1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) 1994-1998 Andries E. Brouwer <aeb@cwi.nl>
7 * Adjusted for BusyBox by Erik Andersen <andersen@codepoet.org>
9 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
11 //config:config SETKEYCODES
12 //config: bool "setkeycodes (1.7 kb)"
14 //config: select PLATFORM_LINUX
16 //config: This program loads entries into the kernel's scancode-to-keycode
17 //config: map, allowing unusual keyboards to generate usable keycodes.
19 //applet:IF_SETKEYCODES(APPLET_NOEXEC(setkeycodes, setkeycodes, BB_DIR_USR_BIN, BB_SUID_DROP, setkeycodes))
21 //kbuild:lib-$(CONFIG_SETKEYCODES) += setkeycodes.o
23 //usage:#define setkeycodes_trivial_usage
24 //usage: "{ SCANCODE KEYCODE }..."
25 //usage:#define setkeycodes_full_usage "\n\n"
26 //usage: "Modify kernel's scancode-to-keycode map,\n"
27 //usage: "allowing unusual keyboards to generate usable keycodes.\n\n"
28 //usage: "SCANCODE is either xx or e0xx (hexadecimal), KEYCODE is decimal."
30 //usage:#define setkeycodes_example_usage
31 //usage: "$ setkeycodes e030 127\n"
35 /* From <linux/kd.h> */
37 unsigned scancode, keycode;
40 KDSETKEYCODE = 0x4B4D /* write kernel keycode table entry */
43 int setkeycodes_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
44 int setkeycodes_main(int argc, char **argv)
48 if (!(argc & 1) /* if even */ || argc < 2) {
52 fd = get_console_fd_or_die();
58 sc = xstrtoul_range(argv[1], 16, 0, 0xe07f);
64 a.keycode = xatou_range(argv[2], 0, 255);
65 ioctl_or_perror_and_die(fd, KDSETKEYCODE, &a,
66 "can't set SCANCODE %x to KEYCODE %d",