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 READ32(open->op_delegate_stateid.si_generation);
683 COPYMEM(&open->op_delegate_stateid.si_opaque,
684 sizeof(stateid_opaque_t));
685 READ32(open->op_fname.len);
686 READ_BUF(open->op_fname.len);
687 SAVEMEM(open->op_fname.data, open->op_fname.len);
688 if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
699 nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf)
703 open_conf->oc_stateowner = NULL;
704 READ_BUF(4 + sizeof(stateid_t));
705 READ32(open_conf->oc_req_stateid.si_generation);
706 COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t));
707 READ32(open_conf->oc_seqid);
713 nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down)
717 open_down->od_stateowner = NULL;
718 READ_BUF(12 + sizeof(stateid_t));
719 READ32(open_down->od_stateid.si_generation);
720 COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t));
721 READ32(open_down->od_seqid);
722 READ32(open_down->od_share_access);
723 READ32(open_down->od_share_deny);
729 nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh)
734 READ32(putfh->pf_fhlen);
735 if (putfh->pf_fhlen > NFS4_FHSIZE)
737 READ_BUF(putfh->pf_fhlen);
738 SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen);
744 nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read)
748 READ_BUF(sizeof(stateid_t) + 12);
749 READ32(read->rd_stateid.si_generation);
750 COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t));
751 READ64(read->rd_offset);
752 READ32(read->rd_length);
758 nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir)
763 READ64(readdir->rd_cookie);
764 COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data));
765 READ32(readdir->rd_dircount); /* just in case you needed a useless field... */
766 READ32(readdir->rd_maxcount);
767 if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval)))
774 nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove)
779 READ32(remove->rm_namelen);
780 READ_BUF(remove->rm_namelen);
781 SAVEMEM(remove->rm_name, remove->rm_namelen);
782 if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent)))
789 nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename)
794 READ32(rename->rn_snamelen);
795 READ_BUF(rename->rn_snamelen + 4);
796 SAVEMEM(rename->rn_sname, rename->rn_snamelen);
797 READ32(rename->rn_tnamelen);
798 READ_BUF(rename->rn_tnamelen);
799 SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
800 if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent)))
802 if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval)))
809 nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)
813 READ_BUF(sizeof(clientid_t));
814 COPYMEM(clientid, sizeof(clientid_t));
820 nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
821 struct nfsd4_secinfo *secinfo)
826 READ32(secinfo->si_namelen);
827 READ_BUF(secinfo->si_namelen);
828 SAVEMEM(secinfo->si_name, secinfo->si_namelen);
829 status = check_filename(secinfo->si_name, secinfo->si_namelen,
837 nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
841 READ_BUF(sizeof(stateid_t));
842 READ32(setattr->sa_stateid.si_generation);
843 COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t));
844 if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl)))
851 nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid)
856 COPYMEM(setclientid->se_verf.data, 8);
857 READ32(setclientid->se_namelen);
859 READ_BUF(setclientid->se_namelen + 8);
860 SAVEMEM(setclientid->se_name, setclientid->se_namelen);
861 READ32(setclientid->se_callback_prog);
862 READ32(setclientid->se_callback_netid_len);
864 READ_BUF(setclientid->se_callback_netid_len + 4);
865 SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len);
866 READ32(setclientid->se_callback_addr_len);
868 READ_BUF(setclientid->se_callback_addr_len + 4);
869 SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len);
870 READ32(setclientid->se_callback_ident);
876 nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c)
880 READ_BUF(8 + sizeof(nfs4_verifier));
881 COPYMEM(&scd_c->sc_clientid, 8);
882 COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier));
887 /* Also used for NVERIFY */
889 nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify)
892 struct nfsd4_compoundargs save = {
895 .rqstp = argp->rqstp,
898 struct iattr ve_iattr; /* request */
899 struct nfs4_acl *ve_acl; /* request */
903 if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval)))
906 /* For convenience's sake, we compare raw xdr'd attributes in
907 * nfsd4_proc_verify; however we still decode here just to return
908 * correct error in case of bad xdr. */
910 status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl);
911 if (status == nfserr_inval) {
912 status = nfserrno(status);
917 READ32(verify->ve_attrlen);
918 READ_BUF(verify->ve_attrlen);
919 SAVEMEM(verify->ve_attrval, verify->ve_attrlen);
925 nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
932 READ_BUF(sizeof(stateid_opaque_t) + 20);
933 READ32(write->wr_stateid.si_generation);
934 COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t));
935 READ64(write->wr_offset);
936 READ32(write->wr_stable_how);
937 if (write->wr_stable_how > 2)
939 READ32(write->wr_buflen);
941 /* Sorry .. no magic macros for this.. *
942 * READ_BUF(write->wr_buflen);
943 * SAVEMEM(write->wr_buf, write->wr_buflen);
945 avail = (char*)argp->end - (char*)argp->p;
946 if (avail + argp->pagelen < write->wr_buflen) {
947 dprintk("NFSD: xdr error (%s:%d)\n",
951 argp->rqstp->rq_vec[0].iov_base = p;
952 argp->rqstp->rq_vec[0].iov_len = avail;
954 len = write->wr_buflen;
955 while (len > argp->rqstp->rq_vec[v].iov_len) {
956 len -= argp->rqstp->rq_vec[v].iov_len;
958 argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]);
960 if (argp->pagelen >= PAGE_SIZE) {
961 argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE;
962 argp->pagelen -= PAGE_SIZE;
964 argp->rqstp->rq_vec[v].iov_len = argp->pagelen;
965 argp->pagelen -= len;
968 argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len);
969 argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2));
970 argp->rqstp->rq_vec[v].iov_len = len;
971 write->wr_vlen = v+1;
977 nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner)
