17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
2161961e0fSrobinson */
2261961e0fSrobinson
2361961e0fSrobinson /*
24*e8031f0aSraf * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
257c478bd9Sstevel@tonic-gate * Use is subject to license terms.
267c478bd9Sstevel@tonic-gate */
27*e8031f0aSraf
287c478bd9Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
297c478bd9Sstevel@tonic-gate /* All Rights Reserved */
307c478bd9Sstevel@tonic-gate /*
317c478bd9Sstevel@tonic-gate * Portions of this source code were derived from Berkeley
327c478bd9Sstevel@tonic-gate * 4.3 BSD under license from the Regents of the University of
337c478bd9Sstevel@tonic-gate * California.
347c478bd9Sstevel@tonic-gate */
357c478bd9Sstevel@tonic-gate
367c478bd9Sstevel@tonic-gate /*
377c478bd9Sstevel@tonic-gate * Protocol for the local binder service, or pmap.
387c478bd9Sstevel@tonic-gate * All the pmap xdr routines here.
397c478bd9Sstevel@tonic-gate */
407c478bd9Sstevel@tonic-gate
41*e8031f0aSraf #include "mt.h"
427c478bd9Sstevel@tonic-gate #include <rpc/types.h>
437c478bd9Sstevel@tonic-gate #include <rpc/xdr.h>
447c478bd9Sstevel@tonic-gate #include <rpc/pmap_prot.h>
457c478bd9Sstevel@tonic-gate #include <rpc/pmap_rmt.h>
467c478bd9Sstevel@tonic-gate
477c478bd9Sstevel@tonic-gate bool_t
xdr_pmap(XDR * xdrs,struct pmap * objp)4861961e0fSrobinson xdr_pmap(XDR *xdrs, struct pmap *objp)
497c478bd9Sstevel@tonic-gate {
5061961e0fSrobinson rpc_inline_t *buf;
517c478bd9Sstevel@tonic-gate
5261961e0fSrobinson switch (xdrs->x_op) {
5361961e0fSrobinson case XDR_ENCODE:
547c478bd9Sstevel@tonic-gate buf = XDR_INLINE(xdrs, 4 * BYTES_PER_XDR_UNIT);
557c478bd9Sstevel@tonic-gate if (buf == NULL) {
5661961e0fSrobinson if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->pm_prog))
577c478bd9Sstevel@tonic-gate return (FALSE);
5861961e0fSrobinson if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->pm_vers))
597c478bd9Sstevel@tonic-gate return (FALSE);
6061961e0fSrobinson if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->pm_prot))
617c478bd9Sstevel@tonic-gate return (FALSE);
6261961e0fSrobinson if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->pm_port))
637c478bd9Sstevel@tonic-gate return (FALSE);
647c478bd9Sstevel@tonic-gate } else {
657c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, objp->pm_prog);
667c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, objp->pm_vers);
677c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, objp->pm_prot);
687c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, objp->pm_port);
697c478bd9Sstevel@tonic-gate }
707c478bd9Sstevel@tonic-gate return (TRUE);
7161961e0fSrobinson case XDR_DECODE:
727c478bd9Sstevel@tonic-gate buf = XDR_INLINE(xdrs, 4 * BYTES_PER_XDR_UNIT);
737c478bd9Sstevel@tonic-gate if (buf == NULL) {
7461961e0fSrobinson if (!XDR_GETINT32(xdrs, (int32_t *)&objp->pm_prog))
757c478bd9Sstevel@tonic-gate return (FALSE);
7661961e0fSrobinson if (!XDR_GETINT32(xdrs, (int32_t *)&objp->pm_vers))
777c478bd9Sstevel@tonic-gate return (FALSE);
7861961e0fSrobinson if (!XDR_GETINT32(xdrs, (int32_t *)&objp->pm_prot))
797c478bd9Sstevel@tonic-gate return (FALSE);
8061961e0fSrobinson if (!XDR_GETINT32(xdrs, (int32_t *)&objp->pm_port))
817c478bd9Sstevel@tonic-gate return (FALSE);
827c478bd9Sstevel@tonic-gate } else {
837c478bd9Sstevel@tonic-gate objp->pm_prog = IXDR_GET_U_INT32(buf);
847c478bd9Sstevel@tonic-gate objp->pm_vers = IXDR_GET_U_INT32(buf);
857c478bd9Sstevel@tonic-gate objp->pm_prot = IXDR_GET_U_INT32(buf);
867c478bd9Sstevel@tonic-gate objp->pm_port = IXDR_GET_U_INT32(buf);
877c478bd9Sstevel@tonic-gate }
8861961e0fSrobinson return (TRUE);
8961961e0fSrobinson case XDR_FREE:
907c478bd9Sstevel@tonic-gate return (TRUE);
917c478bd9Sstevel@tonic-gate }
927c478bd9Sstevel@tonic-gate return (FALSE);
937c478bd9Sstevel@tonic-gate }
947c478bd9Sstevel@tonic-gate
957c478bd9Sstevel@tonic-gate /*
967c478bd9Sstevel@tonic-gate * pmaplist_ptr implements a linked list. The RPCL definition from
977c478bd9Sstevel@tonic-gate * pmap_prot.x is:
987c478bd9Sstevel@tonic-gate *
997c478bd9Sstevel@tonic-gate * struct pm__list {
1007c478bd9Sstevel@tonic-gate * pmap pml_map;
1017c478bd9Sstevel@tonic-gate * struct pm__list *pml_next;
1027c478bd9Sstevel@tonic-gate * };
1037c478bd9Sstevel@tonic-gate * typedef pm__list *pmaplist_ptr;
1047c478bd9Sstevel@tonic-gate *
1057c478bd9Sstevel@tonic-gate * Recall that "pointers" in XDR are encoded as a boolean, indicating whether
1067c478bd9Sstevel@tonic-gate * there's any data behind the pointer, followed by the data (if any exists).
