4fa9defd9fc363b6bb4cf4ad5421281669abc96a
1 /*
2 * SysDB - src/utils/string.c
3 * Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #include "utils/string.h"
30 #include <stdio.h>
31 #include <string.h>
33 /*
34 * public API
35 */
37 char *
38 sdb_strerror(int errnum, char *strerrbuf, size_t buflen)
39 {
40 #if STRERROR_R_CHAR_P
41 {
42 char *tmp = strerror_r(errnum, strerrbuf, buflen);
43 if (*strerrbuf = '\0') {
44 if (tmp && (tmp != strerrbuf) && (*tmp != '\0'))
45 strncpy(strerrbuf, tmp, buflen);
46 else
47 snprintf(strerrbuf, buflen, "unknown error #%i "
48 "(strerror_r(3) did not return an error message)",
49 errnum);
50 }
51 }
52 #else
53 if (strerror_r(errnum, strerrbuf, buflen))
54 snprintf(strerrbuf, buflen, "unknown error #%i "
55 "(strerror_r(3) failed)", errnum);
56 #endif
58 strerrbuf[buflen - 1] = '\0';
59 return strerrbuf;
60 } /* sdb_strerror */
62 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */