4 * Server-side XDR for NFSv4
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 * TODO: Neil Brown made the following observation: We currently
38 * initially reserve NFSD_BUFSIZE space on the transmit queue and
39 * never release any of that until the request is complete.
40 * It would be good to calculate a new maximum response size while
41 * decoding the COMPOUND, and call svc_reserve with this number
42 * at the end of nfs4svc_decode_compoundargs.
45 #include <linux/param.h>
46 #include <linux/smp.h>
48 #include <linux/namei.h>
49 #include <linux/vfs.h>
50 #include <linux/sunrpc/xdr.h>
51 #include <linux/sunrpc/svc.h>
52 #include <linux/sunrpc/clnt.h>
53 #include <linux/nfsd/nfsd.h>
54 #include <linux/nfsd/state.h>
55 #include <linux/nfsd/xdr4.h>
56 #include <linux/nfsd_idmap.h>
57 #include <linux/nfs4.h>
58 #include <linux/nfs4_acl.h>
59 #include <linux/sunrpc/gss_api.h>
60 #include <linux/sunrpc/svcauth_gss.h>
62 #define NFSDDBG_FACILITY NFSDDBG_XDR
65 * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing
66 * directory in order to indicate to the client that a filesystem boundary is present
67 * We use a fixed fsid for a referral
69 #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL
70 #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL
73 check_filename(char *str, int len, __be32 err)
79 if (isdotent(str, len))
81 for (i = 0; i < len; i++)
88 * START OF "GENERIC" DECODE ROUTINES.
89 * These may look a little ugly since they are imported from a "generic"
90 * set of XDR encode/decode routines which are intended to be shared by
91 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
93 * If the pain of reading these is too great, it should be a straightforward
94 * task to translate them into Linux-specific versions which are more
95 * consistent with the style used in NFSv2/v3...
100 #define DECODE_TAIL \
105 dprintk("NFSD: xdr error (%s:%d)\n", \
106 __FILE__, __LINE__); \
107 status = nfserr_bad_xdr; \
110 #define READ32(x) (x) = ntohl(*p++)
111 #define READ64(x) do { \
112 (x) = (u64)ntohl(*p++) << 32; \
113 (x) |= ntohl(*p++); \
115 #define READTIME(x) do { \
120 #define READMEM(x,nbytes) do { \
122 p += XDR_QUADLEN(nbytes); \
124 #define SAVEMEM(x,nbytes) do { \
125 if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
126 savemem(argp, p, nbytes) : \
128 dprintk("NFSD: xdr error (%s:%d)\n", \
129 __FILE__, __LINE__); \
132 p += XDR_QUADLEN(nbytes); \
134 #define COPYMEM(x,nbytes) do { \
135 memcpy((x), p, nbytes); \
136 p += XDR_QUADLEN(nbytes); \
139 /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */
140 #define READ_BUF(nbytes) do { \
141 if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \
143 argp->p += XDR_QUADLEN(nbytes); \
144 } else if (!(p = read_buf(argp, nbytes))) { \
145 dprintk("NFSD: xdr error (%s:%d)\n", \
146 __FILE__, __LINE__); \
151 static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
153 /* We want more bytes than seem to be available.
154 * Maybe we need a new page, maybe we have just run out
156 unsigned int avail = (char *)argp->end - (char *)argp->p;
158 if (avail + argp->pagelen < nbytes)
160 if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */
162 /* ok, we can do it with the current plus the next page */
163 if (nbytes <= sizeof(argp->tmp))
167 p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL);
173 * The following memcpy is safe because read_buf is always
174 * called with nbytes > avail, and the two cases above both
175 * guarantee p points to at least nbytes bytes.
177 memcpy(p, argp->p, avail);
178 /* step to next page */
179 argp->p = page_address(argp->pagelist[0]);
181 if (argp->pagelen < PAGE_SIZE) {
182 argp->end = p + (argp->pagelen>>2);
185 argp->end = p + (PAGE_SIZE>>2);
186 argp->pagelen -= PAGE_SIZE;
188 memcpy(((char*)p)+avail, argp->p, (nbytes - avail));
189 argp->p += XDR_QUADLEN(nbytes - avail);
194 defer_free(struct nfsd4_compoundargs *argp,
195 void (*release)(const void *), void *p)
199 tb = kmalloc(sizeof(*tb), GFP_KERNEL);
203 tb->release = release;
204 tb->next = argp->to_free;
209 static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes)
211 if (p == argp->tmp) {
212 p = kmalloc(nbytes, GFP_KERNEL);
215 memcpy(p, argp->tmp, nbytes);
217 BUG_ON(p != argp->tmpp);
220 if (defer_free(argp, kfree, p)) {
228 nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
241 READ_BUF(bmlen << 2);
251 nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr,
252 struct nfs4_acl **acl)
254 int expected_len, len = 0;
261 if ((status = nfsd4_decode_bitmap(argp, bmval)))
265 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
266 * read-only attributes return ERR_INVAL.
