minix/commands/loadkeys/loadkeys.c
David van Moolenbroek 6b3f4dc157 Input infrastructure, INPUT server, PCKBD driver
This commit separates the low-level keyboard driver from TTY, putting
it in a separate driver (PCKBD). The commit also separates management
of raw input devices from TTY, and puts it in a separate server
(INPUT). All keyboard and mouse input from hardware is sent by drivers
to the INPUT server, which either sends it to a process that has
opened a raw input device, or otherwise forwards it to TTY for
standard processing.

Design by Dirk Vogt. Prototype by Uli Kastlunger.

Additional changes made to the prototype:

- the event communication is now based on USB HID codes; all input
  drivers have to use USB codes to describe events;
- all TTY keymaps have been converted to USB format, with the effect
  that a single keymap covers all keys; there is no (static) escaped
  keymap anymore;
- further keymap tweaks now allow remapping of literally all keys;
- input device renumbering and protocol rewrite;
- INPUT server rewrite, with added support for cancel and select;
- PCKBD reimplementation, including PC/AT-to-USB translation;
- support for manipulating keyboard LEDs has been added;
- keyboard and mouse multiplexer devices have been added to INPUT,
  primarily so that an X server need only open two devices;
- a new "libinputdriver" library abstracts away protocol details from
  input drivers, and should be used by all future input drivers;
- both INPUT and PCKBD can be restarted;
- TTY is now scheduled by KERNEL, so that it won't be punished for
  running a lot; without this, simply running "yes" on the console
  kills the system;
- the KIOCBELL IOCTL has been moved to /dev/console;
- support for the SCANCODES termios setting has been removed;
- obsolete keymap compression has been removed;
- the obsolete Olivetti M24 keymap has been removed.

Change-Id: I3a672fb8c4fd566734e4b46d3994b4b7fc96d578
2014-03-01 09:04:55 +01:00

56 lines
1.1 KiB
C

/* loadkeys - load national keyboard map Author: Marcus Hampel
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <minix/keymap.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#define KBD_DEVICE "/dev/console"
void fatal(char *say)
{
fprintf(stderr, "loadkeys: %s: %s\n", say, strerror(errno));
exit(EXIT_FAILURE);
}
void usage(void)
{
fprintf(stderr, "usage: loadkeys <mapfile>\n");
exit(EXIT_FAILURE);
}
int main(int argc, char *argv[])
{
char sig[4];
keymap_t keymap;
int fd;
if (argc != 2)
usage();
if ((fd = open(argv[1], O_RDONLY)) < 0) fatal(argv[1]);
if (read(fd, sig, sizeof(sig)) < sizeof(sig)) fatal(argv[1]);
if (memcmp(sig, KEY_MAGIC, sizeof(sig)) != 0) {
fprintf(stderr, "loadkeys: %s: not a keymap file\n", argv[1]);
return EXIT_FAILURE;
}
if (read(fd, keymap, sizeof(keymap)) < sizeof(keymap)) fatal(argv[1]);
close(fd);
if ((fd = open(KBD_DEVICE, O_WRONLY)) < 0) fatal(KBD_DEVICE);
if (ioctl(fd, KIOCSMAP, keymap) < 0) fatal(KBD_DEVICE);
return EXIT_SUCCESS;
}