[821] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * Disallocate virtual terminal(s)
|
---|
| 4 | *
|
---|
| 5 | * Copyright (C) 2003 by Tito Ragusa <farmatito@tiscali.it>
|
---|
| 6 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
---|
| 7 | *
|
---|
| 8 | * This program is free software; you can redistribute it and/or modify
|
---|
| 9 | * it under the terms of the GNU General Public License as published by
|
---|
| 10 | * the Free Software Foundation; either version 2 of the License, or
|
---|
| 11 | * (at your option) any later version.
|
---|
| 12 | *
|
---|
| 13 | * This program is distributed in the hope that it will be useful,
|
---|
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 16 | * GNU General Public License for more details.
|
---|
| 17 | *
|
---|
| 18 | * You should have received a copy of the GNU General Public License
|
---|
| 19 | * along with this program; if not, write to the Free Software
|
---|
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
---|
| 21 | */
|
---|
| 22 |
|
---|
| 23 | /* no options, no getopt */
|
---|
| 24 |
|
---|
| 25 | #include <stdlib.h>
|
---|
| 26 | #include <stdio.h>
|
---|
| 27 | #include <fcntl.h>
|
---|
| 28 | #include <sys/types.h>
|
---|
| 29 | #include <sys/ioctl.h>
|
---|
| 30 | #include "busybox.h"
|
---|
| 31 |
|
---|
| 32 | /* From <linux/vt.h> */
|
---|
| 33 | enum { VT_DISALLOCATE = 0x5608 }; /* free memory associated to vt */
|
---|
| 34 |
|
---|
| 35 | int deallocvt_main(int argc, char *argv[])
|
---|
| 36 | {
|
---|
| 37 | /* num = 0 deallocate all unused consoles */
|
---|
| 38 | int num = 0;
|
---|
| 39 |
|
---|
| 40 | switch (argc) {
|
---|
| 41 | case 2:
|
---|
| 42 | if ((num = bb_xgetlarg(argv[1], 10, 0, INT_MAX)) == 0) {
|
---|
| 43 | bb_error_msg_and_die("0: illegal VT number");
|
---|
| 44 | }
|
---|
| 45 | /* Fallthrough */
|
---|
| 46 | case 1:
|
---|
| 47 | break;
|
---|
| 48 | default:
|
---|
| 49 | bb_show_usage();
|
---|
| 50 | }
|
---|
| 51 |
|
---|
| 52 | if (-1 == ioctl(get_console_fd(), VT_DISALLOCATE, num)) {
|
---|
| 53 | bb_perror_msg_and_die("VT_DISALLOCATE");
|
---|
| 54 | }
|
---|
| 55 | return EXIT_SUCCESS;
|
---|
| 56 | }
|
---|