268 if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
269 return nfserr_attrnotsupp;
270 if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1))
274 READ32(expected_len);
276 if (bmval[0] & FATTR4_WORD0_SIZE) {
279 READ64(iattr->ia_size);
280 iattr->ia_valid |= ATTR_SIZE;
282 if (bmval[0] & FATTR4_WORD0_ACL) {
284 struct nfs4_ace *ace;
286 READ_BUF(4); len += 4;
289 if (nace > NFS4_ACL_MAX)
290 return nfserr_resource;
292 *acl = nfs4_acl_new(nace);
297 defer_free(argp, kfree, *acl);
299 (*acl)->naces = nace;
300 for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) {
301 READ_BUF(16); len += 16;
304 READ32(ace->access_mask);
307 len += XDR_QUADLEN(dummy32) << 2;
308 READMEM(buf, dummy32);
309 ace->whotype = nfs4_acl_get_whotype(buf, dummy32);
311 if (ace->whotype != NFS4_ACL_WHO_NAMED)
313 else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
314 host_err = nfsd_map_name_to_gid(argp->rqstp,
315 buf, dummy32, &ace->who);
317 host_err = nfsd_map_name_to_uid(argp->rqstp,
318 buf, dummy32, &ace->who);
324 if (bmval[1] & FATTR4_WORD1_MODE) {
327 READ32(iattr->ia_mode);
328 iattr->ia_mode &= (S_IFMT | S_IALLUGO);
329 iattr->ia_valid |= ATTR_MODE;
331 if (bmval[1] & FATTR4_WORD1_OWNER) {
336 len += (XDR_QUADLEN(dummy32) << 2);
337 READMEM(buf, dummy32);
338 if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid)))
340 iattr->ia_valid |= ATTR_UID;
342 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) {
347 len += (XDR_QUADLEN(dummy32) << 2);
348 READMEM(buf, dummy32);
349 if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid)))
351 iattr->ia_valid |= ATTR_GID;
353 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
358 case NFS4_SET_TO_CLIENT_TIME:
359 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
360 all 32 bits of 'nseconds'. */
366 READ32(iattr->ia_atime.tv_sec);
367 READ32(iattr->ia_atime.tv_nsec);
368 if (iattr->ia_atime.tv_nsec >= (u32)1000000000)
370 iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
372 case NFS4_SET_TO_SERVER_TIME:
373 iattr->ia_valid |= ATTR_ATIME;
379 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
384 case NFS4_SET_TO_CLIENT_TIME:
385 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
386 all 32 bits of 'nseconds'. */
392 READ32(iattr->ia_mtime.tv_sec);
393 READ32(iattr->ia_mtime.tv_nsec);
394 if (iattr->ia_mtime.tv_nsec >= (u32)1000000000)
396 iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
398 case NFS4_SET_TO_SERVER_TIME:
399 iattr->ia_valid |= ATTR_MTIME;
405 if (len != expected_len)
411 status = nfserrno(host_err);
416 nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)
421 READ32(access->ac_req_access);
427 nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
431 close->cl_stateowner = NULL;
432 READ_BUF(4 + sizeof(stateid_t));
433 READ32(close->cl_seqid);
434 READ32(close->cl_stateid.si_generation);
435 COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
442 nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit)
447 READ64(commit->co_offset);
448 READ32(commit->co_count);
454 nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create)
459 READ32(create->cr_type);
460 switch (create->cr_type) {
463 READ32(create->cr_linklen);
464 READ_BUF(create->cr_linklen);
465 SAVEMEM(create->cr_linkname, create->cr_linklen);
470 READ32(create->cr_specdata1);
471 READ32(create->cr_specdata2);
481 READ32(create->cr_namelen);
482 READ_BUF(create->cr_namelen);
483 SAVEMEM(create->cr_name, create->cr_namelen);
484 if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
487 if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl)))
494 nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr)
498 READ_BUF(sizeof(stateid_t));
499 READ32(dr->dr_stateid.si_generation);
500 COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t));
506 nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr)
508 return nfsd4_decode_bitmap(argp, getattr->ga_bmval);
512 nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)
517 READ32(link->li_namelen);
518 READ_BUF(link->li_namelen);
519 SAVEMEM(link->li_name, link->li_namelen);
520 if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval)))
527 nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
531 lock->lk_replay_owner = NULL;
533 * type, reclaim(boolean), offset, length, new_lock_owner(boolean)
536 READ32(lock->lk_type);
537 if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT))
539 READ32(lock->lk_reclaim);
540 READ64(lock->lk_offset);
541 READ64(lock->lk_length);
542 READ32(lock->lk_is_new);
544 if (lock->lk_is_new) {
546 READ32(lock->lk_new_open_seqid);
547 READ32(lock->lk_new_open_stateid.si_generation);
549 COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t));
550 READ32(lock->lk_new_lock_seqid);
551 COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
552 READ32(lock->lk_new_owner.len);
553 READ_BUF(lock->lk_new_owner.len);
554 READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
557 READ32(lock->lk_old_lock_stateid.si_generation);
558 COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t));
559 READ32(lock->lk_old_lock_seqid);
566 nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)
571 READ32(lockt->lt_type);
572 if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT))
574 READ64(lockt->lt_offset);
575 READ64(lockt->lt_length);
576 COPYMEM(&lockt->lt_clientid, 8);
577 READ32(lockt->lt_owner.len);
578 READ_BUF(lockt->lt_owner.len);
579 READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
585 nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
589 locku->lu_stateowner = NULL;
590 READ_BUF(24 + sizeof(stateid_t));
591 READ32(locku->lu_type);
592 if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
594 READ32(locku->lu_seqid);
595 READ32(locku->lu_stateid.si_generation);
596 COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
597 READ64(locku->lu_offset);
598 READ64(locku->lu_length);
604 nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup)
609 READ32(lookup->lo_len);
610 READ_BUF(lookup->lo_len);
611 SAVEMEM(lookup->lo_name, lookup->lo_len);
612 if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent)))
619 nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
623 memset(open->op_bmval, 0, sizeof(open->op_bmval));
624 open->op_iattr.ia_valid = 0;
625 open->op_stateowner = NULL;
627 /* seqid, share_access, share_deny, clientid, ownerlen */
628 READ_BUF(16 + sizeof(clientid_t));
629 READ32(open->op_seqid);
630 READ32(open->op_share_access);
631 READ32(open->op_share_deny);
632 COPYMEM(&open->op_clientid, sizeof(clientid_t));
633 READ32(open->op_owner.len);
635 /* owner, open_flag */
636 READ_BUF(open->op_owner.len + 4);
637 SAVEMEM(open->op_owner.data, open->op_owner.len);
638 READ32(open->op_create);
639 switch (open->op_create) {
640 case NFS4_OPEN_NOCREATE:
642 case NFS4_OPEN_CREATE:
644 READ32(open->op_createmode);
645 switch (open->op_createmode) {
646 case NFS4_CREATE_UNCHECKED:
647 case NFS4_CREATE_GUARDED:
648 if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl)))
651 case NFS4_CREATE_EXCLUSIVE:
653 COPYMEM(open->op_verf.data, 8);
665 READ32(open->op_claim_type);
666 switch (open->op_claim_type) {
667 case NFS4_OPEN_CLAIM_NULL:
668 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
670 READ32(open->op_fname.len);
671 READ_BUF(open->op_fname.len);
672 SAVEMEM(open->op_fname.data, open->op_fname.len);
673 if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
676 case NFS4_OPEN_CLAIM_PREVIOUS:
678 READ32(open->op_delegate_type);
680 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
681 READ_BUF(sizeof(stateid_t) + 4);
682 COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t));
683 READ32(open->op_fname.len);
684 READ_BUF(open->op_fname.len);
685 SAVEMEM(open->op_fname.data, open->op_fname.len);
686 if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
697 nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf)
701 open_conf->oc_stateowner = NULL;
702 READ_BUF(4 + sizeof(stateid_t));
703 READ32(open_conf->oc_req_stateid.si_generation);
704 COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t));
705 READ32(open_conf->oc_seqid);
711 nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down)
715 open_down->od_stateowner = NULL;
716 READ_BUF(12 + sizeof(stateid_t));
717 READ32(open_down->od_stateid.si_generation);
718 COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t));
719 READ32(open_down->od_seqid);
720 READ32(open_down->od_share_access);
721 READ32(open_down->od_share_deny);
727 nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh)
732 READ32(putfh->pf_fhlen);
