^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ebcdic keycode functions for s390 console drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * S390 version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright IBM Corp. 2003
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/sysrq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/consolemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kbd_kern.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kbd_diacr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "keyboard.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Handler Tables.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define K_HANDLERS\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) k_self, k_fn, k_spec, k_ignore,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) k_dead, k_ignore, k_ignore, k_ignore,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) k_ignore, k_ignore, k_ignore, k_ignore,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) k_ignore, k_ignore, k_ignore, k_ignore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) typedef void (k_handler_fn)(struct kbd_data *, unsigned char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static k_handler_fn K_HANDLERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static k_handler_fn *k_handler[16] = { K_HANDLERS };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* maximum values each key_handler can handle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const int kbd_max_vals[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 255, ARRAY_SIZE(func_table) - 1, NR_FN_HANDLER - 1, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) NR_DEAD - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static const int KBD_NR_TYPES = ARRAY_SIZE(kbd_max_vals);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static const unsigned char ret_diacr[NR_DEAD] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) '`', /* dead_grave */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) '\'', /* dead_acute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) '^', /* dead_circumflex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) '~', /* dead_tilda */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) '"', /* dead_diaeresis */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ',', /* dead_cedilla */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) '_', /* dead_macron */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 'U', /* dead_breve */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) '.', /* dead_abovedot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) '*', /* dead_abovering */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) '=', /* dead_doubleacute */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 'c', /* dead_caron */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 'k', /* dead_ogonek */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 'i', /* dead_iota */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) '#', /* dead_voiced_sound */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 'o', /* dead_semivoiced_sound */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) '!', /* dead_belowdot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) '?', /* dead_hook */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) '+', /* dead_horn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) '-', /* dead_stroke */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) ')', /* dead_abovecomma */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) '(', /* dead_abovereversedcomma */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ':', /* dead_doublegrave */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 'n', /* dead_invertedbreve */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ';', /* dead_belowcomma */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) '$', /* dead_currency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) '@', /* dead_greek */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * Alloc/free of kbd_data structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct kbd_data *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) kbd_alloc(void) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct kbd_data *kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) kbd = kzalloc(sizeof(struct kbd_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (!kbd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) kbd->key_maps = kzalloc(sizeof(ebc_key_maps), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (!kbd->key_maps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) goto out_kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) for (i = 0; i < ARRAY_SIZE(ebc_key_maps); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (ebc_key_maps[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) kbd->key_maps[i] = kmemdup(ebc_key_maps[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) sizeof(u_short) * NR_KEYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (!kbd->key_maps[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) goto out_maps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) kbd->func_table = kzalloc(sizeof(ebc_func_table), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (!kbd->func_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) goto out_maps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) for (i = 0; i < ARRAY_SIZE(ebc_func_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (ebc_func_table[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) kbd->func_table[i] = kstrdup(ebc_func_table[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (!kbd->func_table[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) goto out_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) kbd->fn_handler =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) kcalloc(NR_FN_HANDLER, sizeof(fn_handler_fn *), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (!kbd->fn_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) goto out_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) kbd->accent_table = kmemdup(ebc_accent_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) sizeof(struct kbdiacruc) * MAX_DIACR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (!kbd->accent_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) goto out_fn_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) kbd->accent_table_size = ebc_accent_table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) out_fn_handler:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) kfree(kbd->fn_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) out_func:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) for (i = 0; i < ARRAY_SIZE(ebc_func_table); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) kfree(kbd->func_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) kfree(kbd->func_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) out_maps:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) for (i = 0; i < ARRAY_SIZE(ebc_key_maps); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) kfree(kbd->key_maps[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) kfree(kbd->key_maps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) out_kbd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) kfree(kbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) kbd_free(struct kbd_data *kbd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) kfree(kbd->accent_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) kfree(kbd->fn_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) for (i = 0; i < ARRAY_SIZE(ebc_func_table); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) kfree(kbd->func_table[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) kfree(kbd->func_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) for (i = 0; i < ARRAY_SIZE(ebc_key_maps); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) kfree(kbd->key_maps[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) kfree(kbd->key_maps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) kfree(kbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Generate ascii -> ebcdic translation table from kbd_data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) kbd_ascebc(struct kbd_data *kbd, unsigned char *ascebc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned short *keymap, keysym;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int i, j, k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) memset(ascebc, 0x40, 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) for (i = 0; i < ARRAY_SIZE(ebc_key_maps); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) keymap = kbd->key_maps[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (!keymap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) for (j = 0; j < NR_KEYS; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) k = ((i & 1) << 7) + j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) keysym = keymap[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (KTYP(keysym) == (KT_LATIN | 0xf0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) KTYP(keysym) == (KT_LETTER | 