185 lines
4.2 KiB
C
185 lines
4.2 KiB
C
/* @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC */
|
|
/*
|
|
* 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
|
|
*/
|
|
#if !defined(lint) && defined(SCCSIDS)
|
|
static char sccsid[] = "@(#)xdr_mem.c 1.19 87/08/11 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.
|
|
*
|
|
*/
|
|
|
|
|
|
#include <rpc/types.h>
|
|
#include <rpc/xdr.h>
|
|
#include <netinet/in.h>
|
|
|
|
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 = (long)ntohl((u_long)(*((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 = (long)htonl((u_long)(*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);
|
|
}
|