Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * ebcdic keycode functions for s390 console drivers |
3 | * | |
4 | * S390 version | |
a53c8fab | 5 | * Copyright IBM Corp. 2003 |
1da177e4 LT |
6 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), |
7 | */ | |
8 | ||
1da177e4 LT |
9 | #include <linux/module.h> |
10 | #include <linux/sched.h> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
1da177e4 LT |
12 | #include <linux/sysrq.h> |
13 | ||
04c71976 | 14 | #include <linux/consolemap.h> |
1da177e4 LT |
15 | #include <linux/kbd_kern.h> |
16 | #include <linux/kbd_diacr.h> | |
17 | #include <asm/uaccess.h> | |
18 | ||
19 | #include "keyboard.h" | |
20 | ||
21 | /* | |
22 | * Handler Tables. | |
23 | */ | |
24 | #define K_HANDLERS\ | |
25 | k_self, k_fn, k_spec, k_ignore,\ | |
26 | k_dead, k_ignore, k_ignore, k_ignore,\ | |
27 | k_ignore, k_ignore, k_ignore, k_ignore,\ | |
28 | k_ignore, k_ignore, k_ignore, k_ignore | |
29 | ||
30 | typedef void (k_handler_fn)(struct kbd_data *, unsigned char); | |
31 | static k_handler_fn K_HANDLERS; | |
32 | static k_handler_fn *k_handler[16] = { K_HANDLERS }; | |
33 | ||
34 | /* maximum values each key_handler can handle */ | |
35 | static const int kbd_max_vals[] = { | |
36 | 255, ARRAY_SIZE(func_table) - 1, NR_FN_HANDLER - 1, 0, | |
37 | NR_DEAD - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
38 | }; | |
39 | static const int KBD_NR_TYPES = ARRAY_SIZE(kbd_max_vals); | |
40 | ||
41 | static unsigned char ret_diacr[NR_DEAD] = { | |
42 | '`', '\'', '^', '~', '"', ',' | |
43 | }; | |
44 | ||
45 | /* | |
46 | * Alloc/free of kbd_data structures. | |
47 | */ | |
48 | struct kbd_data * | |
49 | kbd_alloc(void) { | |
50 | struct kbd_data *kbd; | |
777a5510 | 51 | int i; |
1da177e4 | 52 | |
88abaab4 | 53 | kbd = kzalloc(sizeof(struct kbd_data), GFP_KERNEL); |
1da177e4 LT |
54 | if (!kbd) |
55 | goto out; | |
88abaab4 | 56 | kbd->key_maps = kzalloc(sizeof(key_maps), GFP_KERNEL); |
da074d0a | 57 | if (!kbd->key_maps) |
1da177e4 | 58 | goto out_kbd; |
1da177e4 LT |
59 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) { |
60 | if (key_maps[i]) { | |
939e379e JL |
61 | kbd->key_maps[i] = kmemdup(key_maps[i], |
62 | sizeof(u_short) * NR_KEYS, | |
63 | GFP_KERNEL); | |
1da177e4 LT |
64 | if (!kbd->key_maps[i]) |
65 | goto out_maps; | |
1da177e4 LT |
66 | } |
67 | } | |
88abaab4 | 68 | kbd->func_table = kzalloc(sizeof(func_table), GFP_KERNEL); |
1da177e4 LT |
69 | if (!kbd->func_table) |
70 | goto out_maps; | |
1da177e4 LT |
71 | for (i = 0; i < ARRAY_SIZE(func_table); i++) { |
72 | if (func_table[i]) { | |
777a5510 JL |
73 | kbd->func_table[i] = kstrdup(func_table[i], |
74 | GFP_KERNEL); | |
1da177e4 LT |
75 | if (!kbd->func_table[i]) |
76 | goto out_func; | |
1da177e4 LT |
77 | } |
78 | } | |
79 | kbd->fn_handler = | |
88abaab4 | 80 | kzalloc(sizeof(fn_handler_fn *) * NR_FN_HANDLER, GFP_KERNEL); |
1da177e4 LT |
81 | if (!kbd->fn_handler) |
82 | goto out_func; | |
939e379e JL |
83 | kbd->accent_table = kmemdup(accent_table, |
84 | sizeof(struct kbdiacruc) * MAX_DIACR, | |
