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25
26#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27
28#include <linux/consolemap.h>
29#include <linux/module.h>
30#include <linux/sched/signal.h>
31#include <linux/sched/debug.h>
32#include <linux/tty.h>
33#include <linux/tty_flip.h>
34#include <linux/mm.h>
35#include <linux/string.h>
36#include <linux/init.h>
37#include <linux/slab.h>
38#include <linux/leds.h>
39
40#include <linux/kbd_kern.h>
41#include <linux/kbd_diacr.h>
42#include <linux/vt_kern.h>
43#include <linux/input.h>
44#include <linux/reboot.h>
45#include <linux/notifier.h>
46#include <linux/jiffies.h>
47#include <linux/uaccess.h>
48
49#include <asm/irq_regs.h>
50
51extern void ctrl_alt_del(void);
52
53
54
55
56
57#define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
58
59#if defined(CONFIG_X86) || defined(CONFIG_PARISC)
60#include <asm/kbdleds.h>
61#else
62static inline int kbd_defleds(void)
63{
64 return 0;
65}
66#endif
67
68#define KBD_DEFLOCK 0
69
70
71
72
73
74#define K_HANDLERS\
75 k_self, k_fn, k_spec, k_pad,\
76 k_dead, k_cons, k_cur, k_shift,\
77 k_meta, k_ascii, k_lock, k_lowercase,\
78 k_slock, k_dead2, k_brl, k_ignore
79
80typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
81 char up_flag);
82static k_handler_fn K_HANDLERS;
83static k_handler_fn *k_handler[16] = { K_HANDLERS };
84
85#define FN_HANDLERS\
86 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
87 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
88 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
89 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
90 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
91
92typedef void (fn_handler_fn)(struct vc_data *vc);
93static fn_handler_fn FN_HANDLERS;
94static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
95
96
97
98
99
100struct vt_spawn_console vt_spawn_con = {
101 .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
102 .pid = NULL,
103 .sig = 0,
104};
105
106
107
108
109
110
111static struct kbd_struct kbd_table[MAX_NR_CONSOLES];
112static struct kbd_struct *kbd = kbd_table;
113
114
115static const int max_vals[] = {
116 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
117 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
118 255, NR_LOCK - 1, 255, NR_BRL - 1
119};
120
121static const int NR_TYPES = ARRAY_SIZE(max_vals);
122
123static struct input_handler kbd_handler;
124static DEFINE_SPINLOCK(kbd_event_lock);
125static DEFINE_SPINLOCK(led_lock);
126static DEFINE_SPINLOCK(func_buf_lock);
127static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)];
128static unsigned char shift_down[NR_SHIFT];
129static bool dead_key_next;
130static int npadch = -1;
131static unsigned int diacr;
132static char rep;
133
134static int shift_state = 0;
135
136static unsigned int ledstate = -1U;
137static unsigned char ledioctl;
138
139
140
141
142static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
143
144int register_keyboard_notifier(struct notifier_block *nb)
145{
146 return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
147}
148EXPORT_SYMBOL_GPL(register_keyboard_notifier);
149
150int unregister_keyboard_notifier(struct notifier_block *nb)
151{
152 return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
153}
154EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
155
156
157
158
159
160
161
162
163
164
165
166struct getset_keycode_data {
167 struct input_keymap_entry ke;
168 int error;
169};
170
171static int getkeycode_helper(struct input_handle *handle, void *data)
172{
173 struct getset_keycode_data *d = data;
174
175 d->error = input_get_keycode(handle->dev, &d->ke);
176
177 return d->error == 0;
178}
179
180static int getkeycode(unsigned int scancode)
181{
182 struct getset_keycode_data d = {
183 .ke = {
184 .flags = 0,
185 .len = sizeof(scancode),
186 .keycode = 0,
187 },
188 .error = -ENODEV,
189 };
190
191 memcpy(d.ke.scancode, &scancode, sizeof(scancode));
192
193 input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper);
194
195 return d.error ?: d.ke.keycode;
196}
197
198static int setkeycode_helper(struct input_handle *handle, void *data)
199{
200 struct getset_keycode_data *d = data;
201
202 d->error = input_set_keycode(handle->dev, &d->ke);
203
204 return d->error == 0;
205}
206
207static int setkeycode(unsigned int scancode, unsigned int keycode)
208{
209 struct getset_keycode_data d = {
210 .ke = {
211 .flags = 0,
212 .len = sizeof(scancode),
213 .keycode = keycode,
214 },
215 .error = -ENODEV,
216 };
217
218 memcpy(d.ke.scancode, &scancode, sizeof(scancode));
219
220 input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper);
221
222 return d.error;
223}
224
225
226
227
228
229
230static int kd_sound_helper(struct input_handle *handle, void *data)
231{
232 unsigned int *hz = data;
233 struct input_dev *dev = handle->dev;
234
235 if (test_bit(EV_SND, dev->evbit)) {
236 if (test_bit(SND_TONE, dev->sndbit)) {
237 input_inject_event(handle, EV_SND, SND_TONE, *hz);
238 if (*hz)
239 return 0;
240 }
241 if (test_bit(SND_BELL, dev->sndbit))
242 input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0);
243 }
244
245 return 0;
246}
247
248static void kd_nosound(struct timer_list *unused)
249{
250 static unsigned int zero;
251
252 input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper);
253}
254
255static DEFINE_TIMER(kd_mksound_timer, kd_nosound);
256
257void kd_mksound(unsigned int hz, unsigned int ticks)
258{
259 del_timer_sync(&kd_mksound_timer);
260
261 input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper);
262
263 if (hz && ticks)
264 mod_timer(&kd_mksound_timer, jiffies + ticks);
265}
266EXPORT_SYMBOL(kd_mksound);
267
268
269
270
271
272static int kbd_rate_helper(struct input_handle *handle, void *data)
273{
274 struct input_dev *dev = handle->dev;
275 struct kbd_repeat *rpt = data;
276
277 if (test_bit(EV_REP, dev->evbit)) {
278
279 if (rpt[0].delay > 0)
280 input_inject_event(handle,
281 EV_REP, REP_DELAY, rpt[0].delay);
282 if (rpt[0].period > 0)
283 input_inject_event(handle,
284 EV_REP, REP_PERIOD, rpt[0].period);
285
286 rpt[1].delay = dev->rep[REP_DELAY];
287 rpt[1].period = dev->rep[REP_PERIOD];
288 }
289
290 return 0;
291}
292
293int kbd_rate(struct kbd_repeat *rpt)
294{
295 struct kbd_repeat data[2] = { *rpt };
296
297 input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper);
298 *rpt = data[1];
299
300 return 0;
301}
302
303
304
305
306static void put_queue(struct vc_data *vc, int ch)
307{
308 tty_insert_flip_char(&vc->port, ch, 0);
309 tty_schedule_flip(&vc->port);
310}
311
312static void puts_queue(struct vc_data *vc, char *cp)
313{
314 while (*cp) {
