Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/char/vc_screen.c | |
3 | * | |
4 | * Provide access to virtual console memory. | |
5 | * /dev/vcs0: the screen as it is being viewed right now (possibly scrolled) | |
6 | * /dev/vcsN: the screen of /dev/ttyN (1 <= N <= 63) | |
7 | * [minor: N] | |
8 | * | |
9 | * /dev/vcsaN: idem, but including attributes, and prefixed with | |
10 | * the 4 bytes lines,columns,x,y (as screendump used to give). | |
11 | * Attribute/character pair is in native endianity. | |
12 | * [minor: N+128] | |
13 | * | |
14 | * This replaces screendump and part of selection, so that the system | |
15 | * administrator can control access using file system permissions. | |
16 | * | |
17 | * aeb@cwi.nl - efter Friedas begravelse - 950211 | |
18 | * | |
19 | * machek@k332.feld.cvut.cz - modified not to send characters to wrong console | |
20 | * - fixed some fatal off-by-one bugs (0-- no longer == -1 -> looping and looping and looping...) | |
21 | * - making it shorter - scr_readw are macros which expand in PRETTY long code | |
22 | */ | |
23 | ||
1da177e4 LT |
24 | #include <linux/kernel.h> |
25 | #include <linux/major.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/tty.h> | |
1da177e4 LT |
28 | #include <linux/interrupt.h> |
29 | #include <linux/mm.h> | |
30 | #include <linux/init.h> | |
c831c338 | 31 | #include <linux/mutex.h> |
1da177e4 LT |
32 | #include <linux/vt_kern.h> |
33 | #include <linux/selection.h> | |
34 | #include <linux/kbd_kern.h> | |
35 | #include <linux/console.h> | |
1da177e4 | 36 | #include <linux/device.h> |
f97259e3 | 37 | #include <linux/smp_lock.h> |
47725ac7 NP |
38 | #include <linux/sched.h> |
39 | #include <linux/fs.h> | |
40 | #include <linux/poll.h> | |
41 | #include <linux/signal.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/notifier.h> | |
c831c338 | 44 | |
1da177e4 LT |
45 | #include <asm/uaccess.h> |
46 | #include <asm/byteorder.h> | |
47 | #include <asm/unaligned.h> | |
48 | ||
49 | #undef attr | |
50 | #undef org | |
51 | #undef addr | |
52 | #define HEADER_SIZE 4 | |
53 | ||
47725ac7 NP |
54 | struct vcs_poll_data { |
55 | struct notifier_block notifier; | |
56 | unsigned int cons_num; | |
57 | bool seen_last_update; | |
58 | wait_queue_head_t waitq; | |
59 | struct fasync_struct *fasync; | |
60 | }; | |
61 | ||
62 | static int | |
63 | vcs_notifier(struct notifier_block *nb, unsigned long code, void *_param) | |
64 | { | |
65 | struct vt_notifier_param *param = _param; | |
66 | struct vc_data *vc = param->vc; | |
67 | struct vcs_poll_data *poll = | |
68 | container_of(nb, struct vcs_poll_data, notifier); | |
69 | int currcons = poll->cons_num; | |
70 | ||
71 | if (code != VT_UPDATE) | |
72 | return NOTIFY_DONE; | |
73 | ||
74 | if (currcons == 0) | |
75 | currcons = fg_console; | |
76 | else | |
77 | currcons--; | |
78 | if (currcons != vc->vc_num) | |
79 | return NOTIFY_DONE; | |
80 | ||
81 | poll->seen_last_update = false; | |
82 | wake_up_interruptible(&poll->waitq); | |
83 | kill_fasync(&poll->fasync, SIGIO, POLL_IN); | |
84 | return NOTIFY_OK; | |
85 | } | |
86 | ||
87 | static void | |
88 | vcs_poll_data_free(struct vcs_poll_data *poll) | |
89 | { | |
90 | unregister_vt_notifier(&poll->notifier); | |
91 | kfree(poll); | |
92 | } | |
93 | ||
94 | static struct vcs_poll_data * | |
95 | vcs_poll_data_get(struct file *file) | |
96 | { | |
97 | struct vcs_poll_data *poll = file->private_data; | |
98 | ||
99 | if (poll) | |
100 | return poll; | |
101 | ||
102 | poll = kzalloc(sizeof(*poll), GFP_KERNEL); | |
103 | if (!poll) | |
104 | return NULL; | |
105 | poll->cons_num = iminor(file->f_path.dentry->d_inode) & 127; | |
106 | init_waitqueue_head(&poll->waitq); | |
107 | poll->notifier.notifier_call = vcs_notifier; | |
