#include <u.h>#include <libc.h>#include <auth.h>#include "authsrv.h" voiderror(char *fmt, ...){	char buf[8192], *s; 	s = buf;	s += sprint(s, "%s: ", argv0);	s = doprint(s, buf + sizeof(buf) / sizeof(*buf), fmt, &fmt + 1);	*s++ = '\n';	write(2, buf, s - buf);	exits(buf);}