mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Disallocate virtual terminal(s)
|
|
*
|
|
* Copyright (C) 2003 by Tito Ragusa <farmatito@tiscali.it>
|
|
* Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.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
|
|
*/
|
|
|
|
/* no options, no getopt */
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include "busybox.h"
|
|
|
|
/* From <linux/vt.h> */
|
|
static const int VT_DISALLOCATE = 0x5608; /* free memory associated to vt */
|
|
|
|
int deallocvt_main(int argc, char *argv[])
|
|
{
|
|
/* num = 0 deallocate all unused consoles */
|
|
int num = 0;
|
|
|
|
switch(argc)
|
|
{
|
|
case 2:
|
|
if((num = bb_xgetlarg(argv[1], 10, 0, INT_MAX)) == 0)
|
|
bb_error_msg_and_die("0: illegal VT number");
|
|
/* Falltrough */
|
|
case 1:
|
|
break;
|
|
default:
|
|
bb_show_usage();
|
|
}
|
|
|
|
if (ioctl( get_console_fd(), VT_DISALLOCATE, num )) {
|
|
bb_perror_msg_and_die("VT_DISALLOCATE");
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|