xref: /netbsd/lib/libc/string/strerror_ss.c (revision c7416993)
1 /*	$NetBSD: strerror_ss.c,v 1.2 2017/01/12 00:43:55 christos Exp $	*/
2 
3 /*-
4  * Copyright (c) 2017 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Christos Zoulas.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: strerror_ss.c,v 1.2 2017/01/12 00:43:55 christos Exp $");
33 
34 #include "namespace.h"
35 
36 #include <errno.h>
37 #include <stdio.h>
38 #include <string.h>
39 
40 #include "extern.h"
41 
42 #ifdef __weak_alias
__weak_alias(strerror_r_ss,_strerror_r_ss)43 __weak_alias(strerror_r_ss,_strerror_r_ss)
44 #endif
45 
46 int
47 strerror_r_ss(int num, char *buf, size_t len)
48 {
49 	if (num >= 0 || num < sys_nerr)
50 		strlcpy(buf, sys_errlist[num], len);
51 	else
52 		snprintf_ss(buf, len, "Unknown error %d", num);
53 	return 0;
54 }
55 
56 __aconst char *
strerror_ss(int num)57 strerror_ss(int num)
58 {
59 	static char buf[64];
60 
61 	strerror_r_ss(num, buf, sizeof(buf));
62 	return buf;
63 }
64