Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Written for linux by Johan Myreen as a translation from |
3 | * the assembly version by Linus (with diacriticals added) | |
4 | * | |
5 | * Some additional features added by Christoph Niemann (ChN), March 1993 | |
6 | * | |
7 | * Loadable keymaps by Risto Kankkunen, May 1993 | |
8 | * | |
9 | * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993 | |
10 | * Added decr/incr_console, dynamic keymaps, Unicode support, | |
11 | * dynamic function/string keys, led setting, Sept 1994 | |
12 | * `Sticky' modifier keys, 951006. | |
13 | * | |
14 | * 11-11-96: SAK should now work in the raw mode (Martin Mares) | |
fe1e8604 | 15 | * |
1da177e4 LT |
16 | * Modified to provide 'generic' keyboard support by Hamish Macdonald |
17 | * Merge with the m68k keyboard driver and split-off of the PC low-level | |
18 | * parts by Geert Uytterhoeven, May 1997 | |
19 | * | |
20 | * 27-05-97: Added support for the Magic SysRq Key (Martin Mares) | |
21 | * 30-07-98: Dead keys redone, aeb@cwi.nl. | |
22 | * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik) | |
23 | */ | |
24 | ||
9272e9a2 DT |
25 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
26 | ||
759448f4 | 27 | #include <linux/consolemap.h> |
1da177e4 LT |
28 | #include <linux/module.h> |
29 | #include <linux/sched.h> | |
30 | #include <linux/tty.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/mm.h> | |
33 | #include <linux/string.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/slab.h> | |
36 | ||
37 | #include <linux/kbd_kern.h> | |
38 | #include <linux/kbd_diacr.h> | |
39 | #include <linux/vt_kern.h> | |
1da177e4 | 40 | #include <linux/input.h> |
83cc5ed3 | 41 | #include <linux/reboot.h> |
41ab4396 | 42 | #include <linux/notifier.h> |
b39b0440 | 43 | #include <linux/jiffies.h> |
6623d640 | 44 | #include <linux/uaccess.h> |
1da177e4 | 45 | |
98c2b373 GU |
46 | #include <asm/irq_regs.h> |
47 | ||
1da177e4 LT |
48 | extern void ctrl_alt_del(void); |
49 | ||
50 | /* | |
51 | * Exported functions/variables | |
52 | */ | |
53 | ||
54 | #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META)) | |
55 | ||
b2d0b7a0 JC |
56 | #if defined(CONFIG_X86) || defined(CONFIG_PARISC) |
57 | #include <asm/kbdleds.h> | |
1da177e4 | 58 | #else |
b2d0b7a0 JC |
59 | static inline int kbd_defleds(void) |
60 | { | |
61 | return 0; | |
62 | } | |
1da177e4 LT |
63 | #endif |
64 | ||
65 | #define KBD_DEFLOCK 0 | |
66 | ||
1da177e4 LT |
67 | /* |
68 | * Handler Tables. | |
69 | */ | |
70 | ||
71 | #define K_HANDLERS\ | |
72 | k_self, k_fn, k_spec, k_pad,\ | |
73 | k_dead, k_cons, k_cur, k_shift,\ | |
74 | k_meta, k_ascii, k_lock, k_lowercase,\ | |
b9ec4e10 | 75 | k_slock, k_dead2, k_brl, k_ignore |
1da177e4 | 76 | |
fe1e8604 | 77 | typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value, |
7d12e780 | 78 | char up_flag); |
1da177e4 | 79 | static k_handler_fn K_HANDLERS; |
97f5f0cd | 80 | static k_handler_fn *k_handler[16] = { K_HANDLERS }; |
1da177e4 LT |
81 | |
82 | #define FN_HANDLERS\ | |
fe1e8604 DT |
83 | fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\ |
84 | fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\ | |
85 | fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\ | |
86 | fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\ | |
87 | fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num | |
1da177e4 | 88 | |
7d12e780 | 89 | typedef void (fn_handler_fn)(struct vc_data *vc); |
1da177e4 LT |
90 | static fn_handler_fn FN_HANDLERS; |
91 | static fn_handler_fn *fn_handler[] = { FN_HANDLERS }; | |
92 | ||
93 | /* | |
94 | * Variables exported for vt_ioctl.c | |
95 | */ | |
96 | ||
81af8d67 | 97 | struct vt_spawn_console vt_spawn_con = { |
ccc94256 | 98 | .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock), |
81af8d67 EB |
99 | .pid = NULL, |
100 | .sig = 0, | |
101 | }; | |
1da177e4 | 102 | |
1da177e4 LT |
103 | |
104 | /* | |
105 | * Internal Data. | |
106 | */ | |
107 | ||
079c9534 AC |
108 | static struct kbd_struct kbd_table[MAX_NR_CONSOLES]; |
109 | static struct kbd_struct *kbd = kbd_table; | |
110 | ||
111 | /* maximum values each key_handler can handle */ | |
112 | static const int max_vals[] = { | |
113 | 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1, | |
114 | NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1, | |
115 | 255, NR_LOCK - 1, 255, NR_BRL - 1 | |
116 | }; | |
117 | ||
118 | static const int NR_TYPES = ARRAY_SIZE(max_vals); | |
119 | ||
1da177e4 | 120 | static struct input_handler kbd_handler; |
21cea58e | 121 | static DEFINE_SPINLOCK(kbd_event_lock); |
3db1ddb7 | 122 | static DEFINE_SPINLOCK(led_lock); |
7b19ada2 | 123 | static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */ |
1da177e4 | 124 | static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ |
e0785572 | 125 | static bool dead_key_next; |
1da177e4 | 126 | static int npadch = -1; /* -1 or number assembled on pad */ |
b9ec4e10 | 127 | static unsigned int diacr; |
1da177e4 LT |
128 | static char rep; /* flag telling character repeat */ |
129 | ||
079c9534 AC |
130 | static int shift_state = 0; |
131 | ||
1da177e4 LT |
132 | static unsigned char ledstate = 0xff; /* undefined */ |
133 | static unsigned char ledioctl; | |
134 | ||
41ab4396 ST |
135 | /* |
136 | * Notifier list for console keyboard events | |
137 | */ | |
138 | static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list); | |
139 | ||
140 | int register_keyboard_notifier(struct notifier_block *nb) | |
141 | { | |
142 | return atomic_notifier_chain_register(&keyboard_notifier_list, nb); | |
143 | } | |
144 | EXPORT_SYMBOL_GPL(register_keyboard_notifier); | |
145 | ||
146 | int unregister_keyboard_notifier(struct notifier_block *nb) | |
147 | { | |
148 | return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb); | |
149 | } | |
150 | EXPORT_SYMBOL_GPL(unregister_keyboard_notifier); | |
151 | ||
1da177e4 | 152 | /* |
c8e4c772 MR |
153 | * Translation of scancodes to keycodes. We set them on only the first |
154 | * keyboard in the list that accepts the scancode and keycode. | |
155 | * Explanation for not choosing the first attached keyboard anymore: | |
156 | * USB keyboards for example have two event devices: one for all "normal" | |
157 | * keys and one for extra function keys (like "volume up", "make coffee", | |
158 | * etc.). So this means that scancodes for the extra function keys won't | |
159 | * be valid for the first event device, but will be for the second. | |
1da177e4 | 160 | */ |
66d2a595 DT |
161 | |
162 | struct getset_keycode_data { | |
8613e4c2 | 163 | struct input_keymap_entry ke; |
66d2a595 DT |
164 | int error; |
165 | }; | |
166 | ||
167 | static int getkeycode_helper(struct input_handle *handle, void *data) | |
168 | { | |
169 | struct getset_keycode_data *d = data; | |
170 | ||
8613e4c2 | 171 | d->error = input_get_keycode(handle->dev, &d->ke); |
66d2a595 DT |
172 | |
173 | return d->error == 0; /* stop as soon as we successfully get one */ | |
174 | } | |
175 | ||
079c9534 | 176 | static int getkeycode(unsigned int scancode) |
1da177e4 | 177 | { |
8613e4c2 MCC |
178 | struct getset_keycode_data d = { |
179 | .ke = { | |
180 | .flags = 0, | |
181 | .len = sizeof(scancode), | |
182 | .keycode = 0, | |
183 | }, | |
184 | .error = -ENODEV, | |
185 | }; | |
186 | ||
187 | memcpy(d.ke.scancode, &scancode, sizeof(scancode)); | |
c8e4c772 | 188 | |
66d2a595 | 189 | input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper); |
1da177e4 | 190 | |
8613e4c2 | 191 | return d.error ?: d.ke.keycode; |
66d2a595 DT |
192 | } |
193 | ||
194 | static int setkeycode_helper(struct input_handle *handle, void *data) | |
195 | { | |
196 | struct getset_keycode_data *d = data; | |
197 | ||
8613e4c2 | 198 | d->error = input_set_keycode(handle->dev, &d->ke); |
66d2a595 DT |
199 | |
200 | return d->error == 0; /* stop as soon as we successfully set one */ | |
1da177e4 LT |
201 | } |
202 | ||
079c9534 | 203 | static int setkeycode(unsigned int scancode, unsigned int keycode) |
1da177e4 | 204 | { |
8613e4c2 MCC |
205 | struct getset_keycode_data d = { |
206 | .ke = { | |
207 | .flags = 0, | |
208 | .len = sizeof(scancode), | |
209 | .keycode = keycode, | |
210 | }, | |
211 | .error = -ENODEV, | |
212 | }; | |
213 | ||
214 | memcpy(d.ke.scancode, &scancode, sizeof(scancode)); | |
c8e4c772 | 215 | |
66d2a595 | 216 | input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper); |
1da177e4 | 217 | |
66d2a595 | 218 | return d.error; |
1da177e4 LT |
219 | } |
220 | ||
221 | /* | |
18f7ad59 DT |
222 | * Making beeps and bells. Note that we prefer beeps to bells, but when |
223 | * shutting the sound off we do both. | |
1da177e4 | 224 | */ |
66d2a595 DT |
225 | |
226 | static int kd_sound_helper(struct input_handle *handle, void *data) | |
1da177e4 | 227 | { |
66d2a595 DT |
228 | unsigned int *hz = data; |
229 | struct input_dev *dev = handle->dev; | |
1da177e4 | 230 | |
66d2a595 | 231 | if (test_bit(EV_SND, dev->evbit)) { |
18f7ad59 | 232 | if (test_bit(SND_TONE, dev->sndbit)) { |
66d2a595 | 233 | input_inject_event(handle, EV_SND, SND_TONE, *hz); |
18f7ad59 DT |
234 | if (*hz) |
235 | return 0; | |
236 | } | |
237 | if (test_bit(SND_BELL, dev->sndbit)) | |
66d2a595 | 238 | input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0); |
1da177e4 | 239 | } |
66d2a595 DT |