982 COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t));
983 READ32(rlockowner->rl_owner.len);
984 READ_BUF(rlockowner->rl_owner.len);
985 READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
991 nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)
997 nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
999 return nfserr_opnotsupp;
1002 typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
1004 static nfsd4_dec nfsd4_dec_ops[] = {
1005 [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
1006 [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
1007 [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
1008 [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
1009 [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
1010 [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
1011 [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
1012 [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
1013 [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
1014 [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
1015 [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
1016 [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
1017 [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
1018 [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
1019 [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1020 [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
1021 [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
1022 [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm,
1023 [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
1024 [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
1025 [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp,
1026 [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
1027 [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
1028 [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
1029 [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
1030 [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
1031 [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
1032 [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew,
1033 [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
1034 [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
1035 [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
1036 [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
1037 [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid,
1038 [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm,
1039 [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1040 [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
1041 [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner,
1044 struct nfsd4_minorversion_ops {
1045 nfsd4_dec *decoders;
1049 static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
1050 [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
1054 nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
1057 struct nfsd4_op *op;
1058 struct nfsd4_minorversion_ops *ops;
1062 * XXX: According to spec, we should check the tag
1063 * for UTF-8 compliance. I'm postponing this for
1064 * now because it seems that some clients do use
1068 READ32(argp->taglen);
1069 READ_BUF(argp->taglen + 8);
1070 SAVEMEM(argp->tag, argp->taglen);
1071 READ32(argp->minorversion);
1072 READ32(argp->opcnt);
1074 if (argp->taglen > NFSD4_MAX_TAGLEN)
1076 if (argp->opcnt > 100)
1079 if (argp->opcnt > ARRAY_SIZE(argp->iops)) {
1080 argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL);
1082 argp->ops = argp->iops;
1083 dprintk("nfsd: couldn't allocate room for COMPOUND\n");
1088 if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion))
1091 ops = &nfsd4_minorversion[argp->minorversion];
1092 for (i = 0; i < argp->opcnt; i++) {
1097 * We can't use READ_BUF() here because we need to handle
1098 * a missing opcode as an OP_WRITE + 1. So we need to check
1099 * to see if we're truly at the end of our buffer or if there
1100 * is another page we need to flip to.
1103 if (argp->p == argp->end) {
1104 if (argp->pagelen < 4) {
1105 /* There isn't an opcode still on the wire */
1106 op->opnum = OP_WRITE + 1;
1107 op->status = nfserr_bad_xdr;
1113 * False alarm. We just hit a page boundary, but there
1114 * is still data available. Move pointer across page
1115 * boundary. *snip from READ_BUF*
1117 argp->p = page_address(argp->pagelist[0]);
1119 if (argp->pagelen < PAGE_SIZE) {
1120 argp->end = p + (argp->pagelen>>2);
1123 argp->end = p + (PAGE_SIZE>>2);
1124 argp->pagelen -= PAGE_SIZE;
1127 op->opnum = ntohl(*argp->p++);
1129 if (op->opnum >= OP_ACCESS && op->opnum < ops->nops)
1130 op->status = ops->decoders[op->opnum](argp, &op->u);
1132 op->opnum = OP_ILLEGAL;
1133 op->status = nfserr_op_illegal;
1145 * END OF "GENERIC" DECODE ROUTINES.
1149 * START OF "GENERIC" ENCODE ROUTINES.
1150 * These may look a little ugly since they are imported from a "generic"
1151 * set of XDR encode/decode routines which are intended to be shared by
1152 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1154 * If the pain of reading these is too great, it should be a straightforward
1155 * task to translate them into Linux-specific versions which are more
1156 * consistent with the style used in NFSv2/v3...
1158 #define ENCODE_HEAD __be32 *p
1160 #define WRITE32(n) *p++ = htonl(n)
1161 #define WRITE64(n) do { \
1162 *p++ = htonl((u32)((n) >> 32)); \
1163 *p++ = htonl((u32)(n)); \
1165 #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
1166 *(p + XDR_QUADLEN(nbytes) -1) = 0; \
1167 memcpy(p, ptr, nbytes); \
1168 p += XDR_QUADLEN(nbytes); \
1170 #define WRITECINFO(c) do { \
1171 *p++ = htonl(c.atomic); \
1172 *p++ = htonl(c.before_ctime_sec); \
1173 *p++ = htonl(c.before_ctime_nsec); \
1174 *p++ = htonl(c.after_ctime_sec); \
1175 *p++ = htonl(c.after_ctime_nsec); \
1178 #define RESERVE_SPACE(nbytes) do { \
1180 BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
1182 #define ADJUST_ARGS() resp->p = p
1185 * Header routine to setup seqid operation replay cache
1187 #define ENCODE_SEQID_OP_HEAD \
1193 * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This
1194 * is where sequence id's are incremented, and the replay cache is filled.