733 if (putfh->pf_fhlen > NFS4_FHSIZE)
735 READ_BUF(putfh->pf_fhlen);
736 SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen);
742 nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read)
746 READ_BUF(sizeof(stateid_t) + 12);
747 READ32(read->rd_stateid.si_generation);
748 COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t));
749 READ64(read->rd_offset);
750 READ32(read->rd_length);
756 nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir)
761 READ64(readdir->rd_cookie);
762 COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data));
763 READ32(readdir->rd_dircount); /* just in case you needed a useless field... */
764 READ32(readdir->rd_maxcount);
765 if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval)))
772 nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove)
777 READ32(remove->rm_namelen);
778 READ_BUF(remove->rm_namelen);
779 SAVEMEM(remove->rm_name, remove->rm_namelen);
780 if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent)))
787 nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename)
792 READ32(rename->rn_snamelen);
793 READ_BUF(rename->rn_snamelen + 4);
794 SAVEMEM(rename->rn_sname, rename->rn_snamelen);
795 READ32(rename->rn_tnamelen);
796 READ_BUF(rename->rn_tnamelen);
797 SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
798 if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent)))
800 if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval)))
807 nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)
811 READ_BUF(sizeof(clientid_t));
812 COPYMEM(clientid, sizeof(clientid_t));
818 nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
819 struct nfsd4_secinfo *secinfo)
824 READ32(secinfo->si_namelen);
825 READ_BUF(secinfo->si_namelen);
826 SAVEMEM(secinfo->si_name, secinfo->si_namelen);
827 status = check_filename(secinfo->si_name, secinfo->si_namelen,
835 nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
839 READ_BUF(sizeof(stateid_t));
840 READ32(setattr->sa_stateid.si_generation);
841 COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t));
842 if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl)))
849 nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid)
854 COPYMEM(setclientid->se_verf.data, 8);
855 READ32(setclientid->se_namelen);
857 READ_BUF(setclientid->se_namelen + 8);
858 SAVEMEM(setclientid->se_name, setclientid->se_namelen);
859 READ32(setclientid->se_callback_prog);
860 READ32(setclientid->se_callback_netid_len);
862 READ_BUF(setclientid->se_callback_netid_len + 4);
863 SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len);
864 READ32(setclientid->se_callback_addr_len);
866 READ_BUF(setclientid->se_callback_addr_len + 4);
867 SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len);
868 READ32(setclientid->se_callback_ident);
874 nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c)
878 READ_BUF(8 + sizeof(nfs4_verifier));
879 COPYMEM(&scd_c->sc_clientid, 8);
880 COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier));
885 /* Also used for NVERIFY */
887 nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify)
890 struct nfsd4_compoundargs save = {
893 .rqstp = argp->rqstp,
896 struct iattr ve_iattr; /* request */
897 struct nfs4_acl *ve_acl; /* request */
901 if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval)))
904 /* For convenience's sake, we compare raw xdr'd attributes in
905 * nfsd4_proc_verify; however we still decode here just to return
906 * correct error in case of bad xdr. */
908 status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl);
909 if (status == nfserr_inval) {
910 status = nfserrno(status);
915 READ32(verify->ve_attrlen);
916 READ_BUF(verify->ve_attrlen);
917 SAVEMEM(verify->ve_attrval, verify->ve_attrlen);
923 nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
930 READ_BUF(sizeof(stateid_opaque_t) + 20);
931 READ32(write->wr_stateid.si_generation);
932 COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t));
933 READ64(write->wr_offset);
934 READ32(write->wr_stable_how);
935 if (write->wr_stable_how > 2)
937 READ32(write->wr_buflen);
939 /* Sorry .. no magic macros for this.. *
940 * READ_BUF(write->wr_buflen);
941 * SAVEMEM(write->wr_buf, write->wr_buflen);
943 avail = (char*)argp->end - (char*)argp->p;
944 if (avail + argp->pagelen < write->wr_buflen) {
945 dprintk("NFSD: xdr error (%s:%d)\n",
949 argp->rqstp->rq_vec[0].iov_base = p;
950 argp->rqstp->rq_vec[0].iov_len = avail;
952 len = write->wr_buflen;
953 while (len > argp->rqstp->rq_vec[v].iov_len) {
954 len -= argp->rqstp->rq_vec[v].iov_len;
956 argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]);
958 if (argp->pagelen >= PAGE_SIZE) {
959 argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE;
960 argp->pagelen -= PAGE_SIZE;
962 argp->rqstp->rq_vec[v].iov_len = argp->pagelen;
963 argp->pagelen -= len;
966 argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len);
967 argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2));
968 argp->rqstp->rq_vec[v].iov_len = len;
969 write->wr_vlen = v+1;
975 nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner)
980 COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t));
981 READ32(rlockowner->rl_owner.len);
982 READ_BUF(rlockowner->rl_owner.len);
983 READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
989 nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)
994 typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
996 static nfsd4_dec nfsd4_dec_ops[] = {
997 [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access,
998 [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close,
999 [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit,
1000 [OP_CREATE] (nfsd4_dec)nfsd4_decode_create,
1001 [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn,
1002 [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr,
1003 [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop,
1004 [OP_LINK] (nfsd4_dec)nfsd4_decode_link,
1005 [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock,
1006 [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt,
1007 [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku,
1008 [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup,
1009 [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop,
1010 [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify,
1011 [OP_OPEN] (nfsd4_dec)nfsd4_decode_open,
1012 [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_open_confirm,
1013 [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade,
1014 [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh,
1015 [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop,
1016 [OP_READ] (nfsd4_dec)nfsd4_decode_read,
1017 [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir,
1018 [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop,
1019 [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove,
1020 [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename,
1021 [OP_RENEW] (nfsd4_dec)nfsd4_decode_renew,
1022 [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop,
1023 [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop,
1024 [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo,
1025 [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr,
1026 [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_setclientid,
1027 [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_setclientid_confirm,
1028 [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify,
1029 [OP_WRITE] (nfsd4_dec)nfsd4_decode_write,
1030 [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_release_lockowner,
1034 nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
1037 struct nfsd4_op *op;
1041 * XXX: According to spec, we should check the tag
1042 * for UTF-8 compliance. I'm postponing this for
1043 * now because it seems that some clients do use
1047 READ32(argp->taglen);
1048 READ_BUF(argp->taglen + 8);
1049 SAVEMEM(argp->tag, argp->taglen);
1050 READ32(argp->minorversion);
1051 READ32(argp->opcnt);
1053 if (argp->taglen > NFSD4_MAX_TAGLEN)
1055 if (argp->opcnt > 100)
1058 if (argp->opcnt > ARRAY_SIZE(argp->iops)) {
1059 argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL);
1061 argp->ops = argp->iops;
1062 dprintk("nfsd: couldn't allocate room for COMPOUND\n");
1067 if (argp->minorversion != 0)
1070 for (i = 0; i < argp->opcnt; i++) {
1075 * We can't use READ_BUF() here because we need to handle
1076 * a missing opcode as an OP_WRITE + 1. So we need to check
1077 * to see if we're truly at the end of our buffer or if there
1078 * is another page we need to flip to.