240 | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static void kd_nosound(unsigned long ignored) | |
245 | { | |
246 | static unsigned int zero; | |
247 | ||
248 | input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper); | |
1da177e4 LT |
249 | } |
250 | ||
8d06afab | 251 | static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0); |
1da177e4 LT |
252 | |
253 | void kd_mksound(unsigned int hz, unsigned int ticks) | |
254 | { | |
66d2a595 | 255 | del_timer_sync(&kd_mksound_timer); |
1da177e4 | 256 | |
66d2a595 | 257 | input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper); |
1da177e4 | 258 | |
66d2a595 DT |
259 | if (hz && ticks) |
260 | mod_timer(&kd_mksound_timer, jiffies + ticks); | |
1da177e4 | 261 | } |
f7511d5f | 262 | EXPORT_SYMBOL(kd_mksound); |
1da177e4 LT |
263 | |
264 | /* | |
265 | * Setting the keyboard rate. | |
266 | */ | |
267 | ||
66d2a595 | 268 | static int kbd_rate_helper(struct input_handle *handle, void *data) |
1da177e4 | 269 | { |
66d2a595 DT |
270 | struct input_dev *dev = handle->dev; |
271 | struct kbd_repeat *rep = data; | |
272 | ||
273 | if (test_bit(EV_REP, dev->evbit)) { | |
274 | ||
275 | if (rep[0].delay > 0) | |
276 | input_inject_event(handle, | |
277 | EV_REP, REP_DELAY, rep[0].delay); | |
278 | if (rep[0].period > 0) | |
279 | input_inject_event(handle, | |
280 | EV_REP, REP_PERIOD, rep[0].period); | |
281 | ||
282 | rep[1].delay = dev->rep[REP_DELAY]; | |
283 | rep[1].period = dev->rep[REP_PERIOD]; | |
1da177e4 | 284 | } |
66d2a595 DT |
285 | |
286 | return 0; | |
287 | } | |
288 | ||
289 | int kbd_rate(struct kbd_repeat *rep) | |
290 | { | |
291 | struct kbd_repeat data[2] = { *rep }; | |
292 | ||
293 | input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper); | |
294 | *rep = data[1]; /* Copy currently used settings */ | |
295 | ||
1da177e4 LT |
296 | return 0; |
297 | } | |
298 | ||
299 | /* | |
300 | * Helper Functions. | |
301 | */ | |
302 | static void put_queue(struct vc_data *vc, int ch) | |
303 | { | |
92a19f9c | 304 | tty_insert_flip_char(&vc->port, ch, 0); |
6732c8bb | 305 | tty_schedule_flip(&vc->port); |
1da177e4 LT |
306 | } |
307 | ||
308 | static void puts_queue(struct vc_data *vc, char *cp) | |
309 | { | |
1da177e4 | 310 | while (*cp) { |
92a19f9c | 311 | tty_insert_flip_char(&vc->port, *cp, 0); |
1da177e4 LT |
312 | cp++; |
313 | } | |
6732c8bb | 314 | tty_schedule_flip(&vc->port); |
1da177e4 LT |
315 | } |
316 | ||
317 | static void applkey(struct vc_data *vc, int key, char mode) | |
318 | { | |
319 | static char buf[] = { 0x1b, 'O', 0x00, 0x00 }; | |
320 | ||
321 | buf[1] = (mode ? 'O' : '['); | |
322 | buf[2] = key; | |
323 | puts_queue(vc, buf); | |
324 | } | |
325 | ||
326 | /* | |
327 | * Many other routines do put_queue, but I think either | |
328 | * they produce ASCII, or they produce some user-assigned | |
329 | * string, and in both cases we might assume that it is | |
759448f4 | 330 | * in utf-8 already. |
1da177e4 | 331 | */ |
759448f4 | 332 | static void to_utf8(struct vc_data *vc, uint c) |
1da177e4 LT |
333 | { |
334 | if (c < 0x80) | |
335 | /* 0******* */ | |
336 | put_queue(vc, c); | |
fe1e8604 | 337 | else if (c < 0x800) { |
1da177e4 | 338 | /* 110***** 10****** */ |
fe1e8604 | 339 | put_queue(vc, 0xc0 | (c >> 6)); |
1da177e4 | 340 | put_queue(vc, 0x80 | (c & 0x3f)); |
e0785572 DT |
341 | } else if (c < 0x10000) { |
342 | if (c >= 0xD800 && c < 0xE000) | |
759448f4 JE |
343 | return; |
344 | if (c == 0xFFFF) | |
345 | return; | |
1da177e4 LT |
346 | /* 1110**** 10****** 10****** */ |
347 | put_queue(vc, 0xe0 | (c >> 12)); | |
348 | put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); | |
349 | put_queue(vc, 0x80 | (c & 0x3f)); | |
e0785572 | 350 | } else if (c < 0x110000) { |
759448f4 JE |
351 | /* 11110*** 10****** 10****** 10****** */ |
352 | put_queue(vc, 0xf0 | (c >> 18)); | |
353 | put_queue(vc, 0x80 | ((c >> 12) & 0x3f)); | |
354 | put_queue(vc, 0x80 | ((c >> 6) & 0x3f)); | |
355 | put_queue(vc, 0x80 | (c & 0x3f)); | |
fe1e8604 | 356 | } |
1da177e4 LT |
357 | } |
358 | ||
fe1e8604 | 359 | /* |
1da177e4 LT |
360 | * Called after returning from RAW mode or when changing consoles - recompute |
361 | * shift_down[] and shift_state from key_down[] maybe called when keymap is | |
079c9534 AC |
362 | * undefined, so that shiftkey release is seen. The caller must hold the |
363 | * kbd_event_lock. | |
1da177e4 | 364 | */ |
079c9534 AC |
365 | |
366 | static void do_compute_shiftstate(void) | |
1da177e4 LT |
367 | { |
368 | unsigned int i, j, k, sym, val; | |
369 | ||
370 | shift_state = 0; | |
371 | memset(shift_down, 0, sizeof(shift_down)); | |
fe1e8604 | 372 | |
1da177e4 LT |
373 | for (i = 0; i < ARRAY_SIZE(key_down); i++) { |
374 | ||
375 | if (!key_down[i]) | |
376 | continue; | |
377 | ||
378 | k = i * BITS_PER_LONG; | |
379 | ||
380 | for (j = 0; j < BITS_PER_LONG; j++, k++) { | |
381 | ||
382 | if (!test_bit(k, key_down)) | |
383 | continue; | |
384 | ||
385 | sym = U(key_maps[0][k]); | |
386 | if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK) | |
387 | continue; | |
388 | ||
389 | val = KVAL(sym); | |
390 | if (val == KVAL(K_CAPSSHIFT)) | |
391 | val = KVAL(K_SHIFT); | |
392 | ||
393 | shift_down[val]++; | |
394 | shift_state |= (1 << val); | |
395 | } | |
396 | } | |
397 | } | |
398 | ||
079c9534 AC |
399 | /* We still have to export this method to vt.c */ |
400 | void compute_shiftstate(void) | |
401 | { | |
402 | unsigned long flags; | |
403 | spin_lock_irqsave(&kbd_event_lock, flags); | |
404 | do_compute_shiftstate(); | |
405 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
406 | } | |
407 | ||
1da177e4 LT |
408 | /* |
409 | * We have a combining character DIACR here, followed by the character CH. | |
410 | * If the combination occurs in the table, return the corresponding value. | |
411 | * Otherwise, if CH is a space or equals DIACR, return DIACR. | |
412 | * Otherwise, conclude that DIACR was not combining after all, | |
413 | * queue it and return CH. | |
414 | */ | |
b9ec4e10 | 415 | static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch) |
1da177e4 | 416 | { |
b9ec4e10 | 417 | unsigned int d = diacr; |
1da177e4 LT |
418 | unsigned int i; |
419 | ||
420 | diacr = 0; | |
421 | ||
b9ec4e10 ST |
422 | if ((d & ~0xff) == BRL_UC_ROW) { |
423 | if ((ch & ~0xff) == BRL_UC_ROW) | |
424 | return d | ch; | |
425 | } else { | |
426 | for (i = 0; i < accent_table_size; i++) | |
427 | if (accent_table[i].diacr == d && accent_table[i].base == ch) | |
428 | return accent_table[i].result; | |
1da177e4 LT |
429 | } |
430 | ||
b9ec4e10 | 431 | if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d) |
1da177e4 LT |
432 | return d; |
433 | ||
b9ec4e10 | 434 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
435 | to_utf8(vc, d); |
436 | else { | |
437 | int c = conv_uni_to_8bit(d); | |
438 | if (c != -1) | |
439 | put_queue(vc, c); | |
440 | } | |
b9ec4e10 | 441 | |
1da177e4 LT |
442 | return ch; |
443 | } | |
444 | ||
445 | /* | |
446 | * Special function handlers | |
447 | */ | |
7d12e780 | 448 | static void fn_enter(struct vc_data *vc) |
1da177e4 LT |
449 | { |
450 | if (diacr) { | |
b9ec4e10 | 451 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
452 | to_utf8(vc, diacr); |
453 | else { | |
454 | int c = conv_uni_to_8bit(diacr); | |
455 | if (c != -1) | |
456 | put_queue(vc, c); | |
457 | } | |
1da177e4 LT |
458 | diacr = 0; |
459 | } | |
e0785572 | 460 | |
1da177e4 LT |
461 | put_queue(vc, 13); |
462 | if (vc_kbd_mode(kbd, VC_CRLF)) | |
463 | put_queue(vc, 10); | |
464 | } | |
465 | ||
7d12e780 | 466 | static void fn_caps_toggle(struct vc_data *vc) |
1da177e4 LT |
467 | { |
468 | if (rep) | |
469 | return; | |
e0785572 | 470 | |
1da177e4 LT |
471 | chg_vc_kbd_led(kbd, VC_CAPSLOCK); |
472 | } | |
473 | ||
7d12e780 | 474 | static void fn_caps_on(struct vc_data *vc) |
1da177e4 LT |
475 | { |
476 | if (rep) | |
477 | return; | |
e0785572 | 478 | |
1da177e4 LT |
479 | set_vc_kbd_led(kbd, VC_CAPSLOCK); |
480 | } | |
481 | ||
7d12e780 | 482 | static void fn_show_ptregs(struct vc_data *vc) |
1da177e4 | 483 | { |
7d12e780 | 484 | struct pt_regs *regs = get_irq_regs(); |
e0785572 | 485 | |
1da177e4 LT |
486 | if (regs) |
487 | show_regs(regs); | |
488 | } | |
489 | ||
7d12e780 | 490 | static void fn_hold(struct vc_data *vc) |
1da177e4 | 491 | { |
8ce73264 | 492 | struct tty_struct *tty = vc->port.tty; |
1da177e4 LT |
493 | |
494 | if (rep || !tty) | |
495 | return; | |
496 | ||
497 | /* | |
498 | * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty); | |
499 | * these routines are also activated by ^S/^Q. | |
500 | * (And SCROLLOCK can also be set by the ioctl KDSKBLED.) | |
501 | */ | |
502 | if (tty->stopped) | |
503 | start_tty(tty); | |
504 | else | |
505 | stop_tty(tty); | |
506 | } | |
507 | ||
7d12e780 | 508 | static void fn_num(struct vc_data *vc) |
1da177e4 | 509 | { |
e0785572 | 510 | if (vc_kbd_mode(kbd, VC_APPLIC)) |
1da177e4 LT |
511 | applkey(vc, 'P', 1); |
512 | else | |
7d12e780 | 513 | fn_bare_num(vc); |
1da177e4 LT |
514 | } |
515 | ||
516 | /* | |
517 | * Bind this to Shift-NumLock if you work in application keypad mode | |
518 | * but want to be able to change the NumLock flag. | |
519 | * Bind this to NumLock if you prefer that the NumLock key always | |
520 | * changes the NumLock flag. | |