1195 * Note that we increment sequence id's here, at the last moment, so we're sure
1196 * we know whether the error to be returned is a sequence id mutating error.
1199 #define ENCODE_SEQID_OP_TAIL(stateowner) do { \
1200 if (seqid_mutating_err(nfserr) && stateowner) { \
1201 stateowner->so_seqid++; \
1202 stateowner->so_replay.rp_status = nfserr; \
1203 stateowner->so_replay.rp_buflen = \
1204 (((char *)(resp)->p - (char *)save)); \
1205 memcpy(stateowner->so_replay.rp_buf, save, \
1206 stateowner->so_replay.rp_buflen); \
1209 /* Encode as an array of strings the string given with components
1212 static __be32 nfsd4_encode_components(char sep, char *components,
1213 __be32 **pp, int *buflen)
1217 int strlen, count=0;
1220 dprintk("nfsd4_encode_components(%s)\n", components);
1221 if ((*buflen -= 4) < 0)
1222 return nfserr_resource;
1223 WRITE32(0); /* We will fill this in with @count later */
1224 end = str = components;
1226 for (; *end && (*end != sep); end++)
1227 ; /* Point to end of component */
1230 if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0)
1231 return nfserr_resource;
1233 WRITEMEM(str, strlen);
1247 * encode a location element of a fs_locations structure
1249 static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location,
1250 __be32 **pp, int *buflen)
1255 status = nfsd4_encode_components(':', location->hosts, &p, buflen);
1258 status = nfsd4_encode_components('/', location->path, &p, buflen);
1266 * Return the path to an export point in the pseudo filesystem namespace
1267 * Returned string is safe to use as long as the caller holds a reference
1270 static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat)
1272 struct svc_fh tmp_fh;
1273 char *path, *rootpath;
1275 fh_init(&tmp_fh, NFS4_FHSIZE);
1276 *stat = exp_pseudoroot(rqstp, &tmp_fh);
1279 rootpath = tmp_fh.fh_export->ex_pathname;
1281 path = exp->ex_pathname;
1283 if (strncmp(path, rootpath, strlen(rootpath))) {
1284 dprintk("nfsd: fs_locations failed;"
1285 "%s is not contained in %s\n", path, rootpath);
1286 *stat = nfserr_notsupp;
1290 return path + strlen(rootpath);
1294 * encode a fs_locations structure
1296 static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
1297 struct svc_export *exp,
1298 __be32 **pp, int *buflen)
1303 struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
1304 char *root = nfsd4_path(rqstp, exp, &status);
1308 status = nfsd4_encode_components('/', root, &p, buflen);
1311 if ((*buflen -= 4) < 0)
1312 return nfserr_resource;
1313 WRITE32(fslocs->locations_count);
1314 for (i=0; i<fslocs->locations_count; i++) {
1315 status = nfsd4_encode_fs_location4(&fslocs->locations[i],
1324 static u32 nfs4_ftypes[16] = {
1325 NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
1326 NF4DIR, NF4BAD, NF4BLK, NF4BAD,
1327 NF4REG, NF4BAD, NF4LNK, NF4BAD,
1328 NF4SOCK, NF4BAD, NF4LNK, NF4BAD,
1332 nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
1333 __be32 **p, int *buflen)
1337 if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4)
1338 return nfserr_resource;
1339 if (whotype != NFS4_ACL_WHO_NAMED)
1340 status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1));
1342 status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1));
1344 status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1));
1346 return nfserrno(status);
1347 *p = xdr_encode_opaque(*p, NULL, status);
1348 *buflen -= (XDR_QUADLEN(status) << 2) + 4;
1349 BUG_ON(*buflen < 0);
1353 static inline __be32
1354 nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen)
1356 return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen);
1359 static inline __be32
1360 nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen)
1362 return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen);
1365 static inline __be32
1366 nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
1367 __be32 **p, int *buflen)
1369 return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen);
1372 #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
1373 FATTR4_WORD0_RDATTR_ERROR)
1374 #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
1376 static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
1378 /* As per referral draft: */
1379 if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS ||
1380 *bmval1 & ~WORD1_ABSENT_FS_ATTRS) {
1381 if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR ||
1382 *bmval0 & FATTR4_WORD0_FS_LOCATIONS)
1383 *rdattr_err = NFSERR_MOVED;
1385 return nfserr_moved;
1387 *bmval0 &= WORD0_ABSENT_FS_ATTRS;
1388 *bmval1 &= WORD1_ABSENT_FS_ATTRS;
1393 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
1396 * @countp is the buffer size in _words_; upon successful return this becomes
1397 * replaced with the number of words written.
