#if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93";
static const char rcsid[] = "$Id: strerror.c,v 1.6 2008/02/18 03:49:08 marka Exp $";
#endif /* LIBC_SCCS and not lint */
/*
* Copyright (c) 1988, 1993
* The 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.
*/
#include "port_before.h"
#include <sys/param.h>
#include <sys/types.h>
#include <string.h>
#include "port_after.h"
#ifndef NEED_STRERROR
int __strerror_unneeded__;
#else
#ifdef USE_SYSERROR_LIST
extern int sys_nerr;
extern char *sys_errlist[];
#endif
const char *
isc_strerror(int num) {
#define UPREFIX "Unknown error: "
static char ebuf[40] = UPREFIX; /*%< 64-bit number + slop */
u_int errnum;
char *p, *t;
#ifndef USE_SYSERROR_LIST
const char *ret;
#endif
char tmp[40];
errnum = num; /*%< convert to unsigned */
#ifdef USE_SYSERROR_LIST
if (errnum < (u_int)sys_nerr)
return (sys_errlist[errnum]);
#else
#undef strerror
ret = strerror(num); /*%< call strerror() in libc */
if (ret != NULL)
return(ret);
#endif
/* Do this by hand, so we don't include stdio(3). */
t = tmp;
do {
*t++ = "0123456789"[errnum % 10];
} while (errnum /= 10);
for (p = ebuf + sizeof(UPREFIX) - 1;;) {
*p++ = *--t;
if (t <= tmp)
break;
}
return (ebuf);
}
#endif /*NEED_STRERROR*/
/*! \file */