521 | */ | |
7d12e780 | 522 | static void fn_bare_num(struct vc_data *vc) |
1da177e4 LT |
523 | { |
524 | if (!rep) | |
525 | chg_vc_kbd_led(kbd, VC_NUMLOCK); | |
526 | } | |
527 | ||
7d12e780 | 528 | static void fn_lastcons(struct vc_data *vc) |
1da177e4 LT |
529 | { |
530 | /* switch to the last used console, ChN */ | |
531 | set_console(last_console); | |
532 | } | |
533 | ||
7d12e780 | 534 | static void fn_dec_console(struct vc_data *vc) |
1da177e4 LT |
535 | { |
536 | int i, cur = fg_console; | |
537 | ||
538 | /* Currently switching? Queue this next switch relative to that. */ | |
539 | if (want_console != -1) | |
540 | cur = want_console; | |
541 | ||
fe1e8604 | 542 | for (i = cur - 1; i != cur; i--) { |
1da177e4 | 543 | if (i == -1) |
fe1e8604 | 544 | i = MAX_NR_CONSOLES - 1; |
1da177e4 LT |
545 | if (vc_cons_allocated(i)) |
546 | break; | |
547 | } | |
548 | set_console(i); | |
549 | } | |
550 | ||
7d12e780 | 551 | static void fn_inc_console(struct vc_data *vc) |
1da177e4 LT |
552 | { |
553 | int i, cur = fg_console; | |
554 | ||
555 | /* Currently switching? Queue this next switch relative to that. */ | |
556 | if (want_console != -1) | |
557 | cur = want_console; | |
558 | ||
559 | for (i = cur+1; i != cur; i++) { | |
560 | if (i == MAX_NR_CONSOLES) | |
561 | i = 0; | |
562 | if (vc_cons_allocated(i)) | |
563 | break; | |
564 | } | |
565 | set_console(i); | |
566 | } | |
567 | ||
7d12e780 | 568 | static void fn_send_intr(struct vc_data *vc) |
1da177e4 | 569 | { |
92a19f9c | 570 | tty_insert_flip_char(&vc->port, 0, TTY_BREAK); |
6732c8bb | 571 | tty_schedule_flip(&vc->port); |
1da177e4 LT |
572 | } |
573 | ||
7d12e780 | 574 | static void fn_scroll_forw(struct vc_data *vc) |
1da177e4 LT |
575 | { |
576 | scrollfront(vc, 0); | |
577 | } | |
578 | ||
7d12e780 | 579 | static void fn_scroll_back(struct vc_data *vc) |
1da177e4 LT |
580 | { |
581 | scrollback(vc, 0); | |
582 | } | |
583 | ||
7d12e780 | 584 | static void fn_show_mem(struct vc_data *vc) |
1da177e4 | 585 | { |
b2b755b5 | 586 | show_mem(0); |
1da177e4 LT |
587 | } |
588 | ||
7d12e780 | 589 | static void fn_show_state(struct vc_data *vc) |
1da177e4 LT |
590 | { |
591 | show_state(); | |
592 | } | |
593 | ||
7d12e780 | 594 | static void fn_boot_it(struct vc_data *vc) |
1da177e4 LT |
595 | { |
596 | ctrl_alt_del(); | |
597 | } | |
598 | ||
7d12e780 | 599 | static void fn_compose(struct vc_data *vc) |
1da177e4 | 600 | { |
e0785572 | 601 | dead_key_next = true; |
1da177e4 LT |
602 | } |
603 | ||
7d12e780 | 604 | static void fn_spawn_con(struct vc_data *vc) |
1da177e4 | 605 | { |
81af8d67 EB |
606 | spin_lock(&vt_spawn_con.lock); |
607 | if (vt_spawn_con.pid) | |
608 | if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) { | |
609 | put_pid(vt_spawn_con.pid); | |
610 | vt_spawn_con.pid = NULL; | |
611 | } | |
612 | spin_unlock(&vt_spawn_con.lock); | |
1da177e4 LT |
613 | } |
614 | ||
7d12e780 | 615 | static void fn_SAK(struct vc_data *vc) |
1da177e4 | 616 | { |
8b6312f4 | 617 | struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; |
8b6312f4 | 618 | schedule_work(SAK_work); |
1da177e4 LT |
619 | } |
620 | ||
7d12e780 | 621 | static void fn_null(struct vc_data *vc) |
1da177e4 | 622 | { |
079c9534 | 623 | do_compute_shiftstate(); |
1da177e4 LT |
624 | } |
625 | ||
626 | /* | |
627 | * Special key handlers | |
628 | */ | |
7d12e780 | 629 | static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
630 | { |
631 | } | |
632 | ||
7d12e780 | 633 | static void k_spec(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
634 | { |
635 | if (up_flag) | |
636 | return; | |
637 | if (value >= ARRAY_SIZE(fn_handler)) | |
638 | return; | |
fe1e8604 | 639 | if ((kbd->kbdmode == VC_RAW || |
9fc3de9c AT |
640 | kbd->kbdmode == VC_MEDIUMRAW || |
641 | kbd->kbdmode == VC_OFF) && | |
1da177e4 LT |
642 | value != KVAL(K_SAK)) |
643 | return; /* SAK is allowed even in raw mode */ | |
7d12e780 | 644 | fn_handler[value](vc); |
1da177e4 LT |
645 | } |
646 | ||
7d12e780 | 647 | static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 648 | { |
9272e9a2 | 649 | pr_err("k_lowercase was called - impossible\n"); |
1da177e4 LT |
650 | } |
651 | ||
7d12e780 | 652 | static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag) |
1da177e4 LT |
653 | { |
654 | if (up_flag) | |
655 | return; /* no action, if this is a key release */ | |
656 | ||
657 | if (diacr) | |
658 | value = handle_diacr(vc, value); | |
659 | ||
660 | if (dead_key_next) { | |
e0785572 | 661 | dead_key_next = false; |
1da177e4 LT |
662 | diacr = value; |
663 | return; | |
664 | } | |
b9ec4e10 | 665 | if (kbd->kbdmode == VC_UNICODE) |
04c71976 ST |
666 | to_utf8(vc, value); |
667 | else { | |
668 | int c = conv_uni_to_8bit(value); | |
669 | if (c != -1) | |
670 | put_queue(vc, c); | |
671 | } | |
1da177e4 LT |
672 | } |
673 | ||
674 | /* | |
675 | * Handle dead key. Note that we now may have several | |
676 | * dead keys modifying the same character. Very useful | |
677 | * for Vietnamese. | |
678 | */ | |
7d12e780 | 679 | static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag) |
1da177e4 LT |
680 | { |
681 | if (up_flag) | |
682 | return; | |
e0785572 | 683 | |
1da177e4 LT |
684 | diacr = (diacr ? handle_diacr(vc, value) : value); |
685 | } | |
686 | ||
7d12e780 | 687 | static void k_self(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 688 | { |
d2187ebd | 689 | k_unicode(vc, conv_8bit_to_uni(value), up_flag); |
b9ec4e10 ST |
690 | } |
691 | ||
7d12e780 | 692 | static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 693 | { |
7d12e780 | 694 | k_deadunicode(vc, value, up_flag); |
b9ec4e10 ST |
695 | } |
696 | ||
1da177e4 LT |
697 | /* |
698 | * Obsolete - for backwards compatibility only | |
699 | */ | |
7d12e780 | 700 | static void k_dead(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 701 | { |
0f5e560e | 702 | static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; |
e0785572 DT |
703 | |
704 | k_deadunicode(vc, ret_diacr[value], up_flag); | |
1da177e4 LT |
705 | } |
706 | ||
7d12e780 | 707 | static void k_cons(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
708 | { |
709 | if (up_flag) | |
710 | return; | |
e0785572 | 711 | |
1da177e4 LT |
712 | set_console(value); |
713 | } | |
714 | ||
7d12e780 | 715 | static void k_fn(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 716 | { |
1da177e4 LT |
717 | if (up_flag) |
718 | return; | |
e0785572 DT |
719 | |
720 | if ((unsigned)value < ARRAY_SIZE(func_table)) { | |
1da177e4 LT |
721 | if (func_table[value]) |
722 | puts_queue(vc, func_table[value]); | |
723 | } else | |
9272e9a2 | 724 | pr_err("k_fn called with value=%d\n", value); |
1da177e4 LT |
725 | } |
726 | ||
7d12e780 | 727 | static void k_cur(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 728 | { |
e52b29c2 | 729 | static const char cur_chars[] = "BDCA"; |
1da177e4 LT |
730 | |
731 | if (up_flag) | |
732 | return; | |
e0785572 | 733 | |
1da177e4 LT |
734 | applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE)); |
735 | } | |
736 | ||
7d12e780 | 737 | static void k_pad(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 738 | { |
0f5e560e AM |
739 | static const char pad_chars[] = "0123456789+-*/\015,.?()#"; |
740 | static const char app_map[] = "pqrstuvwxylSRQMnnmPQS"; | |
1da177e4 LT |
741 | |
742 | if (up_flag) | |
743 | return; /* no action, if this is a key release */ | |
744 | ||
745 | /* kludge... shift forces cursor/number keys */ | |
746 | if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) { | |
747 | applkey(vc, app_map[value], 1); | |
748 | return; | |
749 | } | |
750 | ||
e0785572 DT |
751 | if (!vc_kbd_led(kbd, VC_NUMLOCK)) { |
752 | ||
1da177e4 | 753 | switch (value) { |
e0785572 DT |
754 | case KVAL(K_PCOMMA): |
755 | case KVAL(K_PDOT): | |
756 | k_fn(vc, KVAL(K_REMOVE), 0); | |
757 | return; | |
758 | case KVAL(K_P0): | |
759 | k_fn(vc, KVAL(K_INSERT), 0); | |
760 | return; | |
761 | case KVAL(K_P1): | |
762 | k_fn(vc, KVAL(K_SELECT), 0); | |
763 | return; | |
764 | case KVAL(K_P2): | |
765 | k_cur(vc, KVAL(K_DOWN), 0); | |
766 | return; | |
767 | case KVAL(K_P3): | |
768 | k_fn(vc, KVAL(K_PGDN), 0); | |
769 | return; | |
770 | case KVAL(K_P4): | |
771 | k_cur(vc, KVAL(K_LEFT), 0); | |
772 | return; | |
773 | case KVAL(K_P6): | |
774 | k_cur(vc, KVAL(K_RIGHT), 0); | |
775 | return; | |
776 | case KVAL(K_P7): | |
777 | k_fn(vc, KVAL(K_FIND), 0); | |
778 | return; | |
779 | case KVAL(K_P8): | |
780 | k_cur(vc, KVAL(K_UP), 0); | |
781 | return; | |
782 | case KVAL(K_P9): | |
783 | k_fn(vc, KVAL(K_PGUP), 0); | |
784 | return; | |
785 | case KVAL(K_P5): | |
786 | applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC)); | |
787 | return; | |
1da177e4 | 788 | } |
e0785572 | 789 | } |
1da177e4 LT |
790 | |
791 | put_queue(vc, pad_chars[value]); | |
792 | if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF)) | |
793 | put_queue(vc, 10); | |
794 | } | |
795 | ||
7d12e780 | 796 | static void k_shift(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
797 | { |
798 | int old_state = shift_state; | |
799 | ||
800 | if (rep) | |
801 | return; | |
802 | /* | |
803 | * Mimic typewriter: | |
804 | * a CapsShift key acts like Shift but undoes CapsLock | |
805 | */ | |
806 | if (value == KVAL(K_CAPSSHIFT)) { | |
807 | value = KVAL(K_SHIFT); | |
808 | if (!up_flag) | |