315 tty_insert_flip_char(&vc->port, *cp, 0);
316 cp++;
317 }
318 tty_schedule_flip(&vc->port);
319}
320
321static void applkey(struct vc_data *vc, int key, char mode)
322{
323 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
324
325 buf[1] = (mode ? 'O' : '[');
326 buf[2] = key;
327 puts_queue(vc, buf);
328}
329
330
331
332
333
334
335
336static void to_utf8(struct vc_data *vc, uint c)
337{
338 if (c < 0x80)
339
340 put_queue(vc, c);
341 else if (c < 0x800) {
342
343 put_queue(vc, 0xc0 | (c >> 6));
344 put_queue(vc, 0x80 | (c & 0x3f));
345 } else if (c < 0x10000) {
346 if (c >= 0xD800 && c < 0xE000)
347 return;
348 if (c == 0xFFFF)
349 return;
350
351 put_queue(vc, 0xe0 | (c >> 12));
352 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
353 put_queue(vc, 0x80 | (c & 0x3f));
354 } else if (c < 0x110000) {
355
356 put_queue(vc, 0xf0 | (c >> 18));
357 put_queue(vc, 0x80 | ((c >> 12) & 0x3f));
358 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
359 put_queue(vc, 0x80 | (c & 0x3f));
360 }
361}
362
363
364
365
366
367
368
369
370static void do_compute_shiftstate(void)
371{
372 unsigned int k, sym, val;
373
374 shift_state = 0;
375 memset(shift_down, 0, sizeof(shift_down));
376
377 for_each_set_bit(k, key_down, min(NR_KEYS, KEY_CNT)) {
378 sym = U(key_maps[0][k]);
379 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
380 continue;
381
382 val = KVAL(sym);
383 if (val == KVAL(K_CAPSSHIFT))
384 val = KVAL(K_SHIFT);
385
386 shift_down[val]++;
387 shift_state |= BIT(val);
388 }
389}
390
391
392void compute_shiftstate(void)
393{
394 unsigned long flags;
395 spin_lock_irqsave(&kbd_event_lock, flags);
396 do_compute_shiftstate();
397 spin_unlock_irqrestore(&kbd_event_lock, flags);
398}
399
400
401
402
403
404
405
406
407static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
408{
409 unsigned int d = diacr;
410 unsigned int i;
411
412 diacr = 0;
413
414 if ((d & ~0xff) == BRL_UC_ROW) {
415 if ((ch & ~0xff) == BRL_UC_ROW)
416 return d | ch;
417 } else {
418 for (i = 0; i < accent_table_size; i++)
419 if (accent_table[i].diacr == d && accent_table[i].base == ch)
420 return accent_table[i].result;
421 }
422
423 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
424 return d;
425
426 if (kbd->kbdmode == VC_UNICODE)
427 to_utf8(vc, d);
428 else {
429 int c = conv_uni_to_8bit(d);
430 if (c != -1)
431 put_queue(vc, c);
432 }
433
434 return ch;
435}
436
437
438
439
440static void fn_enter(struct vc_data *vc)
441{
442 if (diacr) {
443 if (kbd->kbdmode == VC_UNICODE)
444 to_utf8(vc, diacr);
445 else {
446 int c = conv_uni_to_8bit(diacr);
447 if (c != -1)
448 put_queue(vc, c);
449 }
450 diacr = 0;
451 }
452
453 put_queue(vc, 13);
454 if (vc_kbd_mode(kbd, VC_CRLF))
455 put_queue(vc, 10);
456}
457
458static void fn_caps_toggle(struct vc_data *vc)
459{
460 if (rep)
461 return;
462
463 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
464}
465
466static void fn_caps_on(struct vc_data *vc)
467{
468 if (rep)
469 return;
470
471 set_vc_kbd_led(kbd, VC_CAPSLOCK);
472}
473
474static void fn_show_ptregs(struct vc_data *vc)
475{
476 struct pt_regs *regs = get_irq_regs();
477
478 if (regs)
479 show_regs(regs);
480}
481
482static void fn_hold(struct vc_data *vc)
483{
484 struct tty_struct *tty = vc->port.tty;
485
486 if (rep || !tty)
487 return;
488
489
490
491
492
493
494 if (tty->stopped)
495 start_tty(tty);
496 else
497 stop_tty(tty);
498}
499
500static void fn_num(struct vc_data *vc)
501{
502 if (vc_kbd_mode(kbd, VC_APPLIC))
503 applkey(vc, 'P', 1);
504 else
505 fn_bare_num(vc);
506}
507
508
509
510
511
512
513
514static void fn_bare_num(struct vc_data *vc)
515{
516 if (!rep)
517 chg_vc_kbd_led(kbd, VC_NUMLOCK);
518}
519
520static void fn_lastcons(struct vc_data *vc)
521{
522
523 set_console(last_console);
524}
525
526static void fn_dec_console(struct vc_data *vc)
527{
528 int i, cur = fg_console;
529
530
531 if (want_console != -1)
532 cur = want_console;
533
534 for (i = cur - 1; i != cur; i--) {
535 if (i == -1)
536 i = MAX_NR_CONSOLES - 1;
537 if (vc_cons_allocated(i))
538 break;
539 }
540 set_console(i);
541}
542
543static void fn_inc_console(struct vc_data *vc)
544{
545 int i, cur = fg_console;
546
547
548 if (want_console != -1)
549 cur = want_console;
550
551 for (i = cur+1; i != cur; i++) {
552 if (i == MAX_NR_CONSOLES)
553 i = 0;
554 if (vc_cons_allocated(i))
555 break;
556 }
557 set_console(i);
558}
559
560static void fn_send_intr(struct vc_data *vc)
561{
562 tty_insert_flip_char(&vc->port, 0, TTY_BREAK);
563 tty_schedule_flip(&vc->port);
564}
565
566static void fn_scroll_forw(struct vc_data *vc)
567{
568 scrollfront(vc, 0);
569}
570
571static void fn_scroll_back(struct vc_data *vc)
572{
573 scrollback(vc);
574}
575
576static void fn_show_mem(struct vc_data *vc)
577{
578 show_mem(0, NULL);
579}
580
581static void fn_show_state(struct vc_data *vc)
582{
583 show_state();
584}
585
586static void fn_boot_it(struct vc_data *vc)
587{
588 ctrl_alt_del();
589}
590
591static void fn_compose(struct vc_data *vc)
592{
593 dead_key_next = true;
594}
595
596static void fn_spawn_con(struct vc_data *vc)
597{
598 spin_lock(&vt_spawn_con.lock);
599 if (vt_spawn_con.pid)
600 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
601 put_pid(vt_spawn_con.pid);
602 vt_spawn_con.pid = NULL;
603 }
604 spin_unlock(&vt_spawn_con.lock);
605}
606
607static void fn_SAK(struct vc_data *vc)
608{
609 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
610 schedule_work(SAK_work);
611}
612
613static void fn_null(struct vc_data *vc)
614{
615 do_compute_shiftstate();
616}
617
618
619
620
621static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
622{
623}
624
625static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
626{
627 if (up_flag)
628 return;
629 if (value >= ARRAY_SIZE(fn_handler))
630 return;
631 if ((kbd->kbdmode == VC_RAW ||
632 kbd->kbdmode == VC_MEDIUMRAW ||
633 kbd->kbdmode == VC_OFF) &&
634 value != KVAL(K_SAK))
635 return;
636 fn_handler[value](vc);
637}
638
639static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
640{
641 pr_err("k_lowercase was called - impossible\n");
642}
643
644static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
645{
646 if (up_flag)
647 return;
648
649 if (diacr)
650 value = handle_diacr(vc, value);
651
652 if (dead_key_next) {
653 dead_key_next = false;
654 diacr = value;
655 return;
656 }
657 if (kbd->kbdmode == VC_UNICODE)
658 to_utf8(vc, value);
659 else {
660 int c = conv_uni_to_8bit(value);
661 if (c != -1)
662 put_queue(vc, c);
663 }
664}
665
666
667
668
669
670
671static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
672{
673 if (up_flag)
674 return;
675
