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.
46 #include <rpc/types.h>
48 #include <netinet/in.h>
50 static bool_t xdrmem_getlong();
51 static bool_t xdrmem_putlong();
52 static bool_t xdrmem_getbytes();
53 static bool_t xdrmem_putbytes();
54 static u_int xdrmem_getpos();
55 static bool_t xdrmem_setpos();
56 static long * xdrmem_inline();
57 static void xdrmem_destroy();
59 static struct xdr_ops xdrmem_ops = {
71 * The procedure xdrmem_create initializes a stream descriptor for a
75 xdrmem_create(xdrs, addr, size, op)
83 xdrs->x_ops = &xdrmem_ops;
84 xdrs->x_private = xdrs->x_base = addr;
89 xdrmem_destroy(/*xdrs*/)
95 xdrmem_getlong(xdrs, lp)
100 if ((xdrs->x_handy -= sizeof(long)) < 0)
102 *lp = (long)ntohl((u_long)(*((long *)(xdrs->x_private))));
103 xdrs->x_private += sizeof(long);
108 xdrmem_putlong(xdrs, lp)
113 if ((xdrs->x_handy -= sizeof(long)) < 0)
115 *(long *)xdrs->x_private = (long)htonl((u_long)(*lp));
116 xdrs->x_private += sizeof(long);
121 xdrmem_getbytes(xdrs, addr, len)
127 if ((xdrs->x_handy -= len) < 0)
129 bcopy(xdrs->x_private, addr, len);
130 xdrs->x_private += len;
135 xdrmem_putbytes(xdrs, addr, len)
141 if ((xdrs->x_handy -= len) < 0)
143 bcopy(addr, xdrs->x_private, len);
144 xdrs->x_private += len;
153 return ((u_int)xdrs->x_private - (u_int)xdrs->x_base);
157 xdrmem_setpos(xdrs, pos)
161 register caddr_t newaddr = xdrs->x_base + pos;
162 register caddr_t lastaddr = xdrs->x_private + xdrs->x_handy;
164 if ((long)newaddr > (long)lastaddr)
166 xdrs->x_private = newaddr;
167 xdrs->x_handy = (int)lastaddr - (int)newaddr;
172 xdrmem_inline(xdrs, len)
178 if (xdrs->x_handy >= len) {
179 xdrs->x_handy -= len;
180 buf = (long *) xdrs->x_private;
181 xdrs->x_private += len;