1400 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1401 struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval,
1402 struct svc_rqst *rqstp, int ignore_crossmnt)
1404 u32 bmval0 = bmval[0];
1405 u32 bmval1 = bmval[1];
1407 struct svc_fh tempfh;
1408 struct kstatfs statfs;
1409 int buflen = *countp << 2;
1418 struct nfs4_acl *acl = NULL;
1420 BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
1421 BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0);
1422 BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1);
1424 if (exp->ex_fslocs.migrated) {
1425 status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
1430 err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
1433 if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
1434 FATTR4_WORD0_MAXNAME)) ||
1435 (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
1436 FATTR4_WORD1_SPACE_TOTAL))) {
1437 err = vfs_statfs(dentry, &statfs);
1441 if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) {
1442 fh_init(&tempfh, NFS4_FHSIZE);
1443 status = fh_compose(&tempfh, exp, dentry, NULL);
1448 if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT
1449 | FATTR4_WORD0_SUPPORTED_ATTRS)) {
1450 err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
1451 aclsupport = (err == 0);
1452 if (bmval0 & FATTR4_WORD0_ACL) {
1453 if (err == -EOPNOTSUPP)
1454 bmval0 &= ~FATTR4_WORD0_ACL;
1455 else if (err == -EINVAL) {
1456 status = nfserr_attrnotsupp;
1458 } else if (err != 0)
1462 if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
1463 if (exp->ex_fslocs.locations == NULL) {
1464 bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS;
1467 if ((buflen -= 16) < 0)
1473 attrlenp = p++; /* to be backfilled later */
1475 if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
1476 u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0;
1477 if ((buflen -= 12) < 0)
1480 word0 &= ~FATTR4_WORD0_ACL;
1481 if (!exp->ex_fslocs.locations)
1482 word0 &= ~FATTR4_WORD0_FS_LOCATIONS;
1485 WRITE32(NFSD_SUPPORTED_ATTRS_WORD1);
1487 if (bmval0 & FATTR4_WORD0_TYPE) {
1488 if ((buflen -= 4) < 0)
1490 dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12];
1491 if (dummy == NF4BAD)
1492 goto out_serverfault;
1495 if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) {
1496 if ((buflen -= 4) < 0)
1498 if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)
1499 WRITE32(NFS4_FH_PERSISTENT);
1501 WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
1503 if (bmval0 & FATTR4_WORD0_CHANGE) {
1505 * Note: This _must_ be consistent with the scheme for writing
1506 * change_info, so any changes made here must be reflected there
1507 * as well. (See xdr4.h:set_change_info() and the WRITECINFO()
1510 if ((buflen -= 8) < 0)
1512 WRITE32(stat.ctime.tv_sec);
1513 WRITE32(stat.ctime.tv_nsec);
1515 if (bmval0 & FATTR4_WORD0_SIZE) {
1516 if ((buflen -= 8) < 0)
1520 if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) {
1521 if ((buflen -= 4) < 0)
1525 if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) {
1526 if ((buflen -= 4) < 0)
1530 if (bmval0 & FATTR4_WORD0_NAMED_ATTR) {
1531 if ((buflen -= 4) < 0)
1535 if (bmval0 & FATTR4_WORD0_FSID) {
1536 if ((buflen -= 16) < 0)
1538 if (exp->ex_fslocs.migrated) {
1539 WRITE64(NFS4_REFERRAL_FSID_MAJOR);
1540 WRITE64(NFS4_REFERRAL_FSID_MINOR);
1541 } else switch(fsid_source(fhp)) {
1542 case FSIDSOURCE_FSID:
1543 WRITE64((u64)exp->ex_fsid);
1546 case FSIDSOURCE_DEV:
1548 WRITE32(MAJOR(stat.dev));
1550 WRITE32(MINOR(stat.dev));
1552 case FSIDSOURCE_UUID:
1553 WRITEMEM(exp->ex_uuid, 16);
1557 if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) {
1558 if ((buflen -= 4) < 0)
1562 if (bmval0 & FATTR4_WORD0_LEASE_TIME) {
1563 if ((buflen -= 4) < 0)
1565 WRITE32(NFSD_LEASE_TIME);
1567 if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) {
1568 if ((buflen -= 4) < 0)
1570 WRITE32(rdattr_err);
1572 if (bmval0 & FATTR4_WORD0_ACL) {
1573 struct nfs4_ace *ace;
1576 if ((buflen -= 4) < 0)
1582 if ((buflen -= 4) < 0)
1584 WRITE32(acl->naces);
1586 for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) {
1587 if ((buflen -= 4*3) < 0)
1591 WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL);
1592 status = nfsd4_encode_aclname(rqstp, ace->whotype,
1593 ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP,
1595 if (status == nfserr_resource)
1602 if (bmval0 & FATTR4_WORD0_ACLSUPPORT) {
1603 if ((buflen -= 4) < 0)