0xf0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ascebc[KVAL(keysym)] = k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) else if (KTYP(keysym) == (KT_DEAD | 0xf0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ascebc[ret_diacr[KVAL(keysym)]] = k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Generate ebcdic -> ascii translation table from kbd_data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) kbd_ebcasc(struct kbd_data *kbd, unsigned char *ebcasc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) unsigned short *keymap, keysym;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) int i, j, k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) memset(ebcasc, ' ', 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) for (i = 0; i < ARRAY_SIZE(ebc_key_maps); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) keymap = kbd->key_maps[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (!keymap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) for (j = 0; j < NR_KEYS; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) keysym = keymap[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) k = ((i & 1) << 7) + j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (KTYP(keysym) == (KT_LATIN | 0xf0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) KTYP(keysym) == (KT_LETTER | 0xf0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) ebcasc[k] = KVAL(keysym);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) else if (KTYP(keysym) == (KT_DEAD | 0xf0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) ebcasc[k] = ret_diacr[KVAL(keysym)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * We have a combining character DIACR here, followed by the character CH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * If the combination occurs in the table, return the corresponding value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Otherwise, if CH is a space or equals DIACR, return DIACR.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * Otherwise, conclude that DIACR was not combining after all,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * queue it and return CH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static unsigned int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) handle_diacr(struct kbd_data *kbd, unsigned int ch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int i, d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) d = kbd->diacr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) kbd->diacr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) for (i = 0; i < kbd->accent_table_size; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (kbd->accent_table[i].diacr == d &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) kbd->accent_table[i].base == ch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return kbd->accent_table[i].result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (ch == ' ' || ch == d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) kbd_put_queue(kbd->port, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return ch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * Handle dead key.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) k_dead(struct kbd_data *kbd, unsigned char value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) value = ret_diacr[value];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) kbd->diacr = (kbd->diacr ? handle_diacr(kbd, value) : value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * Normal character handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) k_self(struct kbd_data *kbd, unsigned char value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (kbd->diacr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) value = handle_diacr(kbd, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) kbd_put_queue(kbd->port, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * Special key handlers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) k_ignore(struct kbd_data *kbd, unsigned char value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * Function key handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) k_fn(struct kbd_data *kbd, unsigned char value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (kbd->func_table[value])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) kbd_puts_queue(kbd->port, kbd->func_table[value]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) k_spec(struct kbd_data *kbd, unsigned char value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (value >= NR_FN_HANDLER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (kbd->fn_handler[value])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) kbd->fn_handler[value](kbd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * Put utf8 character to tty flip buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * UTF-8 is defined for words of up to 31 bits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * but we need only 16 bits here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) to_utf8(struct tty_port *port, ushort c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (c < 0x80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) /* 0******* */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) kbd_put_queue(port, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) else if (c < 0x800) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) /* 110***** 10****** */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) kbd_put_queue(port, 0xc0 | (c >> 6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) kbd_put_queue(port, 0x80 | (c & 0x3f));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) /* 1110**** 10****** 10****** */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) kbd_put_queue(port, 0xe0 | (c >> 12));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) kbd_put_queue(port, 0x80 | ((c >> 6) & 0x3f));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) kbd_put_queue(port, 0x80 | (c & 0x3f));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * Process keycode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) kbd_keycode(struct kbd_data *kbd, unsigned int keycode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) unsigned short keysym;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) unsigned char type, value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (!kbd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (keycode >= 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) keysym = kbd->key_maps[5][keycode - 384];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) else if (keycode >= 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) keysym = kbd->key_maps[4][keycode - 256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) else if (keycode >= 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) keysym = kbd->key_maps[1][keycode - 128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) keysym = kbd->key_maps[0][keycode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) type = KTYP(keysym);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (type >= 0xf0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) type -= 0xf0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (type == KT_LETTER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) type = KT_LATIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) value = KVAL(keysym);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (kbd->sysrq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (kbd->sysrq == K(KT_LATIN, '-')) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) kbd->sysrq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) handle_sysrq(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (value == '-') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) kbd->sysrq = K(KT_LATIN, '-');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) /* Incomplete sysrq sequence. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) (*k_handler[KTYP(kbd->sysrq)])(kbd, KVAL(kbd->sysrq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) kbd->sysrq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) } else if ((type == KT_LATIN && value == '^') ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) (type == KT_DEAD && ret_diacr[value] == '^')) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) kbd->sysrq = K(type, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) (*k_handler[type])(kbd, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) to_utf8(kbd->port, keysym);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * Ioctl stuff.