1081 if (argp->p == argp->end) {
1082 if (argp->pagelen < 4) {
1083 /* There isn't an opcode still on the wire */
1084 op->opnum = OP_WRITE + 1;
1085 op->status = nfserr_bad_xdr;
1091 * False alarm. We just hit a page boundary, but there
1092 * is still data available. Move pointer across page
1093 * boundary. *snip from READ_BUF*
1095 argp->p = page_address(argp->pagelist[0]);
1097 if (argp->pagelen < PAGE_SIZE) {
1098 argp->end = p + (argp->pagelen>>2);
1101 argp->end = p + (PAGE_SIZE>>2);
1102 argp->pagelen -= PAGE_SIZE;
1105 op->opnum = ntohl(*argp->p++);
1107 if (op->opnum >= OP_ACCESS && op->opnum < ARRAY_SIZE(nfsd4_dec_ops))
1108 op->status = nfsd4_dec_ops[op->opnum](argp, &op->u);
1110 op->opnum = OP_ILLEGAL;
1111 op->status = nfserr_op_illegal;
1123 * END OF "GENERIC" DECODE ROUTINES.
1127 * START OF "GENERIC" ENCODE ROUTINES.
1128 * These may look a little ugly since they are imported from a "generic"
1129 * set of XDR encode/decode routines which are intended to be shared by
1130 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1132 * If the pain of reading these is too great, it should be a straightforward
1133 * task to translate them into Linux-specific versions which are more
1134 * consistent with the style used in NFSv2/v3...
1136 #define ENCODE_HEAD __be32 *p
1138 #define WRITE32(n) *p++ = htonl(n)
1139 #define WRITE64(n) do { \
1140 *p++ = htonl((u32)((n) >> 32)); \
1141 *p++ = htonl((u32)(n)); \
1143 #define WRITEMEM(ptr,nbytes) do if (nbytes > 0) { \
1144 *(p + XDR_QUADLEN(nbytes) -1) = 0; \
1145 memcpy(p, ptr, nbytes); \
1146 p += XDR_QUADLEN(nbytes); \
1148 #define WRITECINFO(c) do { \
1149 *p++ = htonl(c.atomic); \
1150 *p++ = htonl(c.before_ctime_sec); \
1151 *p++ = htonl(c.before_ctime_nsec); \
1152 *p++ = htonl(c.after_ctime_sec); \
1153 *p++ = htonl(c.after_ctime_nsec); \
1156 #define RESERVE_SPACE(nbytes) do { \
1158 BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
1160 #define ADJUST_ARGS() resp->p = p
1163 * Header routine to setup seqid operation replay cache
1165 #define ENCODE_SEQID_OP_HEAD \
1172 * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This
1173 * is where sequence id's are incremented, and the replay cache is filled.
1174 * Note that we increment sequence id's here, at the last moment, so we're sure
1175 * we know whether the error to be returned is a sequence id mutating error.
1178 #define ENCODE_SEQID_OP_TAIL(stateowner) do { \
1179 if (seqid_mutating_err(nfserr) && stateowner) { \
1180 stateowner->so_seqid++; \
1181 stateowner->so_replay.rp_status = nfserr; \
1182 stateowner->so_replay.rp_buflen = \
1183 (((char *)(resp)->p - (char *)save)); \
1184 memcpy(stateowner->so_replay.rp_buf, save, \
1185 stateowner->so_replay.rp_buflen); \
1188 /* Encode as an array of strings the string given with components
1191 static __be32 nfsd4_encode_components(char sep, char *components,
1192 __be32 **pp, int *buflen)
1196 int strlen, count=0;
1199 dprintk("nfsd4_encode_components(%s)\n", components);
1200 if ((*buflen -= 4) < 0)
1201 return nfserr_resource;
1202 WRITE32(0); /* We will fill this in with @count later */
1203 end = str = components;
1205 for (; *end && (*end != sep); end++)
1206 ; /* Point to end of component */
1209 if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0)
1210 return nfserr_resource;
1212 WRITEMEM(str, strlen);
1226 * encode a location element of a fs_locations structure
1228 static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location,
1229 __be32 **pp, int *buflen)
1234 status = nfsd4_encode_components(':', location->hosts, &p, buflen);
1237 status = nfsd4_encode_components('/', location->path, &p, buflen);
1245 * Return the path to an export point in the pseudo filesystem namespace
1246 * Returned string is safe to use as long as the caller holds a reference
1249 static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat)
1251 struct svc_fh tmp_fh;
1252 char *path, *rootpath;
1254 fh_init(&tmp_fh, NFS4_FHSIZE);
1255 *stat = exp_pseudoroot(rqstp, &tmp_fh);
1258 rootpath = tmp_fh.fh_export->ex_pathname;
1260 path = exp->ex_pathname;
1262 if (strncmp(path, rootpath, strlen(rootpath))) {
1263 dprintk("nfsd: fs_locations failed;"
1264 "%s is not contained in %s\n", path, rootpath);
1265 *stat = nfserr_notsupp;
1269 return path + strlen(rootpath);
1273 * encode a fs_locations structure
1275 static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
1276 struct svc_export *exp,
1277 __be32 **pp, int *buflen)
1282 struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
1283 char *root = nfsd4_path(rqstp, exp, &status);
1287 status = nfsd4_encode_components('/', root, &p, buflen);
1290 if ((*buflen -= 4) < 0)
1291 return nfserr_resource;
1292 WRITE32(fslocs->locations_count);
1293 for (i=0; i<fslocs->locations_count; i++) {
1294 status = nfsd4_encode_fs_location4(&fslocs->locations[i],
1303 static u32 nfs4_ftypes[16] = {
1304 NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
1305 NF4DIR, NF4BAD, NF4BLK, NF4BAD,
1306 NF4REG, NF4BAD, NF4LNK, NF4BAD,
1307 NF4SOCK, NF4BAD, NF4LNK, NF4BAD,
1311 nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
1312 __be32 **p, int *buflen)
1316 if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4)
1317 return nfserr_resource;
1318 if (whotype != NFS4_ACL_WHO_NAMED)
1319 status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1));
1321 status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1));
1323 status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1));
1325 return nfserrno(status);
1326 *p = xdr_encode_opaque(*p, NULL, status);
1327 *buflen -= (XDR_QUADLEN(status) << 2) + 4;
1328 BUG_ON(*buflen < 0);
1332 static inline __be32
1333 nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen)
1335 return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen);
1338 static inline __be32
1339 nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen)
1341 return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen);
1344 static inline __be32
1345 nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
1346 __be32 **p, int *buflen)
1348 return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen);
1351 #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
1352 FATTR4_WORD0_RDATTR_ERROR)
1353 #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
1355 static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
1357 /* As per referral draft: */
1358 if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS ||
1359 *bmval1 & ~WORD1_ABSENT_FS_ATTRS) {
1360 if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR ||
1361 *bmval0 & FATTR4_WORD0_FS_LOCATIONS)
1362 *rdattr_err = NFSERR_MOVED;
1364 return nfserr_moved;
1366 *bmval0 &= WORD0_ABSENT_FS_ATTRS;
1367 *bmval1 &= WORD1_ABSENT_FS_ATTRS;
1372 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
1375 * @countp is the buffer size in _words_; upon successful return this becomes
1376 * replaced with the number of words written.
