2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)strerror.c 8.1 (Berkeley) 6/4/93
30 * $FreeBSD: src/lib/libc/string/strerror.c,v 1.16 2007/01/09 00:28:12 imp Exp $
31 * $DragonFly: src/lib/libc/string/strerror.c,v 1.2 2003/06/17 04:26:46 dillon Exp $
43 #define UPREFIX "Unknown error"
46 * Define a buffer size big enough to describe a 64-bit signed integer
47 * converted to ASCII decimal (19 bytes), with an optional leading sign
48 * (1 byte); finally, we get the prefix, delimiter (": ") and a trailing
51 #define EBUFSIZE (20 + 2 + sizeof(UPREFIX))
54 * Doing this by hand instead of linking with stdio(3) avoids bloat for
55 * statically linked binaries.
58 errstr(int num, char *uprefix, char *buf, size_t len)
64 t = tmp + sizeof(tmp);
66 uerr = (num >= 0) ? num : -num;
68 *--t = "0123456789"[uerr % 10];
74 strlcpy(buf, uprefix, len);
79 strerror_r(int errnum, char *strerrbuf, size_t buflen)
83 int saved_errno = errno;
85 catd = catopen("libc", NL_CAT_LOCALE);
88 if (errnum < 1 || errnum >= sys_nerr) {
91 catgets(catd, 1, 0xffff, UPREFIX),
98 if (strlcpy(strerrbuf,
100 catgets(catd, 1, errnum, sys_errlist[errnum]),
119 static char ebuf[NL_TEXTMAX];
121 if (strerror_r(num, ebuf, sizeof(ebuf)) != 0)