1605 WRITE32(aclsupport ?
1606 ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0);
1608 if (bmval0 & FATTR4_WORD0_CANSETTIME) {
1609 if ((buflen -= 4) < 0)
1613 if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) {
1614 if ((buflen -= 4) < 0)
1618 if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) {
1619 if ((buflen -= 4) < 0)
1623 if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) {
1624 if ((buflen -= 4) < 0)
1628 if (bmval0 & FATTR4_WORD0_FILEHANDLE) {
1629 buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4;
1632 WRITE32(fhp->fh_handle.fh_size);
1633 WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size);
1635 if (bmval0 & FATTR4_WORD0_FILEID) {
1636 if ((buflen -= 8) < 0)
1640 if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
1641 if ((buflen -= 8) < 0)
1643 WRITE64((u64) statfs.f_ffree);
1645 if (bmval0 & FATTR4_WORD0_FILES_FREE) {
1646 if ((buflen -= 8) < 0)
1648 WRITE64((u64) statfs.f_ffree);
1650 if (bmval0 & FATTR4_WORD0_FILES_TOTAL) {
1651 if ((buflen -= 8) < 0)
1653 WRITE64((u64) statfs.f_files);
1655 if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
1656 status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen);
1657 if (status == nfserr_resource)
1662 if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) {
1663 if ((buflen -= 4) < 0)
1667 if (bmval0 & FATTR4_WORD0_MAXFILESIZE) {
1668 if ((buflen -= 8) < 0)
1672 if (bmval0 & FATTR4_WORD0_MAXLINK) {
1673 if ((buflen -= 4) < 0)
1677 if (bmval0 & FATTR4_WORD0_MAXNAME) {
1678 if ((buflen -= 4) < 0)
1680 WRITE32(statfs.f_namelen);
1682 if (bmval0 & FATTR4_WORD0_MAXREAD) {
1683 if ((buflen -= 8) < 0)
1685 WRITE64((u64) svc_max_payload(rqstp));
1687 if (bmval0 & FATTR4_WORD0_MAXWRITE) {
1688 if ((buflen -= 8) < 0)
1690 WRITE64((u64) svc_max_payload(rqstp));
1692 if (bmval1 & FATTR4_WORD1_MODE) {
1693 if ((buflen -= 4) < 0)
1695 WRITE32(stat.mode & S_IALLUGO);
1697 if (bmval1 & FATTR4_WORD1_NO_TRUNC) {
1698 if ((buflen -= 4) < 0)
1702 if (bmval1 & FATTR4_WORD1_NUMLINKS) {
1703 if ((buflen -= 4) < 0)
1705 WRITE32(stat.nlink);
1707 if (bmval1 & FATTR4_WORD1_OWNER) {
1708 status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen);
1709 if (status == nfserr_resource)
1714 if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
1715 status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen);
1716 if (status == nfserr_resource)
1721 if (bmval1 & FATTR4_WORD1_RAWDEV) {
1722 if ((buflen -= 8) < 0)
1724 WRITE32((u32) MAJOR(stat.rdev));
1725 WRITE32((u32) MINOR(stat.rdev));
1727 if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) {
1728 if ((buflen -= 8) < 0)
1730 dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize;
1733 if (bmval1 & FATTR4_WORD1_SPACE_FREE) {
1734 if ((buflen -= 8) < 0)
1736 dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize;
1739 if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) {
1740 if ((buflen -= 8) < 0)
1742 dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize;
1745 if (bmval1 & FATTR4_WORD1_SPACE_USED) {
1746 if ((buflen -= 8) < 0)
1748 dummy64 = (u64)stat.blocks << 9;
1751 if (bmval1 & FATTR4_WORD1_TIME_ACCESS) {
1752 if ((buflen -= 12) < 0)
1755 WRITE32(stat.atime.tv_sec);
1756 WRITE32(stat.atime.tv_nsec);
1758 if (bmval1 & FATTR4_WORD1_TIME_DELTA) {
1759 if ((buflen -= 12) < 0)
1765 if (bmval1 & FATTR4_WORD1_TIME_METADATA) {
1766 if ((buflen -= 12) < 0)
1769 WRITE32(stat.ctime.tv_sec);
1770 WRITE32(stat.ctime.tv_nsec);
1772 if (bmval1 & FATTR4_WORD1_TIME_MODIFY) {
1773 if ((buflen -= 12) < 0)
1776 WRITE32(stat.mtime.tv_sec);
1777 WRITE32(stat.mtime.tv_nsec);
1779 if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
1780 if ((buflen -= 8) < 0)
1783 * Get parent's attributes if not ignoring crossmount
1784 * and this is the root of a cross-mounted filesystem.
1786 if (ignore_crossmnt == 0 &&
1787 exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
1788 err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
1789 exp->ex_path.mnt->mnt_mountpoint, &stat);
1795 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
1796 *countp = p - buffer;
1805 status = nfserrno(err);
1809 status = nfserr_resource;
1812 status = nfserr_serverfault;
1816 static inline int attributes_need_mount(u32 *bmval)
1818 if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
1820 if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID)
1826 nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
1827 const char *name, int namlen, __be32 *p, int *buflen)
1829 struct svc_export *exp = cd->rd_fhp->fh_export;
1830 struct dentry *dentry;
1832 int ignore_crossmnt = 0;
1834 dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
1836 return nfserrno(PTR_ERR(dentry));
1840 * In the case of a mountpoint, the client may be asking for
1841 * attributes that are only properties of the underlying filesystem
1842 * as opposed to the cross-mounted file system. In such a case,
1843 * we will not follow the cross mount and will fill the attribtutes
1844 * directly from the mountpoint dentry.