1379 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1380 struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval,
1381 struct svc_rqst *rqstp, int ignore_crossmnt)
1383 u32 bmval0 = bmval[0];
1384 u32 bmval1 = bmval[1];
1386 struct svc_fh tempfh;
1387 struct kstatfs statfs;
1388 int buflen = *countp << 2;
1397 struct nfs4_acl *acl = NULL;
1399 BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
1400 BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0);
1401 BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1);
1403 if (exp->ex_fslocs.migrated) {
1404 status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
1409 err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
1412 if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
1413 FATTR4_WORD0_MAXNAME)) ||
1414 (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
1415 FATTR4_WORD1_SPACE_TOTAL))) {
1416 err = vfs_statfs(dentry, &statfs);
1420 if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) {
1421 fh_init(&tempfh, NFS4_FHSIZE);
1422 status = fh_compose(&tempfh, exp, dentry, NULL);
1427 if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT
1428 | FATTR4_WORD0_SUPPORTED_ATTRS)) {
1429 err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
1430 aclsupport = (err == 0);
1431 if (bmval0 & FATTR4_WORD0_ACL) {
1432 if (err == -EOPNOTSUPP)
1433 bmval0 &= ~FATTR4_WORD0_ACL;
1434 else if (err == -EINVAL) {
1435 status = nfserr_attrnotsupp;
1437 } else if (err != 0)
1441 if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
1442 if (exp->ex_fslocs.locations == NULL) {
1443 bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS;
1446 if ((buflen -= 16) < 0)
1452 attrlenp = p++; /* to be backfilled later */
1454 if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
1455 u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0;
1456 if ((buflen -= 12) < 0)
1459 word0 &= ~FATTR4_WORD0_ACL;
1460 if (!exp->ex_fslocs.locations)
1461 word0 &= ~FATTR4_WORD0_FS_LOCATIONS;
1464 WRITE32(NFSD_SUPPORTED_ATTRS_WORD1);
1466 if (bmval0 & FATTR4_WORD0_TYPE) {
1467 if ((buflen -= 4) < 0)
1469 dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12];
1470 if (dummy == NF4BAD)
1471 goto out_serverfault;
1474 if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) {
1475 if ((buflen -= 4) < 0)
1477 if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)
1478 WRITE32(NFS4_FH_PERSISTENT);
1480 WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
1482 if (bmval0 & FATTR4_WORD0_CHANGE) {
1484 * Note: This _must_ be consistent with the scheme for writing
1485 * change_info, so any changes made here must be reflected there
1486 * as well. (See xdr4.h:set_change_info() and the WRITECINFO()
1489 if ((buflen -= 8) < 0)
1491 WRITE32(stat.ctime.tv_sec);
1492 WRITE32(stat.ctime.tv_nsec);
1494 if (bmval0 & FATTR4_WORD0_SIZE) {
1495 if ((buflen -= 8) < 0)
1499 if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) {
1500 if ((buflen -= 4) < 0)
1504 if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) {
1505 if ((buflen -= 4) < 0)
1509 if (bmval0 & FATTR4_WORD0_NAMED_ATTR) {
1510 if ((buflen -= 4) < 0)
1514 if (bmval0 & FATTR4_WORD0_FSID) {
1515 if ((buflen -= 16) < 0)
1517 if (exp->ex_fslocs.migrated) {
1518 WRITE64(NFS4_REFERRAL_FSID_MAJOR);
1519 WRITE64(NFS4_REFERRAL_FSID_MINOR);
1520 } else switch(fsid_source(fhp)) {
1521 case FSIDSOURCE_FSID:
1522 WRITE64((u64)exp->ex_fsid);
1525 case FSIDSOURCE_DEV:
1527 WRITE32(MAJOR(stat.dev));
1529 WRITE32(MINOR(stat.dev));
1531 case FSIDSOURCE_UUID:
1532 WRITEMEM(exp->ex_uuid, 16);
1536 if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) {
1537 if ((buflen -= 4) < 0)
1541 if (bmval0 & FATTR4_WORD0_LEASE_TIME) {
1542 if ((buflen -= 4) < 0)
1544 WRITE32(NFSD_LEASE_TIME);
1546 if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) {
1547 if ((buflen -= 4) < 0)
1549 WRITE32(rdattr_err);
1551 if (bmval0 & FATTR4_WORD0_ACL) {
1552 struct nfs4_ace *ace;
1555 if ((buflen -= 4) < 0)
1561 if ((buflen -= 4) < 0)
1563 WRITE32(acl->naces);
1565 for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) {
1566 if ((buflen -= 4*3) < 0)
1570 WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL);
1571 status = nfsd4_encode_aclname(rqstp, ace->whotype,
1572 ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP,
1574 if (status == nfserr_resource)
1581 if (bmval0 & FATTR4_WORD0_ACLSUPPORT) {
1582 if ((buflen -= 4) < 0)
