xref: /minix3/lib/libc/stdio/perror.c (revision 2fe8fb192fe7e8720e3e7a77f928da545e872a6a)
1*2fe8fb19SBen Gras /*	$NetBSD: perror.c,v 1.24 2006/01/26 11:13:42 kleink Exp $	*/
2b7061124SArun Thomas 
3*2fe8fb19SBen Gras /*
4*2fe8fb19SBen Gras  * Copyright (c) 1988, 1993
5*2fe8fb19SBen Gras  *	The Regents of the University of California.  All rights reserved.
6*2fe8fb19SBen Gras  *
7*2fe8fb19SBen Gras  * Redistribution and use in source and binary forms, with or without
8*2fe8fb19SBen Gras  * modification, are permitted provided that the following conditions
9*2fe8fb19SBen Gras  * are met:
10*2fe8fb19SBen Gras  * 1. Redistributions of source code must retain the above copyright
11*2fe8fb19SBen Gras  *    notice, this list of conditions and the following disclaimer.
12*2fe8fb19SBen Gras  * 2. Redistributions in binary form must reproduce the above copyright
13*2fe8fb19SBen Gras  *    notice, this list of conditions and the following disclaimer in the
14*2fe8fb19SBen Gras  *    documentation and/or other materials provided with the distribution.
15*2fe8fb19SBen Gras  * 3. Neither the name of the University nor the names of its contributors
16*2fe8fb19SBen Gras  *    may be used to endorse or promote products derived from this software
17*2fe8fb19SBen Gras  *    without specific prior written permission.
18*2fe8fb19SBen Gras  *
19*2fe8fb19SBen Gras  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20*2fe8fb19SBen Gras  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21*2fe8fb19SBen Gras  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22*2fe8fb19SBen Gras  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23*2fe8fb19SBen Gras  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24*2fe8fb19SBen Gras  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25*2fe8fb19SBen Gras  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26*2fe8fb19SBen Gras  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27*2fe8fb19SBen Gras  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28*2fe8fb19SBen Gras  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29*2fe8fb19SBen Gras  * SUCH DAMAGE.
30*2fe8fb19SBen Gras  */
31*2fe8fb19SBen Gras 
32*2fe8fb19SBen Gras #include <sys/cdefs.h>
33*2fe8fb19SBen Gras #if defined(LIBC_SCCS) && !defined(lint)
34*2fe8fb19SBen Gras #if 0
35*2fe8fb19SBen Gras static char sccsid[] = "@(#)perror.c	8.1 (Berkeley) 6/4/93";
36*2fe8fb19SBen Gras #else
37*2fe8fb19SBen Gras __RCSID("$NetBSD: perror.c,v 1.24 2006/01/26 11:13:42 kleink Exp $");
38b7061124SArun Thomas #endif
39*2fe8fb19SBen Gras #endif /* LIBC_SCCS and not lint */
40*2fe8fb19SBen Gras 
41*2fe8fb19SBen Gras #include "namespace.h"
42b7061124SArun Thomas #include <errno.h>
43*2fe8fb19SBen Gras #include <limits.h>
44b7061124SArun Thomas #include <stdio.h>
45b7061124SArun Thomas #include <string.h>
46*2fe8fb19SBen Gras #include "extern.h"
47b7061124SArun Thomas 
48*2fe8fb19SBen Gras /*
49*2fe8fb19SBen Gras  * Since perror() is not allowed to change the contents of strerror()'s
50*2fe8fb19SBen Gras  * static buffer, both functions supply their own buffers to strerror_r().
51*2fe8fb19SBen Gras  */
52b7061124SArun Thomas 
53b7061124SArun Thomas void
perror(const char * s)54b7061124SArun Thomas perror(const char *s)
55b7061124SArun Thomas {
56*2fe8fb19SBen Gras 	const char *separator;
57*2fe8fb19SBen Gras 	char buf[NL_TEXTMAX];
58b7061124SArun Thomas 
59*2fe8fb19SBen Gras 	if (s == NULL)
60*2fe8fb19SBen Gras 		s = "";
61*2fe8fb19SBen Gras 	if (*s == '\0')
62*2fe8fb19SBen Gras 		separator = "";
63*2fe8fb19SBen Gras 	else
64*2fe8fb19SBen Gras 		separator = ": ";
65*2fe8fb19SBen Gras 
66*2fe8fb19SBen Gras 	(void)strerror_r(errno, buf, sizeof(buf));
67*2fe8fb19SBen Gras 	(void)fprintf(stderr, "%s%s%s\n", s, separator, buf);
68b7061124SArun Thomas }
69