1 /* @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC */
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30 #if !defined(lint) && defined(SCCSIDS)
31 static char sccsid[] = "@(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";
35 * xdr_mem.h, XDR implementation using memory buffers.
37 * Copyright (C) 1984, Sun Microsystems, Inc.
39 * If you have some data to be interpreted as external data representation
40 * or to be converted to external data representation in a memory buffer,
41 * then this is the package for you.
47 #ifdef HAVE_ARPA_INET_H
48 #include <arpa/inet.h>
53 #include <rpc/types.h>
58 static bool_t xdrmem_getlong();
59 static bool_t xdrmem_putlong();
60 static bool_t xdrmem_getbytes();
61 static bool_t xdrmem_putbytes();
62 static u_int xdrmem_getpos();
63 static bool_t xdrmem_setpos();
64 static long * xdrmem_inline();
65 static void xdrmem_destroy();
67 static struct xdr_ops xdrmem_ops = {
79 * The procedure xdrmem_create initializes a stream descriptor for a
83 xdrmem_create(xdrs, addr, size, op)
91 xdrs->x_ops = &xdrmem_ops;
92 xdrs->x_private = xdrs->x_base = addr;
97 xdrmem_destroy(/*xdrs*/)
103 xdrmem_getlong(xdrs, lp)
108 if ((xdrs->x_handy -= sizeof(long)) < 0)
110 *lp = (long)ntohl((u_long)(*((long *)(xdrs->x_private))));
111 xdrs->x_private += sizeof(long);
116 xdrmem_putlong(xdrs, lp)
121 if ((xdrs->x_handy -= sizeof(long)) < 0)
123 *(long *)xdrs->x_private = (long)htonl((u_long)(*lp));
124 xdrs->x_private += sizeof(long);
129 xdrmem_getbytes(xdrs, addr, len)
135 if ((xdrs->x_handy -= len) < 0)
137 memcpy (addr, xdrs->x_private, len);
138 xdrs->x_private += len;
143 xdrmem_putbytes(xdrs, addr, len)
149 if ((xdrs->x_handy -= len) < 0)
151 memcpy (xdrs->x_private, addr, len);
152 xdrs->x_private += len;
161 return xdrs->x_private - xdrs->x_base;
165 xdrmem_setpos(xdrs, pos)
169 register caddr_t newaddr = xdrs->x_base + pos;
170 register caddr_t lastaddr = xdrs->x_private + xdrs->x_handy;
172 if ((long)newaddr > (long)lastaddr)
174 xdrs->x_private = newaddr;
175 xdrs->x_handy = lastaddr - newaddr;
180 xdrmem_inline(xdrs, len)
186 if (xdrs->x_handy >= len) {
187 xdrs->x_handy -= len;
188 buf = (long *) xdrs->x_private;
189 xdrs->x_private += len;