1584 WRITE32(aclsupport ?
1585 ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0);
1587 if (bmval0 & FATTR4_WORD0_CANSETTIME) {
1588 if ((buflen -= 4) < 0)
1592 if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) {
1593 if ((buflen -= 4) < 0)
1597 if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) {
1598 if ((buflen -= 4) < 0)
1602 if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) {
1603 if ((buflen -= 4) < 0)
1607 if (bmval0 & FATTR4_WORD0_FILEHANDLE) {
1608 buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4;
1611 WRITE32(fhp->fh_handle.fh_size);
1612 WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size);
1614 if (bmval0 & FATTR4_WORD0_FILEID) {
1615 if ((buflen -= 8) < 0)
1619 if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
1620 if ((buflen -= 8) < 0)
1622 WRITE64((u64) statfs.f_ffree);
1624 if (bmval0 & FATTR4_WORD0_FILES_FREE) {
1625 if ((buflen -= 8) < 0)
1627 WRITE64((u64) statfs.f_ffree);
1629 if (bmval0 & FATTR4_WORD0_FILES_TOTAL) {
1630 if ((buflen -= 8) < 0)
1632 WRITE64((u64) statfs.f_files);
1634 if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
1635 status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen);
1636 if (status == nfserr_resource)
1641 if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) {
1642 if ((buflen -= 4) < 0)
1646 if (bmval0 & FATTR4_WORD0_MAXFILESIZE) {
1647 if ((buflen -= 8) < 0)
1651 if (bmval0 & FATTR4_WORD0_MAXLINK) {
1652 if ((buflen -= 4) < 0)
1656 if (bmval0 & FATTR4_WORD0_MAXNAME) {
1657 if ((buflen -= 4) < 0)
1659 WRITE32(statfs.f_namelen);
1661 if (bmval0 & FATTR4_WORD0_MAXREAD) {
1662 if ((buflen -= 8) < 0)
1664 WRITE64((u64) svc_max_payload(rqstp));
1666 if (bmval0 & FATTR4_WORD0_MAXWRITE) {
1667 if ((buflen -= 8) < 0)
1669 WRITE64((u64) svc_max_payload(rqstp));
1671 if (bmval1 & FATTR4_WORD1_MODE) {
1672 if ((buflen -= 4) < 0)
1674 WRITE32(stat.mode & S_IALLUGO);
1676 if (bmval1 & FATTR4_WORD1_NO_TRUNC) {
1677 if ((buflen -= 4) < 0)
1681 if (bmval1 & FATTR4_WORD1_NUMLINKS) {
1682 if ((buflen -= 4) < 0)
1684 WRITE32(stat.nlink);
1686 if (bmval1 & FATTR4_WORD1_OWNER) {
1687 status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen);
1688 if (status == nfserr_resource)
1693 if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
1694 status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen);
1695 if (status == nfserr_resource)
1700 if (bmval1 & FATTR4_WORD1_RAWDEV) {
1701 if ((buflen -= 8) < 0)
1703 WRITE32((u32) MAJOR(stat.rdev));
1704 WRITE32((u32) MINOR(stat.rdev));
1706 if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) {
1707 if ((buflen -= 8) < 0)
1709 dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize;
1712 if (bmval1 & FATTR4_WORD1_SPACE_FREE) {
1713 if ((buflen -= 8) < 0)
1715 dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize;
1718 if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) {
1719 if ((buflen -= 8) < 0)
1721 dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize;
1724 if (bmval1 & FATTR4_WORD1_SPACE_USED) {
1725 if ((buflen -= 8) < 0)
1727 dummy64 = (u64)stat.blocks << 9;
1730 if (bmval1 & FATTR4_WORD1_TIME_ACCESS) {
1731 if ((buflen -= 12) < 0)
1734 WRITE32(stat.atime.tv_sec);
1735 WRITE32(stat.atime.tv_nsec);
1737 if (bmval1 & FATTR4_WORD1_TIME_DELTA) {
1738 if ((buflen -= 12) < 0)
1744 if (bmval1 & FATTR4_WORD1_TIME_METADATA) {
1745 if ((buflen -= 12) < 0)
1748 WRITE32(stat.ctime.tv_sec);
1749 WRITE32(stat.ctime.tv_nsec);
1751 if (bmval1 & FATTR4_WORD1_TIME_MODIFY) {
1752 if ((buflen -= 12) < 0)
1755 WRITE32(stat.mtime.tv_sec);
1756 WRITE32(stat.mtime.tv_nsec);
1758 if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
1759 if ((buflen -= 8) < 0)
1762 * Get parent's attributes if not ignoring crossmount
1763 * and this is the root of a cross-mounted filesystem.
1765 if (ignore_crossmnt == 0 &&
1766 exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
1767 err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
1768 exp->ex_path.mnt->mnt_mountpoint, &stat);
1774 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
1775 *countp = p - buffer;
1784 status = nfserrno(err);
1788 status = nfserr_resource;
1791 status = nfserr_serverfault;
1795 static inline int attributes_need_mount(u32 *bmval)
1797 if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
1799 if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID)
1805 nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
1806 const char *name, int namlen, __be32 *p, int *buflen)
1808 struct svc_export *exp = cd->rd_fhp->fh_export;
1809 struct dentry *dentry;
1811 int ignore_crossmnt = 0;
1813 dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
1815 return nfserrno(PTR_ERR(dentry));
1819 * In the case of a mountpoint, the client may be asking for
1820 * attributes that are only properties of the underlying filesystem
1821 * as opposed to the cross-mounted file system. In such a case,
1822 * we will not follow the cross mount and will fill the attribtutes
1823 * directly from the mountpoint dentry.
1825 if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval))
1826 ignore_crossmnt = 1;
1827 else if (d_mountpoint(dentry)) {
1831 * Why the heck aren't we just using nfsd_lookup??
1832 * Different "."/".." handling? Something else?
1833 * At least, add a comment here to explain....
1835 err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp);
1837 nfserr = nfserrno(err);
1840 nfserr = check_nfsd_access(exp, cd->rd_rqstp);
1845 nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
1846 cd->rd_rqstp, ignore_crossmnt);
1854 nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr)
1861 *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */
1862 *p++ = htonl(0); /* bmval1 */
1865 *p++ = nfserr; /* no htonl */
1866 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
1871 nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
1872 loff_t offset, u64 ino, unsigned int d_type)
1874 struct readdir_cd *ccd = ccdv;
1875 struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
1877 __be32 *p = cd->buffer;
1878 __be32 nfserr = nfserr_toosmall;
1880 /* In nfsv4, "." and ".." never make it onto the wire.. */
1881 if (name && isdotent(name, namlen)) {
1882 cd->common.err = nfs_ok;
1887 xdr_encode_hyper(cd->offset, (u64) offset);
1889 buflen = cd->buflen - 4 - XDR_QUADLEN(namlen);
1893 *p++ = xdr_one; /* mark entry present */
1894 cd->offset = p; /* remember pointer */
1895 p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
1896 p = xdr_encode_array(p, name, namlen); /* name length & name */
1898 nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen);
1903 case nfserr_resource:
1904 nfserr = nfserr_toosmall;
1910 * If the client requested the RDATTR_ERROR attribute,
1911 * we stuff the error code into this attribute
1912 * and continue. If this attribute was not requested,
1913 * then in accordance with the spec, we fail the
1914 * entire READDIR operation(!)