1846 if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval))
1847 ignore_crossmnt = 1;
1848 else if (d_mountpoint(dentry)) {
1852 * Why the heck aren't we just using nfsd_lookup??
1853 * Different "."/".." handling? Something else?
1854 * At least, add a comment here to explain....
1856 err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp);
1858 nfserr = nfserrno(err);
1861 nfserr = check_nfsd_access(exp, cd->rd_rqstp);
1866 nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
1867 cd->rd_rqstp, ignore_crossmnt);
1875 nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr)
1882 *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */
1883 *p++ = htonl(0); /* bmval1 */
1886 *p++ = nfserr; /* no htonl */
1887 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
1892 nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
1893 loff_t offset, u64 ino, unsigned int d_type)
1895 struct readdir_cd *ccd = ccdv;
1896 struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
1898 __be32 *p = cd->buffer;
1899 __be32 nfserr = nfserr_toosmall;
1901 /* In nfsv4, "." and ".." never make it onto the wire.. */
1902 if (name && isdotent(name, namlen)) {
1903 cd->common.err = nfs_ok;
1908 xdr_encode_hyper(cd->offset, (u64) offset);
1910 buflen = cd->buflen - 4 - XDR_QUADLEN(namlen);
1914 *p++ = xdr_one; /* mark entry present */
1915 cd->offset = p; /* remember pointer */
1916 p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
1917 p = xdr_encode_array(p, name, namlen); /* name length & name */
1919 nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen);
1924 case nfserr_resource:
1925 nfserr = nfserr_toosmall;
1931 * If the client requested the RDATTR_ERROR attribute,
1932 * we stuff the error code into this attribute
1933 * and continue. If this attribute was not requested,
1934 * then in accordance with the spec, we fail the
1935 * entire READDIR operation(!)
1937 if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR))
1939 p = nfsd4_encode_rdattr_error(p, buflen, nfserr);
1941 nfserr = nfserr_toosmall;
1945 cd->buflen -= (p - cd->buffer);
1947 cd->common.err = nfs_ok;
1950 cd->common.err = nfserr;
1955 nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
1959 RESERVE_SPACE(sizeof(stateid_t));
1960 WRITE32(sid->si_generation);
1961 WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
1966 nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
1972 WRITE32(access->ac_supported);
1973 WRITE32(access->ac_resp_access);
1980 nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
1982 ENCODE_SEQID_OP_HEAD;
1985 nfsd4_encode_stateid(resp, &close->cl_stateid);
1987 ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
1993 nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
1999 WRITEMEM(commit->co_verf.data, 8);
2006 nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
2012 WRITECINFO(create->cr_cinfo);
2014 WRITE32(create->cr_bmval[0]);
2015 WRITE32(create->cr_bmval[1]);
2022 nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr)
2024 struct svc_fh *fhp = getattr->ga_fhp;
2030 buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
2031 nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
2032 resp->p, &buflen, getattr->ga_bmval,
2040 nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp)
2042 struct svc_fh *fhp = *fhpp;
2047 len = fhp->fh_handle.fh_size;
2048 RESERVE_SPACE(len + 4);
2050 WRITEMEM(&fhp->fh_handle.fh_base, len);
2057 * Including all fields other than the name, a LOCK4denied structure requires
2058 * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
2061 nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
2065 RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
2066 WRITE64(ld->ld_start);
2067 WRITE64(ld->ld_length);
2068 WRITE32(ld->ld_type);
2070 WRITEMEM(&ld->ld_clientid, 8);
2071 WRITE32(ld->ld_sop->so_owner.len);
2072 WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len);
2073 kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner);
2074 } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
2075 WRITE64((u64)0); /* clientid */
2076 WRITE32(0); /* length of owner name */
2082 nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
2084 ENCODE_SEQID_OP_HEAD;
2087 nfsd4_encode_stateid(resp, &lock->lk_resp_stateid);
2088 else if (nfserr == nfserr_denied)
2089 nfsd4_encode_lock_denied(resp, &lock->lk_denied);
2091 ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
2096 nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
2098 if (nfserr == nfserr_denied)
2099 nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
2104 nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
2106 ENCODE_SEQID_OP_HEAD;
2109 nfsd4_encode_stateid(resp, &locku->lu_stateid);
2111 ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
2117 nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
2123 WRITECINFO(link->li_cinfo);
2131 nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
2134 ENCODE_SEQID_OP_HEAD;
2139 nfsd4_encode_stateid(resp, &open->op_stateid);
2141 WRITECINFO(open->op_cinfo);
2142 WRITE32(open->op_rflags);
2144 WRITE32(open->op_bmval[0]);
2145 WRITE32(open->op_bmval[1]);
2146 WRITE32(open->op_delegate_type);
2149 switch (open->op_delegate_type) {
2150 case NFS4_OPEN_DELEGATE_NONE:
2152 case NFS4_OPEN_DELEGATE_READ:
2153 nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
2155 WRITE32(open->op_recall);
2158 * TODO: ACE's in delegations
2160 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
2163 WRITE32(0); /* XXX: is NULL principal ok? */
2166 case NFS4_OPEN_DELEGATE_WRITE:
2167 nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
2172 * TODO: space_limit's in delegations
2174 WRITE32(NFS4_LIMIT_SIZE);
2179 * TODO: ACE's in delegations
2181 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
2184 WRITE32(0); /* XXX: is NULL principal ok? */
2190 /* XXX save filehandle here */