809 | clr_vc_kbd_led(kbd, VC_CAPSLOCK); | |
810 | } | |
811 | ||
812 | if (up_flag) { | |
813 | /* | |
814 | * handle the case that two shift or control | |
815 | * keys are depressed simultaneously | |
816 | */ | |
817 | if (shift_down[value]) | |
818 | shift_down[value]--; | |
819 | } else | |
820 | shift_down[value]++; | |
821 | ||
822 | if (shift_down[value]) | |
823 | shift_state |= (1 << value); | |
824 | else | |
825 | shift_state &= ~(1 << value); | |
826 | ||
827 | /* kludge */ | |
828 | if (up_flag && shift_state != old_state && npadch != -1) { | |
829 | if (kbd->kbdmode == VC_UNICODE) | |
759448f4 | 830 | to_utf8(vc, npadch); |
1da177e4 LT |
831 | else |
832 | put_queue(vc, npadch & 0xff); | |
833 | npadch = -1; | |
834 | } | |
835 | } | |
836 | ||
7d12e780 | 837 | static void k_meta(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
838 | { |
839 | if (up_flag) | |
840 | return; | |
841 | ||
842 | if (vc_kbd_mode(kbd, VC_META)) { | |
843 | put_queue(vc, '\033'); | |
844 | put_queue(vc, value); | |
845 | } else | |
846 | put_queue(vc, value | 0x80); | |
847 | } | |
848 | ||
7d12e780 | 849 | static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
850 | { |
851 | int base; | |
852 | ||
853 | if (up_flag) | |
854 | return; | |
855 | ||
856 | if (value < 10) { | |
857 | /* decimal input of code, while Alt depressed */ | |
858 | base = 10; | |
859 | } else { | |
860 | /* hexadecimal input of code, while AltGr depressed */ | |
861 | value -= 10; | |
862 | base = 16; | |
863 | } | |
864 | ||
865 | if (npadch == -1) | |
866 | npadch = value; | |
867 | else | |
868 | npadch = npadch * base + value; | |
869 | } | |
870 | ||
7d12e780 | 871 | static void k_lock(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 LT |
872 | { |
873 | if (up_flag || rep) | |
874 | return; | |
e0785572 | 875 | |
1da177e4 LT |
876 | chg_vc_kbd_lock(kbd, value); |
877 | } | |
878 | ||
7d12e780 | 879 | static void k_slock(struct vc_data *vc, unsigned char value, char up_flag) |
1da177e4 | 880 | { |
7d12e780 | 881 | k_shift(vc, value, up_flag); |
1da177e4 LT |
882 | if (up_flag || rep) |
883 | return; | |
e0785572 | 884 | |
1da177e4 LT |
885 | chg_vc_kbd_slock(kbd, value); |
886 | /* try to make Alt, oops, AltGr and such work */ | |
887 | if (!key_maps[kbd->lockstate ^ kbd->slockstate]) { | |
888 | kbd->slockstate = 0; | |
889 | chg_vc_kbd_slock(kbd, value); | |
890 | } | |
891 | } | |
892 | ||
b9ec4e10 | 893 | /* by default, 300ms interval for combination release */ |
77426d72 ST |
894 | static unsigned brl_timeout = 300; |
895 | MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)"); | |
896 | module_param(brl_timeout, uint, 0644); | |
897 | ||
898 | static unsigned brl_nbchords = 1; | |
899 | MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)"); | |
900 | module_param(brl_nbchords, uint, 0644); | |
901 | ||
7d12e780 | 902 | static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag) |
77426d72 ST |
903 | { |
904 | static unsigned long chords; | |
905 | static unsigned committed; | |
906 | ||
907 | if (!brl_nbchords) | |
7d12e780 | 908 | k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag); |
77426d72 ST |
909 | else { |
910 | committed |= pattern; | |
911 | chords++; | |
912 | if (chords == brl_nbchords) { | |
7d12e780 | 913 | k_unicode(vc, BRL_UC_ROW | committed, up_flag); |
77426d72 ST |
914 | chords = 0; |
915 | committed = 0; | |
916 | } | |
917 | } | |
918 | } | |
919 | ||
7d12e780 | 920 | static void k_brl(struct vc_data *vc, unsigned char value, char up_flag) |
b9ec4e10 | 921 | { |
e0785572 | 922 | static unsigned pressed, committing; |
b9ec4e10 ST |
923 | static unsigned long releasestart; |
924 | ||
925 | if (kbd->kbdmode != VC_UNICODE) { | |
926 | if (!up_flag) | |
9272e9a2 | 927 | pr_warning("keyboard mode must be unicode for braille patterns\n"); |
b9ec4e10 ST |
928 | return; |
929 | } | |
930 | ||
931 | if (!value) { | |
7d12e780 | 932 | k_unicode(vc, BRL_UC_ROW, up_flag); |
b9ec4e10 ST |
933 | return; |
934 | } | |
935 | ||
936 | if (value > 8) | |
937 | return; | |
938 | ||
e0785572 | 939 | if (!up_flag) { |
b9ec4e10 ST |
940 | pressed |= 1 << (value - 1); |
941 | if (!brl_timeout) | |
942 | committing = pressed; | |
e0785572 DT |
943 | } else if (brl_timeout) { |
944 | if (!committing || | |
945 | time_after(jiffies, | |
946 | releasestart + msecs_to_jiffies(brl_timeout))) { | |
947 | committing = pressed; | |
948 | releasestart = jiffies; | |
949 | } | |
950 | pressed &= ~(1 << (value - 1)); | |
951 | if (!pressed && committing) { | |
952 | k_brlcommit(vc, committing, 0); | |
953 | committing = 0; | |
954 | } | |
955 | } else { | |
956 | if (committing) { | |
957 | k_brlcommit(vc, committing, 0); | |
958 | committing = 0; | |
959 | } | |
960 | pressed &= ~(1 << (value - 1)); | |
b9ec4e10 ST |
961 | } |
962 | } | |
963 | ||
1da177e4 LT |
964 | /* |
965 | * The leds display either (i) the status of NumLock, CapsLock, ScrollLock, | |
966 | * or (ii) whatever pattern of lights people want to show using KDSETLED, | |
967 | * or (iii) specified bits of specified words in kernel memory. | |
968 | */ | |
3db1ddb7 | 969 | static unsigned char getledstate(void) |
1da177e4 LT |
970 | { |
971 | return ledstate; | |
972 | } | |
973 | ||
974 | void setledstate(struct kbd_struct *kbd, unsigned int led) | |
975 | { | |
079c9534 | 976 | unsigned long flags; |
3db1ddb7 | 977 | spin_lock_irqsave(&led_lock, flags); |
1da177e4 LT |
978 | if (!(led & ~7)) { |
979 | ledioctl = led; | |
980 | kbd->ledmode = LED_SHOW_IOCTL; | |
981 | } else | |
982 | kbd->ledmode = LED_SHOW_FLAGS; | |
e0785572 | 983 | |
1da177e4 | 984 | set_leds(); |
3db1ddb7 | 985 | spin_unlock_irqrestore(&led_lock, flags); |
1da177e4 LT |
986 | } |
987 | ||
988 | static inline unsigned char getleds(void) | |
989 | { | |
990 | struct kbd_struct *kbd = kbd_table + fg_console; | |
1da177e4 LT |
991 | |
992 | if (kbd->ledmode == LED_SHOW_IOCTL) | |
993 | return ledioctl; | |
994 | ||
cf940ebe | 995 | return kbd->ledflagstate; |
1da177e4 LT |
996 | } |
997 | ||
66d2a595 DT |
998 | static int kbd_update_leds_helper(struct input_handle *handle, void *data) |
999 | { | |
1000 | unsigned char leds = *(unsigned char *)data; | |
1001 | ||
1002 | if (test_bit(EV_LED, handle->dev->evbit)) { | |
1003 | input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01)); | |
1004 | input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02)); | |
1005 | input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04)); | |
1006 | input_inject_event(handle, EV_SYN, SYN_REPORT, 0); | |
1007 | } | |
1008 | ||
1009 | return 0; | |
1010 | } | |
1011 | ||
079c9534 AC |
1012 | /** |
1013 | * vt_get_leds - helper for braille console | |
1014 | * @console: console to read | |
1015 | * @flag: flag we want to check | |
1016 | * | |
1017 | * Check the status of a keyboard led flag and report it back | |
1018 | */ | |
1019 | int vt_get_leds(int console, int flag) | |
1020 | { | |
079c9534 AC |
1021 | struct kbd_struct * kbd = kbd_table + console; |
1022 | int ret; | |
3db1ddb7 | 1023 | unsigned long flags; |
079c9534 | 1024 | |
3db1ddb7 | 1025 | spin_lock_irqsave(&led_lock, flags); |
079c9534 | 1026 | ret = vc_kbd_led(kbd, flag); |
3db1ddb7 | 1027 | spin_unlock_irqrestore(&led_lock, flags); |
079c9534 AC |
1028 | |
1029 | return ret; | |
1030 | } | |
1031 | EXPORT_SYMBOL_GPL(vt_get_leds); | |
1032 | ||
1033 | /** | |
1034 | * vt_set_led_state - set LED state of a console | |
1035 | * @console: console to set | |
1036 | * @leds: LED bits | |
1037 | * | |
1038 | * Set the LEDs on a console. This is a wrapper for the VT layer | |
1039 | * so that we can keep kbd knowledge internal | |
1040 | */ | |
1041 | void vt_set_led_state(int console, int leds) | |
1042 | { | |
1043 | struct kbd_struct * kbd = kbd_table + console; | |
1044 | setledstate(kbd, leds); | |
1045 | } | |
1046 | ||
1047 | /** | |
1048 | * vt_kbd_con_start - Keyboard side of console start | |
1049 | * @console: console | |
1050 | * | |
1051 | * Handle console start. This is a wrapper for the VT layer | |
1052 | * so that we can keep kbd knowledge internal | |
84f904ec AC |
1053 | * |
1054 | * FIXME: We eventually need to hold the kbd lock here to protect | |
1055 | * the LED updating. We can't do it yet because fn_hold calls stop_tty | |
1056 | * and start_tty under the kbd_event_lock, while normal tty paths | |
1057 | * don't hold the lock. We probably need to split out an LED lock | |
1058 | * but not during an -rc release! | |
079c9534 AC |
1059 | */ |
1060 | void vt_kbd_con_start(int console) | |
1061 | { | |
1062 | struct kbd_struct * kbd = kbd_table + console; | |
3db1ddb7 AC |
1063 | unsigned long flags; |
1064 | spin_lock_irqsave(&led_lock, flags); | |
079c9534 AC |
1065 | clr_vc_kbd_led(kbd, VC_SCROLLOCK); |
1066 | set_leds(); | |
3db1ddb7 | 1067 | spin_unlock_irqrestore(&led_lock, flags); |
079c9534 AC |
1068 | } |
1069 | ||
1070 | /** | |
1071 | * vt_kbd_con_stop - Keyboard side of console stop | |
1072 | * @console: console | |
1073 | * | |
1074 | * Handle console stop. This is a wrapper for the VT layer | |
1075 | * so that we can keep kbd knowledge internal | |
1076 | */ | |
1077 | void vt_kbd_con_stop(int console) | |
1078 | { | |
1079 | struct kbd_struct * kbd = kbd_table + console; | |
3db1ddb7 AC |
1080 | unsigned long flags; |