676 diacr = (diacr ? handle_diacr(vc, value) : value);
677}
678
679static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
680{
681 k_unicode(vc, conv_8bit_to_uni(value), up_flag);
682}
683
684static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
685{
686 k_deadunicode(vc, value, up_flag);
687}
688
689
690
691
692static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
693{
694 static const unsigned char ret_diacr[NR_DEAD] = {
695 '`',
696 '\'',
697 '^',
698 '~',
699 '"',
700 ',',
701 '_',
702 'U',
703 '.',
704 '*',
705 '=',
706 'c',
707 'k',
708 'i',
709 '#',
710 'o',
711 '!',
712 '?',
713 '+',
714 '-',
715 ')',
716 '(',
717 ':',
718 'n',
719 ';',
720 '$',
721 '@',
722 };
723
724 k_deadunicode(vc, ret_diacr[value], up_flag);
725}
726
727static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
728{
729 if (up_flag)
730 return;
731
732 set_console(value);
733}
734
735static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
736{
737 if (up_flag)
738 return;
739
740 if ((unsigned)value < ARRAY_SIZE(func_table)) {
741 if (func_table[value])
742 puts_queue(vc, func_table[value]);
743 } else
744 pr_err("k_fn called with value=%d\n", value);
745}
746
747static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
748{
749 static const char cur_chars[] = "BDCA";
750
751 if (up_flag)
752 return;
753
754 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
755}
756
757static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
758{
759 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
760 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
761
762 if (up_flag)
763 return;
764
765
766 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
767 applkey(vc, app_map[value], 1);
768 return;
769 }
770
771 if (!vc_kbd_led(kbd, VC_NUMLOCK)) {
772
773 switch (value) {
774 case KVAL(K_PCOMMA):
775 case KVAL(K_PDOT):
776 k_fn(vc, KVAL(K_REMOVE), 0);
777 return;
778 case KVAL(K_P0):
779 k_fn(vc, KVAL(K_INSERT), 0);
780 return;
781 case KVAL(K_P1):
782 k_fn(vc, KVAL(K_SELECT), 0);
783 return;
784 case KVAL(K_P2):
785 k_cur(vc, KVAL(K_DOWN), 0);
786 return;
787 case KVAL(K_P3):
788 k_fn(vc, KVAL(K_PGDN), 0);
789 return;
790 case KVAL(K_P4):
791 k_cur(vc, KVAL(K_LEFT), 0);
792 return;
793 case KVAL(K_P6):
794 k_cur(vc, KVAL(K_RIGHT), 0);
795 return;
796 case KVAL(K_P7):
797 k_fn(vc, KVAL(K_FIND), 0);
798 return;
799 case KVAL(K_P8):
800 k_cur(vc, KVAL(K_UP), 0);
801 return;
802 case KVAL(K_P9):
803 k_fn(vc, KVAL(K_PGUP), 0);
804 return;
805 case KVAL(K_P5):
806 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
807 return;
808 }
809 }
810
811 put_queue(vc, pad_chars[value]);
812 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
813 put_queue(vc, 10);
814}
815
816static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
817{
818 int old_state = shift_state;
819
820 if (rep)
821 return;
822
823
824
825
826 if (value == KVAL(K_CAPSSHIFT)) {
827 value = KVAL(K_SHIFT);
828 if (!up_flag)
829 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
830 }
831
832 if (up_flag) {
833
834
835
836
837 if (shift_down[value])
838 shift_down[value]--;
839 } else
840 shift_down[value]++;
841
842 if (shift_down[value])
843 shift_state |= (1 << value);
844 else
845 shift_state &= ~(1 << value);
846
847
848 if (up_flag && shift_state != old_state && npadch != -1) {
849 if (kbd->kbdmode == VC_UNICODE)
850 to_utf8(vc, npadch);
851 else
852 put_queue(vc, npadch & 0xff);
853 npadch = -1;
854 }
855}
856
857static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
858{
859 if (up_flag)
860 return;
861
862 if (vc_kbd_mode(kbd, VC_META)) {
863 put_queue(vc, '\033');
864 put_queue(vc, value);
865 } else
866 put_queue(vc, value | 0x80);
867}
868
869static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
870{
871 int base;
872
873 if (up_flag)
874 return;
875
876 if (value < 10) {
877
878 base = 10;
879 } else {
880
881 value -= 10;
882 base = 16;
883 }
884
885 if (npadch == -1)
886 npadch = value;
887 else
888 npadch = npadch * base + value;
889}
890
891static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
892{
893 if (up_flag || rep)
894 return;
895
896 chg_vc_kbd_lock(kbd, value);
897}
898
899static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
900{
901 k_shift(vc, value, up_flag);
902 if (up_flag || rep)
903 return;
904
905 chg_vc_kbd_slock(kbd, value);
906
907 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
908 kbd->slockstate = 0;
909 chg_vc_kbd_slock(kbd, value);
910 }
911}
912
913
914static unsigned brl_timeout = 300;
915MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
916module_param(brl_timeout, uint, 0644);
917
918static unsigned brl_nbchords = 1;
919MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
920module_param(brl_nbchords, uint, 0644);
921
922static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
923{
924 static unsigned long chords;
925 static unsigned committed;
926
927 if (!brl_nbchords)
928 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
929 else {
930 committed |= pattern;
931 chords++;
932 if (chords == brl_nbchords) {
933 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
934 chords = 0;
935 committed = 0;
936 }
937 }
938}
939
940static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
941{
942 static unsigned pressed, committing;
943 static unsigned long releasestart;
944
945 if (kbd->kbdmode != VC_UNICODE) {
946 if (!up_flag)
947 pr_warn("keyboard mode must be unicode for braille patterns\n");
948 return;
949 }
950
951 if (!value) {
952 k_unicode(vc, BRL_UC_ROW, up_flag);
953 return;
954 }
955
956 if (value > 8)
957 return;
958
959 if (!up_flag) {
960 pressed |= 1 << (value - 1);
961 if (!brl_timeout)
962 committing = pressed;
963 } else if (brl_timeout) {
964 if (!committing ||
965 time_after(jiffies,
966 releasestart + msecs_to_jiffies(brl_timeout))) {
967 committing = pressed;
968 releasestart = jiffies;
969 }
970 pressed &= ~(1 << (value - 1));
971 if (!pressed && committing) {
972 k_brlcommit(vc, committing, 0);
973 committing = 0;
974 }
975 } else {
976 if (committing) {
977 k_brlcommit(vc, committing, 0);
978 committing = 0;
979 }
980 pressed &= ~(1 << (value - 1));
981 }
982}
983
984#if IS_ENABLED(CONFIG_INPUT_LEDS) && IS_ENABLED(CONFIG_LEDS_TRIGGERS)
985
986struct kbd_led_trigger {
987 struct led_trigger trigger;
988 unsigned int mask;
989};
990
991static int kbd_led_trigger_activate(struct led_classdev *cdev)
992{
993 struct kbd_led_trigger *trigger =
994 container_of(cdev->trigger, struct kbd_led_trigger, trigger);
995
996 tasklet_disable(&keyboard_tasklet);
997 if (ledstate != -1U)
998 led_trigger_event(&trigger->trigger,
999 ledstate & trigger->mask ?
