/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>  static void_sysfatalimpl(char *fmt, va_list arg){	char buf[1024]; 	vseprint(buf, buf+sizeof(buf), fmt, arg);	if(argv0)		fprint(2, "%s: %s\n", argv0, buf);	else		fprint(2, "%s\n", buf);	exits(buf);} void (*_sysfatal)(char *fmt, va_list arg) = _sysfatalimpl; voidsysfatal(char *fmt, ...){	va_list arg; 	va_start(arg, fmt);	(*_sysfatal)(fmt, arg);	va_end(arg);}