1077c478bd9Sstevel@tonic-gate * The boolean can be interpreted as ``more data follows me''; if FALSE then
1087c478bd9Sstevel@tonic-gate * nothing follows the boolean; if TRUE then the boolean is followed by an
1097c478bd9Sstevel@tonic-gate * actual struct pmap, and another pmaplist_ptr (declared in RPCL as "struct
1107c478bd9Sstevel@tonic-gate * pmaplist *").
1117c478bd9Sstevel@tonic-gate *
1127c478bd9Sstevel@tonic-gate * This could be implemented via the xdr_pointer type, though this would
1137c478bd9Sstevel@tonic-gate * result in one recursive call per element in the list. Rather than do that
1147c478bd9Sstevel@tonic-gate * we can ``unwind'' the recursion into a while loop and use xdr_reference to
1157c478bd9Sstevel@tonic-gate * serialize the pmap elements.
1167c478bd9Sstevel@tonic-gate */
1177c478bd9Sstevel@tonic-gate bool_t
xdr_pmaplist_ptr(XDR * xdrs,pmaplist_ptr * rp)11861961e0fSrobinson xdr_pmaplist_ptr(XDR *xdrs, pmaplist_ptr *rp)
1197c478bd9Sstevel@tonic-gate {
1207c478bd9Sstevel@tonic-gate /*
1217c478bd9Sstevel@tonic-gate * more_elements is pre-computed in case the direction is
1227c478bd9Sstevel@tonic-gate * XDR_ENCODE or XDR_FREE. more_elements is overwritten by
1237c478bd9Sstevel@tonic-gate * xdr_bool when the direction is XDR_DECODE.
1247c478bd9Sstevel@tonic-gate */
1257c478bd9Sstevel@tonic-gate bool_t more_elements;
12661961e0fSrobinson int freeing = (xdrs->x_op == XDR_FREE);
1277c478bd9Sstevel@tonic-gate pmaplist_ptr next;
1287c478bd9Sstevel@tonic-gate pmaplist_ptr next_copy;
1297c478bd9Sstevel@tonic-gate
13061961e0fSrobinson for (;;) {
1317c478bd9Sstevel@tonic-gate more_elements = (bool_t)(*rp != NULL);
13261961e0fSrobinson if (!xdr_bool(xdrs, &more_elements))
1337c478bd9Sstevel@tonic-gate return (FALSE);
13461961e0fSrobinson if (!more_elements)
1357c478bd9Sstevel@tonic-gate return (TRUE); /* we are done */
1367c478bd9Sstevel@tonic-gate /*
1377c478bd9Sstevel@tonic-gate * the unfortunate side effect of non-recursion is that in
1387c478bd9Sstevel@tonic-gate * the case of freeing we must remember the next object
1397c478bd9Sstevel@tonic-gate * before we free the current object ...
1407c478bd9Sstevel@tonic-gate */
1417c478bd9Sstevel@tonic-gate if (freeing)
1427c478bd9Sstevel@tonic-gate next = (*rp)->pml_next;
14361961e0fSrobinson if (!xdr_reference(xdrs, (caddr_t *)rp,
14461961e0fSrobinson (uint_t)sizeof (struct pmaplist), (xdrproc_t)xdr_pmap))
1457c478bd9Sstevel@tonic-gate return (FALSE);
1467c478bd9Sstevel@tonic-gate if (freeing) {
1477c478bd9Sstevel@tonic-gate next_copy = next;
1487c478bd9Sstevel@tonic-gate rp = &next_copy;
1497c478bd9Sstevel@tonic-gate /*
1507c478bd9Sstevel@tonic-gate * Note that in the subsequent iteration, next_copy
1517c478bd9Sstevel@tonic-gate * gets nulled out by the xdr_reference
1527c478bd9Sstevel@tonic-gate * but next itself survives.
1537c478bd9Sstevel@tonic-gate */
1547c478bd9Sstevel@tonic-gate } else {
1557c478bd9Sstevel@tonic-gate rp = &((*rp)->pml_next);
1567c478bd9Sstevel@tonic-gate }
1577c478bd9Sstevel@tonic-gate }
1587c478bd9Sstevel@tonic-gate /*NOTREACHED*/
1597c478bd9Sstevel@tonic-gate }
1607c478bd9Sstevel@tonic-gate
1617c478bd9Sstevel@tonic-gate /*
1627c478bd9Sstevel@tonic-gate * xdr_pmaplist() is specified to take a PMAPLIST **, but is identical in
1637c478bd9Sstevel@tonic-gate * functionality to xdr_pmaplist_ptr().
