source: MondoRescue/branches/2.2.8.selinux/mindi-busybox/console-tools/setkeycodes.c@ 3774

/* vi: set sw=4 ts=4: */
/*
 * setkeycodes
 *
 * Copyright (C) 1994-1998 Andries E. Brouwer <aeb@cwi.nl>
 *
 * Adjusted for BusyBox by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

//#include <sys/ioctl.h>
#include "libbb.h"

/* From <linux/kd.h> */
struct kbkeycode {
    unsigned int scancode, keycode;
};
enum {
    KDSETKEYCODE = 0x4B4D  /* write kernel keycode table entry */
};

int setkeycodes_main(int argc, char** argv);
int setkeycodes_main(int argc, char** argv)
{
    int fd, sc;
    struct kbkeycode a;

    if (argc % 2 != 1 || argc < 2) {
        bb_show_usage();
    }

    fd = get_console_fd();

    while (argc > 2) {
        a.keycode = xatoul_range(argv[2], 0, 127);
        a.scancode = sc = xstrtoul_range(argv[1], 16, 0, 255);
        if (a.scancode > 127) {
            a.scancode -= 0xe000;
            a.scancode += 128;
        }
        ioctl_or_perror_and_die(fd, KDSETKEYCODE, &a,
            "failed to set SCANCODE %x to KEYCODE %d",
            sc, a.keycode);
        argc -= 2;
        argv += 2;
    }
    return EXIT_SUCCESS;
}