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 /*
31 * NAME
32 * copystream - copy one FILE stream to another
33 *
34 * SYNOPSIS
35 * int copystream(FILE *infp, FILE *outfp)
36 *
37 * DESCRIPTION
38 * copystream() copies one stream to another. The stream
39 * infp must be opened for reading and the stream outfp
40 * must be opened for writing.
41 *
42 * It returns true if the stream is successively copied;
43 * false if any writes fail.
44 */
45
46 #include "libmail.h"
47 #include <sys/types.h>
48
49 int
copystream(FILE * infp,FILE * outfp)50 copystream(FILE *infp, FILE *outfp)
51 {
52 char buffer[BUFSIZ];
53 size_t nread;
54
55 while ((nread = fread(buffer, sizeof (char), sizeof (buffer),
56 infp)) > 0)
57 if (fwrite(buffer, sizeof (char), nread, outfp) != nread)
58 return (0);
59 return (1);
60 }
61