56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini kbd_mode implementation for busybox
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*
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* Copyright (C) 2007 Loic Grenie <loic.grenie@gmail.com>
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* written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from
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* console-utils v0.2.3, licensed under GNU GPLv2
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include <linux/kd.h>
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int kbd_mode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int kbd_mode_main(int argc UNUSED_PARAM, char **argv)
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{
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enum {
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SCANCODE = (1 << 0),
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ASCII = (1 << 1),
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MEDIUMRAW = (1 << 2),
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UNICODE = (1 << 3),
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};
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int fd;
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unsigned opt;
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const char *tty_name = CURRENT_TTY;
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opt = getopt32(argv, "sakuC:", &tty_name);
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fd = xopen(tty_name, O_NONBLOCK);
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opt &= 0xf; /* clear -C bit, see (*) */
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if (!opt) { /* print current setting */
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const char *mode = "unknown";
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int m;
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xioctl(fd, KDGKBMODE, &m);
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if (m == K_RAW)
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mode = "raw (scancode)";
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else if (m == K_XLATE)
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mode = "default (ASCII)";
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else if (m == K_MEDIUMRAW)
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mode = "mediumraw (keycode)";
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else if (m == K_UNICODE)
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mode = "Unicode (UTF-8)";
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printf("The keyboard is in %s mode\n", mode);
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} else {
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/* here we depend on specific bits assigned to options (*) */
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opt = opt & UNICODE ? 3 : opt >> 1;
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/* double cast prevents warnings about widening conversion */
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xioctl(fd, KDSKBMODE, (void*)(ptrdiff_t)opt);
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}
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if (ENABLE_FEATURE_CLEAN_UP)
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close(fd);
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return EXIT_SUCCESS;
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}
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