/*
* Mini kbd_mode implementation for busybox
*
- * Copyright (C) 2007 Loïc Grenié <loic.grenie@gmail.com>
+ * Copyright (C) 2007 Loic Grenie <loic.grenie@gmail.com>
* written using Andries Brouwer <aeb@cwi.nl>'s kbd_mode from
* console-utils v0.2.3, licensed under GNU GPLv2
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- *
*/
-
#include "libbb.h"
#include <linux/kd.h>
int kbd_mode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int kbd_mode_main(int argc UNUSED_PARAM, char **argv)
{
- int fd;
- unsigned opt;
enum {
- SCANCODE = (1<<0),
- ASCII = (1<<1),
- MEDIUMRAW= (1<<2),
- UNICODE = (1<<3)
+ SCANCODE = (1 << 0),
+ ASCII = (1 << 1),
+ MEDIUMRAW = (1 << 2),
+ UNICODE = (1 << 3),
};
- static const char KD_xxx[] ALIGN1 = "saku";
- opt = getopt32(argv, KD_xxx);
- fd = get_console_fd();
-/* if (fd < 0)
- return EXIT_FAILURE;
-*/
+ int fd;
+ unsigned opt;
+ const char *tty_name = CURRENT_TTY;
+
+ opt = getopt32(argv, "sakuC:", &tty_name);
+ fd = xopen(tty_name, O_NONBLOCK);
+ opt &= 0xf; /* clear -C bit, see (*) */
+
if (!opt) { /* print current setting */
const char *mode = "unknown";
int m;
- ioctl(fd, KDGKBMODE, &m);
+ xioctl(fd, KDGKBMODE, &m);
if (m == K_RAW)
mode = "raw (scancode)";
else if (m == K_XLATE)
mode = "Unicode (UTF-8)";
printf("The keyboard is in %s mode\n", mode);
} else {
+ /* here we depend on specific bits assigned to options (*) */
opt = opt & UNICODE ? 3 : opt >> 1;
- xioctl(fd, KDSKBMODE, opt);
+ /* double cast prevents warnings about widening conversion */
+ xioctl(fd, KDSKBMODE, (void*)(ptrdiff_t)opt);
}
if (ENABLE_FEATURE_CLEAN_UP)