#ifndef lint static char rcs_id[] = {"$Header: xdr_mem.c,v 1.1 86/09/05 09:18:41 tadl Exp $"}; #endif not lint /* * RCS Info * $Locker: tadl $ */ #ifndef lint static char sccsid[] = "@(#)xdr_mem.c 1.1 85/05/30 Copyr 1984 Sun Micro"; #endif /* * xdr_mem.h, XDR implementation using memory buffers. * * Copyright (C) 1984, Sun Microsystems, Inc. * * 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. * */ #ifdef KERNEL #include "../h/param.h" #include "../rpc/types.h" #include "../rpc/xdr.h" #include "../netinet/in.h" #else #include "types.h" /* <> */ #include "xdr.h" /* <> */ #include <netinet/in.h> #endif static bool_t xdrmem_getlong(); static bool_t xdrmem_putlong(); static bool_t xdrmem_getbytes(); static bool_t xdrmem_putbytes(); static u_int xdrmem_getpos(); static bool_t xdrmem_setpos(); static long * xdrmem_inline(); static void xdrmem_destroy(); static struct xdr_ops xdrmem_ops = { xdrmem_getlong, xdrmem_putlong, xdrmem_getbytes, xdrmem_putbytes, xdrmem_getpos, xdrmem_setpos, xdrmem_inline, xdrmem_destroy }; /* * The procedure xdrmem_create initializes a stream descriptor for a * memory buffer. */ void xdrmem_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; } static void xdrmem_destroy(/*xdrs*/) /*XDR *xdrs;*/ { } static bool_t xdrmem_getlong(xdrs, lp) register XDR *xdrs; long *lp; { if ((xdrs->x_handy -= sizeof(long)) < 0) return (FALSE); *lp = ntohl(*((long *)(xdrs->x_private))); xdrs->x_private += sizeof(long); return (TRUE); } static bool_t xdrmem_putlong(xdrs, lp) register XDR *xdrs; long *lp; { if ((xdrs->x_handy -= sizeof(long)) < 0) return (FALSE); *(long *)xdrs->x_private = htonl(*lp); xdrs->x_private += sizeof(long); return (TRUE); } static bool_t 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, len); xdrs->x_private += len; return (TRUE); } static bool_t 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, len); xdrs->x_private += len; return (TRUE); } static u_int xdrmem_getpos(xdrs) register XDR *xdrs; { return ((u_int)xdrs->x_private - (u_int)xdrs->x_base); } static bool_t 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); } static long * 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); }