85 | GFP_KERNEL); | |
1da177e4 LT |
86 | if (!kbd->accent_table) |
87 | goto out_fn_handler; | |
1da177e4 LT |
88 | kbd->accent_table_size = accent_table_size; |
89 | return kbd; | |
90 | ||
91 | out_fn_handler: | |
92 | kfree(kbd->fn_handler); | |
93 | out_func: | |
94 | for (i = 0; i < ARRAY_SIZE(func_table); i++) | |
17fd682e | 95 | kfree(kbd->func_table[i]); |
1da177e4 LT |
96 | kfree(kbd->func_table); |
97 | out_maps: | |
98 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) | |
17fd682e | 99 | kfree(kbd->key_maps[i]); |
1da177e4 LT |
100 | kfree(kbd->key_maps); |
101 | out_kbd: | |
102 | kfree(kbd); | |
103 | out: | |
d2c993d8 | 104 | return NULL; |
1da177e4 LT |
105 | } |
106 | ||
107 | void | |
108 | kbd_free(struct kbd_data *kbd) | |
109 | { | |
110 | int i; | |
111 | ||
112 | kfree(kbd->accent_table); | |
113 | kfree(kbd->fn_handler); | |
114 | for (i = 0; i < ARRAY_SIZE(func_table); i++) | |
17fd682e | 115 | kfree(kbd->func_table[i]); |
1da177e4 LT |
116 | kfree(kbd->func_table); |
117 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) | |
17fd682e | 118 | kfree(kbd->key_maps[i]); |
1da177e4 LT |
119 | kfree(kbd->key_maps); |
120 | kfree(kbd); | |
121 | } | |
122 | ||
123 | /* | |
124 | * Generate ascii -> ebcdic translation table from kbd_data. | |
125 | */ | |
126 | void | |
127 | kbd_ascebc(struct kbd_data *kbd, unsigned char *ascebc) | |
128 | { | |
129 | unsigned short *keymap, keysym; | |
130 | int i, j, k; | |
131 | ||
132 | memset(ascebc, 0x40, 256); | |
133 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) { | |
134 | keymap = kbd->key_maps[i]; | |
135 | if (!keymap) | |
136 | continue; | |
137 | for (j = 0; j < NR_KEYS; j++) { | |
138 | k = ((i & 1) << 7) + j; | |
139 | keysym = keymap[j]; | |
140 | if (KTYP(keysym) == (KT_LATIN | 0xf0) || | |
141 | KTYP(keysym) == (KT_LETTER | 0xf0)) | |
142 | ascebc[KVAL(keysym)] = k; | |
143 | else if (KTYP(keysym) == (KT_DEAD | 0xf0)) | |
144 | ascebc[ret_diacr[KVAL(keysym)]] = k; | |
145 | } | |
146 | } | |
147 | } | |
148 | ||
2b67fc46 | 149 | #if 0 |
1da177e4 LT |
150 | /* |
151 | * Generate ebcdic -> ascii translation table from kbd_data. | |
152 | */ | |
153 | void | |
154 | kbd_ebcasc(struct kbd_data *kbd, unsigned char *ebcasc) | |
155 | { | |
156 | unsigned short *keymap, keysym; | |
157 | int i, j, k; | |
158 | ||
159 | memset(ebcasc, ' ', 256); | |
160 | for (i = 0; i < ARRAY_SIZE(key_maps); i++) { | |
161 | keymap = kbd->key_maps[i]; | |
162 | if (!keymap) | |
163 | continue; | |
164 | for (j = 0; j < NR_KEYS; j++) { | |
165 | keysym = keymap[j]; | |
166 | k = ((i & 1) << 7) + j; | |
167 | if (KTYP(keysym) == (KT_LATIN | 0xf0) || | |
168 | KTYP(keysym) == (KT_LETTER | 0xf0)) | |
169 | ebcasc[k] = KVAL(keysym); | |
170 | else if (KTYP(keysym) == (KT_DEAD | 0xf0)) | |
171 | ebcasc[k] = ret_diacr[KVAL(keysym)]; | |
172 | } | |
173 | } | |
174 | } | |
2b67fc46 | 175 | #endif |
1da177e4 LT |
176 | |
177 | /* | |
178 | * We have a combining character DIACR here, followed by the character CH. | |