108 | if (register_vt_notifier(&poll->notifier) != 0) { | |
109 | kfree(poll); | |
110 | return NULL; | |
111 | } | |
112 | ||
113 | /* | |
114 | * This code may be called either through ->poll() or ->fasync(). | |
115 | * If we have two threads using the same file descriptor, they could | |
116 | * both enter this function, both notice that the structure hasn't | |
117 | * been allocated yet and go ahead allocating it in parallel, but | |
118 | * only one of them must survive and be shared otherwise we'd leak | |
119 | * memory with a dangling notifier callback. | |
120 | */ | |
121 | spin_lock(&file->f_lock); | |
122 | if (!file->private_data) { | |
123 | file->private_data = poll; | |
124 | } else { | |
125 | /* someone else raced ahead of us */ | |
126 | vcs_poll_data_free(poll); | |
127 | poll = file->private_data; | |
128 | } | |
129 | spin_unlock(&file->f_lock); | |
130 | ||
131 | return poll; | |
132 | } | |
133 | ||
1da177e4 LT |
134 | static int |
135 | vcs_size(struct inode *inode) | |
136 | { | |
137 | int size; | |
138 | int minor = iminor(inode); | |
139 | int currcons = minor & 127; | |
140 | struct vc_data *vc; | |
141 | ||
142 | if (currcons == 0) | |
143 | currcons = fg_console; | |
144 | else | |
145 | currcons--; | |
146 | if (!vc_cons_allocated(currcons)) | |
147 | return -ENXIO; | |
148 | vc = vc_cons[currcons].d; | |
149 | ||
150 | size = vc->vc_rows * vc->vc_cols; | |
151 | ||
152 | if (minor & 128) | |
153 | size = 2*size + HEADER_SIZE; | |
154 | return size; | |
155 | } | |
156 | ||
157 | static loff_t vcs_lseek(struct file *file, loff_t offset, int orig) | |
158 | { | |
159 | int size; | |
160 | ||
c831c338 | 161 | mutex_lock(&con_buf_mtx); |
a7113a96 | 162 | size = vcs_size(file->f_path.dentry->d_inode); |
1da177e4 LT |
163 | switch (orig) { |
164 | default: | |
c831c338 | 165 | mutex_unlock(&con_buf_mtx); |
1da177e4 LT |
166 | return -EINVAL; |
167 | case 2: | |
168 | offset += size; | |
169 | break; | |
170 | case 1: | |
171 | offset += file->f_pos; | |
172 | case 0: | |
173 | break; | |
174 | } | |
175 | if (offset < 0 || offset > size) { | |
c831c338 | 176 | mutex_unlock(&con_buf_mtx); |
1da177e4 LT |
177 | return -EINVAL; |
178 | } | |
179 | file->f_pos = offset; | |
c831c338 | 180 | mutex_unlock(&con_buf_mtx); |
1da177e4 LT |
181 | return file->f_pos; |
182 | } | |
183 | ||
184 | ||
185 | static ssize_t | |
186 | vcs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
187 | { | |
a7113a96 | 188 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
189 | unsigned int currcons = iminor(inode); |
190 | struct vc_data *vc; | |
47725ac7 | 191 | struct vcs_poll_data *poll; |
1da177e4 LT |
192 | long pos; |
193 | long viewed, attr, read; | |
194 | int col, maxcol; | |
195 | unsigned short *org = NULL; | |
196 | ssize_t ret; | |
197 | ||
c831c338 | 198 | mutex_lock(&con_buf_mtx); |
1da177e4 LT |
199 | |
200 | pos = *ppos; | |
201 | ||
202 | /* Select the proper current console and verify | |
203 | * sanity of the situation under the console lock. | |
204 | */ | |
205 | acquire_console_sem(); | |
206 | ||
207 | attr = (currcons & 128); | |
208 | currcons = (currcons & 127); | |
209 | if (currcons == 0) { | |
210 | currcons = fg_console; | |
211 | viewed = 1; | |
212 | } else { | |
213 | currcons--; | |
214 | viewed = 0; | |
215 | } | |
216 | ret = -ENXIO; | |
217 | if (!vc_cons_allocated(currcons)) | |
218 | goto unlock_out; | |
219 | vc = vc_cons[currcons].d; | |
220 | ||
221 | ret = -EINVAL; | |
222 | if (pos < 0) | |
223 | goto unlock_out; | |
47725ac7 NP |
224 | poll = file->private_data; |
225 | if (count && poll) | |
226 | poll->seen_last_update = true; | |
1da177e4 LT |
227 | read = 0; |
228 | ret = 0; | |
229 | while (count) { | |
230 | char *con_buf0, *con_buf_start; | |