1647c478bd9Sstevel@tonic-gate */
1657c478bd9Sstevel@tonic-gate bool_t
xdr_pmaplist(XDR * xdrs,PMAPLIST ** rp)16661961e0fSrobinson xdr_pmaplist(XDR *xdrs, PMAPLIST **rp)
1677c478bd9Sstevel@tonic-gate {
16861961e0fSrobinson return (xdr_pmaplist_ptr(xdrs, (pmaplist_ptr *)rp));
1697c478bd9Sstevel@tonic-gate }
1707c478bd9Sstevel@tonic-gate
1717c478bd9Sstevel@tonic-gate
1727c478bd9Sstevel@tonic-gate /*
1737c478bd9Sstevel@tonic-gate * XDR remote call arguments
1747c478bd9Sstevel@tonic-gate * written for XDR_ENCODE direction only
1757c478bd9Sstevel@tonic-gate */
1767c478bd9Sstevel@tonic-gate bool_t
xdr_rmtcallargs(XDR * xdrs,struct p_rmtcallargs * cap)17761961e0fSrobinson xdr_rmtcallargs(XDR *xdrs, struct p_rmtcallargs *cap)
1787c478bd9Sstevel@tonic-gate {
17961961e0fSrobinson uint_t lenposition, argposition, position;
18061961e0fSrobinson rpc_inline_t *buf;
1817c478bd9Sstevel@tonic-gate
1827c478bd9Sstevel@tonic-gate buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT);
1837c478bd9Sstevel@tonic-gate if (buf == NULL) {
18461961e0fSrobinson if (!xdr_u_int(xdrs, (uint_t *)&(cap->prog)) ||
18561961e0fSrobinson !xdr_u_int(xdrs, (uint_t *)&(cap->vers)) ||
18661961e0fSrobinson !xdr_u_int(xdrs, (uint_t *)&(cap->proc)))
1877c478bd9Sstevel@tonic-gate return (FALSE);
1887c478bd9Sstevel@tonic-gate } else {
1897c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, cap->prog);
1907c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, cap->vers);
1917c478bd9Sstevel@tonic-gate IXDR_PUT_U_INT32(buf, cap->proc);
1927c478bd9Sstevel@tonic-gate }
1937c478bd9Sstevel@tonic-gate
1947c478bd9Sstevel@tonic-gate /*
1957c478bd9Sstevel@tonic-gate * All the jugglery for just getting the size of the arguments
1967c478bd9Sstevel@tonic-gate */
1977c478bd9Sstevel@tonic-gate lenposition = XDR_GETPOS(xdrs);
19861961e0fSrobinson if (!xdr_u_int(xdrs, &(cap->args.args_len)))
1997c478bd9Sstevel@tonic-gate return (FALSE);
2007c478bd9Sstevel@tonic-gate argposition = XDR_GETPOS(xdrs);
20161961e0fSrobinson if (!(*cap->xdr_args)(xdrs, cap->args.args_val))
2027c478bd9Sstevel@tonic-gate return (FALSE);
2037c478bd9Sstevel@tonic-gate position = XDR_GETPOS(xdrs);
2047c478bd9Sstevel@tonic-gate cap->args.args_len = position - argposition;
2057c478bd9Sstevel@tonic-gate XDR_SETPOS(xdrs, lenposition);
20661961e0fSrobinson if (!xdr_u_int(xdrs, &(cap->args.args_len)))
2077c478bd9Sstevel@tonic-gate return (FALSE);
2087c478bd9Sstevel@tonic-gate XDR_SETPOS(xdrs, position);
2097c478bd9Sstevel@tonic-gate return (TRUE);
2107c478bd9Sstevel@tonic-gate }
2117c478bd9Sstevel@tonic-gate
2127c478bd9Sstevel@tonic-gate /*
2137c478bd9Sstevel@tonic-gate * XDR remote call results
2147c478bd9Sstevel@tonic-gate * written for XDR_DECODE direction only
2157c478bd9Sstevel@tonic-gate */
2167c478bd9Sstevel@tonic-gate bool_t
xdr_rmtcallres(XDR * xdrs,struct p_rmtcallres * crp)21761961e0fSrobinson xdr_rmtcallres(XDR *xdrs, struct p_rmtcallres *crp)
2187c478bd9Sstevel@tonic-gate {
21961961e0fSrobinson if (xdr_u_int(xdrs, (uint_t *)&crp->port) &&
22061961e0fSrobinson xdr_u_int(xdrs, &crp->res.res_len))
22161961e0fSrobinson return ((*(crp->xdr_res))(xdrs, crp->res.res_val));
2227c478bd9Sstevel@tonic-gate return (FALSE);
2237c478bd9Sstevel@tonic-gate }
224