179 | * If the combination occurs in the table, return the corresponding value. | |
180 | * Otherwise, if CH is a space or equals DIACR, return DIACR. | |
181 | * Otherwise, conclude that DIACR was not combining after all, | |
182 | * queue it and return CH. | |
183 | */ | |
04c71976 ST |
184 | static unsigned int |
185 | handle_diacr(struct kbd_data *kbd, unsigned int ch) | |
1da177e4 LT |
186 | { |
187 | int i, d; | |
188 | ||
189 | d = kbd->diacr; | |
190 | kbd->diacr = 0; | |
191 | ||
192 | for (i = 0; i < kbd->accent_table_size; i++) { | |
193 | if (kbd->accent_table[i].diacr == d && | |
194 | kbd->accent_table[i].base == ch) | |
195 | return kbd->accent_table[i].result; | |
196 | } | |
197 | ||
198 | if (ch == ' ' || ch == d) | |
199 | return d; | |
200 | ||
ba186e7d | 201 | kbd_put_queue(kbd->port, d); |
1da177e4 LT |
202 | return ch; |
203 | } | |
204 | ||
205 | /* | |
206 | * Handle dead key. | |
207 | */ | |
208 | static void | |
209 | k_dead(struct kbd_data *kbd, unsigned char value) | |
210 | { | |
211 | value = ret_diacr[value]; | |
212 | kbd->diacr = (kbd->diacr ? handle_diacr(kbd, value) : value); | |
213 | } | |
214 | ||
215 | /* | |
216 | * Normal character handler. | |
217 | */ | |
218 | static void | |
219 | k_self(struct kbd_data *kbd, unsigned char value) | |
220 | { | |
221 | if (kbd->diacr) | |
222 | value = handle_diacr(kbd, value); | |
ba186e7d | 223 | kbd_put_queue(kbd->port, value); |
1da177e4 LT |
224 | } |
225 | ||
226 | /* | |
227 | * Special key handlers | |
228 | */ | |
229 | static void | |
230 | k_ignore(struct kbd_data *kbd, unsigned char value) | |
231 | { | |
232 | } | |
233 | ||
234 | /* | |
235 | * Function key handler. | |
236 | */ | |
237 | static void | |
238 | k_fn(struct kbd_data *kbd, unsigned char value) | |
239 | { | |
240 | if (kbd->func_table[value]) | |
ba186e7d | 241 | kbd_puts_queue(kbd->port, kbd->func_table[value]); |
1da177e4 LT |
242 | } |
243 | ||
244 | static void | |
245 | k_spec(struct kbd_data *kbd, unsigned char value) | |
246 | { | |
247 | if (value >= NR_FN_HANDLER) | |
248 | return; | |
249 | if (kbd->fn_handler[value]) | |
250 | kbd->fn_handler[value](kbd); | |
251 | } | |
252 | ||
253 | /* | |
254 | * Put utf8 character to tty flip buffer. | |
255 | * UTF-8 is defined for words of up to 31 bits, | |
256 | * but we need only 16 bits here | |
257 | */ | |
258 | static void | |
ba186e7d | 259 | to_utf8(struct tty_port *port, ushort c) |
1da177e4 LT |
260 | { |
261 | if (c < 0x80) | |
262 | /* 0******* */ | |
ba186e7d | 263 | kbd_put_queue(port, c); |
1da177e4 LT |
264 | else if (c < 0x800) { |
265 | /* 110***** 10****** */ | |
ba186e7d JS |
266 | kbd_put_queue(port, 0xc0 | (c >> 6)); |
267 | kbd_put_queue(port, 0x80 | (c & 0x3f)); | |
1da177e4 LT |
268 | } else { |
269 | /* 1110**** 10****** 10****** */ | |
ba186e7d JS |
270 | kbd_put_queue(port, 0xe0 | (c >> 12)); |
271 | kbd_put_queue(port, 0x80 | ((c >> 6) & 0x3f)); | |
272 | kbd_put_queue(port, 0x80 | (c & 0x3f)); | |
1da177e4 LT |
273 | } |
274 | } | |
275 | ||
276 | /* | |
277 | * Process keycode. | |
278 | */ | |
279 | void | |
