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-rw-r--r--busybox/console-tools/chvt.c61
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1/* vi: set sw=4 ts=4: */
2/*
3 * Mini chvt implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.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
15 * GNU 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/* no options, no getopt */
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <fcntl.h>
27#include <sys/types.h>
28#include <sys/ioctl.h>
29#include "busybox.h"
30
31/* From <linux/vt.h> */
32static const int VT_ACTIVATE = 0x5606; /* make vt active */
33static const int VT_WAITACTIVE = 0x5607; /* wait for vt active */
34
35int chvt_main(int argc, char **argv)
36{
37 int fd, num;
38
39 if (argc != 2) {
40 bb_show_usage();
41 }
42
43 fd = get_console_fd();
44 num = bb_xgetlarg(argv[1], 10, 0, INT_MAX);
45 if (ioctl(fd, VT_ACTIVATE, num)) {
46 bb_perror_msg_and_die("VT_ACTIVATE");
47 }
48 if (ioctl(fd, VT_WAITACTIVE, num)) {
49 bb_perror_msg_and_die("VT_WAITACTIVE");
50 }
51 return EXIT_SUCCESS;
52}
53
54
55/*
56Local Variables:
57c-file-style: "linux"
58c-basic-offset: 4
59tab-width: 4
60End:
61*/