72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* setkeycodes
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*
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* Copyright (C) 1994-1998 Andries E. Brouwer <aeb@cwi.nl>
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*
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* Adjusted for BusyBox by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config SETKEYCODES
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//config: bool "setkeycodes (1.7 kb)"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: This program loads entries into the kernel's scancode-to-keycode
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//config: map, allowing unusual keyboards to generate usable keycodes.
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//applet:IF_SETKEYCODES(APPLET_NOEXEC(setkeycodes, setkeycodes, BB_DIR_USR_BIN, BB_SUID_DROP, setkeycodes))
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//kbuild:lib-$(CONFIG_SETKEYCODES) += setkeycodes.o
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//usage:#define setkeycodes_trivial_usage
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//usage: "{ SCANCODE KEYCODE }..."
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//usage:#define setkeycodes_full_usage "\n\n"
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//usage: "Modify kernel's scancode-to-keycode map,\n"
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//usage: "allowing unusual keyboards to generate usable keycodes.\n\n"
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//usage: "SCANCODE is either xx or e0xx (hexadecimal), KEYCODE is decimal."
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//usage:
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//usage:#define setkeycodes_example_usage
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//usage: "$ setkeycodes e030 127\n"
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#include "libbb.h"
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/* From <linux/kd.h> */
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struct kbkeycode {
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unsigned scancode, keycode;
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};
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enum {
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KDSETKEYCODE = 0x4B4D /* write kernel keycode table entry */
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};
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int setkeycodes_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int setkeycodes_main(int argc, char **argv)
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{
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int fd;
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if (!(argc & 1) /* if even */ || argc < 2) {
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bb_show_usage();
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}
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fd = get_console_fd_or_die();
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while (argv[1]) {
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struct kbkeycode a;
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int sc;
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sc = xstrtoul_range(argv[1], 16, 0, 0xe07f);
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if (sc >= 0xe000) {
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sc -= 0xe000;
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sc += 0x0080;
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}
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a.scancode = sc;
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a.keycode = xatou_range(argv[2], 0, 255);
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ioctl_or_perror_and_die(fd, KDSETKEYCODE, &a,
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"can't set SCANCODE %x to KEYCODE %d",
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sc, a.keycode);
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argv += 2;
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}
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return EXIT_SUCCESS;
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}
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