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[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini loadkmap implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
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| 6 | *
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[1765] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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[821] | 8 | *
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| 9 | */
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| 10 |
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[1765] | 11 | #include "libbb.h"
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[821] | 12 |
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| 13 | #define BINARY_KEYMAP_MAGIC "bkeymap"
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| 14 |
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| 15 | /* From <linux/kd.h> */
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| 16 | struct kbentry {
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| 17 | unsigned char kb_table;
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| 18 | unsigned char kb_index;
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| 19 | unsigned short kb_value;
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| 20 | };
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| 21 | /* sets one entry in translation table */
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| 22 | #define KDSKBENT 0x4B47
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| 23 |
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| 24 | /* From <linux/keyboard.h> */
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| 25 | #define NR_KEYS 128
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| 26 | #define MAX_NR_KEYMAPS 256
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| 27 |
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[1765] | 28 | int loadkmap_main(int argc, char **argv);
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[821] | 29 | int loadkmap_main(int argc, char **argv)
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| 30 | {
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| 31 | struct kbentry ke;
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| 32 | int i, j, fd;
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[1765] | 33 | uint16_t ibuff[NR_KEYS];
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[821] | 34 | char flags[MAX_NR_KEYMAPS];
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| 35 | char buff[7];
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| 36 |
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| 37 | if (argc != 1)
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| 38 | bb_show_usage();
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| 39 |
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[1765] | 40 | fd = xopen(CURRENT_VC, O_RDWR);
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[821] | 41 |
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[1765] | 42 | xread(0, buff, 7);
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| 43 | if (strncmp(buff, BINARY_KEYMAP_MAGIC, 7))
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| 44 | bb_error_msg_and_die("this is not a valid binary keymap");
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[821] | 45 |
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[1765] | 46 | xread(0, flags, MAX_NR_KEYMAPS);
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[821] | 47 |
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| 48 | for (i = 0; i < MAX_NR_KEYMAPS; i++) {
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| 49 | if (flags[i] == 1) {
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[1765] | 50 | xread(0, ibuff, NR_KEYS * sizeof(uint16_t));
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[821] | 51 | for (j = 0; j < NR_KEYS; j++) {
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| 52 | ke.kb_index = j;
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| 53 | ke.kb_table = i;
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| 54 | ke.kb_value = ibuff[j];
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| 55 | ioctl(fd, KDSKBENT, &ke);
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| 56 | }
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| 57 | }
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| 58 | }
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| 59 |
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[1765] | 60 | if (ENABLE_FEATURE_CLEAN_UP) close(fd);
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| 61 | return 0;
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[821] | 62 | }
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