1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32/*
33 *  NAME
34 *	copystream - copy one FILE stream to another
35 *
36 *  SYNOPSIS
37 *	int copystream(FILE *infp, FILE *outfp)
38 *
39 *  DESCRIPTION
40 *	copystream() copies one stream to another. The stream
41 *	infp must be opened for reading and the stream outfp
42 *	must be opened for writing.
43 *
44 *	It returns true if the stream is successively copied;
45 *	false if any writes fail.
46 */
47
48#include "libmail.h"
49#include <sys/types.h>
50
51int
52copystream(FILE *infp, FILE *outfp)
53{
54	char buffer[BUFSIZ];
55	size_t nread;
56
57	while ((nread = fread(buffer, sizeof (char), sizeof (buffer),
58	    infp)) > 0)
59		if (fwrite(buffer, sizeof (char), nread, outfp) != nread)
60			return (0);
61	return (1);
62}
63