1 /* $NetBSD: rpcb_prot.c,v 1.3 2000/07/14 08:40:42 fvdl Exp $ */
4 * Copyright (c) 2009, Sun Microsystems, Inc.
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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31 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
34 /* #ident "@(#)rpcb_prot.c 1.13 94/04/24 SMI" */
36 #if defined(LIBC_SCCS) && !defined(lint)
37 static char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
44 * XDR routines for the rpcbinder version 3.
46 * Copyright (C) 1984, 1988, Sun Microsystems, Inc.
49 #include "namespace.h"
51 #include <rpc/types.h>
53 #include <rpc/rpcb_prot.h>
54 #include <rpc/rpc_com.h>
55 #include "un-namespace.h"
58 xdr_rpcb(XDR *xdrs, RPCB *objp)
60 if (!xdr_rpcprog(xdrs, &objp->r_prog)) {
63 if (!xdr_rpcvers(xdrs, &objp->r_vers)) {
66 if (!xdr_string(xdrs, &objp->r_netid, RPC_MAXDATASIZE)) {
69 if (!xdr_string(xdrs, &objp->r_addr, RPC_MAXDATASIZE)) {
72 if (!xdr_string(xdrs, &objp->r_owner, RPC_MAXDATASIZE)) {
79 * rpcblist_ptr implements a linked list. The RPCL definition from
84 * struct rpcblist *rpcb_next;
86 * typedef rpcblist *rpcblist_ptr;
88 * Recall that "pointers" in XDR are encoded as a boolean, indicating whether
89 * there's any data behind the pointer, followed by the data (if any exists).
90 * The boolean can be interpreted as ``more data follows me''; if FALSE then
91 * nothing follows the boolean; if TRUE then the boolean is followed by an
92 * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct
95 * This could be implemented via the xdr_pointer type, though this would
96 * result in one recursive call per element in the list. Rather than do that
97 * we can ``unwind'' the recursion into a while loop and use xdr_reference to
98 * serialize the rpcb elements.
102 xdr_rpcblist_ptr(XDR *xdrs, rpcblist_ptr *rp)
105 * more_elements is pre-computed in case the direction is
106 * XDR_ENCODE or XDR_FREE. more_elements is overwritten by
107 * xdr_bool when the direction is XDR_DECODE.
109 bool_t more_elements;
110 int freeing = (xdrs->x_op == XDR_FREE);
112 rpcblist_ptr next_copy;
116 more_elements = (bool_t)(*rp != NULL);
117 if (! xdr_bool(xdrs, &more_elements)) {
120 if (! more_elements) {
121 return (TRUE); /* we are done */
124 * the unfortunate side effect of non-recursion is that in
125 * the case of freeing we must remember the next object
126 * before we free the current object ...
129 next = (*rp)->rpcb_next;
130 if (! xdr_reference(xdrs, (caddr_t *)rp,
131 (u_int)sizeof (rpcblist), (xdrproc_t)xdr_rpcb)) {
138 * Note that in the subsequent iteration, next_copy
139 * gets nulled out by the xdr_reference
140 * but next itself survives.
143 rp = &((*rp)->rpcb_next);
150 * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in
151 * functionality to xdr_rpcblist_ptr().
154 xdr_rpcblist(XDR *xdrs, RPCBLIST **rp)
158 dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp);
164 xdr_rpcb_entry(XDR *xdrs, rpcb_entry *objp)
166 if (!xdr_string(xdrs, &objp->r_maddr, RPC_MAXDATASIZE)) {
169 if (!xdr_string(xdrs, &objp->r_nc_netid, RPC_MAXDATASIZE)) {
172 if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) {
175 if (!xdr_string(xdrs, &objp->r_nc_protofmly, RPC_MAXDATASIZE)) {
178 if (!xdr_string(xdrs, &objp->r_nc_proto, RPC_MAXDATASIZE)) {
185 xdr_rpcb_entry_list_ptr(XDR *xdrs, rpcb_entry_list_ptr *rp)
188 * more_elements is pre-computed in case the direction is
189 * XDR_ENCODE or XDR_FREE. more_elements is overwritten by
190 * xdr_bool when the direction is XDR_DECODE.
192 bool_t more_elements;
193 int freeing = (xdrs->x_op == XDR_FREE);
194 rpcb_entry_list_ptr next;
195 rpcb_entry_list_ptr next_copy;
199 more_elements = (bool_t)(*rp != NULL);
200 if (! xdr_bool(xdrs, &more_elements)) {
203 if (! more_elements) {
204 return (TRUE); /* we are done */
207 * the unfortunate side effect of non-recursion is that in
208 * the case of freeing we must remember the next object
209 * before we free the current object ...
212 next = (*rp)->rpcb_entry_next;
213 if (! xdr_reference(xdrs, (caddr_t *)rp,
214 (u_int)sizeof (rpcb_entry_list),
215 (xdrproc_t)xdr_rpcb_entry)) {
222 * Note that in the subsequent iteration, next_copy
223 * gets nulled out by the xdr_reference
224 * but next itself survives.
227 rp = &((*rp)->rpcb_entry_next);
234 * XDR remote call arguments
235 * written for XDR_ENCODE direction only
238 xdr_rpcb_rmtcallargs(XDR *xdrs, struct rpcb_rmtcallargs *p)
240 struct r_rpcb_rmtcallargs *objp =
241 (struct r_rpcb_rmtcallargs *)(void *)p;
242 u_int lenposition, argposition, position;
245 buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT);
247 if (!xdr_rpcprog(xdrs, &objp->prog)) {
250 if (!xdr_rpcvers(xdrs, &objp->vers)) {
253 if (!xdr_rpcproc(xdrs, &objp->proc)) {
257 IXDR_PUT_U_INT32(buf, objp->prog);
258 IXDR_PUT_U_INT32(buf, objp->vers);
259 IXDR_PUT_U_INT32(buf, objp->proc);
263 * All the jugglery for just getting the size of the arguments
265 lenposition = XDR_GETPOS(xdrs);
266 if (! xdr_u_int(xdrs, &(objp->args.args_len))) {
269 argposition = XDR_GETPOS(xdrs);
270 if (! (*objp->xdr_args)(xdrs, objp->args.args_val)) {
273 position = XDR_GETPOS(xdrs);
274 objp->args.args_len = (u_int)((u_long)position - (u_long)argposition);
275 XDR_SETPOS(xdrs, lenposition);
276 if (! xdr_u_int(xdrs, &(objp->args.args_len))) {
279 XDR_SETPOS(xdrs, position);
284 * XDR remote call results
285 * written for XDR_DECODE direction only
288 xdr_rpcb_rmtcallres(XDR *xdrs, struct rpcb_rmtcallres *p)
291 struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)(void *)p;
293 if (!xdr_string(xdrs, &objp->addr, RPC_MAXDATASIZE)) {
296 if (!xdr_u_int(xdrs, &objp->results.results_len)) {
299 dummy = (*(objp->xdr_res))(xdrs, objp->results.results_val);
304 xdr_netbuf(XDR *xdrs, struct netbuf *objp)
309 if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) {
313 dummy = xdr_bytes(xdrs, (char **) pp,
314 (u_int *)&(objp->len), objp->maxlen);