1000 LED_FULL : LED_OFF);
1001 tasklet_enable(&keyboard_tasklet);
1002
1003 return 0;
1004}
1005
1006#define KBD_LED_TRIGGER(_led_bit, _name) { \
1007 .trigger = { \
1008 .name = _name, \
1009 .activate = kbd_led_trigger_activate, \
1010 }, \
1011 .mask = BIT(_led_bit), \
1012 }
1013
1014#define KBD_LOCKSTATE_TRIGGER(_led_bit, _name) \
1015 KBD_LED_TRIGGER((_led_bit) + 8, _name)
1016
1017static struct kbd_led_trigger kbd_led_triggers[] = {
1018 KBD_LED_TRIGGER(VC_SCROLLOCK, "kbd-scrolllock"),
1019 KBD_LED_TRIGGER(VC_NUMLOCK, "kbd-numlock"),
1020 KBD_LED_TRIGGER(VC_CAPSLOCK, "kbd-capslock"),
1021 KBD_LED_TRIGGER(VC_KANALOCK, "kbd-kanalock"),
1022
1023 KBD_LOCKSTATE_TRIGGER(VC_SHIFTLOCK, "kbd-shiftlock"),
1024 KBD_LOCKSTATE_TRIGGER(VC_ALTGRLOCK, "kbd-altgrlock"),
1025 KBD_LOCKSTATE_TRIGGER(VC_CTRLLOCK, "kbd-ctrllock"),
1026 KBD_LOCKSTATE_TRIGGER(VC_ALTLOCK, "kbd-altlock"),
1027 KBD_LOCKSTATE_TRIGGER(VC_SHIFTLLOCK, "kbd-shiftllock"),
1028 KBD_LOCKSTATE_TRIGGER(VC_SHIFTRLOCK, "kbd-shiftrlock"),
1029 KBD_LOCKSTATE_TRIGGER(VC_CTRLLLOCK, "kbd-ctrlllock"),
1030 KBD_LOCKSTATE_TRIGGER(VC_CTRLRLOCK, "kbd-ctrlrlock"),
1031};
1032
1033static void kbd_propagate_led_state(unsigned int old_state,
1034 unsigned int new_state)
1035{
1036 struct kbd_led_trigger *trigger;
1037 unsigned int changed = old_state ^ new_state;
1038 int i;
1039
1040 for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); i++) {
1041 trigger = &kbd_led_triggers[i];
1042
1043 if (changed & trigger->mask)
1044 led_trigger_event(&trigger->trigger,
1045 new_state & trigger->mask ?
1046 LED_FULL : LED_OFF);
1047 }
1048}
1049
1050static int kbd_update_leds_helper(struct input_handle *handle, void *data)
1051{
1052 unsigned int led_state = *(unsigned int *)data;
1053
1054 if (test_bit(EV_LED, handle->dev->evbit))
1055 kbd_propagate_led_state(~led_state, led_state);
1056
1057 return 0;
1058}
1059
1060static void kbd_init_leds(void)
1061{
1062 int error;
1063 int i;
1064
1065 for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); i++) {
1066 error = led_trigger_register(&kbd_led_triggers[i].trigger);
1067 if (error)
1068 pr_err("error %d while registering trigger %s\n",
1069 error, kbd_led_triggers[i].trigger.name);
1070 }
1071}
1072
1073#else
1074
1075static int kbd_update_leds_helper(struct input_handle *handle, void *data)
1076{
1077 unsigned int leds = *(unsigned int *)data;
1078
1079 if (test_bit(EV_LED, handle->dev->evbit)) {
1080 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1081 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1082 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1083 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1084 }
1085
1086 return 0;
1087}
1088
1089static void kbd_propagate_led_state(unsigned int old_state,
1090 unsigned int new_state)
1091{
1092 input_handler_for_each_handle(&kbd_handler, &new_state,
1093 kbd_update_leds_helper);
1094}
1095
1096static void kbd_init_leds(void)
1097{
1098}
1099
1100#endif
1101
1102
1103
1104
1105
1106
1107static unsigned char getledstate(void)
1108{
1109 return ledstate & 0xff;
1110}
1111
1112void setledstate(struct kbd_struct *kb, unsigned int led)
1113{
1114 unsigned long flags;
1115 spin_lock_irqsave(&led_lock, flags);
1116 if (!(led & ~7)) {
1117 ledioctl = led;
1118 kb->ledmode = LED_SHOW_IOCTL;
1119 } else
1120 kb->ledmode = LED_SHOW_FLAGS;
1121
1122 set_leds();
1123 spin_unlock_irqrestore(&led_lock, flags);
1124}
1125
1126static inline unsigned char getleds(void)
1127{
1128 struct kbd_struct *kb = kbd_table + fg_console;
1129
1130 if (kb->ledmode == LED_SHOW_IOCTL)
1131 return ledioctl;
1132
1133 return kb->ledflagstate;
1134}
1135
1136
1137
1138
1139
1140
1141
1142
1143int vt_get_leds(int console, int flag)
1144{
1145 struct kbd_struct *kb = kbd_table + console;
1146 int ret;
1147 unsigned long flags;
1148
1149 spin_lock_irqsave(&led_lock, flags);
1150 ret = vc_kbd_led(kb, flag);
1151 spin_unlock_irqrestore(&led_lock, flags);
1152
1153 return ret;
1154}
1155EXPORT_SYMBOL_GPL(vt_get_leds);
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165void vt_set_led_state(int console, int leds)
1166{
1167 struct kbd_struct *kb = kbd_table + console;
1168 setledstate(kb, leds);
1169}
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184void vt_kbd_con_start(int console)
1185{
1186 struct kbd_struct *kb = kbd_table + console;
1187 unsigned long flags;
1188 spin_lock_irqsave(&led_lock, flags);
1189 clr_vc_kbd_led(kb, VC_SCROLLOCK);
1190 set_leds();
1191 spin_unlock_irqrestore(&led_lock, flags);
1192}
1193
1194
1195
1196
1197
1198
1199
1200
1201void vt_kbd_con_stop(int console)
1202{
1203 struct kbd_struct *kb = kbd_table + console;
1204 unsigned long flags;
1205 spin_lock_irqsave(&led_lock, flags);
1206 set_vc_kbd_led(kb, VC_SCROLLOCK);
1207 set_leds();
1208 spin_unlock_irqrestore(&led_lock, flags);
1209}
1210
1211
1212
1213
1214
1215
1216
1217static void kbd_bh(unsigned long dummy)
1218{
1219 unsigned int leds;
1220 unsigned long flags;
1221
1222 spin_lock_irqsave(&led_lock, flags);
1223 leds = getleds();
1224 leds |= (unsigned int)kbd->lockstate << 8;
1225 spin_unlock_irqrestore(&led_lock, flags);
1226
1227 if (leds != ledstate) {
1228 kbd_propagate_led_state(ledstate, leds);
1229 ledstate = leds;
1230 }
1231}
1232
1233DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1234
1235#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1236 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1237 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1238 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
1239
1240#define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1241 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1242
1243static const unsigned short x86_keycodes[256] =
