/* vi: set sw=4 ts=4: *//* * Mini tty implementation for busybox * * Copyright (C) 2000  Edward Betts <edward@debian.org>. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include <sys/types.h>#include "busybox.h"extern int tty_main(int argc, char **argv){	char *tty;	if (argc > 1) {		if (argv[1][0] != '-' || argv[1][1] != 's')			show_usage();	} else {		tty = ttyname(0);		if (tty)			puts(tty);		else			puts("not a tty");	}	return(isatty(0) ? EXIT_SUCCESS : EXIT_FAILURE);}