1081 | spin_lock_irqsave(&led_lock, flags); | |
079c9534 AC |
1082 | set_vc_kbd_led(kbd, VC_SCROLLOCK); |
1083 | set_leds(); | |
3db1ddb7 | 1084 | spin_unlock_irqrestore(&led_lock, flags); |
079c9534 AC |
1085 | } |
1086 | ||
1da177e4 | 1087 | /* |
66d2a595 DT |
1088 | * This is the tasklet that updates LED state on all keyboards |
1089 | * attached to the box. The reason we use tasklet is that we | |
1090 | * need to handle the scenario when keyboard handler is not | |
84f904ec | 1091 | * registered yet but we already getting updates from the VT to |
66d2a595 | 1092 | * update led state. |
1da177e4 | 1093 | */ |
1da177e4 LT |
1094 | static void kbd_bh(unsigned long dummy) |
1095 | { | |
3db1ddb7 AC |
1096 | unsigned char leds; |
1097 | unsigned long flags; | |
1098 | ||
1099 | spin_lock_irqsave(&led_lock, flags); | |
1100 | leds = getleds(); | |
1101 | spin_unlock_irqrestore(&led_lock, flags); | |
1da177e4 LT |
1102 | |
1103 | if (leds != ledstate) { | |
66d2a595 DT |
1104 | input_handler_for_each_handle(&kbd_handler, &leds, |
1105 | kbd_update_leds_helper); | |
1106 | ledstate = leds; | |
1da177e4 | 1107 | } |
1da177e4 LT |
1108 | } |
1109 | ||
1110 | DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0); | |
1111 | ||
1da177e4 | 1112 | #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\ |
0b57ee9e AB |
1113 | defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\ |
1114 | defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\ | |
3a4e832c HCE |
1115 | (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\ |
1116 | defined(CONFIG_AVR32) | |
1da177e4 LT |
1117 | |
1118 | #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\ | |
1119 | ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001)) | |
1120 | ||
0f5e560e | 1121 | static const unsigned short x86_keycodes[256] = |
1da177e4 LT |
1122 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
1123 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
1124 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
1125 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
1126 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
1127 | 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92, | |
896cdc7b | 1128 | 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339, |
1da177e4 LT |
1129 | 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349, |
1130 | 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355, | |
72a42f24 HG |
1131 | 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361, |
1132 | 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114, | |
1da177e4 LT |
1133 | 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116, |
1134 | 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307, | |
1135 | 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330, | |
1136 | 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 }; | |
1137 | ||
0b57ee9e | 1138 | #ifdef CONFIG_SPARC |
e0785572 | 1139 | static int sparc_l1_a_state; |
1da177e4 LT |
1140 | extern void sun_do_break(void); |
1141 | #endif | |
1142 | ||
fe1e8604 | 1143 | static int emulate_raw(struct vc_data *vc, unsigned int keycode, |
1da177e4 LT |
1144 | unsigned char up_flag) |
1145 | { | |
896cdc7b | 1146 | int code; |
1da177e4 LT |
1147 | |
1148 | switch (keycode) { | |
896cdc7b | 1149 | |
e0785572 DT |
1150 | case KEY_PAUSE: |
1151 | put_queue(vc, 0xe1); | |
1152 | put_queue(vc, 0x1d | up_flag); | |
1153 | put_queue(vc, 0x45 | up_flag); | |
1154 | break; | |
896cdc7b | 1155 | |
e0785572 DT |
1156 | case KEY_HANGEUL: |
1157 | if (!up_flag) | |
1158 | put_queue(vc, 0xf2); | |
1159 | break; | |
1da177e4 | 1160 | |
e0785572 DT |
1161 | case KEY_HANJA: |
1162 | if (!up_flag) | |
1163 | put_queue(vc, 0xf1); | |
1164 | break; | |
896cdc7b | 1165 | |
e0785572 DT |
1166 | case KEY_SYSRQ: |
1167 | /* | |
1168 | * Real AT keyboards (that's what we're trying | |
1169 | * to emulate here emit 0xe0 0x2a 0xe0 0x37 when | |
1170 | * pressing PrtSc/SysRq alone, but simply 0x54 | |
1171 | * when pressing Alt+PrtSc/SysRq. | |
1172 | */ | |
1173 | if (test_bit(KEY_LEFTALT, key_down) || | |
1174 | test_bit(KEY_RIGHTALT, key_down)) { | |
1175 | put_queue(vc, 0x54 | up_flag); | |
1176 | } else { | |
1177 | put_queue(vc, 0xe0); | |
1178 | put_queue(vc, 0x2a | up_flag); | |
1179 | put_queue(vc, 0xe0); | |
1180 | put_queue(vc, 0x37 | up_flag); | |
1181 | } | |
1182 | break; | |
1da177e4 | 1183 | |
e0785572 DT |
1184 | default: |
1185 | if (keycode > 255) | |
1186 | return -1; | |
1da177e4 | 1187 | |
e0785572 DT |
1188 | code = x86_keycodes[keycode]; |
1189 | if (!code) | |
1190 | return -1; | |
1da177e4 | 1191 | |
e0785572 DT |
1192 | if (code & 0x100) |
1193 | put_queue(vc, 0xe0); | |
1194 | put_queue(vc, (code & 0x7f) | up_flag); | |
1195 | ||
1196 | break; | |
1da177e4 LT |
1197 | } |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | #else | |
1203 | ||
1204 | #define HW_RAW(dev) 0 | |
1205 | ||
1da177e4 LT |
1206 | static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag) |
1207 | { | |
1208 | if (keycode > 127) | |
1209 | return -1; | |
1210 | ||
1211 | put_queue(vc, keycode | up_flag); | |
1212 | return 0; | |
1213 | } | |
1214 | #endif | |
1215 | ||
1216 | static void kbd_rawcode(unsigned char data) | |
1217 | { | |
1218 | struct vc_data *vc = vc_cons[fg_console].d; | |
e0785572 | 1219 | |
0c09b2ac | 1220 | kbd = kbd_table + vc->vc_num; |
1da177e4 LT |
1221 | if (kbd->kbdmode == VC_RAW) |
1222 | put_queue(vc, data); | |
1223 | } | |
1224 | ||
7d12e780 | 1225 | static void kbd_keycode(unsigned int keycode, int down, int hw_raw) |
1da177e4 LT |
1226 | { |
1227 | struct vc_data *vc = vc_cons[fg_console].d; | |
1228 | unsigned short keysym, *key_map; | |
e0785572 DT |
1229 | unsigned char type; |
1230 | bool raw_mode; | |
1da177e4 LT |
1231 | struct tty_struct *tty; |
1232 | int shift_final; | |
41ab4396 | 1233 | struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down }; |
e0785572 | 1234 | int rc; |
1da177e4 | 1235 | |
8ce73264 | 1236 | tty = vc->port.tty; |
1da177e4 LT |
1237 | |
1238 | if (tty && (!tty->driver_data)) { | |
1239 | /* No driver data? Strange. Okay we fix it then. */ | |
1240 | tty->driver_data = vc; | |
1241 | } | |
1242 | ||
0c09b2ac | 1243 | kbd = kbd_table + vc->vc_num; |
1da177e4 | 1244 | |
0b57ee9e | 1245 | #ifdef CONFIG_SPARC |
1da177e4 LT |
1246 | if (keycode == KEY_STOP) |
1247 | sparc_l1_a_state = down; | |
1248 | #endif | |
1249 | ||
1250 | rep = (down == 2); | |
1251 | ||
e0785572 DT |
1252 | raw_mode = (kbd->kbdmode == VC_RAW); |
1253 | if (raw_mode && !hw_raw) | |
1da177e4 | 1254 | if (emulate_raw(vc, keycode, !down << 7)) |
9e35d206 | 1255 | if (keycode < BTN_MISC && printk_ratelimit()) |
9272e9a2 DT |
1256 | pr_warning("can't emulate rawmode for keycode %d\n", |
1257 | keycode); | |
1da177e4 | 1258 | |
0b57ee9e | 1259 | #ifdef CONFIG_SPARC |
1da177e4 | 1260 | if (keycode == KEY_A && sparc_l1_a_state) { |
e0785572 | 1261 | sparc_l1_a_state = false; |
1da177e4 LT |
1262 | sun_do_break(); |
1263 | } | |
1264 | #endif | |
1265 | ||
1266 | if (kbd->kbdmode == VC_MEDIUMRAW) { | |
1267 | /* | |
1268 | * This is extended medium raw mode, with keys above 127 | |
1269 | * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing | |
1270 | * the 'up' flag if needed. 0 is reserved, so this shouldn't | |
1271 | * interfere with anything else. The two bytes after 0 will | |
1272 | * always have the up flag set not to interfere with older | |
1273 | * applications. This allows for 16384 different keycodes, | |
1274 | * which should be enough. | |
1275 | */ | |
1276 | if (keycode < 128) { | |
1277 | put_queue(vc, keycode | (!down << 7)); | |
1278 | } else { | |
1279 | put_queue(vc, !down << 7); | |
1280 | put_queue(vc, (keycode >> 7) | 0x80); | |
1281 | put_queue(vc, keycode | 0x80); | |
1282 | } | |
e0785572 | 1283 | raw_mode = true; |
1da177e4 LT |
1284 | } |
1285 | ||
1286 | if (down) | |
1287 | set_bit(keycode, key_down); | |
1288 | else | |
1289 | clear_bit(keycode, key_down); | |
1290 | ||
fe1e8604 DT |
1291 | if (rep && |
1292 | (!vc_kbd_mode(kbd, VC_REPEAT) || | |
f34d7a5b | 1293 | (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) { |
1da177e4 LT |
1294 | /* |
1295 | * Don't repeat a key if the input buffers are not empty and the | |
fe1e8604 | 1296 | * characters get aren't echoed locally. This makes key repeat |
1da177e4 LT |
1297 | * usable with slow applications and under heavy loads. |
1298 | */ | |
1299 | return; | |
1300 | } | |
1301 | ||
41ab4396 | 1302 | param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate; |
0beb4f6f | 1303 | param.ledstate = kbd->ledflagstate; |
1da177e4 LT |
1304 | key_map = key_maps[shift_final]; |
1305 | ||
e0785572 DT |
1306 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, |
1307 | KBD_KEYCODE, ¶m); | |
1308 | if (rc == NOTIFY_STOP || !key_map) { | |
1309 | atomic_notifier_call_chain(&keyboard_notifier_list, | |
1310 | KBD_UNBOUND_KEYCODE, ¶m); | |
079c9534 | 1311 | do_compute_shiftstate(); |
1da177e4 LT |
1312 | kbd->slockstate = 0; |
1313 | return; | |
1314 | } | |
1315 | ||
e0785572 | 1316 | if (keycode < NR_KEYS) |
b9ec4e10 | 1317 | keysym = key_map[keycode]; |
e0785572 DT |
1318 | else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8) |
1319 | keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1)); | |
1320 | else | |
1321 | return; | |
