NetBSD/lib/libc/string/__strerror.c

98 lines
3.1 KiB
C

/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
/*static char *sccsid = "from: @(#)strerror.c 5.6 (Berkeley) 5/4/91";*/
static char *rcsid = "$Id: __strerror.c,v 1.9 1997/01/23 14:02:21 mrg Exp $";
#endif /* LIBC_SCCS and not lint */
#ifdef NLS
#define catclose _catclose
#define catgets _catgets
#define catopen _catopen
#include <limits.h>
#include <nl_types.h>
#endif
#define sys_errlist _sys_errlist
#define sys_nerr _sys_nerr
#include <errno.h>
#include <stdio.h>
#include <string.h>
/*
* Since perror() is not allowed to change the contents of strerror()'s
* static buffer, both functions supply their own buffers to the
* internal function __strerror().
*/
char *
__strerror(num, buf, buflen)
int num;
char *buf;
int buflen;
{
#define UPREFIX "Unknown error: %u"
register unsigned int errnum;
#ifdef NLS
nl_catd catd ;
catd = catopen("libc", 0);
#endif
errnum = num; /* convert to unsigned */
if (errnum < sys_nerr) {
#ifdef NLS
strncpy(buf, catgets(catd, 1, errnum,
(char *)sys_errlist[errnum]), NL_TEXTMAX);
buf[NL_TEXTMAX - 1] = '\0';
#else
return(sys_errlist[errnum]);
#endif
} else {
#ifdef NLS
snprintf(buf, NL_TEXTMAX,
catgets(catd, 1, 0xffff, UPREFIX), errnum);
#else
snprintf(buf, buflen, UPREFIX, errnum);
#endif
}
#ifdef NLS
catclose(catd);
#endif
return buf;
}