/* xdr_mem.c - XDR implementation using memory buffers *//* Copyright 1984-1999 Wind River Systems, Inc. */#include "copyright_wrs.h"/* * Copyright (C) 1984, Sun Microsystems, Inc. * * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part.  Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California  94043 *//*modification history--------------------01g,27jul99,elg  Add xdrmem_putlongs() and xdrmem_putwords() routines.01f,26may92,rrr  the tree shuffle		  -changed includes to have absolute path from h/01e,04oct91,rrr  passed through the ansification filter		  -changed includes to have absolute path from h/		  -changed copyright notice01d,19apr90,hjb   de-linted.01c,27oct89,hjb   upgraded to 4.001b,11nov87,jlf   added wrs copyright, title, mod history, etc.01a,01nov87,rdc   first VxWorks version*/#ifndef lint/* static char sccsid[] = "@(#)xdr_mem.c 1.1 86/02/03 Copyr 1984 Sun Micro"; */#endif/* * xdr_mem.c, XDR implementation using memory buffers. * * If you have some data to be interpreted as external data representation * or to be converted to external data representation in a memory buffer, * then this is the package for you. * */#include "rpc/rpctypes.h"#include "rpc/xdr.h"#include "netinet/in.h"#include "vxWorks.h"LOCAL bool_t	xdrmem_getlong();LOCAL bool_t	xdrmem_putlong();LOCAL bool_t	xdrmem_getbytes();LOCAL bool_t	xdrmem_putbytes();LOCAL bool_t	xdrmem_putwords();LOCAL bool_t	xdrmem_putlongs();LOCAL u_int	xdrmem_getpos();LOCAL bool_t	xdrmem_setpos();LOCAL long *	xdrmem_inline();LOCAL void	xdrmem_destroy();static struct	xdr_ops xdrmem_ops = {	xdrmem_getlong,	xdrmem_putlong,	xdrmem_getbytes,	xdrmem_putbytes,	xdrmem_putwords,	xdrmem_putlongs,	xdrmem_getpos,	xdrmem_setpos,	xdrmem_inline,	xdrmem_destroy};/* * The procedure xdrmem_create initializes a stream descriptor for a * memory buffer. */voidxdrmem_create(xdrs, addr, size, op)	register XDR *xdrs;	caddr_t addr;	u_int size;	enum xdr_op op;{	xdrs->x_op = op;	xdrs->x_ops = &xdrmem_ops;	xdrs->x_private = xdrs->x_base = addr;	xdrs->x_handy = size;}LOCAL void						/* 4.0 */xdrmem_destroy(/*xdrs*/)	/*XDR *xdrs;*/{}LOCAL bool_t						/* 4.0 */xdrmem_getlong(xdrs, lp)	register XDR *xdrs;	long *lp;{	if ((xdrs->x_handy -= sizeof(long)) < 0)		return (FALSE);	*lp = ntohl(*((u_long *)(xdrs->x_private)));	xdrs->x_private += sizeof(long);	return (TRUE);}LOCAL bool_t						/* 4.0 */xdrmem_putlong(xdrs, lp)	register XDR *xdrs;	long *lp;{	if ((xdrs->x_handy -= sizeof(long)) < 0)		return (FALSE);	*(u_long *)xdrs->x_private = htonl((u_long) *lp);	xdrs->x_private += sizeof(long);	return (TRUE);}LOCAL bool_t						/* 4.0 */xdrmem_getbytes(xdrs, addr, len)	register XDR *xdrs;	caddr_t addr;	register u_int len;{	if ((xdrs->x_handy -= len) < 0)		return (FALSE);	bcopy(xdrs->x_private, addr, (int) len);	xdrs->x_private += len;	return (TRUE);}LOCAL bool_t						/* 4.0 */xdrmem_putbytes(xdrs, addr, len)	register XDR *xdrs;	caddr_t addr;	register u_int len;{	if ((xdrs->x_handy -= len) < 0)		return (FALSE);	bcopy(addr, xdrs->x_private, (int) len);	xdrs->x_private += len;	return (TRUE);}LOCAL bool_t						/* 4.0 */xdrmem_putwords (xdrs, addr, len)	register XDR *	xdrs;	caddr_t 	addr;	register u_int 	len;{	if ((xdrs->x_handy -= len * 2) < 0)		return (FALSE);	bcopyWords (addr, xdrs->x_private, (int) len);	xdrs->x_private += len * 2;	return (TRUE);}LOCAL bool_t						/* 4.0 */xdrmem_putlongs (xdrs, addr, len)	register XDR *	xdrs;	caddr_t 	addr;	register u_int 	len;{	if ((xdrs->x_handy -= len * 4) < 0)		return (FALSE);	bcopyLongs (addr, xdrs->x_private, (int) len);	xdrs->x_private += len * 4;	return (TRUE);}LOCAL u_int						/* 4.0 */xdrmem_getpos(xdrs)	register XDR *xdrs;{	return ((u_int)xdrs->x_private - (u_int)xdrs->x_base);}LOCAL bool_t						/* 4.0 */xdrmem_setpos(xdrs, pos)	register XDR *xdrs;	u_int pos;{	register caddr_t newaddr = xdrs->x_base + pos;	register caddr_t lastaddr = xdrs->x_private + xdrs->x_handy;	if ((long)newaddr > (long)lastaddr)		return (FALSE);	xdrs->x_private = newaddr;	xdrs->x_handy = (int)lastaddr - (int)newaddr;	return (TRUE);}LOCAL long *						/* 4.0 */xdrmem_inline(xdrs, len)	register XDR *xdrs;	int len;{	long *buf = 0;	if (xdrs->x_handy >= len) {		xdrs->x_handy -= len;		buf = (long *) xdrs->x_private;		xdrs->x_private += len;	}	return (buf);}