1da177e4 | 1322 | |
1da177e4 LT |
1323 | type = KTYP(keysym); |
1324 | ||
1325 | if (type < 0xf0) { | |
41ab4396 | 1326 | param.value = keysym; |
e0785572 DT |
1327 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, |
1328 | KBD_UNICODE, ¶m); | |
1329 | if (rc != NOTIFY_STOP) | |
1330 | if (down && !raw_mode) | |
1331 | to_utf8(vc, keysym); | |
1da177e4 LT |
1332 | return; |
1333 | } | |
1334 | ||
1335 | type -= 0xf0; | |
1336 | ||
1da177e4 LT |
1337 | if (type == KT_LETTER) { |
1338 | type = KT_LATIN; | |
1339 | if (vc_kbd_led(kbd, VC_CAPSLOCK)) { | |
1340 | key_map = key_maps[shift_final ^ (1 << KG_SHIFT)]; | |
1341 | if (key_map) | |
1342 | keysym = key_map[keycode]; | |
1343 | } | |
1344 | } | |
41ab4396 | 1345 | |
e0785572 DT |
1346 | param.value = keysym; |
1347 | rc = atomic_notifier_call_chain(&keyboard_notifier_list, | |
1348 | KBD_KEYSYM, ¶m); | |
1349 | if (rc == NOTIFY_STOP) | |
41ab4396 ST |
1350 | return; |
1351 | ||
9fc3de9c | 1352 | if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT) |
41ab4396 | 1353 | return; |
1da177e4 | 1354 | |
7d12e780 | 1355 | (*k_handler[type])(vc, keysym & 0xff, !down); |
1da177e4 | 1356 | |
0beb4f6f | 1357 | param.ledstate = kbd->ledflagstate; |
41ab4396 ST |
1358 | atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m); |
1359 | ||
1da177e4 LT |
1360 | if (type != KT_SLOCK) |
1361 | kbd->slockstate = 0; | |
1362 | } | |
1363 | ||
fe1e8604 | 1364 | static void kbd_event(struct input_handle *handle, unsigned int event_type, |
1da177e4 LT |
1365 | unsigned int event_code, int value) |
1366 | { | |
21cea58e DT |
1367 | /* We are called with interrupts disabled, just take the lock */ |
1368 | spin_lock(&kbd_event_lock); | |
1369 | ||
1da177e4 LT |
1370 | if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev)) |
1371 | kbd_rawcode(value); | |
1372 | if (event_type == EV_KEY) | |
7d12e780 | 1373 | kbd_keycode(event_code, value, HW_RAW(handle->dev)); |
21cea58e DT |
1374 | |
1375 | spin_unlock(&kbd_event_lock); | |
1376 | ||
1da177e4 LT |
1377 | tasklet_schedule(&keyboard_tasklet); |
1378 | do_poke_blanked_console = 1; | |
1379 | schedule_console_callback(); | |
1380 | } | |
1381 | ||
0b7024ac DT |
1382 | static bool kbd_match(struct input_handler *handler, struct input_dev *dev) |
1383 | { | |
1384 | int i; | |
1385 | ||
1386 | if (test_bit(EV_SND, dev->evbit)) | |
1387 | return true; | |
1388 | ||
53c1f764 | 1389 | if (test_bit(EV_KEY, dev->evbit)) { |
0b7024ac DT |
1390 | for (i = KEY_RESERVED; i < BTN_MISC; i++) |
1391 | if (test_bit(i, dev->keybit)) | |
1392 | return true; | |
53c1f764 ST |
1393 | for (i = KEY_BRL_DOT1; i <= KEY_BRL_DOT10; i++) |
1394 | if (test_bit(i, dev->keybit)) | |
1395 | return true; | |
1396 | } | |
0b7024ac DT |
1397 | |
1398 | return false; | |
1399 | } | |
1400 | ||
1da177e4 LT |
1401 | /* |
1402 | * When a keyboard (or other input device) is found, the kbd_connect | |
1403 | * function is called. The function then looks at the device, and if it | |
1404 | * likes it, it can open it and get events from it. In this (kbd_connect) | |
1405 | * function, we should decide which VT to bind that keyboard to initially. | |
1406 | */ | |
5b2a0826 DT |
1407 | static int kbd_connect(struct input_handler *handler, struct input_dev *dev, |
1408 | const struct input_device_id *id) | |
1da177e4 LT |
1409 | { |
1410 | struct input_handle *handle; | |
5b2a0826 | 1411 | int error; |
1da177e4 | 1412 | |
22479e1c DT |
1413 | handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); |
1414 | if (!handle) | |
5b2a0826 | 1415 | return -ENOMEM; |
1da177e4 LT |
1416 | |
1417 | handle->dev = dev; | |
1418 | handle->handler = handler; | |
fe1e8604 | 1419 | handle->name = "kbd"; |
1da177e4 | 1420 | |
5b2a0826 DT |
1421 | error = input_register_handle(handle); |
1422 | if (error) | |
1423 | goto err_free_handle; | |
1da177e4 | 1424 | |
5b2a0826 DT |
1425 | error = input_open_device(handle); |
1426 | if (error) | |
1427 | goto err_unregister_handle; | |
1428 | ||
1429 | return 0; | |
1430 | ||
1431 | err_unregister_handle: | |
1432 | input_unregister_handle(handle); | |
1433 | err_free_handle: | |
1434 | kfree(handle); | |
1435 | return error; | |
1da177e4 LT |
1436 | } |
1437 | ||
1438 | static void kbd_disconnect(struct input_handle *handle) | |
1439 | { | |
1440 | input_close_device(handle); | |
5b2a0826 | 1441 | input_unregister_handle(handle); |
1da177e4 LT |
1442 | kfree(handle); |
1443 | } | |
1444 | ||
c7e8dc6e DT |
1445 | /* |
1446 | * Start keyboard handler on the new keyboard by refreshing LED state to | |
1447 | * match the rest of the system. | |
1448 | */ | |
1449 | static void kbd_start(struct input_handle *handle) | |
1450 | { | |
c7e8dc6e | 1451 | tasklet_disable(&keyboard_tasklet); |
66d2a595 DT |
1452 | |
1453 | if (ledstate != 0xff) | |
1454 | kbd_update_leds_helper(handle, &ledstate); | |
1455 | ||
c7e8dc6e DT |
1456 | tasklet_enable(&keyboard_tasklet); |
1457 | } | |
1458 | ||
66e66118 | 1459 | static const struct input_device_id kbd_ids[] = { |
1da177e4 | 1460 | { |
6aeed479 AC |
1461 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
1462 | .evbit = { BIT_MASK(EV_KEY) }, | |
1463 | }, | |
fe1e8604 | 1464 | |
1da177e4 | 1465 | { |
6aeed479 AC |
1466 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
1467 | .evbit = { BIT_MASK(EV_SND) }, | |
1468 | }, | |
1da177e4 LT |
1469 | |
1470 | { }, /* Terminating entry */ | |
1471 | }; | |
1472 | ||
1473 | MODULE_DEVICE_TABLE(input, kbd_ids); | |
1474 | ||
1475 | static struct input_handler kbd_handler = { | |
1476 | .event = kbd_event, | |
0b7024ac | 1477 | .match = kbd_match, |
1da177e4 LT |
1478 | .connect = kbd_connect, |
1479 | .disconnect = kbd_disconnect, | |
c7e8dc6e | 1480 | .start = kbd_start, |
1da177e4 LT |
1481 | .name = "kbd", |
1482 | .id_table = kbd_ids, | |
1483 | }; | |
1484 | ||
1485 | int __init kbd_init(void) | |
1486 | { | |
1487 | int i; | |
4263cf0f | 1488 | int error; |
1da177e4 | 1489 | |
6aeed479 | 1490 | for (i = 0; i < MAX_NR_CONSOLES; i++) { |
b2d0b7a0 JC |
1491 | kbd_table[i].ledflagstate = kbd_defleds(); |
1492 | kbd_table[i].default_ledflagstate = kbd_defleds(); | |
2b192908 DT |
1493 | kbd_table[i].ledmode = LED_SHOW_FLAGS; |
1494 | kbd_table[i].lockstate = KBD_DEFLOCK; | |
1495 | kbd_table[i].slockstate = 0; | |
1496 | kbd_table[i].modeflags = KBD_DEFMODE; | |
2e8ecb9d | 1497 | kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; |
2b192908 | 1498 | } |
1da177e4 | 1499 | |
4263cf0f DT |
1500 | error = input_register_handler(&kbd_handler); |
1501 | if (error) | |
1502 | return error; | |
1da177e4 LT |
1503 | |
1504 | tasklet_enable(&keyboard_tasklet); | |
1505 | tasklet_schedule(&keyboard_tasklet); | |
1506 | ||
1507 | return 0; | |
1508 | } | |
247ff8e6 AC |
1509 | |
1510 | /* Ioctl support code */ | |
1511 | ||
1512 | /** | |
1513 | * vt_do_diacrit - diacritical table updates | |
1514 | * @cmd: ioctl request | |
1515 | * @up: pointer to user data for ioctl | |
1516 | * @perm: permissions check computed by caller | |
1517 | * | |
1518 | * Update the diacritical tables atomically and safely. Lock them | |
1519 | * against simultaneous keypresses | |
1520 | */ | |
1521 | int vt_do_diacrit(unsigned int cmd, void __user *up, int perm) | |
1522 | { | |
1523 | struct kbdiacrs __user *a = up; | |
1524 | unsigned long flags; | |
1525 | int asize; | |
1526 | int ret = 0; | |
1527 | ||
1528 | switch (cmd) { | |
1529 | case KDGKBDIACR: | |
1530 | { | |
1531 | struct kbdiacr *diacr; | |
1532 | int i; | |
1533 | ||
1534 | diacr = kmalloc(MAX_DIACR * sizeof(struct kbdiacr), | |
1535 | GFP_KERNEL); | |
1536 | if (diacr == NULL) | |
1537 | return -ENOMEM; | |
1538 | ||
1539 | /* Lock the diacriticals table, make a copy and then | |
1540 | copy it after we unlock */ | |
1541 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1542 | ||
1543 | asize = accent_table_size; | |
1544 | for (i = 0; i < asize; i++) { | |
1545 | diacr[i].diacr = conv_uni_to_8bit( | |
1546 | accent_table[i].diacr); | |
1547 | diacr[i].base = conv_uni_to_8bit( | |
1548 | accent_table[i].base); | |
1549 | diacr[i].result = conv_uni_to_8bit( | |
1550 | accent_table[i].result); | |
1551 | } | |
1552 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1553 | ||
1554 | if (put_user(asize, &a->kb_cnt)) | |
1555 | ret = -EFAULT; | |
1556 | else if (copy_to_user(a->kbdiacr, diacr, | |
1557 | asize * sizeof(struct kbdiacr))) | |
1558 | ret = -EFAULT; | |
1559 | kfree(diacr); | |
1560 | return ret; | |
1561 | } | |
1562 | case KDGKBDIACRUC: | |
1563 | { | |
1564 | struct kbdiacrsuc __user *a = up; | |
1565 | void *buf; | |
1566 | ||
1567 | buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc), | |
1568 | GFP_KERNEL); | |
1569 | if (buf == NULL) | |
1570 | return -ENOMEM; | |
1571 | ||
1572 | /* Lock the diacriticals table, make a copy and then | |
1573 | copy it after we unlock */ | |
1574 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1575 | ||
1576 | asize = accent_table_size; | |
1577 | memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc)); | |
1578 | ||
1579 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1580 | ||
1581 | if (put_user(asize, &a->kb_cnt)) | |
1582 | ret = -EFAULT; | |
1583 | else if (copy_to_user(a->kbdiacruc, buf, | |
1584 | asize*sizeof(struct kbdiacruc))) | |
1585 | ret = -EFAULT; | |
1586 | kfree(buf); | |