1244 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1245 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1246 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1247 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1248 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1249 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1250 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1251 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1252 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1253 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1254 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1255 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1256 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1257 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1258 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1259
1260#ifdef CONFIG_SPARC
1261static int sparc_l1_a_state;
1262extern void sun_do_break(void);
1263#endif
1264
1265static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1266 unsigned char up_flag)
1267{
1268 int code;
1269
1270 switch (keycode) {
1271
1272 case KEY_PAUSE:
1273 put_queue(vc, 0xe1);
1274 put_queue(vc, 0x1d | up_flag);
1275 put_queue(vc, 0x45 | up_flag);
1276 break;
1277
1278 case KEY_HANGEUL:
1279 if (!up_flag)
1280 put_queue(vc, 0xf2);
1281 break;
1282
1283 case KEY_HANJA:
1284 if (!up_flag)
1285 put_queue(vc, 0xf1);
1286 break;
1287
1288 case KEY_SYSRQ:
1289
1290
1291
1292
1293
1294
1295 if (test_bit(KEY_LEFTALT, key_down) ||
1296 test_bit(KEY_RIGHTALT, key_down)) {
1297 put_queue(vc, 0x54 | up_flag);
1298 } else {
1299 put_queue(vc, 0xe0);
1300 put_queue(vc, 0x2a | up_flag);
1301 put_queue(vc, 0xe0);
1302 put_queue(vc, 0x37 | up_flag);
1303 }
1304 break;
1305
1306 default:
1307 if (keycode > 255)
1308 return -1;
1309
1310 code = x86_keycodes[keycode];
1311 if (!code)
1312 return -1;
1313
1314 if (code & 0x100)
1315 put_queue(vc, 0xe0);
1316 put_queue(vc, (code & 0x7f) | up_flag);
1317
1318 break;
1319 }
1320
1321 return 0;
1322}
1323
1324#else
1325
1326#define HW_RAW(dev) 0
1327
1328static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1329{
1330 if (keycode > 127)
1331 return -1;
1332
1333 put_queue(vc, keycode | up_flag);
1334 return 0;
1335}
1336#endif
1337
1338static void kbd_rawcode(unsigned char data)
1339{
1340 struct vc_data *vc = vc_cons[fg_console].d;
1341
1342 kbd = kbd_table + vc->vc_num;
1343 if (kbd->kbdmode == VC_RAW)
1344 put_queue(vc, data);
1345}
1346
1347static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1348{
1349 struct vc_data *vc = vc_cons[fg_console].d;
1350 unsigned short keysym, *key_map;
1351 unsigned char type;
1352 bool raw_mode;
1353 struct tty_struct *tty;
1354 int shift_final;
1355 struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1356 int rc;
1357
1358 tty = vc->port.tty;
1359
1360 if (tty && (!tty->driver_data)) {
1361
1362 tty->driver_data = vc;
1363 }
1364
1365 kbd = kbd_table + vc->vc_num;
1366
1367#ifdef CONFIG_SPARC
1368 if (keycode == KEY_STOP)
1369 sparc_l1_a_state = down;
1370#endif
1371
1372 rep = (down == 2);
1373
1374 raw_mode = (kbd->kbdmode == VC_RAW);
1375 if (raw_mode && !hw_raw)
1376 if (emulate_raw(vc, keycode, !down << 7))
1377 if (keycode < BTN_MISC && printk_ratelimit())
1378 pr_warn("can't emulate rawmode for keycode %d\n",
1379 keycode);
1380
1381#ifdef CONFIG_SPARC
1382 if (keycode == KEY_A && sparc_l1_a_state) {
1383 sparc_l1_a_state = false;
1384 sun_do_break();
1385 }
1386#endif
1387
1388 if (kbd->kbdmode == VC_MEDIUMRAW) {
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398 if (keycode < 128) {
1399 put_queue(vc, keycode | (!down << 7));
1400 } else {
1401 put_queue(vc, !down << 7);
1402 put_queue(vc, (keycode >> 7) | 0x80);
1403 put_queue(vc, keycode | 0x80);
1404 }
1405 raw_mode = true;
1406 }
1407
1408 if (down)
1409 set_bit(keycode, key_down);
1410 else
1411 clear_bit(keycode, key_down);
1412
1413 if (rep &&
1414 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1415 (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) {
1416
1417
1418
1419
1420
1421 return;
1422 }
1423
1424 param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1425 param.ledstate = kbd->ledflagstate;
1426 key_map = key_maps[shift_final];
1427
1428 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1429 KBD_KEYCODE, ¶m);
1430 if (rc == NOTIFY_STOP || !key_map) {
1431 atomic_notifier_call_chain(&keyboard_notifier_list,
1432 KBD_UNBOUND_KEYCODE, ¶m);
1433 do_compute_shiftstate();
1434 kbd->slockstate = 0;
1435 return;
1436 }
1437
1438 if (keycode < NR_KEYS)
1439 keysym = key_map[keycode];
1440 else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1441 keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
1442 else
1443 return;
1444
1445 type = KTYP(keysym);
1446
1447 if (type < 0xf0) {
1448 param.value = keysym;
1449 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1450 KBD_UNICODE, ¶m);
1451 if (rc != NOTIFY_STOP)
1452 if (down && !raw_mode)
1453 k_unicode(vc, keysym, !down);
1454 return;
1455 }
1456
1457 type -= 0xf0;
1458
1459 if (type == KT_LETTER) {
1460 type = KT_LATIN;
1461 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1462 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1463 if (key_map)
1464 keysym = key_map[keycode];
1465 }
1466 }
1467
1468 param.value = keysym;
1469 rc = atomic_notifier_call_chain(&keyboard_notifier_list,
1470 KBD_KEYSYM, ¶m);
1471 if (rc == NOTIFY_STOP)
1472 return;
1473
1474 if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT)
1475 return;
1476
1477 (*k_handler[type])(vc, keysym & 0xff, !down);
1478
1479 param.ledstate = kbd->ledflagstate;
1480 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m);
1481
1482 if (type != KT_SLOCK)
1483 kbd->slockstate = 0;
1484}
1485
1486static void kbd_event(struct input_handle *handle, unsigned int event_type,
1487 unsigned int event_code, int value)
