#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 1.3.2.1 2001/11/02 17:45:31 gson 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_STRERRORint __strerror_unneeded__;#else#ifdef USE_SYSERROR_LISTextern int sys_nerr;extern char *sys_errlist[];#endifconst char *isc_strerror(int num) {#define	UPREFIX	"Unknown error: "	static char ebuf[40] = UPREFIX;		/* 64-bit number + slop */	u_int errnum;	char *p, *t;	const char *ret;	char tmp[40];	errnum = num;				/* convert to unsigned */#ifdef USE_SYSERROR_LIST	if (errnum < 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*/