1587 | return ret; | |
1588 | } | |
1589 | ||
1590 | case KDSKBDIACR: | |
1591 | { | |
1592 | struct kbdiacrs __user *a = up; | |
1593 | struct kbdiacr *diacr = NULL; | |
1594 | unsigned int ct; | |
1595 | int i; | |
1596 | ||
1597 | if (!perm) | |
1598 | return -EPERM; | |
1599 | if (get_user(ct, &a->kb_cnt)) | |
1600 | return -EFAULT; | |
1601 | if (ct >= MAX_DIACR) | |
1602 | return -EINVAL; | |
1603 | ||
1604 | if (ct) { | |
1605 | diacr = kmalloc(sizeof(struct kbdiacr) * ct, | |
1606 | GFP_KERNEL); | |
1607 | if (diacr == NULL) | |
1608 | return -ENOMEM; | |
1609 | ||
1610 | if (copy_from_user(diacr, a->kbdiacr, | |
1611 | sizeof(struct kbdiacr) * ct)) { | |
1612 | kfree(diacr); | |
1613 | return -EFAULT; | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1618 | accent_table_size = ct; | |
1619 | for (i = 0; i < ct; i++) { | |
1620 | accent_table[i].diacr = | |
1621 | conv_8bit_to_uni(diacr[i].diacr); | |
1622 | accent_table[i].base = | |
1623 | conv_8bit_to_uni(diacr[i].base); | |
1624 | accent_table[i].result = | |
1625 | conv_8bit_to_uni(diacr[i].result); | |
1626 | } | |
1627 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1628 | kfree(diacr); | |
1629 | return 0; | |
1630 | } | |
1631 | ||
1632 | case KDSKBDIACRUC: | |
1633 | { | |
1634 | struct kbdiacrsuc __user *a = up; | |
1635 | unsigned int ct; | |
1636 | void *buf = NULL; | |
1637 | ||
1638 | if (!perm) | |
1639 | return -EPERM; | |
1640 | ||
1641 | if (get_user(ct, &a->kb_cnt)) | |
1642 | return -EFAULT; | |
1643 | ||
1644 | if (ct >= MAX_DIACR) | |
1645 | return -EINVAL; | |
1646 | ||
1647 | if (ct) { | |
1648 | buf = kmalloc(ct * sizeof(struct kbdiacruc), | |
1649 | GFP_KERNEL); | |
1650 | if (buf == NULL) | |
1651 | return -ENOMEM; | |
1652 | ||
1653 | if (copy_from_user(buf, a->kbdiacruc, | |
1654 | ct * sizeof(struct kbdiacruc))) { | |
1655 | kfree(buf); | |
1656 | return -EFAULT; | |
1657 | } | |
1658 | } | |
1659 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1660 | if (ct) | |
1661 | memcpy(accent_table, buf, | |
1662 | ct * sizeof(struct kbdiacruc)); | |
1663 | accent_table_size = ct; | |
1664 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1665 | kfree(buf); | |
1666 | return 0; | |
1667 | } | |
1668 | } | |
1669 | return ret; | |
1670 | } | |
079c9534 AC |
1671 | |
1672 | /** | |
1673 | * vt_do_kdskbmode - set keyboard mode ioctl | |
1674 | * @console: the console to use | |
1675 | * @arg: the requested mode | |
1676 | * | |
1677 | * Update the keyboard mode bits while holding the correct locks. | |
1678 | * Return 0 for success or an error code. | |
1679 | */ | |
1680 | int vt_do_kdskbmode(int console, unsigned int arg) | |
1681 | { | |
1682 | struct kbd_struct * kbd = kbd_table + console; | |
1683 | int ret = 0; | |
1684 | unsigned long flags; | |
1685 | ||
1686 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1687 | switch(arg) { | |
1688 | case K_RAW: | |
1689 | kbd->kbdmode = VC_RAW; | |
1690 | break; | |
1691 | case K_MEDIUMRAW: | |
1692 | kbd->kbdmode = VC_MEDIUMRAW; | |
1693 | break; | |
1694 | case K_XLATE: | |
1695 | kbd->kbdmode = VC_XLATE; | |
1696 | do_compute_shiftstate(); | |
1697 | break; | |
1698 | case K_UNICODE: | |
1699 | kbd->kbdmode = VC_UNICODE; | |
1700 | do_compute_shiftstate(); | |
1701 | break; | |
1702 | case K_OFF: | |
1703 | kbd->kbdmode = VC_OFF; | |
1704 | break; | |
1705 | default: | |
1706 | ret = -EINVAL; | |
1707 | } | |
1708 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1709 | return ret; | |
1710 | } | |
1711 | ||
1712 | /** | |
1713 | * vt_do_kdskbmeta - set keyboard meta state | |
1714 | * @console: the console to use | |
1715 | * @arg: the requested meta state | |
1716 | * | |
1717 | * Update the keyboard meta bits while holding the correct locks. | |
1718 | * Return 0 for success or an error code. | |
1719 | */ | |
1720 | int vt_do_kdskbmeta(int console, unsigned int arg) | |
1721 | { | |
1722 | struct kbd_struct * kbd = kbd_table + console; | |
1723 | int ret = 0; | |
1724 | unsigned long flags; | |
1725 | ||
1726 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1727 | switch(arg) { | |
1728 | case K_METABIT: | |
1729 | clr_vc_kbd_mode(kbd, VC_META); | |
1730 | break; | |
1731 | case K_ESCPREFIX: | |
1732 | set_vc_kbd_mode(kbd, VC_META); | |
1733 | break; | |
1734 | default: | |
1735 | ret = -EINVAL; | |
1736 | } | |
1737 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1738 | return ret; | |
1739 | } | |
1740 | ||
1741 | int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc, | |
1742 | int perm) | |
1743 | { | |
1744 | struct kbkeycode tmp; | |
1745 | int kc = 0; | |
1746 | ||
1747 | if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode))) | |
1748 | return -EFAULT; | |
1749 | switch (cmd) { | |
1750 | case KDGETKEYCODE: | |
1751 | kc = getkeycode(tmp.scancode); | |
1752 | if (kc >= 0) | |
1753 | kc = put_user(kc, &user_kbkc->keycode); | |
1754 | break; | |
1755 | case KDSETKEYCODE: | |
1756 | if (!perm) | |
1757 | return -EPERM; | |
1758 | kc = setkeycode(tmp.scancode, tmp.keycode); | |
1759 | break; | |
1760 | } | |
1761 | return kc; | |
1762 | } | |
1763 | ||
1764 | #define i (tmp.kb_index) | |
1765 | #define s (tmp.kb_table) | |
1766 | #define v (tmp.kb_value) | |
1767 | ||
1768 | int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm, | |
1769 | int console) | |
1770 | { | |
1771 | struct kbd_struct * kbd = kbd_table + console; | |
1772 | struct kbentry tmp; | |
1773 | ushort *key_map, *new_map, val, ov; | |
1774 | unsigned long flags; | |
1775 | ||
1776 | if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry))) | |
1777 | return -EFAULT; | |
1778 | ||
1779 | if (!capable(CAP_SYS_TTY_CONFIG)) | |
1780 | perm = 0; | |
1781 | ||
1782 | switch (cmd) { | |
1783 | case KDGKBENT: | |
1784 | /* Ensure another thread doesn't free it under us */ | |
1785 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1786 | key_map = key_maps[s]; | |
1787 | if (key_map) { | |
1788 | val = U(key_map[i]); | |
1789 | if (kbd->kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES) | |
1790 | val = K_HOLE; | |
1791 | } else | |
1792 | val = (i ? K_HOLE : K_NOSUCHMAP); | |
1793 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1794 | return put_user(val, &user_kbe->kb_value); | |
1795 | case KDSKBENT: | |
1796 | if (!perm) | |
1797 | return -EPERM; | |
1798 | if (!i && v == K_NOSUCHMAP) { | |
1799 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1800 | /* deallocate map */ | |
1801 | key_map = key_maps[s]; | |
1802 | if (s && key_map) { | |
1803 | key_maps[s] = NULL; | |
1804 | if (key_map[0] == U(K_ALLOCATED)) { | |
1805 | kfree(key_map); | |
1806 | keymap_count--; | |
1807 | } | |
1808 | } | |
1809 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1810 | break; | |
1811 | } | |
1812 | ||
1813 | if (KTYP(v) < NR_TYPES) { | |
1814 | if (KVAL(v) > max_vals[KTYP(v)]) | |
1815 | return -EINVAL; | |
1816 | } else | |
1817 | if (kbd->kbdmode != VC_UNICODE) | |
1818 | return -EINVAL; | |
1819 | ||
1820 | /* ++Geert: non-PC keyboards may generate keycode zero */ | |
1821 | #if !defined(__mc68000__) && !defined(__powerpc__) | |
1822 | /* assignment to entry 0 only tests validity of args */ | |
1823 | if (!i) | |
1824 | break; | |
1825 | #endif | |
1826 | ||
1827 | new_map = kmalloc(sizeof(plain_map), GFP_KERNEL); | |
1828 | if (!new_map) | |
1829 | return -ENOMEM; | |
1830 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1831 | key_map = key_maps[s]; | |
1832 | if (key_map == NULL) { | |
1833 | int j; | |
1834 | ||
1835 | if (keymap_count >= MAX_NR_OF_USER_KEYMAPS && | |
1836 | !capable(CAP_SYS_RESOURCE)) { | |
1837 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1838 | kfree(new_map); | |
1839 | return -EPERM; | |
1840 | } | |
1841 | key_maps[s] = new_map; | |
82896210 | 1842 | key_map = new_map; |
079c9534 AC |
1843 | key_map[0] = U(K_ALLOCATED); |
1844 | for (j = 1; j < NR_KEYS; j++) | |
1845 | key_map[j] = U(K_HOLE); | |
1846 | keymap_count++; | |
1847 | } else | |
1848 | kfree(new_map); | |
1849 | ||
1850 | ov = U(key_map[i]); | |
1851 | if (v == ov) | |
1852 | goto out; | |
1853 | /* | |
1854 | * Attention Key. | |
1855 | */ | |
1856 | if (((ov == K_SAK) || (v == K_SAK)) && !capable(CAP_SYS_ADMIN)) { | |
1857 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1858 | return -EPERM; | |
1859 | } | |
1860 | key_map[i] = U(v); | |
1861 | if (!s && (KTYP(ov) == KT_SHIFT || KTYP(v) == KT_SHIFT)) | |
1862 | do_compute_shiftstate(); | |
1863 | out: | |
1864 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1865 | break; | |
1866 | } | |
1867 | return 0; | |
1868 | } | |
1869 | #undef i | |
1870 | #undef s | |
1871 | #undef v | |
1872 | ||
1873 | /* FIXME: This one needs untangling and locking */ | |
1874 | int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm) | |
1875 | { | |
1876 | struct kbsentry *kbs; | |
1877 | char *p; | |
1878 | u_char *q; | |
1879 | u_char __user *up; | |
1880 | int sz; | |
1881 | int delta; | |
1882 | char *first_free, *fj, *fnw; | |
1883 | int i, j, k; | |
1884 | int ret; | |
1885 | ||
1886 | if (!capable(CAP_SYS_TTY_CONFIG)) | |
1887 | perm = 0; | |
1888 | ||
1889 | kbs = kmalloc(sizeof(*kbs), GFP_KERNEL); | |
1890 | if (!kbs) { | |
1891 | ret = -ENOMEM; | |
1892 | goto reterr; | |
1893 | } | |
1894 | ||
1895 | /* we mostly copy too much here (512bytes), but who cares ;) */ | |
