157434Smarkm/* Copyright (C) 1991-1993,1997,1998,2000-2002 Free Software Foundation, Inc.
257434Smarkm   This file is part of the GNU C Library.
3263970Sdes
4263970Sdes   The GNU C Library is free software; you can redistribute it and/or
557434Smarkm   modify it under the terms of the GNU Lesser General Public
6197679Sdes   License as published by the Free Software Foundation; either
7158519Sdes   version 2.1 of the License, or (at your option) any later version.
857434Smarkm
9263970Sdes   The GNU C Library is distributed in the hope that it will be useful,
10197679Sdes   but WITHOUT ANY WARRANTY; without even the implied warranty of
11197679Sdes   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12263970Sdes   Lesser General Public License for more details.
13197679Sdes
14263970Sdes   You should have received a copy of the GNU Lesser General Public
15263970Sdes   License along with the GNU C Library; if not, write to the Free
16263421Sdes   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
1757434Smarkm   02111-1307 USA.
18263970Sdes*/
19263970Sdes
20263970Sdes
2157434Smarkm#include <errno.h>
2257434Smarkm#include <stdio.h>
2374818Sru#include <string.h>
24158529Sdes
25158529Sdes
26/**	Print a line on stderr consisting of the text in \a s, a colon,
27 *	a space, a message describing the meaning of the contents of
28 *	`errno' and a newline.
29 *	If \a s is NULL or "", the colon and space are omitted.
30 */
31
32void
33perror(const char *s)
34{
35	const char *colon;
36	char buffer[1024];
37
38	// ToDo: we should not change the orientation of the stream
39	// (wide char support is currently disabled, so this doesn't matter yet)
40
41	if (s == NULL || *s == '\0')
42		s = colon = "";
43	else
44		colon = ": ";
45
46	if (strerror_r(errno, buffer, sizeof(buffer)) != 0)
47		snprintf(buffer, sizeof(buffer), "Unknown error %d", errno);
48
49	fprintf(stderr, "%s%s%s\n", s, colon, buffer);
50}
51
52