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) do_kdsk_ioctl(struct kbd_data *kbd, struct kbentry __user *user_kbe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) int cmd, int perm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct kbentry tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) unsigned long kb_index, kb_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ushort *key_map, val, ov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) kb_index = (unsigned long) tmp.kb_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) #if NR_KEYS < 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (kb_index >= NR_KEYS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) kb_table = (unsigned long) tmp.kb_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) #if MAX_NR_KEYMAPS < 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (kb_table >= MAX_NR_KEYMAPS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) kb_table = array_index_nospec(kb_table , MAX_NR_KEYMAPS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) case KDGKBENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) key_map = kbd->key_maps[kb_table];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (key_map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) val = U(key_map[kb_index]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (KTYP(val) >= KBD_NR_TYPES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) val = K_HOLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) val = (kb_index ? K_HOLE : K_NOSUCHMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return put_user(val, &user_kbe->kb_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) case KDSKBENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (!perm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!kb_index && tmp.kb_value == K_NOSUCHMAP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* disallocate map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) key_map = kbd->key_maps[kb_table];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (key_map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) kbd->key_maps[kb_table] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) kfree(key_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (KTYP(tmp.kb_value) >= KBD_NR_TYPES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (KVAL(tmp.kb_value) > kbd_max_vals[KTYP(tmp.kb_value)])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (!(key_map = kbd->key_maps[kb_table])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) key_map = kmalloc(sizeof(plain_map),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (!key_map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) kbd->key_maps[kb_table] = key_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) for (j = 0; j < NR_KEYS; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) key_map[j] = U(K_HOLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ov = U(key_map[kb_index]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (tmp.kb_value == ov)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) break; /* nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * Attention Key.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (((ov == K_SAK) || (tmp.kb_value == K_SAK)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) !capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) key_map[kb_index] = U(tmp.kb_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) do_kdgkb_ioctl(struct kbd_data *kbd, struct kbsentry __user *u_kbs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) int cmd, int perm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) unsigned char kb_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /* Get u_kbs->kb_func. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (get_user(kb_func, &u_kbs->kb_func))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) #if MAX_NR_FUNC < 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (kb_func >= MAX_NR_FUNC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) case KDGKBSENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) p = kbd->func_table[kb_func];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) len = strlen(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (len >= sizeof(u_kbs->kb_string))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) len = sizeof(u_kbs->kb_string) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (copy_to_user(u_kbs->kb_string, p, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (put_user('\0', u_kbs->kb_string + len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) case KDSKBSENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (!perm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) p = strndup_user(u_kbs->kb_string, sizeof(u_kbs->kb_string));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (IS_ERR(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return PTR_ERR(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) kfree(kbd->func_table[kb_func]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) kbd->func_table[kb_func] = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) int kbd_ioctl(struct kbd_data *kbd, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) struct tty_struct *tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) void __user *argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) unsigned int ct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) int perm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) argp = (void __user *)arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * To have permissions to do most of the vt ioctls, we either have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) tty = tty_port_tty_get(kbd->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) /* FIXME this test is pretty racy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) perm = current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) tty_kref_put(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) case KDGKBTYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return put_user(KB_101, (char __user *)argp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) case KDGKBENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) case KDSKBENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return do_kdsk_ioctl(kbd, argp, cmd, perm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) case KDGKBSENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) case KDSKBSENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return do_kdgkb_ioctl(kbd, argp, cmd, perm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) case KDGKBDIACR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct kbdiacrs __user *a = argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct kbdiacr diacr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (put_user(kbd->accent_table_size, &a->kb_cnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) for (i = 0; i < kbd->accent_table_size; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) diacr.diacr = kbd->accent_table[i].diacr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) diacr.base = kbd->accent_table[i].base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) diacr.result = kbd->accent_table[i].result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (copy_to_user(a->kbdiacr + i, &diacr, sizeof(struct kbdiacr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) case KDGKBDIACRUC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct kbdiacrsuc __user *a = argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) ct = kbd->accent_table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (put_user(ct, &a->kb_cnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (copy_to_user(a->kbdiacruc, kbd->accent_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ct * sizeof(struct kbdiacruc)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) case KDSKBDIACR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) struct kbdiacrs __user *a = argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct kbdiacr diacr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (!perm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (get_user(ct, &a->kb_cnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) if (ct >= MAX_DIACR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) kbd->accent_table_size = ct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) for (i = 0; i < ct; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (copy_from_user(&diacr, a->kbdiacr + i, sizeof(struct kbdiacr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) kbd->accent_table[i].diacr = diacr.diacr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) kbd->accent_table[i].base = diacr.base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) kbd->accent_table[i].result = diacr.result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) case KDSKBDIACRUC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) struct kbdiacrsuc __user *a = argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (!perm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (get_user(ct, &a->kb_cnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) if (ct >= MAX_DIACR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) kbd->accent_table_size = ct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if (copy_from_user(kbd->accent_table, a->kbdiacruc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) ct * sizeof(struct kbdiacruc)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) EXPORT_SYMBOL(kbd_ioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) EXPORT_SYMBOL(kbd_ascebc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) EXPORT_SYMBOL(kbd_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) EXPORT_SYMBOL(kbd_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) EXPORT_SYMBOL(kbd_keycode);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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