xref: /netbsd/lib/libc/gen/vwarn.c (revision bf9ec67e)
1 /*	$NetBSD: vwarn.c,v 1.10 2002/05/26 14:03:20 wiz Exp $	*/
2 
3 /*-
4  * Copyright (c) 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #if defined(LIBC_SCCS) && !defined(lint)
38 #if 0
39 static char sccsid[] = "@(#)err.c	8.1 (Berkeley) 6/4/93";
40 #else
41 __RCSID("$NetBSD: vwarn.c,v 1.10 2002/05/26 14:03:20 wiz Exp $");
42 #endif
43 #endif /* LIBC_SCCS and not lint */
44 
45 #ifndef __NO_NAMESPACE_H	/* XXX */
46 #include "namespace.h"
47 #endif
48 #if HAVE_CONFIG_H
49 #include "config.h"
50 #endif
51 #include <err.h>
52 #include <errno.h>
53 #include <stdarg.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 
58 #ifdef __weak_alias
59 __weak_alias(vwarn, _vwarn)
60 #endif
61 
62 void
63 _vwarn(fmt, ap)
64 	const char *fmt;
65 	_BSD_VA_LIST_ ap;
66 {
67 	int sverrno;
68 
69 	sverrno = errno;
70 	(void)fprintf(stderr, "%s: ", getprogname());
71 	if (fmt != NULL) {
72 		(void)vfprintf(stderr, fmt, ap);
73 		(void)fprintf(stderr, ": ");
74 	}
75 	(void)fprintf(stderr, "%s\n", strerror(sverrno));
76 }
77