diff options
Diffstat (limited to 'console-tools/loadkmap.c')
-rw-r--r-- | console-tools/loadkmap.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/console-tools/loadkmap.c b/console-tools/loadkmap.c new file mode 100644 index 0000000..ac2c0a6 --- /dev/null +++ b/console-tools/loadkmap.c @@ -0,0 +1,65 @@ +/* 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 UNUSED_PARAM) +{ + 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); + +/* bb_warn_ignoring_args(argc >= 2); */ + fd = get_console_fd_or_die(); +/* or maybe: + opt = getopt32(argv, "C:", &tty_name); + fd = xopen(tty_name, O_NONBLOCK); +*/ + + 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; +} |