2192 ENCODE_SEQID_OP_TAIL(open->op_stateowner);
2197 nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
2199 ENCODE_SEQID_OP_HEAD;
2202 nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
2204 ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
2209 nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
2211 ENCODE_SEQID_OP_HEAD;
2214 nfsd4_encode_stateid(resp, &od->od_stateid);
2216 ENCODE_SEQID_OP_TAIL(od->od_stateowner);
2221 nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
2222 struct nfsd4_read *read)
2226 unsigned long maxcount;
2232 if (resp->xbuf->page_len)
2233 return nfserr_resource;
2235 RESERVE_SPACE(8); /* eof flag and byte count */
2237 maxcount = svc_max_payload(resp->rqstp);
2238 if (maxcount > read->rd_length)
2239 maxcount = read->rd_length;
2244 pn = resp->rqstp->rq_resused++;
2245 resp->rqstp->rq_vec[v].iov_base =
2246 page_address(resp->rqstp->rq_respages[pn]);
2247 resp->rqstp->rq_vec[v].iov_len =
2248 len < PAGE_SIZE ? len : PAGE_SIZE;
2254 nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp,
2255 read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
2258 if (nfserr == nfserr_symlink)
2259 nfserr = nfserr_inval;
2262 eof = (read->rd_offset + maxcount >=
2263 read->rd_fhp->fh_dentry->d_inode->i_size);
2268 resp->xbuf->head[0].iov_len = (char*)p
2269 - (char*)resp->xbuf->head[0].iov_base;
2270 resp->xbuf->page_len = maxcount;
2272 /* Use rest of head for padding and remaining ops: */
2273 resp->xbuf->tail[0].iov_base = p;
2274 resp->xbuf->tail[0].iov_len = 0;
2278 resp->xbuf->tail[0].iov_base += maxcount&3;
2279 resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
2286 nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink)
2294 if (resp->xbuf->page_len)
2295 return nfserr_resource;
2297 page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
2299 maxcount = PAGE_SIZE;
2303 * XXX: By default, the ->readlink() VFS op will truncate symlinks
2304 * if they would overflow the buffer. Is this kosher in NFSv4? If
2305 * not, one easy fix is: if ->readlink() precisely fills the buffer,
2306 * assume that truncation occurred, and return NFS4ERR_RESOURCE.
2308 nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount);
2309 if (nfserr == nfserr_isdir)
2310 return nfserr_inval;
2316 resp->xbuf->head[0].iov_len = (char*)p
2317 - (char*)resp->xbuf->head[0].iov_base;
2318 resp->xbuf->page_len = maxcount;
2320 /* Use rest of head for padding and remaining ops: */
2321 resp->xbuf->tail[0].iov_base = p;
2322 resp->xbuf->tail[0].iov_len = 0;
2326 resp->xbuf->tail[0].iov_base += maxcount&3;
2327 resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
2334 nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir)
2338 __be32 *page, *savep, *tailbase;
2343 if (resp->xbuf->page_len)
2344 return nfserr_resource;
2346 RESERVE_SPACE(8); /* verifier */
2349 /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
2353 resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
2356 maxcount = PAGE_SIZE;
2357 if (maxcount > readdir->rd_maxcount)
2358 maxcount = readdir->rd_maxcount;
2361 * Convert from bytes to words, account for the two words already
2362 * written, make sure to leave two words at the end for the next
2363 * pointer and eof field.
2365 maxcount = (maxcount >> 2) - 4;
2367 nfserr = nfserr_toosmall;
2371 page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
2372 readdir->common.err = 0;
2373 readdir->buflen = maxcount;
2374 readdir->buffer = page;
2375 readdir->offset = NULL;
2377 offset = readdir->rd_cookie;
2378 nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp,
2380 &readdir->common, nfsd4_encode_dirent);
2381 if (nfserr == nfs_ok &&
2382 readdir->common.err == nfserr_toosmall &&
2383 readdir->buffer == page)
2384 nfserr = nfserr_toosmall;
2385 if (nfserr == nfserr_symlink)
2386 nfserr = nfserr_notdir;
2390 if (readdir->offset)
2391 xdr_encode_hyper(readdir->offset, offset);
2393 p = readdir->buffer;
2394 *p++ = 0; /* no more entries */
2395 *p++ = htonl(readdir->common.err == nfserr_eof);
2396 resp->xbuf->page_len = ((char*)p) - (char*)page_address(
2397 resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
2399 /* Use rest of head for padding and remaining ops: */
2400 resp->xbuf->tail[0].iov_base = tailbase;
2401 resp->xbuf->tail[0].iov_len = 0;
2402 resp->p = resp->xbuf->tail[0].iov_base;
2403 resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;
2413 nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
2419 WRITECINFO(remove->rm_cinfo);
2426 nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
2432 WRITECINFO(rename->rn_sinfo);
2433 WRITECINFO(rename->rn_tinfo);
2440 nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
2441 struct nfsd4_secinfo *secinfo)
2444 struct svc_export *exp = secinfo->si_exp;
2446 struct exp_flavor_info *flavs;
2447 struct exp_flavor_info def_flavs[2];
2452 if (exp->ex_nflavors) {
2453 flavs = exp->ex_flavors;
2454 nflavs = exp->ex_nflavors;
2455 } else { /* Handling of some defaults in absence of real secinfo: */
2457 if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) {
2459 flavs[0].pseudoflavor = RPC_AUTH_UNIX;
2460 flavs[1].pseudoflavor = RPC_AUTH_NULL;
2461 } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) {
2463 flavs[0].pseudoflavor
2464 = svcauth_gss_flavor(exp->ex_client);
2467 flavs[0].pseudoflavor
2468 = exp->ex_client->flavour->flavour;
2475 for (i = 0; i < nflavs; i++) {
2476 u32 flav = flavs[i].pseudoflavor;
2477 struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav);
2481 WRITE32(RPC_AUTH_GSS);
2483 RESERVE_SPACE(4 + gm->gm_oid.len);
2484 WRITE32(gm->gm_oid.len);
2485 WRITEMEM(gm->gm_oid.data, gm->gm_oid.len);
2488 WRITE32(0); /* qop */
2491 WRITE32(gss_pseudoflavor_to_service(gm, flav));
2507 * The SETATTR encode routine is special -- it always encodes a bitmap,
2508 * regardless of the error status.
