/*  * 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>#include <bio.h>#include "authcmdlib.h" voiderror(char *fmt, ...){	char buf[8192], *s;	va_list arg; 	s = buf;	s += snprint(s, sizeof buf, "%s: ", argv0);	va_start(arg, fmt);	s = vseprint(s, buf + sizeof(buf), fmt, arg);	va_end(arg);	*s++ = '\n';	write(2, buf, s - buf);	exits(buf);}