1/* vi: set sw=4 ts=4: */
2/*
3 * Mini tty implementation for busybox
4 *
5 * Copyright (C) 2000  Edward Betts <edward@debian.org>.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <unistd.h>
26#include <sys/types.h>
27#include "busybox.h"
28
29extern int tty_main(int argc, char **argv)
30{
31	char *tty;
32
33	if (argc > 1) {
34		if (argv[1][0] != '-' || argv[1][1] != 's')
35			show_usage();
36	} else {
37		tty = ttyname(0);
38		if (tty)
39			puts(tty);
40		else
41			puts("not a tty");
42	}
43	return(isatty(0) ? EXIT_SUCCESS : EXIT_FAILURE);
44}
45