GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/rpc/xdr_stdio.c Lines: 0 24 0.0 %
Date: 2017-11-13 Branches: 0 12 0.0 %

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/*	$OpenBSD: xdr_stdio.c,v 1.14 2015/11/01 03:45:29 guenther Exp $ */
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/*
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 * Copyright (c) 2010, Oracle America, Inc.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are
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 * met:
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 *
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 *     * Redistributions of source code must retain the above copyright
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 *       notice, this list of conditions and the following disclaimer.
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 *     * Redistributions in binary form must reproduce the above
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 *       copyright notice, this list of conditions and the following
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 *       disclaimer in the documentation and/or other materials
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 *       provided with the distribution.
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 *     * Neither the name of the "Oracle America, Inc." nor the names of its
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 *       contributors may be used to endorse or promote products derived
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 *       from this software without specific prior written permission.
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 *
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/*
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 * xdr_stdio.c, XDR implementation on standard i/o file.
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 *
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 * This set of routines implements a XDR on a stdio stream.
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 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
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 * from the stream.
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 */
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#include <stdio.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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static bool_t	xdrstdio_getlong(XDR *, long *);
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static bool_t	xdrstdio_putlong(XDR *, long *);
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static bool_t	xdrstdio_getbytes(XDR *, caddr_t, u_int);
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static bool_t	xdrstdio_putbytes(XDR *, caddr_t, u_int);
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static u_int	xdrstdio_getpos(XDR *);
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static bool_t	xdrstdio_setpos(XDR *, u_int);
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static int32_t *xdrstdio_inline(XDR *, u_int);
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static void	xdrstdio_destroy(XDR *);
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/*
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 * Ops vector for stdio type XDR
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 */
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static struct xdr_ops	xdrstdio_ops = {
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	xdrstdio_getlong,	/* deserialize a long int */
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	xdrstdio_putlong,	/* serialize a long int */
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	xdrstdio_getbytes,	/* deserialize counted bytes */
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	xdrstdio_putbytes,	/* serialize counted bytes */
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	xdrstdio_getpos,	/* get offset in the stream */
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	xdrstdio_setpos,	/* set offset in the stream */
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	xdrstdio_inline,	/* prime stream for inline macros */
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	xdrstdio_destroy,	/* destroy stream */
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	NULL,			/* xdrstdio_control */
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};
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/*
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 * Initialize a stdio xdr stream.
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 * Sets the xdr stream handle xdrs for use on the stream file.
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 * Operation flag is set to op.
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 */
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void
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xdrstdio_create(XDR *xdrs, FILE *file, enum xdr_op op)
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{
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	xdrs->x_op = op;
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	xdrs->x_ops = &xdrstdio_ops;
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	xdrs->x_private = (caddr_t)file;
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	xdrs->x_handy = 0;
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	xdrs->x_base = 0;
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}
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/*
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 * Destroy a stdio xdr stream.
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 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
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 */
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static void
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xdrstdio_destroy(XDR *xdrs)
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{
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	(void)fflush((FILE *)xdrs->x_private);
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	/* xx should we close the file ?? */
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}
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static bool_t
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xdrstdio_getlong(XDR *xdrs, long int *lp)
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{
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	u_int32_t temp;
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	if (fread(&temp, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
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		return (FALSE);
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	*lp = (long)ntohl(temp);
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	return (TRUE);
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}
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static bool_t
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xdrstdio_putlong(XDR *xdrs, long int *lp)
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{
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	int32_t mycopy = htonl((u_int32_t)*lp);
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	if (fwrite(&mycopy, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
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		return (FALSE);
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	return (TRUE);
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}
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static bool_t
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xdrstdio_getbytes(XDR *xdrs, caddr_t addr, u_int len)
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{
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	if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
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		return (FALSE);
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	return (TRUE);
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}
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static bool_t
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xdrstdio_putbytes(XDR *xdrs, caddr_t addr, u_int len)
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{
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	if ((len != 0) && (fwrite(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
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		return (FALSE);
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	return (TRUE);
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}
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static u_int
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xdrstdio_getpos(XDR *xdrs)
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{
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	return ((u_int) ftell((FILE *)xdrs->x_private));
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}
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static bool_t
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xdrstdio_setpos(XDR *xdrs, u_int pos)
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{
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	return ((fseek((FILE *)xdrs->x_private, (long)pos, SEEK_SET) < 0) ?
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		FALSE : TRUE);
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}
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static int32_t *
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xdrstdio_inline(XDR *xdrs, u_int len)
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{
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	/*
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	 * Must do some work to implement this: must ensure
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	 * enough data in the underlying stdio buffer,
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	 * that the buffer is aligned so that we can indirect through a
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	 * long *, and stuff this pointer in xdrs->x_buf.  Doing
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	 * a fread or fwrite to a scratch buffer would defeat
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	 * most of the gains to be had here and require storage
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	 * management on this buffer, so we don't do this.
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	 */
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	return (NULL);
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}