1488{
1489
1490 spin_lock(&kbd_event_lock);
1491
1492 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1493 kbd_rawcode(value);
1494 if (event_type == EV_KEY)
1495 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1496
1497 spin_unlock(&kbd_event_lock);
1498
1499 tasklet_schedule(&keyboard_tasklet);
1500 do_poke_blanked_console = 1;
1501 schedule_console_callback();
1502}
1503
1504static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
1505{
1506 int i;
1507
1508 if (test_bit(EV_SND, dev->evbit))
1509 return true;
1510
1511 if (test_bit(EV_KEY, dev->evbit)) {
1512 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1513 if (test_bit(i, dev->keybit))
1514 return true;
1515 for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++)
1516 if (test_bit(i, dev->keybit))
1517 return true;
1518 }
1519
1520 return false;
1521}
1522
1523
1524
1525
1526
1527
1528
1529static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1530 const struct input_device_id *id)
1531{
1532 struct input_handle *handle;
1533 int error;
1534
1535 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1536 if (!handle)
1537 return -ENOMEM;
1538
1539 handle->dev = dev;
1540 handle->handler = handler;
1541 handle->name = "kbd";
1542
1543 error = input_register_handle(handle);
1544 if (error)
1545 goto err_free_handle;
1546
1547 error = input_open_device(handle);
1548 if (error)
1549 goto err_unregister_handle;
1550
1551 return 0;
1552
1553 err_unregister_handle:
1554 input_unregister_handle(handle);
1555 err_free_handle:
1556 kfree(handle);
1557 return error;
1558}
1559
1560static void kbd_disconnect(struct input_handle *handle)
1561{
1562 input_close_device(handle);
1563 input_unregister_handle(handle);
1564 kfree(handle);
1565}
1566
1567
1568
1569
1570
1571static void kbd_start(struct input_handle *handle)
1572{
1573 tasklet_disable(&keyboard_tasklet);
1574
1575 if (ledstate != -1U)
1576 kbd_update_leds_helper(handle, &ledstate);
1577
1578 tasklet_enable(&keyboard_tasklet);
1579}
1580
1581static const struct input_device_id kbd_ids[] = {
1582 {
1583 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1584 .evbit = { BIT_MASK(EV_KEY) },
1585 },
1586
1587 {
1588 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1589 .evbit = { BIT_MASK(EV_SND) },
1590 },
1591
1592 { },
1593};
1594
1595MODULE_DEVICE_TABLE(input, kbd_ids);
1596
1597static struct input_handler kbd_handler = {
1598 .event = kbd_event,
1599 .match = kbd_match,
1600 .connect = kbd_connect,
1601 .disconnect = kbd_disconnect,
1602 .start = kbd_start,
1603 .name = "kbd",
1604 .id_table = kbd_ids,
1605};
1606
1607int __init kbd_init(void)
1608{
1609 int i;
1610 int error;
1611
1612 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1613 kbd_table[i].ledflagstate = kbd_defleds();
1614 kbd_table[i].default_ledflagstate = kbd_defleds();
1615 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1616 kbd_table[i].lockstate = KBD_DEFLOCK;
1617 kbd_table[i].slockstate = 0;
1618 kbd_table[i].modeflags = KBD_DEFMODE;
1619 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1620 }
1621
1622 kbd_init_leds();
1623
1624 error = input_register_handler(&kbd_handler);
1625 if (error)
1626 return error;
1627
1628 tasklet_enable(&keyboard_tasklet);
1629 tasklet_schedule(&keyboard_tasklet);
1630
1631 return 0;
1632}
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645int vt_do_diacrit(unsigned int cmd, void __user *udp, int perm)
1646{
1647 unsigned long flags;
1648 int asize;
1649 int ret = 0;
1650
1651 switch (cmd) {
1652 case KDGKBDIACR:
1653 {
1654 struct kbdiacrs __user *a = udp;
1655 struct kbdiacr *dia;
1656 int i;
1657
1658 dia = kmalloc_array(MAX_DIACR, sizeof(struct kbdiacr),
1659 GFP_KERNEL);
1660 if (!dia)
1661 return -ENOMEM;
1662
1663
1664
1665 spin_lock_irqsave(&kbd_event_lock, flags);
1666
1667 asize = accent_table_size;
1668 for (i = 0; i < asize; i++) {
1669 dia[i].diacr = conv_uni_to_8bit(
1670 accent_table[i].diacr);
1671 dia[i].base = conv_uni_to_8bit(
1672 accent_table[i].base);
1673 dia[i].result = conv_uni_to_8bit(
1674 accent_table[i].result);
1675 }
1676 spin_unlock_irqrestore(&kbd_event_lock, flags);
1677
1678 if (put_user(asize, &a->kb_cnt))
1679 ret = -EFAULT;
1680 else if (copy_to_user(a->kbdiacr, dia,
1681 asize * sizeof(struct kbdiacr)))
1682 ret = -EFAULT;
1683 kfree(dia);
1684 return ret;
1685 }
1686 case KDGKBDIACRUC:
1687 {
1688 struct kbdiacrsuc __user *a = udp;
1689 void *buf;
1690
1691 buf = kmalloc_array(MAX_DIACR, sizeof(struct kbdiacruc),
1692 GFP_KERNEL);
1693 if (buf == NULL)
1694 return -ENOMEM;
1695
1696
1697
1698 spin_lock_irqsave(&kbd_event_lock, flags);
1699
1700 asize = accent_table_size;
1701 memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc));
1702
1703 spin_unlock_irqrestore(&kbd_event_lock, flags);
1704
1705 if (put_user(asize, &a->kb_cnt))
1706 ret = -EFAULT;
1707 else if (copy_to_user(a->kbdiacruc, buf,
1708 asize*sizeof(struct kbdiacruc)))
1709 ret = -EFAULT;
1710 kfree(buf);
1711 return ret;
1712 }
1713
1714 case KDSKBDIACR:
1715 {
1716 struct kbdiacrs __user *a = udp;
1717 struct kbdiacr *dia = NULL;
1718 unsigned int ct;
1719 int i;
1720
1721 if (!perm)
1722 return -EPERM;
1723 if (get_user(ct, &a->kb_cnt))
1724 return -EFAULT;
1725 if (ct >= MAX_DIACR)
1726 return -EINVAL;
1727
1728 if (ct) {
1729
1730 dia = memdup_user(a->kbdiacr,
1731 sizeof(struct kbdiacr) * ct);
1732 if (IS_ERR(dia))
1733 return PTR_ERR(dia);
1734
1735 }
1736
1737 spin_lock_irqsave(&kbd_event_lock, flags);
1738 accent_table_size = ct;
1739 for (i = 0; i < ct; i++) {
1740 accent_table[i].diacr =
1741 conv_8bit_to_uni(dia[i].diacr);
1742 accent_table[i].base =
1743 conv_8bit_to_uni(dia[i].base);
1744 accent_table[i].result =
1745 conv_8bit_to_uni(dia[i].result);
1746 }
1747 spin_unlock_irqrestore(&kbd_event_lock, flags);
1748 kfree(dia);