2511 nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
2523 WRITE32(setattr->sa_bmval[0]);
2524 WRITE32(setattr->sa_bmval[1]);
2531 nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
2536 RESERVE_SPACE(8 + sizeof(nfs4_verifier));
2537 WRITEMEM(&scd->se_clientid, 8);
2538 WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier));
2541 else if (nfserr == nfserr_clid_inuse) {
2551 nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
2557 WRITE32(write->wr_bytes_written);
2558 WRITE32(write->wr_how_written);
2559 WRITEMEM(write->wr_verifier.data, 8);
2566 nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
2571 typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
2573 static nfsd4_enc nfsd4_enc_ops[] = {
2574 [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
2575 [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
2576 [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit,
2577 [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create,
2578 [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop,
2579 [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop,
2580 [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr,
2581 [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh,
2582 [OP_LINK] = (nfsd4_enc)nfsd4_encode_link,
2583 [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock,
2584 [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt,
2585 [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku,
2586 [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop,
2587 [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop,
2588 [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop,
2589 [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open,
2590 [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm,
2591 [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade,
2592 [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop,
2593 [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop,
2594 [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop,
2595 [OP_READ] = (nfsd4_enc)nfsd4_encode_read,
2596 [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir,
2597 [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink,
2598 [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove,
2599 [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename,
2600 [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop,
2601 [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop,
2602 [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop,
2603 [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo,
2604 [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr,
2605 [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid,
2606 [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop,
2607 [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop,
2608 [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write,
2609 [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop,
2613 nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
2620 statp = p++; /* to be backfilled at the end */
2623 if (op->opnum == OP_ILLEGAL)
2625 BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
2626 !nfsd4_enc_ops[op->opnum]);
2627 op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
2630 * Note: We write the status directly, instead of using WRITE32(),
2631 * since it is already in network byte order.
2633 *statp = op->status;
2637 * Encode the reply stored in the stateowner reply cache
2639 * XDR note: do not encode rp->rp_buflen: the buffer contains the
2640 * previously sent already encoded operation.
2642 * called with nfs4_lock_state() held
2645 nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
2648 struct nfs4_replay *rp = op->replay;
2654 *p++ = rp->rp_status; /* already xdr'ed */
2657 RESERVE_SPACE(rp->rp_buflen);
2658 WRITEMEM(rp->rp_buf, rp->rp_buflen);
2663 * END OF "GENERIC" ENCODE ROUTINES.
2667 nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
2669 return xdr_ressize_check(rqstp, p);
2672 void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
2674 if (args->ops != args->iops) {
2676 args->ops = args->iops;
2680 while (args->to_free) {
2681 struct tmpbuf *tb = args->to_free;
2682 args->to_free = tb->next;
2683 tb->release(tb->buf);
2689 nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
2694 args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
2695 args->pagelist = rqstp->rq_arg.pages;
2696 args->pagelen = rqstp->rq_arg.page_len;
2698 args->to_free = NULL;
2699 args->ops = args->iops;
2700 args->rqstp = rqstp;
2702 status = nfsd4_decode_compound(args);
2704 nfsd4_release_compoundargs(args);
2710 nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp)
2713 * All that remains is to write the tag and operation count...
2717 *p++ = htonl(resp->taglen);
2718 memcpy(p, resp->tag, resp->taglen);
2719 p += XDR_QUADLEN(resp->taglen);
2720 *p++ = htonl(resp->opcnt);
2722 if (rqstp->rq_res.page_len)
2723 iov = &rqstp->rq_res.tail[0];
2725 iov = &rqstp->rq_res.head[0];
2726 iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
2727 BUG_ON(iov->iov_len > PAGE_SIZE);