ref: e0d2453f56ac602e3d70e55cb2ff06a39f6ca20a
dir: /sys/src/cmd/auth/lib/error.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <authsrv.h>
#include "authcmdlib.h"
void
error(char *fmt, ...)
{
char buf[8192], *s;
va_list arg;
s = buf;
s += sprint(s, "%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);
}