xref: /illumos-gate/usr/src/lib/libc/port/gen/perror.c (revision 95682cd0d6fefb989a3cdb7f521a5550d9ab19ac)
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 /*
28  * Copyright 2025 Oxide Computer Company
29  */
30 
31 /*	Copyright (c) 1988 AT&T	*/
32 /*	  All Rights Reserved	*/
33 
34 #include "lint.h"
35 #include "_libc_gettext.h"
36 #include "syserr.h"
37 
38 #include <sys/types.h>
39 #include <errno.h>
40 #include <stdio.h>
41 #include <string.h>
42 #include <unistd.h>
43 
44 /*
45  * Print the error indicated
46  * in the cerror cell.
47  */
48 void
49 perror(const char *s)
50 {
51 	const char *c;
52 	int err = errno;
53 
54 	if (err < _sys_num_nerr && err >= 0)
55 		c = _libc_gettext(&_sys_nerrs[_sys_nindex[err]]);
56 	else
57 		c = _libc_gettext("Unknown error");
58 
59 	if (s && *s) {
60 		(void) write(2, s, strlen(s));
61 		(void) write(2, ": ", 2);
62 	}
63 	(void) write(2, c, strlen(c));
64 	(void) write(2, "\n", 1);
65 }
66