231 | long this_round, size; | |
232 | ssize_t orig_count; | |
233 | long p = pos; | |
234 | ||
235 | /* Check whether we are above size each round, | |
236 | * as copy_to_user at the end of this loop | |
237 | * could sleep. | |
238 | */ | |
239 | size = vcs_size(inode); | |
240 | if (pos >= size) | |
241 | break; | |
242 | if (count > size - pos) | |
243 | count = size - pos; | |
244 | ||
245 | this_round = count; | |
246 | if (this_round > CON_BUF_SIZE) | |
247 | this_round = CON_BUF_SIZE; | |
248 | ||
249 | /* Perform the whole read into the local con_buf. | |
250 | * Then we can drop the console spinlock and safely | |
251 | * attempt to move it to userspace. | |
252 | */ | |
253 | ||
254 | con_buf_start = con_buf0 = con_buf; | |
255 | orig_count = this_round; | |
256 | maxcol = vc->vc_cols; | |
257 | if (!attr) { | |
258 | org = screen_pos(vc, p, viewed); | |
259 | col = p % maxcol; | |
260 | p += maxcol - col; | |
261 | while (this_round-- > 0) { | |
262 | *con_buf0++ = (vcs_scr_readw(vc, org++) & 0xff); | |
263 | if (++col == maxcol) { | |
264 | org = screen_pos(vc, p, viewed); | |
265 | col = 0; | |
266 | p += maxcol; | |
267 | } | |
268 | } | |
269 | } else { | |
270 | if (p < HEADER_SIZE) { | |
271 | size_t tmp_count; | |
272 | ||
273 | con_buf0[0] = (char)vc->vc_rows; | |
274 | con_buf0[1] = (char)vc->vc_cols; | |
275 | getconsxy(vc, con_buf0 + 2); | |
276 | ||
277 | con_buf_start += p; | |
278 | this_round += p; | |
279 | if (this_round > CON_BUF_SIZE) { | |
280 | this_round = CON_BUF_SIZE; | |
281 | orig_count = this_round - p; | |
282 | } | |
283 | ||
284 | tmp_count = HEADER_SIZE; | |
285 | if (tmp_count > this_round) | |
286 | tmp_count = this_round; | |
287 | ||
288 | /* Advance state pointers and move on. */ | |
289 | this_round -= tmp_count; | |
290 | p = HEADER_SIZE; | |
291 | con_buf0 = con_buf + HEADER_SIZE; | |
292 | /* If this_round >= 0, then p is even... */ | |
293 | } else if (p & 1) { | |
294 | /* Skip first byte for output if start address is odd | |
295 | * Update region sizes up/down depending on free | |
296 | * space in buffer. | |
297 | */ | |
298 | con_buf_start++; | |
299 | if (this_round < CON_BUF_SIZE) | |
300 | this_round++; | |
301 | else | |
302 | orig_count--; | |
303 | } | |
304 | if (this_round > 0) { | |
305 | unsigned short *tmp_buf = (unsigned short *)con_buf0; | |
306 | ||
307 | p -= HEADER_SIZE; | |
308 | p /= 2; | |
309 | col = p % maxcol; | |
310 | ||
311 | org = screen_pos(vc, p, viewed); | |
312 | p += maxcol - col; | |
313 | ||
314 | /* Buffer has even length, so we can always copy | |
315 | * character + attribute. We do not copy last byte | |
316 | * to userspace if this_round is odd. | |
317 | */ | |
318 | this_round = (this_round + 1) >> 1; | |
319 | ||
320 | while (this_round) { | |
321 | *tmp_buf++ = vcs_scr_readw(vc, org++); | |
322 | this_round --; | |
323 | if (++col == maxcol) { | |
324 | org = screen_pos(vc, p, viewed); | |
325 | col = 0; | |
326 | p += maxcol; | |
327 | } | |
328 | } | |
329 | } | |
330 | } | |
331 | ||
332 | /* Finally, release the console semaphore while we push | |
333 | * all the data to userspace from our temporary buffer. | |
334 | * | |
335 | * AKPM: Even though it's a semaphore, we should drop it because | |
336 | * the pagefault handling code may want to call printk(). | |
337 | */ | |
338 | ||
339 | release_console_sem(); | |
340 | ret = copy_to_user(buf, con_buf_start, orig_count); | |
341 | acquire_console_sem(); | |
342 | ||
343 | if (ret) { | |
344 | read += (orig_count - ret); | |
345 | ret = -EFAULT; | |
346 | break; | |
347 | } | |
348 | buf += orig_count; | |
349 | pos += orig_count; | |
350 | read += orig_count; | |
351 | count -= orig_count; | |
352 | } | |
353 | *ppos += read; | |
354 | if (read) | |