1916 if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR))
1918 p = nfsd4_encode_rdattr_error(p, buflen, nfserr);
1920 nfserr = nfserr_toosmall;
1924 cd->buflen -= (p - cd->buffer);
1926 cd->common.err = nfs_ok;
1929 cd->common.err = nfserr;
1934 nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
1940 WRITE32(access->ac_supported);
1941 WRITE32(access->ac_resp_access);
1947 nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
1949 ENCODE_SEQID_OP_HEAD;
1952 RESERVE_SPACE(sizeof(stateid_t));
1953 WRITE32(close->cl_stateid.si_generation);
1954 WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
1957 ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
1962 nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
1968 WRITEMEM(commit->co_verf.data, 8);
1974 nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
1980 WRITECINFO(create->cr_cinfo);
1982 WRITE32(create->cr_bmval[0]);
1983 WRITE32(create->cr_bmval[1]);
1989 nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr)
1991 struct svc_fh *fhp = getattr->ga_fhp;
1997 buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
1998 nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
1999 resp->p, &buflen, getattr->ga_bmval,
2007 nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh *fhp)
2013 len = fhp->fh_handle.fh_size;
2014 RESERVE_SPACE(len + 4);
2016 WRITEMEM(&fhp->fh_handle.fh_base, len);
2022 * Including all fields other than the name, a LOCK4denied structure requires
2023 * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
2026 nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
2030 RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
2031 WRITE64(ld->ld_start);
2032 WRITE64(ld->ld_length);
2033 WRITE32(ld->ld_type);
2035 WRITEMEM(&ld->ld_clientid, 8);
2036 WRITE32(ld->ld_sop->so_owner.len);
2037 WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len);
2038 kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner);
2039 } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
2040 WRITE64((u64)0); /* clientid */
2041 WRITE32(0); /* length of owner name */
2047 nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
2049 ENCODE_SEQID_OP_HEAD;
2052 RESERVE_SPACE(4 + sizeof(stateid_t));
2053 WRITE32(lock->lk_resp_stateid.si_generation);
2054 WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
2056 } else if (nfserr == nfserr_denied)
2057 nfsd4_encode_lock_denied(resp, &lock->lk_denied);
2059 ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
2063 nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
2065 if (nfserr == nfserr_denied)
2066 nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
2070 nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
2072 ENCODE_SEQID_OP_HEAD;
2075 RESERVE_SPACE(sizeof(stateid_t));
2076 WRITE32(locku->lu_stateid.si_generation);
2077 WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
2081 ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
2086 nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
2092 WRITECINFO(link->li_cinfo);
2099 nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
2101 ENCODE_SEQID_OP_HEAD;
2106 RESERVE_SPACE(36 + sizeof(stateid_t));
2107 WRITE32(open->op_stateid.si_generation);
2108 WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t));
2109 WRITECINFO(open->op_cinfo);
2110 WRITE32(open->op_rflags);
2112 WRITE32(open->op_bmval[0]);
2113 WRITE32(open->op_bmval[1]);
2114 WRITE32(open->op_delegate_type);
2117 switch (open->op_delegate_type) {
2118 case NFS4_OPEN_DELEGATE_NONE:
2120 case NFS4_OPEN_DELEGATE_READ:
2121 RESERVE_SPACE(20 + sizeof(stateid_t));
2122 WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
2123 WRITE32(open->op_recall);
2126 * TODO: ACE's in delegations
2128 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
2131 WRITE32(0); /* XXX: is NULL principal ok? */
2134 case NFS4_OPEN_DELEGATE_WRITE:
2135 RESERVE_SPACE(32 + sizeof(stateid_t));
2136 WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
2140 * TODO: space_limit's in delegations
2142 WRITE32(NFS4_LIMIT_SIZE);
2147 * TODO: ACE's in delegations
2149 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
2152 WRITE32(0); /* XXX: is NULL principal ok? */
2158 /* XXX save filehandle here */
2160 ENCODE_SEQID_OP_TAIL(open->op_stateowner);
2164 nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
2166 ENCODE_SEQID_OP_HEAD;
2169 RESERVE_SPACE(sizeof(stateid_t));
2170 WRITE32(oc->oc_resp_stateid.si_generation);
2171 WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
2175 ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
2179 nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
2181 ENCODE_SEQID_OP_HEAD;
2184 RESERVE_SPACE(sizeof(stateid_t));
2185 WRITE32(od->od_stateid.si_generation);
2186 WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t));
2190 ENCODE_SEQID_OP_TAIL(od->od_stateowner);
2194 nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
2195 struct nfsd4_read *read)
2199 unsigned long maxcount;
2205 if (resp->xbuf->page_len)
2206 return nfserr_resource;
2208 RESERVE_SPACE(8); /* eof flag and byte count */
2210 maxcount = svc_max_payload(resp->rqstp);
2211 if (maxcount > read->rd_length)
2212 maxcount = read->rd_length;
2217 pn = resp->rqstp->rq_resused++;
2218 resp->rqstp->rq_vec[v].iov_base =
2219 page_address(resp->rqstp->rq_respages[pn]);
2220 resp->rqstp->rq_vec[v].iov_len =
2221 len < PAGE_SIZE ? len : PAGE_SIZE;
2227 nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp,
2228 read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
2231 if (nfserr == nfserr_symlink)
2232 nfserr = nfserr_inval;
2235 eof = (read->rd_offset + maxcount >=
2236 read->rd_fhp->fh_dentry->d_inode->i_size);
2241 resp->xbuf->head[0].iov_len = (char*)p
2242 - (char*)resp->xbuf->head[0].iov_base;
2243 resp->xbuf->page_len = maxcount;
2245 /* Use rest of head for padding and remaining ops: */
2246 resp->xbuf->tail[0].iov_base = p;
2247 resp->xbuf->tail[0].iov_len = 0;
2251 resp->xbuf->tail[0].iov_base += maxcount&3;
2252 resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
2259 nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink)
2267 if (resp->xbuf->page_len)
2268 return nfserr_resource;
2270 page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
2272 maxcount = PAGE_SIZE;
2276 * XXX: By default, the ->readlink() VFS op will truncate symlinks
2277 * if they would overflow the buffer. Is this kosher in NFSv4? If
2278 * not, one easy fix is: if ->readlink() precisely fills the buffer,
2279 * assume that truncation occurred, and return NFS4ERR_RESOURCE.
2281 nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount);
2282 if (nfserr == nfserr_isdir)
2283 return nfserr_inval;
2289 resp->xbuf->head[0].iov_len = (char*)p
2290 - (char*)resp->xbuf->head[0].iov_base;
2291 resp->xbuf->page_len = maxcount;
2293 /* Use rest of head for padding and remaining ops: */
2294 resp->xbuf->tail[0].iov_base = p;
2295 resp->xbuf->tail[0].iov_len = 0;
2299 resp->xbuf->tail[0].iov_base += maxcount&3;
2300 resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
2307 nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir)
2311 __be32 *page, *savep, *tailbase;
2316 if (resp->xbuf->page_len)
2317 return nfserr_resource;
2319 RESERVE_SPACE(8); /* verifier */
2322 /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
2326 resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
2329 maxcount = PAGE_SIZE;
2330 if (maxcount > readdir->rd_maxcount)
2331 maxcount = readdir->rd_maxcount;
2334 * Convert from bytes to words, account for the two words already
2335 * written, make sure to leave two words at the end for the next
2336 * pointer and eof field.
