_BIND_CONN_TO_SESSION] = {
1913 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1914 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1915 | OP_MODIFIES_SOMETHING,
1916 .op_name = "OP_BIND_CONN_TO_SESSION",
1917 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
1919 [OP_CREATE_SESSION] = {
1920 .op_func = (nfsd4op_func)nfsd4_create_session,
1921 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1922 | OP_MODIFIES_SOMETHING,
1923 .op_name = "OP_CREATE_SESSION",
1924 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
1926 [OP_DESTROY_SESSION] = {
1927 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1928 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1929 | OP_MODIFIES_SOMETHING,
1930 .op_name = "OP_DESTROY_SESSION",
1931 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1934 .op_func = (nfsd4op_func)nfsd4_sequence,
1935 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1936 .op_name = "OP_SEQUENCE",
1937 .op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize,
1939 [OP_DESTROY_CLIENTID] = {
1940 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
1941 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1942 | OP_MODIFIES_SOMETHING,
1943 .op_name = "OP_DESTROY_CLIENTID",
1944 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1946 [OP_RECLAIM_COMPLETE] = {
1947 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1948 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1949 .op_name = "OP_RECLAIM_COMPLETE",
1950 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1952 [OP_SECINFO_NO_NAME] = {
1953 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
1954 .op_flags = OP_HANDLES_WRONGSEC,
1955 .op_name = "OP_SECINFO_NO_NAME",
1957 [OP_TEST_STATEID] = {
1958 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1959 .op_flags = ALLOWED_WITHOUT_FH,
1960 .op_name = "OP_TEST_STATEID",
1962 [OP_FREE_STATEID] = {
1963 .op_func = (nfsd4op_func)nfsd4_free_stateid,
1964 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1965 .op_name = "OP_FREE_STATEID",
1966 .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
1967 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1970 /* NFSv4.2 operations */
1972 .op_func = (nfsd4op_func)nfsd4_allocate,
1973 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1974 .op_name = "OP_ALLOCATE",
1975 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1978 .op_func = (nfsd4op_func)nfsd4_deallocate,
1979 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
1980 .op_name = "OP_DEALLOCATE",
1981 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
1984 .op_func = (nfsd4op_func)nfsd4_seek,
1985 .op_name = "OP_SEEK",
1989 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
1991 struct nfsd4_operation *opdesc;
1992 nfsd4op_rsize estimator;
1994 if (op->opnum == OP_ILLEGAL)
1995 return op_encode_hdr_size * sizeof(__be32);
1996 opdesc = OPDESC(op);
1997 estimator = opdesc->op_rsize_bop;
1998 return estimator ? estimator(rqstp, op) : PAGE_SIZE;
2001 void warn_on_nonidempotent_op(struct nfsd4_op *op)
2003 if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) {
2004 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
2005 op->opnum, nfsd4_op_name(op->opnum));
2010 static const char *nfsd4_op_name(unsigned opnum)
2012 if (opnum < ARRAY_SIZE(nfsd4_ops))
2013 return nfsd4_ops[opnum].op_name;
2014 return "unknown_operation";
2017 #define nfsd4_voidres nfsd4_voidargs
2018 struct nfsd4_voidargs { int dummy; };
2020 static struct svc_procedure nfsd_procedures4[2] = {
2022 .pc_func = (svc_procfunc) nfsd4_proc_null,
2023 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
2024 .pc_argsize = sizeof(struct nfsd4_voidargs),
2025 .pc_ressize = sizeof(struct nfsd4_voidres),
2026 .pc_cachetype = RC_NOCACHE,
2029 [NFSPROC4_COMPOUND] = {
2030 .pc_func = (svc_procfunc) nfsd4_proc_compound,
2031 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
2032 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
2033 .pc_argsize = sizeof(struct nfsd4_compoundargs),
2034 .pc_ressize = sizeof(struct nfsd4_compoundres),
2035 .pc_release = nfsd4_release_compoundargs,
2036 .pc_cachetype = RC_NOCACHE,
2037 .pc_xdrressize = NFSD_BUFSIZE/4,
2041 struct svc_version nfsd_version4 = {
2044 .vs_proc = nfsd_procedures4,
2045 .vs_dispatch = nfsd_dispatch,
2046 .vs_xdrsize = NFS4_SVC_XDRSIZE,