/* vi: set sw=4 ts=4: */ /* * Mini loadkmap implementation for busybox * * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ #include "libbb.h" #define BINARY_KEYMAP_MAGIC "bkeymap" /* From <linux/kd.h> */ struct kbentry { unsigned char kb_table; unsigned char kb_index; unsigned short kb_value; }; /* sets one entry in translation table */ #define KDSKBENT 0x4B47 /* From <linux/keyboard.h> */ #define NR_KEYS 128 #define MAX_NR_KEYMAPS 256 int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int loadkmap_main(int argc UNUSED_PARAM, char **argv) { struct kbentry ke; int i, j, fd; uint16_t ibuff[NR_KEYS]; /* const char *tty_name = CURRENT_TTY; */ RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS); /* When user accidentally runs "loadkmap FILE" * instead of "loadkmap <FILE", we end up waiting for input from tty. * Let's prevent it: */ if (argv[1]) bb_show_usage(); /* bb_warn_ignoring_args(argv[1]); */ fd = get_console_fd_or_die(); /* or maybe: opt = getopt32(argv, "C:", &tty_name); fd = xopen_nonblocking(tty_name); */ xread(STDIN_FILENO, flags, 7); if (strncmp(flags, BINARY_KEYMAP_MAGIC, 7)) bb_error_msg_and_die("not a valid binary keymap"); xread(STDIN_FILENO, flags, MAX_NR_KEYMAPS); for (i = 0; i < MAX_NR_KEYMAPS; i++) { if (flags[i] == 1) { xread(STDIN_FILENO, ibuff, NR_KEYS * sizeof(uint16_t)); for (j = 0; j < NR_KEYS; j++) { ke.kb_index = j; ke.kb_table = i; ke.kb_value = ibuff[j]; ioctl(fd, KDSKBENT, &ke); } } } if (ENABLE_FEATURE_CLEAN_UP) { close(fd); RELEASE_CONFIG_BUFFER(flags); } return EXIT_SUCCESS; }