280 | kbd_keycode(struct kbd_data *kbd, unsigned int keycode) | |
281 | { | |
282 | unsigned short keysym; | |
283 | unsigned char type, value; | |
284 | ||
ba186e7d | 285 | if (!kbd) |
1da177e4 LT |
286 | return; |
287 | ||
288 | if (keycode >= 384) | |
289 | keysym = kbd->key_maps[5][keycode - 384]; | |
290 | else if (keycode >= 256) | |
291 | keysym = kbd->key_maps[4][keycode - 256]; | |
292 | else if (keycode >= 128) | |
293 | keysym = kbd->key_maps[1][keycode - 128]; | |
294 | else | |
295 | keysym = kbd->key_maps[0][keycode]; | |
296 | ||
297 | type = KTYP(keysym); | |
298 | if (type >= 0xf0) { | |
299 | type -= 0xf0; | |
300 | if (type == KT_LETTER) | |
301 | type = KT_LATIN; | |
302 | value = KVAL(keysym); | |
303 | #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */ | |
304 | if (kbd->sysrq) { | |
305 | if (kbd->sysrq == K(KT_LATIN, '-')) { | |
306 | kbd->sysrq = 0; | |
f335397d | 307 | handle_sysrq(value); |
1da177e4 LT |
308 | return; |
309 | } | |
310 | if (value == '-') { | |
311 | kbd->sysrq = K(KT_LATIN, '-'); | |
312 | return; | |
313 | } | |
314 | /* Incomplete sysrq sequence. */ | |
315 | (*k_handler[KTYP(kbd->sysrq)])(kbd, KVAL(kbd->sysrq)); | |
316 | kbd->sysrq = 0; | |
317 | } else if ((type == KT_LATIN && value == '^') || | |
318 | (type == KT_DEAD && ret_diacr[value] == '^')) { | |
319 | kbd->sysrq = K(type, value); | |
320 | return; | |
321 | } | |
322 | #endif | |
323 | (*k_handler[type])(kbd, value); | |
324 | } else | |
ba186e7d | 325 | to_utf8(kbd->port, keysym); |
1da177e4 LT |
326 | } |
327 | ||
328 | /* | |
329 | * Ioctl stuff. | |
330 | */ | |
331 | static int | |
332 | do_kdsk_ioctl(struct kbd_data *kbd, struct kbentry __user *user_kbe, | |
333 | int cmd, int perm) | |
334 | { | |
335 | struct kbentry tmp; | |
336 | ushort *key_map, val, ov; | |
337 | ||
338 | if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) | |
339 | return -EFAULT; | |
340 | #if NR_KEYS < 256 | |
341 | if (tmp.kb_index >= NR_KEYS) | |
342 | return -EINVAL; | |
343 | #endif | |
344 | #if MAX_NR_KEYMAPS < 256 | |
345 | if (tmp.kb_table >= MAX_NR_KEYMAPS) | |
346 | return -EINVAL; | |
347 | #endif | |
348 | ||
349 | switch (cmd) { | |
350 | case KDGKBENT: | |
351 | key_map = kbd->key_maps[tmp.kb_table]; | |
352 | if (key_map) { | |
353 | val = U(key_map[tmp.kb_index]); | |
354 | if (KTYP(val) >= KBD_NR_TYPES) | |
355 | val = K_HOLE; | |
356 | } else | |
357 | val = (tmp.kb_index ? K_HOLE : K_NOSUCHMAP); | |
358 | return put_user(val, &user_kbe->kb_value); | |
359 | case KDSKBENT: | |
360 | if (!perm) | |
361 | return -EPERM; | |
362 | if (!tmp.kb_index && tmp.kb_value == K_NOSUCHMAP) { | |
363 | /* disallocate map */ | |
364 | key_map = kbd->key_maps[tmp.kb_table]; | |
365 | if (key_map) { | |
d2c993d8 | 366 | kbd->key_maps[tmp.kb_table] = NULL; |
1da177e4 LT |
367 | kfree(key_map); |
368 | } | |
369 | break; | |
370 | } | |
371 | ||
372 | if (KTYP(tmp.kb_value) >= KBD_NR_TYPES) | |
373 | return -EINVAL; | |
374 | if (KVAL(tmp.kb_value) > kbd_max_vals[KTYP(tmp.kb_value)]) | |
375 | return -EINVAL; | |
