source: MondoRescue/branches/2.2.5/mindi-busybox/console-tools/chvt.c@ 1765

/* vi: set sw=4 ts=4: */
/*
 * Mini chvt implementation for busybox
 *
 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

/* From <linux/vt.h> */
enum {
    VT_ACTIVATE = 0x5606,   /* make vt active */
    VT_WAITACTIVE = 0x5607  /* wait for vt active */
};

int chvt_main(int argc, char **argv);
int chvt_main(int argc, char **argv)
{
    int fd, num;

    if (argc != 2) {
        bb_show_usage();
    }

    fd = get_console_fd();
    num = xatou_range(argv[1], 1, 63);
    /* double cast suppresses "cast to ptr from int of different size */
    xioctl(fd, VT_ACTIVATE, (void *)(ptrdiff_t)num);
    xioctl(fd, VT_WAITACTIVE, (void *)(ptrdiff_t)num);
    return EXIT_SUCCESS;
}