1749 return 0;
1750 }
1751
1752 case KDSKBDIACRUC:
1753 {
1754 struct kbdiacrsuc __user *a = udp;
1755 unsigned int ct;
1756 void *buf = NULL;
1757
1758 if (!perm)
1759 return -EPERM;
1760
1761 if (get_user(ct, &a->kb_cnt))
1762 return -EFAULT;
1763
1764 if (ct >= MAX_DIACR)
1765 return -EINVAL;
1766
1767 if (ct) {
1768 buf = memdup_user(a->kbdiacruc,
1769 ct * sizeof(struct kbdiacruc));
1770 if (IS_ERR(buf))
1771 return PTR_ERR(buf);
1772 }
1773 spin_lock_irqsave(&kbd_event_lock, flags);
1774 if (ct)
1775 memcpy(accent_table, buf,
1776 ct * sizeof(struct kbdiacruc));
1777 accent_table_size = ct;
1778 spin_unlock_irqrestore(&kbd_event_lock, flags);
1779 kfree(buf);
1780 return 0;
1781 }
1782 }
1783 return ret;
1784}
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794int vt_do_kdskbmode(int console, unsigned int arg)
1795{
1796 struct kbd_struct *kb = kbd_table + console;
1797 int ret = 0;
1798 unsigned long flags;
1799
1800 spin_lock_irqsave(&kbd_event_lock, flags);
1801 switch(arg) {
1802 case K_RAW:
1803 kb->kbdmode = VC_RAW;
1804 break;
1805 case K_MEDIUMRAW:
1806 kb->kbdmode = VC_MEDIUMRAW;
1807 break;
1808 case K_XLATE:
1809 kb->kbdmode = VC_XLATE;
1810 do_compute_shiftstate();
1811 break;
1812 case K_UNICODE:
1813 kb->kbdmode = VC_UNICODE;
1814 do_compute_shiftstate();
1815 break;
1816 case K_OFF:
1817 kb->kbdmode = VC_OFF;
1818 break;
1819 default:
1820 ret = -EINVAL;
1821 }
1822 spin_unlock_irqrestore(&kbd_event_lock, flags);
1823 return ret;
1824}
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834int vt_do_kdskbmeta(int console, unsigned int arg)
1835{
1836 struct kbd_struct *kb = kbd_table + console;
1837 int ret = 0;
1838 unsigned long flags;
1839
1840 spin_lock_irqsave(&kbd_event_lock, flags);
1841 switch(arg) {
1842 case K_METABIT:
1843 clr_vc_kbd_mode(kb, VC_META);
1844 break;
1845 case K_ESCPREFIX:
1846 set_vc_kbd_mode(kb, VC_META);
1847 break;
1848 default:
1849 ret = -EINVAL;
1850 }
1851 spin_unlock_irqrestore(&kbd_event_lock, flags);
1852 return ret;
1853}
1854
1855int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
1856 int perm)
1857{
1858 struct kbkeycode tmp;
1859 int kc = 0;
1860
1861 if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode)))
1862 return -EFAULT;
1863 switch (cmd) {
1864 case KDGETKEYCODE:
1865 kc = getkeycode(tmp.scancode);
1866 if (kc >= 0)
1867 kc = put_user(kc, &user_kbkc->keycode);
1868 break;
1869 case KDSETKEYCODE:
1870 if (!perm)
1871 return -EPERM;
1872 kc = setkeycode(tmp.scancode, tmp.keycode);
1873 break;
1874 }
1875 return kc;
1876}
1877
1878#define i (tmp.kb_index)
1879#define s (tmp.kb_table)
1880#define v (tmp.kb_value)
1881
1882int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
1883 int console)
1884{
1885 struct kbd_struct *kb = kbd_table + console;
1886 struct kbentry tmp;
1887 ushort *key_map, *new_map, val, ov;
1888 unsigned long flags;
1889
1890 if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
1891 return -EFAULT;
1892
1893 if (!capable(CAP_SYS_TTY_CONFIG))
1894 perm = 0;
1895
1896 switch (cmd) {
1897 case KDGKBENT:
1898
1899 spin_lock_irqsave(&kbd_event_lock, flags);
1900 key_map = key_maps[s];
1901 if (key_map) {
1902 val = U(key_map[i]);
1903 if (kb->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES)
1904 val = K_HOLE;
1905 } else
1906 val = (i ? K_HOLE : K_NOSUCHMAP);
1907 spin_unlock_irqrestore(&kbd_event_lock, flags);
1908 return put_user(val, &user_kbe->kb_value);
1909 case KDSKBENT:
1910 if (!perm)
1911 return -EPERM;
1912 if (!i && v == K_NOSUCHMAP) {
1913 spin_lock_irqsave(&kbd_event_lock, flags);
1914
1915 key_map = key_maps[s];
1916 if (s && key_map) {
1917 key_maps[s] = NULL;
1918 if (key_map[0] == U(K_ALLOCATED)) {
1919 kfree(key_map);
1920 keymap_count--;
1921 }
1922 }
1923 spin_unlock_irqrestore(&kbd_event_lock, flags);
1924 break;
1925 }
1926
1927 if (KTYP(v) < NR_TYPES) {
1928 if (KVAL(v) > max_vals[KTYP(v)])
1929 return -EINVAL;
1930 } else
1931 if (kb->kbdmode != VC_UNICODE)
1932 return -EINVAL;
1933
1934
1935#if !defined(__mc68000__) && !defined(__powerpc__)
1936
1937 if (!i)
1938 break;
1939#endif
1940
1941 new_map = kmalloc(sizeof(plain_map), GFP_KERNEL);
1942 if (!new_map)
1943 return -ENOMEM;
1944 spin_lock_irqsave(&kbd_event_lock, flags);
1945 key_map = key_maps[s];
1946 if (key_map == NULL) {
1947 int j;
1948
1949 if (keymap_count >= MAX_NR_OF_USER_KEYMAPS &&
1950 !capable(CAP_SYS_RESOURCE)) {
1951 spin_unlock_irqrestore(&kbd_event_lock, flags);
1952 kfree(new_map);
1953 return -EPERM;
1954 }
1955 key_maps[s] = new_map;
1956 key_map = new_map;
1957 key_map[0] = U(K_ALLOCATED);
1958 for (j = 1; j < NR_KEYS; j++)
1959 key_map[j] = U(K_HOLE);
1960 keymap_count++;
1961 } else
1962 kfree(new_map);
1963
1964 ov = U(key_map[i]);
1965 if (v == ov)
1966 goto out;
1967
1968
1969
1970 if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) {
1971 spin_unlock_irqrestore(&kbd_event_lock, flags);
1972 return -EPERM;
1973 }
1974 key_map[i] = U(v);
1975 if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT))
1976 do_compute_shiftstate();
1977out:
1978 spin_unlock_irqrestore(&kbd_event_lock, flags);
1979 break;
1980 }
1981 return 0;
1982}
1983#undef i
1984#undef s
1985#undef v
1986
1987
1988int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
1989{
1990 struct kbsentry *kbs;
1991 char *p;
1992 u_char *q;
1993 u_char __user *up;
1994 int sz, fnw_sz;
1995 int delta;
1996 char *first_free, *fj, *fnw;
1997 int i, j, k;
1998 int ret;
1999 unsigned long flags;
2000
2001 if (!capable(CAP_SYS_TTY_CONFIG))
2002 perm = 0;
2003
2004 kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
2005 if (!kbs) {
2006 ret = -ENOMEM;
2007 goto reterr;
2008 }
2009
2010
2011 if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) {
2012 ret = -EFAULT;
2013 goto reterr;
2014 }
2015 kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0';
