1 // SPDX-License-Identifier: GPL-2.0
38 	255, ARRAY_SIZE(func_table) - 1, NR_FN_HANDLER - 1, 0,
39 	NR_DEAD - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
63 	'-',	/* dead_stroke */
84 	kbd->key_maps = kzalloc(sizeof(ebc_key_maps), GFP_KERNEL);  in kbd_alloc()
85 	if (!kbd->key_maps)  in kbd_alloc()
89 			kbd->key_maps[i] = kmemdup(ebc_key_maps[i],  in kbd_alloc()
92 			if (!kbd->key_maps[i])  in kbd_alloc()
96 	kbd->func_table = kzalloc(sizeof(ebc_func_table), GFP_KERNEL);  in kbd_alloc()
97 	if (!kbd->func_table)  in kbd_alloc()
101 			kbd->func_table[i] = kstrdup(ebc_func_table[i],  in kbd_alloc()
103 			if (!kbd->func_table[i])  in kbd_alloc()
107 	kbd->fn_handler =  in kbd_alloc()
109 	if (!kbd->fn_handler)  in kbd_alloc()
111 	kbd->accent_table = kmemdup(ebc_accent_table,  in kbd_alloc()
114 	if (!kbd->accent_table)  in kbd_alloc()
116 	kbd->accent_table_size = ebc_accent_table_size;  in kbd_alloc()
120 	kfree(kbd->fn_handler);  in kbd_alloc()
123 		kfree(kbd->func_table[i]);  in kbd_alloc()
124 	kfree(kbd->func_table);  in kbd_alloc()
127 		kfree(kbd->key_maps[i]);  in kbd_alloc()
128 	kfree(kbd->key_maps);  in kbd_alloc()
140 	kfree(kbd->accent_table);  in kbd_free()
141 	kfree(kbd->fn_handler);  in kbd_free()
143 		kfree(kbd->func_table[i]);  in kbd_free()
144 	kfree(kbd->func_table);  in kbd_free()
146 		kfree(kbd->key_maps[i]);  in kbd_free()
147 	kfree(kbd->key_maps);  in kbd_free()
152  * Generate ascii -> ebcdic translation table from kbd_data.
162 		keymap = kbd->key_maps[i];  in kbd_ascebc()
179  * Generate ebcdic -> ascii translation table from kbd_data.
189 		keymap = kbd->key_maps[i];
206  * We have a combining character DIACR here, followed by the character CH.
217 	d = kbd->diacr;  in handle_diacr()
218 	kbd->diacr = 0;  in handle_diacr()
220 	for (i = 0; i < kbd->accent_table_size; i++) {  in handle_diacr()
221 		if (kbd->accent_table[i].diacr == d &&  in handle_diacr()
222 		    kbd->accent_table[i].base == ch)  in handle_diacr()
223 			return kbd->accent_table[i].result;  in handle_diacr()
229 	kbd_put_queue(kbd->port, d);  in handle_diacr()
240 	kbd->diacr = (kbd->diacr ? handle_diacr(kbd, value) : value);  in k_dead()
244  * Normal character handler.
249 	if (kbd->diacr)  in k_self()
251 	kbd_put_queue(kbd->port, value);  in k_self()
268 	if (kbd->func_table[value])  in k_fn()
269 		kbd_puts_queue(kbd->port, kbd->func_table[value]);  in k_fn()
277 	if (kbd->fn_handler[value])  in k_spec()
278 		kbd->fn_handler[value](kbd);  in k_spec()
282  * Put utf8 character to tty flip buffer.