1896 | if (copy_from_user(kbs, user_kdgkb, sizeof(struct kbsentry))) { | |
1897 | ret = -EFAULT; | |
1898 | goto reterr; | |
1899 | } | |
1900 | kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0'; | |
1901 | i = kbs->kb_func; | |
1902 | ||
1903 | switch (cmd) { | |
1904 | case KDGKBSENT: | |
1905 | sz = sizeof(kbs->kb_string) - 1; /* sz should have been | |
1906 | a struct member */ | |
1907 | up = user_kdgkb->kb_string; | |
1908 | p = func_table[i]; | |
1909 | if(p) | |
1910 | for ( ; *p && sz; p++, sz--) | |
1911 | if (put_user(*p, up++)) { | |
1912 | ret = -EFAULT; | |
1913 | goto reterr; | |
1914 | } | |
1915 | if (put_user('\0', up)) { | |
1916 | ret = -EFAULT; | |
1917 | goto reterr; | |
1918 | } | |
1919 | kfree(kbs); | |
1920 | return ((p && *p) ? -EOVERFLOW : 0); | |
1921 | case KDSKBSENT: | |
1922 | if (!perm) { | |
1923 | ret = -EPERM; | |
1924 | goto reterr; | |
1925 | } | |
1926 | ||
1927 | q = func_table[i]; | |
1928 | first_free = funcbufptr + (funcbufsize - funcbufleft); | |
1929 | for (j = i+1; j < MAX_NR_FUNC && !func_table[j]; j++) | |
1930 | ; | |
1931 | if (j < MAX_NR_FUNC) | |
1932 | fj = func_table[j]; | |
1933 | else | |
1934 | fj = first_free; | |
1935 | ||
1936 | delta = (q ? -strlen(q) : 1) + strlen(kbs->kb_string); | |
1937 | if (delta <= funcbufleft) { /* it fits in current buf */ | |
1938 | if (j < MAX_NR_FUNC) { | |
1939 | memmove(fj + delta, fj, first_free - fj); | |
1940 | for (k = j; k < MAX_NR_FUNC; k++) | |
1941 | if (func_table[k]) | |
1942 | func_table[k] += delta; | |
1943 | } | |
1944 | if (!q) | |
1945 | func_table[i] = fj; | |
1946 | funcbufleft -= delta; | |
1947 | } else { /* allocate a larger buffer */ | |
1948 | sz = 256; | |
1949 | while (sz < funcbufsize - funcbufleft + delta) | |
1950 | sz <<= 1; | |
1951 | fnw = kmalloc(sz, GFP_KERNEL); | |
1952 | if(!fnw) { | |
1953 | ret = -ENOMEM; | |
1954 | goto reterr; | |
1955 | } | |
1956 | ||
1957 | if (!q) | |
1958 | func_table[i] = fj; | |
1959 | if (fj > funcbufptr) | |
1960 | memmove(fnw, funcbufptr, fj - funcbufptr); | |
1961 | for (k = 0; k < j; k++) | |
1962 | if (func_table[k]) | |
1963 | func_table[k] = fnw + (func_table[k] - funcbufptr); | |
1964 | ||
1965 | if (first_free > fj) { | |
1966 | memmove(fnw + (fj - funcbufptr) + delta, fj, first_free - fj); | |
1967 | for (k = j; k < MAX_NR_FUNC; k++) | |
1968 | if (func_table[k]) | |
1969 | func_table[k] = fnw + (func_table[k] - funcbufptr) + delta; | |
1970 | } | |
1971 | if (funcbufptr != func_buf) | |
1972 | kfree(funcbufptr); | |
1973 | funcbufptr = fnw; | |
1974 | funcbufleft = funcbufleft - delta + sz - funcbufsize; | |
1975 | funcbufsize = sz; | |
1976 | } | |
1977 | strcpy(func_table[i], kbs->kb_string); | |
1978 | break; | |
1979 | } | |
1980 | ret = 0; | |
1981 | reterr: | |
1982 | kfree(kbs); | |
1983 | return ret; | |
1984 | } | |
1985 | ||
1986 | int vt_do_kdskled(int console, int cmd, unsigned long arg, int perm) | |
1987 | { | |
1988 | struct kbd_struct * kbd = kbd_table + console; | |
1989 | unsigned long flags; | |
1990 | unsigned char ucval; | |
1991 | ||
1992 | switch(cmd) { | |
1993 | /* the ioctls below read/set the flags usually shown in the leds */ | |
1994 | /* don't use them - they will go away without warning */ | |
1995 | case KDGKBLED: | |
1996 | spin_lock_irqsave(&kbd_event_lock, flags); | |
1997 | ucval = kbd->ledflagstate | (kbd->default_ledflagstate << 4); | |
1998 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
1999 | return put_user(ucval, (char __user *)arg); | |
2000 | ||
2001 | case KDSKBLED: | |
2002 | if (!perm) | |
2003 | return -EPERM; | |
2004 | if (arg & ~0x77) | |
2005 | return -EINVAL; | |
3db1ddb7 | 2006 | spin_lock_irqsave(&led_lock, flags); |
079c9534 AC |
2007 | kbd->ledflagstate = (arg & 7); |
2008 | kbd->default_ledflagstate = ((arg >> 4) & 7); | |
2009 | set_leds(); | |
3db1ddb7 | 2010 | spin_unlock_irqrestore(&led_lock, flags); |
eea41aee | 2011 | return 0; |
079c9534 AC |
2012 | |
2013 | /* the ioctls below only set the lights, not the functions */ | |
2014 | /* for those, see KDGKBLED and KDSKBLED above */ | |
2015 | case KDGETLED: | |
2016 | ucval = getledstate(); | |
2017 | return put_user(ucval, (char __user *)arg); | |
2018 | ||
2019 | case KDSETLED: | |
2020 | if (!perm) | |
2021 | return -EPERM; | |
2022 | setledstate(kbd, arg); | |
2023 | return 0; | |
2024 | } | |
2025 | return -ENOIOCTLCMD; | |
2026 | } | |
2027 | ||
2028 | int vt_do_kdgkbmode(int console) | |
2029 | { | |
2030 | struct kbd_struct * kbd = kbd_table + console; | |
2031 | /* This is a spot read so needs no locking */ | |
2032 | switch (kbd->kbdmode) { | |
2033 | case VC_RAW: | |
2034 | return K_RAW; | |
2035 | case VC_MEDIUMRAW: | |
2036 | return K_MEDIUMRAW; | |
2037 | case VC_UNICODE: | |
2038 | return K_UNICODE; | |
2039 | case VC_OFF: | |
2040 | return K_OFF; | |
2041 | default: | |
2042 | return K_XLATE; | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /** | |
2047 | * vt_do_kdgkbmeta - report meta status | |
2048 | * @console: console to report | |
2049 | * | |
2050 | * Report the meta flag status of this console | |
2051 | */ | |
2052 | int vt_do_kdgkbmeta(int console) | |
2053 | { | |
2054 | struct kbd_struct * kbd = kbd_table + console; | |
2055 | /* Again a spot read so no locking */ | |
2056 | return vc_kbd_mode(kbd, VC_META) ? K_ESCPREFIX : K_METABIT; | |
2057 | } | |
2058 | ||
2059 | /** | |
2060 | * vt_reset_unicode - reset the unicode status | |
2061 | * @console: console being reset | |
2062 | * | |
2063 | * Restore the unicode console state to its default | |
2064 | */ | |
2065 | void vt_reset_unicode(int console) | |
2066 | { | |
2067 | unsigned long flags; | |
2068 | ||
2069 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2070 | kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE; | |
2071 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2072 | } | |
2073 | ||
2074 | /** | |
2075 | * vt_get_shiftstate - shift bit state | |
2076 | * | |
2077 | * Report the shift bits from the keyboard state. We have to export | |
2078 | * this to support some oddities in the vt layer. | |
2079 | */ | |
2080 | int vt_get_shift_state(void) | |
2081 | { | |
2082 | /* Don't lock as this is a transient report */ | |
2083 | return shift_state; | |
2084 | } | |
2085 | ||
2086 | /** | |
2087 | * vt_reset_keyboard - reset keyboard state | |
2088 | * @console: console to reset | |
2089 | * | |
2090 | * Reset the keyboard bits for a console as part of a general console | |
2091 | * reset event | |
2092 | */ | |
2093 | void vt_reset_keyboard(int console) | |
2094 | { | |
2095 | struct kbd_struct * kbd = kbd_table + console; | |
2096 | unsigned long flags; | |
2097 | ||
2098 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2099 | set_vc_kbd_mode(kbd, VC_REPEAT); | |
2100 | clr_vc_kbd_mode(kbd, VC_CKMODE); | |
2101 | clr_vc_kbd_mode(kbd, VC_APPLIC); | |
2102 | clr_vc_kbd_mode(kbd, VC_CRLF); | |
2103 | kbd->lockstate = 0; | |
2104 | kbd->slockstate = 0; | |
3db1ddb7 | 2105 | spin_lock(&led_lock); |
079c9534 AC |
2106 | kbd->ledmode = LED_SHOW_FLAGS; |
2107 | kbd->ledflagstate = kbd->default_ledflagstate; | |
3db1ddb7 | 2108 | spin_unlock(&led_lock); |
079c9534 AC |
2109 | /* do not do set_leds here because this causes an endless tasklet loop |
2110 | when the keyboard hasn't been initialized yet */ | |
2111 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2112 | } | |
2113 | ||
2114 | /** | |
2115 | * vt_get_kbd_mode_bit - read keyboard status bits | |
2116 | * @console: console to read from | |
2117 | * @bit: mode bit to read | |
2118 | * | |
2119 | * Report back a vt mode bit. We do this without locking so the | |
2120 | * caller must be sure that there are no synchronization needs | |
2121 | */ | |
2122 | ||
2123 | int vt_get_kbd_mode_bit(int console, int bit) | |
2124 | { | |
2125 | struct kbd_struct * kbd = kbd_table + console; | |
2126 | return vc_kbd_mode(kbd, bit); | |
2127 | } | |
2128 | ||
2129 | /** | |
2130 | * vt_set_kbd_mode_bit - read keyboard status bits | |
2131 | * @console: console to read from | |
2132 | * @bit: mode bit to read | |
2133 | * | |
2134 | * Set a vt mode bit. We do this without locking so the | |
2135 | * caller must be sure that there are no synchronization needs | |
2136 | */ | |
2137 | ||
2138 | void vt_set_kbd_mode_bit(int console, int bit) | |
2139 | { | |
2140 | struct kbd_struct * kbd = kbd_table + console; | |
2141 | unsigned long flags; | |
2142 | ||
2143 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2144 | set_vc_kbd_mode(kbd, bit); | |
2145 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2146 | } | |
2147 | ||
2148 | /** | |
2149 | * vt_clr_kbd_mode_bit - read keyboard status bits | |
2150 | * @console: console to read from | |
2151 | * @bit: mode bit to read | |
2152 | * | |
2153 | * Report back a vt mode bit. We do this without locking so the | |
2154 | * caller must be sure that there are no synchronization needs | |
2155 | */ | |
2156 | ||
2157 | void vt_clr_kbd_mode_bit(int console, int bit) | |
2158 | { | |
2159 | struct kbd_struct * kbd = kbd_table + console; | |
2160 | unsigned long flags; | |
2161 | ||
2162 | spin_lock_irqsave(&kbd_event_lock, flags); | |
2163 | clr_vc_kbd_mode(kbd, bit); | |
2164 | spin_unlock_irqrestore(&kbd_event_lock, flags); | |
2165 | } |