2338 maxcount = (maxcount >> 2) - 4;
2340 nfserr = nfserr_toosmall;
2344 page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
2345 readdir->common.err = 0;
2346 readdir->buflen = maxcount;
2347 readdir->buffer = page;
2348 readdir->offset = NULL;
2350 offset = readdir->rd_cookie;
2351 nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp,
2353 &readdir->common, nfsd4_encode_dirent);
2354 if (nfserr == nfs_ok &&
2355 readdir->common.err == nfserr_toosmall &&
2356 readdir->buffer == page)
2357 nfserr = nfserr_toosmall;
2358 if (nfserr == nfserr_symlink)
2359 nfserr = nfserr_notdir;
2363 if (readdir->offset)
2364 xdr_encode_hyper(readdir->offset, offset);
2366 p = readdir->buffer;
2367 *p++ = 0; /* no more entries */
2368 *p++ = htonl(readdir->common.err == nfserr_eof);
2369 resp->xbuf->page_len = ((char*)p) - (char*)page_address(
2370 resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
2372 /* Use rest of head for padding and remaining ops: */
2373 resp->xbuf->tail[0].iov_base = tailbase;
2374 resp->xbuf->tail[0].iov_len = 0;
2375 resp->p = resp->xbuf->tail[0].iov_base;
2376 resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;
2386 nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
2392 WRITECINFO(remove->rm_cinfo);
2398 nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
2404 WRITECINFO(rename->rn_sinfo);
2405 WRITECINFO(rename->rn_tinfo);
2411 nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
2412 struct nfsd4_secinfo *secinfo)
2415 struct svc_export *exp = secinfo->si_exp;
2417 struct exp_flavor_info *flavs;
2418 struct exp_flavor_info def_flavs[2];
2423 if (exp->ex_nflavors) {
2424 flavs = exp->ex_flavors;
2425 nflavs = exp->ex_nflavors;
2426 } else { /* Handling of some defaults in absence of real secinfo: */
2428 if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) {
2430 flavs[0].pseudoflavor = RPC_AUTH_UNIX;
2431 flavs[1].pseudoflavor = RPC_AUTH_NULL;
2432 } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) {
2434 flavs[0].pseudoflavor
2435 = svcauth_gss_flavor(exp->ex_client);
2438 flavs[0].pseudoflavor
2439 = exp->ex_client->flavour->flavour;
2446 for (i = 0; i < nflavs; i++) {
2447 u32 flav = flavs[i].pseudoflavor;
2448 struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav);
2452 WRITE32(RPC_AUTH_GSS);
2454 RESERVE_SPACE(4 + gm->gm_oid.len);
2455 WRITE32(gm->gm_oid.len);
2456 WRITEMEM(gm->gm_oid.data, gm->gm_oid.len);
2459 WRITE32(0); /* qop */
2462 WRITE32(gss_pseudoflavor_to_service(gm, flav));
2477 * The SETATTR encode routine is special -- it always encodes a bitmap,
2478 * regardless of the error status.
2481 nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
2493 WRITE32(setattr->sa_bmval[0]);
2494 WRITE32(setattr->sa_bmval[1]);
2500 nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
2505 RESERVE_SPACE(8 + sizeof(nfs4_verifier));
2506 WRITEMEM(&scd->se_clientid, 8);
2507 WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier));
2510 else if (nfserr == nfserr_clid_inuse) {
2519 nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
2525 WRITE32(write->wr_bytes_written);
2526 WRITE32(write->wr_how_written);
2527 WRITEMEM(write->wr_verifier.data, 8);
2533 nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
2540 statp = p++; /* to be backfilled at the end */
2543 switch (op->opnum) {
2545 nfsd4_encode_access(resp, op->status, &op->u.access);
2548 nfsd4_encode_close(resp, op->status, &op->u.close);
2551 nfsd4_encode_commit(resp, op->status, &op->u.commit);
2554 nfsd4_encode_create(resp, op->status, &op->u.create);
2556 case OP_DELEGRETURN:
2559 op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr);
2562 nfsd4_encode_getfh(resp, op->status, op->u.getfh);
2565 nfsd4_encode_link(resp, op->status, &op->u.link);
2568 nfsd4_encode_lock(resp, op->status, &op->u.lock);
2571 nfsd4_encode_lockt(resp, op->status, &op->u.lockt);
2574 nfsd4_encode_locku(resp, op->status, &op->u.locku);
2583 nfsd4_encode_open(resp, op->status, &op->u.open);
2585 case OP_OPEN_CONFIRM:
2586 nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm);
2588 case OP_OPEN_DOWNGRADE:
2589 nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade);
2596 op->status = nfsd4_encode_read(resp, op->status, &op->u.read);
2599 op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir);
2602 op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink);
2605 nfsd4_encode_remove(resp, op->status, &op->u.remove);
2608 nfsd4_encode_rename(resp, op->status, &op->u.rename);
2617 nfsd4_encode_secinfo(resp, op->status, &op->u.secinfo);
2620 nfsd4_encode_setattr(resp, op->status, &op->u.setattr);
2622 case OP_SETCLIENTID:
2623 nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid);
2625 case OP_SETCLIENTID_CONFIRM:
2630 nfsd4_encode_write(resp, op->status, &op->u.write);
2632 case OP_RELEASE_LOCKOWNER:
2639 * Note: We write the status directly, instead of using WRITE32(),
2640 * since it is already in network byte order.
2642 *statp = op->status;
2646 * Encode the reply stored in the stateowner reply cache
2648 * XDR note: do not encode rp->rp_buflen: the buffer contains the
2649 * previously sent already encoded operation.
2651 * called with nfs4_lock_state() held
2654 nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
2657 struct nfs4_replay *rp = op->replay;
2663 *p++ = rp->rp_status; /* already xdr'ed */
2666 RESERVE_SPACE(rp->rp_buflen);
2667 WRITEMEM(rp->rp_buf, rp->rp_buflen);
2672 * END OF "GENERIC" ENCODE ROUTINES.
2676 nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
2678 return xdr_ressize_check(rqstp, p);
2681 void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
2683 if (args->ops != args->iops) {
2685 args->ops = args->iops;
2689 while (args->to_free) {
2690 struct tmpbuf *tb = args->to_free;
2691 args->to_free = tb->next;
2692 tb->release(tb->buf);
2698 nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
2703 args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
2704 args->pagelist = rqstp->rq_arg.pages;
2705 args->pagelen = rqstp->rq_arg.page_len;
2707 args->to_free = NULL;
2708 args->ops = args->iops;
2709 args->rqstp = rqstp;
2711 status = nfsd4_decode_compound(args);
2713 nfsd4_release_compoundargs(args);
2719 nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp)
2722 * All that remains is to write the tag and operation count...
2726 *p++ = htonl(resp->taglen);
2727 memcpy(p, resp->tag, resp->taglen);
2728 p += XDR_QUADLEN(resp->taglen);
2729 *p++ = htonl(resp->opcnt);
2731 if (rqstp->rq_res.page_len)
2732 iov = &rqstp->rq_res.tail[0];
2734 iov = &rqstp->rq_res.head[0];
2735 iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
2736 BUG_ON(iov->iov_len > PAGE_SIZE);