376 | ||
377 | if (!(key_map = kbd->key_maps[tmp.kb_table])) { | |
378 | int j; | |
379 | ||
5cbded58 | 380 | key_map = kmalloc(sizeof(plain_map), |
1da177e4 LT |
381 | GFP_KERNEL); |
382 | if (!key_map) | |
383 | return -ENOMEM; | |
384 | kbd->key_maps[tmp.kb_table] = key_map; | |
385 | for (j = 0; j < NR_KEYS; j++) | |
386 | key_map[j] = U(K_HOLE); | |
387 | } | |
388 | ov = U(key_map[tmp.kb_index]); | |
389 | if (tmp.kb_value == ov) | |
390 | break; /* nothing to do */ | |
391 | /* | |
392 | * Attention Key. | |
393 | */ | |
394 | if (((ov == K_SAK) || (tmp.kb_value == K_SAK)) && | |
395 | !capable(CAP_SYS_ADMIN)) | |
396 | return -EPERM; | |
397 | key_map[tmp.kb_index] = U(tmp.kb_value); | |
398 | break; | |
399 | } | |
400 | return 0; | |
401 | } | |
402 | ||
403 | static int | |
404 | do_kdgkb_ioctl(struct kbd_data *kbd, struct kbsentry __user *u_kbs, | |
405 | int cmd, int perm) | |
406 | { | |
407 | unsigned char kb_func; | |
408 | char *p; | |
409 | int len; | |
410 | ||
411 | /* Get u_kbs->kb_func. */ | |
412 | if (get_user(kb_func, &u_kbs->kb_func)) | |
413 | return -EFAULT; | |
414 | #if MAX_NR_FUNC < 256 | |
415 | if (kb_func >= MAX_NR_FUNC) | |
416 | return -EINVAL; | |
417 | #endif | |
418 | ||
419 | switch (cmd) { | |
420 | case KDGKBSENT: | |
421 | p = kbd->func_table[kb_func]; | |
422 | if (p) { | |
423 | len = strlen(p); | |
424 | if (len >= sizeof(u_kbs->kb_string)) | |
425 | len = sizeof(u_kbs->kb_string) - 1; | |
426 | if (copy_to_user(u_kbs->kb_string, p, len)) | |
427 | return -EFAULT; | |
428 | } else | |
429 | len = 0; | |
430 | if (put_user('\0', u_kbs->kb_string + len)) | |
431 | return -EFAULT; | |
432 | break; | |
433 | case KDSKBSENT: | |
434 | if (!perm) | |
435 | return -EPERM; | |
8cb81811 | 436 | len = strnlen_user(u_kbs->kb_string, sizeof(u_kbs->kb_string)); |
172411f1 DA |
437 | if (!len) |
438 | return -EFAULT; | |
8cb81811 | 439 | if (len > sizeof(u_kbs->kb_string)) |
172411f1 | 440 | return -EINVAL; |
8cb81811 | 441 | p = kmalloc(len, GFP_KERNEL); |
1da177e4 LT |
442 | if (!p) |
443 | return -ENOMEM; | |
444 | if (copy_from_user(p, u_kbs->kb_string, len)) { | |
445 | kfree(p); | |
446 | return -EFAULT; | |
447 | } | |
8cb81811 JK |
448 | /* |
449 | * Make sure the string is terminated by 0. User could have | |
450 | * modified it between us running strnlen_user() and copying it. | |
451 | */ | |
452 | p[len - 1] = 0; | |
17fd682e | 453 | kfree(kbd->func_table[kb_func]); |
1da177e4 LT |
454 | kbd->func_table[kb_func] = p; |
455 | break; | |
456 | } | |
457 | return 0; | |
458 | } | |
459 | ||
65c56e07 | 460 | int kbd_ioctl(struct kbd_data *kbd, unsigned int cmd, unsigned long arg) |
1da177e4 | 461 | { |
ba186e7d | 462 | struct tty_struct *tty; |
1da177e4 | 463 | void __user *argp; |
b652277b DC |
464 | unsigned int ct; |
465 | int perm; | |
1da177e4 LT |
466 | |
467 | argp = (void __user *)arg; | |
468 | ||
469 | /* | |
470 | * To have permissions to do most of the vt ioctls, we either have | |
471 | * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG. | |
472 | */ | |
