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static char sccsid
[] = "@(#)xdr_stdio.c 1.4 85/03/14 Copyr 1984 Sun Micro";
* xdr_stdio.c, XDR implementation on standard i/o file.
* Copyright (C) 1984, Sun Microsystems, Inc.
* This set of routines implements a XDR on a stdio stream.
* XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
static bool_t
xdrstdio_getlong();
static bool_t
xdrstdio_putlong();
static bool_t
xdrstdio_getbytes();
static bool_t
xdrstdio_putbytes();
static u_int
xdrstdio_getpos();
static bool_t
xdrstdio_setpos();
static long * xdrstdio_inline();
static void xdrstdio_destroy();
* Ops vector for stdio type XDR
static struct xdr_ops xdrstdio_ops
= {
xdrstdio_getlong
, /* deseraialize a long int */
xdrstdio_putlong
, /* seraialize a long int */
xdrstdio_getbytes
, /* deserialize counted bytes */
xdrstdio_putbytes
, /* serialize counted bytes */
xdrstdio_getpos
, /* get offset in the stream */
xdrstdio_setpos
, /* set offset in the stream */
xdrstdio_inline
, /* prime stream for inline macros */
xdrstdio_destroy
/* destroy stream */
* Initialize a stdio xdr stream.
* Sets the xdr stream handle xdrs for use on the stream file.
* Operation flag is set to op.
xdrstdio_create(xdrs
, file
, op
)
xdrs
->x_ops
= &xdrstdio_ops
;
xdrs
->x_private
= (caddr_t
)file
;
* Destroy a stdio xdr stream.
* Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
(void)fflush((FILE *)xdrs
->x_private
);
/* xx should we close the file ?? */
xdrstdio_getlong(xdrs
, lp
)
if (fread((caddr_t
)lp
, sizeof(long), 1, (FILE *)xdrs
->x_private
) != 1)
xdrstdio_putlong(xdrs
, lp
)
long mycopy
= htonl(*lp
);
if (fwrite((caddr_t
)lp
, sizeof(long), 1, (FILE *)xdrs
->x_private
) != 1)
xdrstdio_getbytes(xdrs
, addr
, len
)
if ((len
!= 0) && (fread(addr
, (int)len
, 1, (FILE *)xdrs
->x_private
) != 1))
xdrstdio_putbytes(xdrs
, addr
, len
)
if ((len
!= 0) && (fwrite(addr
, (int)len
, 1, (FILE *)xdrs
->x_private
) != 1))
return ((u_int
) ftell((FILE *)xdrs
->x_private
));
xdrstdio_setpos(xdrs
, pos
)
return ((fseek((FILE *)xdrs
->x_private
, (long)pos
, 0) < 0) ?
xdrstdio_inline(xdrs
, len
)
* Must do some work to implement this: must insure
* enough data in the underlying stdio buffer,
* that the buffer is aligned so that we can indirect through a
* long *, and stuff this pointer in xdrs->x_buf. Doing
* a fread or fwrite to a scratch buffer would defeat
* most of the gains to be had here and require storage
* management on this buffer, so we don't do this.