2016 i = kbs->kb_func;
2017
2018 switch (cmd) {
2019 case KDGKBSENT:
2020 sz = sizeof(kbs->kb_string) - 1;
2021
2022 up = user_kdgkb->kb_string;
2023 p = func_table[i];
2024 if(p)
2025 for ( ; *p && sz; p++, sz--)
2026 if (put_user(*p, up++)) {
2027 ret = -EFAULT;
2028 goto reterr;
2029 }
2030 if (put_user('\0', up)) {
2031 ret = -EFAULT;
2032 goto reterr;
2033 }
2034 kfree(kbs);
2035 return ((p && *p) ? -EOVERFLOW : 0);
2036 case KDSKBSENT:
2037 if (!perm) {
2038 ret = -EPERM;
2039 goto reterr;
2040 }
2041
2042 fnw = NULL;
2043 fnw_sz = 0;
2044
2045 again:
2046 spin_lock_irqsave(&func_buf_lock, flags);
2047 q = func_table[i];
2048
2049
2050 first_free = funcbufptr + (funcbufsize - funcbufleft);
2051 for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++)
2052 ;
2053 if (j < MAX_NR_FUNC)
2054 fj = func_table[j];
2055 else
2056 fj = first_free;
2057
2058 delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string);
2059
2060 if (delta <= funcbufleft) {
2061 if (j < MAX_NR_FUNC) {
2062
2063 memmove(fj + delta, fj, first_free - fj);
2064 for (k = j; k < MAX_NR_FUNC; k++)
2065 if (func_table[k])
2066 func_table[k] += delta;
2067 }
2068 if (!q)
2069 func_table[i] = fj;
2070 funcbufleft -= delta;
2071 } else {
2072 sz = 256;
2073 while (sz < funcbufsize - funcbufleft + delta)
2074 sz <<= 1;
2075 if (fnw_sz != sz) {
2076 spin_unlock_irqrestore(&func_buf_lock, flags);
2077 kfree(fnw);
2078 fnw = kmalloc(sz, GFP_KERNEL);
2079 fnw_sz = sz;
2080 if (!fnw) {
2081 ret = -ENOMEM;
2082 goto reterr;
2083 }
2084 goto again;
2085 }
2086
2087 if (!q)
2088 func_table[i] = fj;
2089
2090 if (fj > funcbufptr)
2091 memmove(fnw, funcbufptr, fj - funcbufptr);
2092 for (k = 0; k < j; k++)
2093 if (func_table[k])
2094 func_table[k] = fnw + (func_table[k] - funcbufptr);
2095
2096
2097 if (first_free > fj) {
2098 memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj);
2099 for (k = j; k < MAX_NR_FUNC; k++)
2100 if (func_table[k])
2101 func_table[k] = fnw + (func_table[k] - funcbufptr) + delta;
2102 }
2103 if (funcbufptr != func_buf)
2104 kfree(funcbufptr);
2105 funcbufptr = fnw;
2106 funcbufleft = funcbufleft - delta + sz - funcbufsize;
2107 funcbufsize = sz;
2108 }
2109
2110 strcpy(func_table[i], kbs->kb_string);
2111 spin_unlock_irqrestore(&func_buf_lock, flags);
2112 break;
2113 }
2114 ret = 0;
2115reterr:
2116 kfree(kbs);
2117 return ret;
2118}
2119
2120int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm)
2121{
2122 struct kbd_struct *kb = kbd_table + console;
2123 unsigned long flags;
2124 unsigned char ucval;
2125
2126 switch(cmd) {
2127
2128
2129 case KDGKBLED:
2130 spin_lock_irqsave(&kbd_event_lock, flags);
2131 ucval = kb->ledflagstate | (kb->default_ledflagstate << 4);
2132 spin_unlock_irqrestore(&kbd_event_lock, flags);
2133 return put_user(ucval, (char __user *)arg);
2134
2135 case KDSKBLED:
2136 if (!perm)
2137 return -EPERM;
2138 if (arg & ~0x77)
2139 return -EINVAL;
2140 spin_lock_irqsave(&led_lock, flags);
2141 kb->ledflagstate = (arg & 7);
2142 kb->default_ledflagstate = ((arg >> 4) & 7);
2143 set_leds();
2144 spin_unlock_irqrestore(&led_lock, flags);
2145 return 0;
2146
2147
2148
2149 case KDGETLED:
2150 ucval = getledstate();
2151 return put_user(ucval, (char __user *)arg);
2152
2153 case KDSETLED:
2154 if (!perm)
2155 return -EPERM;
2156 setledstate(kb, arg);
2157 return 0;
2158 }
2159 return -ENOIOCTLCMD;
2160}
2161
2162int vt_do_kdgkbmode(int console)
2163{
2164 struct kbd_struct *kb = kbd_table + console;
2165
2166 switch (kb->kbdmode) {
2167 case VC_RAW:
2168 return K_RAW;
2169 case VC_MEDIUMRAW:
2170 return K_MEDIUMRAW;
2171 case VC_UNICODE:
2172 return K_UNICODE;
2173 case VC_OFF:
2174 return K_OFF;
2175 default:
2176 return K_XLATE;
2177 }
2178}
2179
2180
2181
2182
2183
2184
2185
2186int vt_do_kdgkbmeta(int console)
2187{
2188 struct kbd_struct *kb = kbd_table + console;
2189
2190 return vc_kbd_mode(kb, VC_META) ? K_ESCPREFIX : K_METABIT;
2191}
2192
2193
2194
2195
2196
2197
2198
2199void vt_reset_unicode(int console)
2200{
2201 unsigned long flags;
2202
2203 spin_lock_irqsave(&kbd_event_lock, flags);
2204 kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
2205 spin_unlock_irqrestore(&kbd_event_lock, flags);
2206}
2207
2208
2209
2210
2211
2212
2213
2214int vt_get_shift_state(void)
2215{
2216
2217 return shift_state;
2218}
2219
2220
2221
2222
2223
2224
2225
2226
2227void vt_reset_keyboard(int console)
2228{
2229 struct kbd_struct *kb = kbd_table + console;
2230 unsigned long flags;
2231
2232 spin_lock_irqsave(&kbd_event_lock, flags);
2233 set_vc_kbd_mode(kb, VC_REPEAT);
2234 clr_vc_kbd_mode(kb, VC_CKMODE);
2235 clr_vc_kbd_mode(kb, VC_APPLIC);
2236 clr_vc_kbd_mode(kb, VC_CRLF);
2237 kb->lockstate = 0;
2238 kb->slockstate = 0;
2239 spin_lock(&led_lock);
2240 kb->ledmode = LED_SHOW_FLAGS;
2241 kb->ledflagstate = kb->default_ledflagstate;
2242 spin_unlock(&led_lock);
2243
2244
2245 spin_unlock_irqrestore(&kbd_event_lock, flags);
2246}
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257int vt_get_kbd_mode_bit(int console, int bit)
2258{
2259 struct kbd_struct *kb = kbd_table + console;
2260 return vc_kbd_mode(kb, bit);
2261}
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272void vt_set_kbd_mode_bit(int console, int bit)
2273{
2274 struct kbd_struct *kb = kbd_table + console;
2275 unsigned long flags;
2276
2277 spin_lock_irqsave(&kbd_event_lock, flags);
2278 set_vc_kbd_mode(kb, bit);
2279 spin_unlock_irqrestore(&kbd_event_lock, flags);
2280}
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291void vt_clr_kbd_mode_bit(int console, int bit)
2292{
2293 struct kbd_struct *kb = kbd_table + console;
2294 unsigned long flags;
2295
2296 spin_lock_irqsave(&kbd_event_lock, flags);
2297 clr_vc_kbd_mode(kb, bit);
2298 spin_unlock_irqrestore(&kbd_event_lock, flags);
2299}
2300