ba186e7d JS |
473 | tty = tty_port_tty_get(kbd->port); |
474 | /* FIXME this test is pretty racy */ | |
475 | perm = current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG); | |
476 | tty_kref_put(tty); | |
1da177e4 LT |
477 | switch (cmd) { |
478 | case KDGKBTYPE: | |
479 | return put_user(KB_101, (char __user *)argp); | |
480 | case KDGKBENT: | |
481 | case KDSKBENT: | |
482 | return do_kdsk_ioctl(kbd, argp, cmd, perm); | |
483 | case KDGKBSENT: | |
484 | case KDSKBSENT: | |
485 | return do_kdgkb_ioctl(kbd, argp, cmd, perm); | |
486 | case KDGKBDIACR: | |
04c71976 ST |
487 | { |
488 | struct kbdiacrs __user *a = argp; | |
489 | struct kbdiacr diacr; | |
490 | int i; | |
1da177e4 LT |
491 | |
492 | if (put_user(kbd->accent_table_size, &a->kb_cnt)) | |
493 | return -EFAULT; | |
04c71976 ST |
494 | for (i = 0; i < kbd->accent_table_size; i++) { |
495 | diacr.diacr = kbd->accent_table[i].diacr; | |
496 | diacr.base = kbd->accent_table[i].base; | |
497 | diacr.result = kbd->accent_table[i].result; | |
498 | if (copy_to_user(a->kbdiacr + i, &diacr, sizeof(struct kbdiacr))) | |
499 | return -EFAULT; | |
500 | } | |
501 | return 0; | |
502 | } | |
503 | case KDGKBDIACRUC: | |
504 | { | |
505 | struct kbdiacrsuc __user *a = argp; | |
506 | ||
1da177e4 | 507 | ct = kbd->accent_table_size; |
04c71976 ST |
508 | if (put_user(ct, &a->kb_cnt)) |
509 | return -EFAULT; | |
510 | if (copy_to_user(a->kbdiacruc, kbd->accent_table, | |
511 | ct * sizeof(struct kbdiacruc))) | |
1da177e4 LT |
512 | return -EFAULT; |
513 | return 0; | |
04c71976 | 514 | } |
1da177e4 | 515 | case KDSKBDIACR: |
04c71976 ST |
516 | { |
517 | struct kbdiacrs __user *a = argp; | |
518 | struct kbdiacr diacr; | |
519 | int i; | |
520 | ||
1da177e4 LT |
521 | if (!perm) |
522 | return -EPERM; | |
523 | if (get_user(ct, &a->kb_cnt)) | |
524 | return -EFAULT; | |
525 | if (ct >= MAX_DIACR) | |
526 | return -EINVAL; | |
527 | kbd->accent_table_size = ct; | |
04c71976 ST |
528 | for (i = 0; i < ct; i++) { |
529 | if (copy_from_user(&diacr, a->kbdiacr + i, sizeof(struct kbdiacr))) | |
530 | return -EFAULT; | |
531 | kbd->accent_table[i].diacr = diacr.diacr; | |
532 | kbd->accent_table[i].base = diacr.base; | |
533 | kbd->accent_table[i].result = diacr.result; | |
534 | } | |
535 | return 0; | |
536 | } | |
537 | case KDSKBDIACRUC: | |
538 | { | |
539 | struct kbdiacrsuc __user *a = argp; | |
540 | ||
541 | if (!perm) | |
542 | return -EPERM; | |
543 | if (get_user(ct, &a->kb_cnt)) | |
544 | return -EFAULT; | |
545 | if (ct >= MAX_DIACR) | |
546 | return -EINVAL; | |
547 | kbd->accent_table_size = ct; | |
548 | if (copy_from_user(kbd->accent_table, a->kbdiacruc, | |
549 | ct * sizeof(struct kbdiacruc))) | |
1da177e4 LT |
550 | return -EFAULT; |
551 | return 0; | |
04c71976 | 552 | } |
1da177e4 LT |
553 | default: |
554 | return -ENOIOCTLCMD; | |
555 | } | |
556 | } | |
557 | ||
558 | EXPORT_SYMBOL(kbd_ioctl); | |
559 | EXPORT_SYMBOL(kbd_ascebc); | |
560 | EXPORT_SYMBOL(kbd_free); | |
561 | EXPORT_SYMBOL(kbd_alloc); | |
562 | EXPORT_SYMBOL(kbd_keycode); |