283  * UTF-8 is defined for words of up to 31 bits,
317 		keysym = kbd->key_maps[5][keycode - 384];  in kbd_keycode()
319 		keysym = kbd->key_maps[4][keycode - 256];  in kbd_keycode()
320 	else if (keycode >= 128)  in kbd_keycode()
321 		keysym = kbd->key_maps[1][keycode - 128];  in kbd_keycode()
323 		keysym = kbd->key_maps[0][keycode];  in kbd_keycode()
327 		type -= 0xf0;  in kbd_keycode()
332 		if (kbd->sysrq) {  in kbd_keycode()
333 			if (kbd->sysrq == K(KT_LATIN, '-')) {  in kbd_keycode()
334 				kbd->sysrq = 0;  in kbd_keycode()
338 			if (value == '-') {  in kbd_keycode()
339 				kbd->sysrq = K(KT_LATIN, '-');  in kbd_keycode()
343 			(*k_handler[KTYP(kbd->sysrq)])(kbd, KVAL(kbd->sysrq));  in kbd_keycode()
344 			kbd->sysrq = 0;  in kbd_keycode()
347 			kbd->sysrq = K(type, value);  in kbd_keycode()
353 		to_utf8(kbd->port, keysym);  in kbd_keycode()
368 		return -EFAULT;  in do_kdsk_ioctl()
372 		return -EINVAL;  in do_kdsk_ioctl()
377 		return -EINVAL;	  in do_kdsk_ioctl()
383 		key_map = kbd->key_maps[kb_table];  in do_kdsk_ioctl()
390 		return put_user(val, &user_kbe->kb_value);  in do_kdsk_ioctl()
393 			return -EPERM;  in do_kdsk_ioctl()
396 			key_map = kbd->key_maps[kb_table];  in do_kdsk_ioctl()
398 			    kbd->key_maps[kb_table] = NULL;  in do_kdsk_ioctl()
405 			return -EINVAL;  in do_kdsk_ioctl()
407 			return -EINVAL;  in do_kdsk_ioctl()
409 		if (!(key_map = kbd->key_maps[kb_table])) {  in do_kdsk_ioctl()
415 				return -ENOMEM;  in do_kdsk_ioctl()
416 			kbd->key_maps[kb_table] = key_map;  in do_kdsk_ioctl()
428 			return -EPERM;  in do_kdsk_ioctl()
443 	/* Get u_kbs->kb_func. */  in do_kdgkb_ioctl()
444 	if (get_user(kb_func, &u_kbs->kb_func))  in do_kdgkb_ioctl()
445 		return -EFAULT;  in do_kdgkb_ioctl()
448 		return -EINVAL;  in do_kdgkb_ioctl()
453 		p = kbd->func_table[kb_func];  in do_kdgkb_ioctl()
456 			if (len >= sizeof(u_kbs->kb_string))  in do_kdgkb_ioctl()
457 				len = sizeof(u_kbs->kb_string) - 1;  in do_kdgkb_ioctl()
458 			if (copy_to_user(u_kbs->kb_string, p, len))  in do_kdgkb_ioctl()
459 				return -EFAULT;  in do_kdgkb_ioctl()
462 		if (put_user('\0', u_kbs->kb_string + len))  in do_kdgkb_ioctl()
463 			return -EFAULT;  in do_kdgkb_ioctl()
467 			return -EPERM;  in do_kdgkb_ioctl()
468 		p = strndup_user(u_kbs->kb_string, sizeof(u_kbs->kb_string));  in do_kdgkb_ioctl()
471 		kfree(kbd->func_table[kb_func]);  in do_kdgkb_ioctl()
472 		kbd->func_table[kb_func] = p;  in do_kdgkb_ioctl()
491 	tty = tty_port_tty_get(kbd->port);  in kbd_ioctl()
493 	perm = current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG);  in kbd_ioctl()
510 		if (put_user(kbd->accent_table_size, &a->kb_cnt))  in kbd_ioctl()
511 			return -EFAULT;  in kbd_ioctl()
512 		for (i = 0; i < kbd->accent_table_size; i++) {  in kbd_ioctl()
513 			diacr.diacr = kbd->accent_table[i].diacr;  in kbd_ioctl()
514 			diacr.base = kbd->accent_table[i].base;  in kbd_ioctl()
515 			diacr.result = kbd->accent_table[i].result;  in kbd_ioctl()
516 			if (copy_to_user(a->kbdiacr + i, &diacr, sizeof(struct kbdiacr)))  in kbd_ioctl()
517 			return -EFAULT;  in kbd_ioctl()
525 		ct = kbd->accent_table_size;  in kbd_ioctl()
526 		if (put_user(ct, &a->kb_cnt))  in kbd_ioctl()
527 			return -EFAULT;  in kbd_ioctl()
528 		if (copy_to_user(a->kbdiacruc, kbd->accent_table,  in kbd_ioctl()
530 			return -EFAULT;  in kbd_ioctl()
540 			return -EPERM;  in kbd_ioctl()
541 		if (get_user(ct, &a->kb_cnt))  in kbd_ioctl()
542 			return -EFAULT;  in kbd_ioctl()
544 			return -EINVAL;  in kbd_ioctl()
545 		kbd->accent_table_size = ct;  in kbd_ioctl()
547 			if (copy_from_user(&diacr, a->kbdiacr + i, sizeof(struct kbdiacr)))  in kbd_ioctl()
548 				return -EFAULT;  in kbd_ioctl()
549 			kbd->accent_table[i].diacr = diacr.diacr;  in kbd_ioctl()
550 			kbd->accent_table[i].base = diacr.base;  in kbd_ioctl()
551 			kbd->accent_table[i].result = diacr.result;  in kbd_ioctl()
560 			return -EPERM;  in kbd_ioctl()
561 		if (get_user(ct, &a->kb_cnt))  in kbd_ioctl()
562 			return -EFAULT;  in kbd_ioctl()
564 			return -EINVAL;  in kbd_ioctl()
565 		kbd->accent_table_size = ct;  in kbd_ioctl()
566 		if (copy_from_user(kbd->accent_table, a->kbdiacruc,  in kbd_ioctl()
568 			return -EFAULT;  in kbd_ioctl()
572 		return -ENOIOCTLCMD;  in kbd_ioctl()