355 | ret = read; | |
356 | unlock_out: | |
357 | release_console_sem(); | |
c831c338 | 358 | mutex_unlock(&con_buf_mtx); |
1da177e4 LT |
359 | return ret; |
360 | } | |
361 | ||
362 | static ssize_t | |
363 | vcs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) | |
364 | { | |
a7113a96 | 365 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
366 | unsigned int currcons = iminor(inode); |
367 | struct vc_data *vc; | |
368 | long pos; | |
369 | long viewed, attr, size, written; | |
370 | char *con_buf0; | |
371 | int col, maxcol; | |
372 | u16 *org0 = NULL, *org = NULL; | |
373 | size_t ret; | |
374 | ||
c831c338 | 375 | mutex_lock(&con_buf_mtx); |
1da177e4 LT |
376 | |
377 | pos = *ppos; | |
378 | ||
379 | /* Select the proper current console and verify | |
380 | * sanity of the situation under the console lock. | |
381 | */ | |
382 | acquire_console_sem(); | |
383 | ||
384 | attr = (currcons & 128); | |
385 | currcons = (currcons & 127); | |
386 | ||
387 | if (currcons == 0) { | |
388 | currcons = fg_console; | |
389 | viewed = 1; | |
390 | } else { | |
391 | currcons--; | |
392 | viewed = 0; | |
393 | } | |
394 | ret = -ENXIO; | |
395 | if (!vc_cons_allocated(currcons)) | |
396 | goto unlock_out; | |
397 | vc = vc_cons[currcons].d; | |
398 | ||
399 | size = vcs_size(inode); | |
400 | ret = -EINVAL; | |
401 | if (pos < 0 || pos > size) | |
402 | goto unlock_out; | |
403 | if (count > size - pos) | |
404 | count = size - pos; | |
405 | written = 0; | |
406 | while (count) { | |
407 | long this_round = count; | |
408 | size_t orig_count; | |
409 | long p; | |
410 | ||
411 | if (this_round > CON_BUF_SIZE) | |
412 | this_round = CON_BUF_SIZE; | |
413 | ||
414 | /* Temporarily drop the console lock so that we can read | |
415 | * in the write data from userspace safely. | |
416 | */ | |
417 | release_console_sem(); | |
418 | ret = copy_from_user(con_buf, buf, this_round); | |
419 | acquire_console_sem(); | |
420 | ||
421 | if (ret) { | |
422 | this_round -= ret; | |
423 | if (!this_round) { | |
424 | /* Abort loop if no data were copied. Otherwise | |
425 | * fail with -EFAULT. | |
426 | */ | |
427 | if (written) | |
428 | break; | |
429 | ret = -EFAULT; | |
430 | goto unlock_out; | |
431 | } | |
432 | } | |
433 | ||
434 | /* The vcs_size might have changed while we slept to grab | |
435 | * the user buffer, so recheck. | |
436 | * Return data written up to now on failure. | |
437 | */ | |
438 | size = vcs_size(inode); | |
439 | if (pos >= size) | |
440 | break; | |
441 | if (this_round > size - pos) | |
442 | this_round = size - pos; | |
443 | ||
444 | /* OK, now actually push the write to the console | |
445 | * under the lock using the local kernel buffer. | |
446 | */ | |
447 | ||
448 | con_buf0 = con_buf; | |
449 | orig_count = this_round; | |
450 | maxcol = vc->vc_cols; | |
451 | p = pos; | |
452 | if (!attr) { | |
453 | org0 = org = screen_pos(vc, p, viewed); | |
454 | col = p % maxcol; | |
455 | p += maxcol - col; | |
456 | ||
457 | while (this_round > 0) { | |
458 | unsigned char c = *con_buf0++; | |
459 | ||
460 | this_round--; | |
461 | vcs_scr_writew(vc, | |
462 | (vcs_scr_readw(vc, org) & 0xff00) | c, org); | |
463 | org++; | |
464 | if (++col == maxcol) { | |
465 | org = screen_pos(vc, p, viewed); | |
466 | col = 0; | |
467 | p += maxcol; | |
468 | } | |
469 | } | |
470 | } else { | |
471 | if (p < HEADER_SIZE) { | |
472 | char header[HEADER_SIZE]; | |
473 | ||
474 | getconsxy(vc, header + 2); | |
475 | while (p < HEADER_SIZE && this_round > 0) { | |
476 | this_round--; | |
477 | header[p++] = *con_buf0++; | |
478 | } | |
479 | if (!viewed) | |
480 | putconsxy(vc, header + 2); | |
481 | } | |
482 | p -= HEADER_SIZE; | |
483 | col = (p/2) % maxcol; | |
484 | if (this_round > 0) { | |
485 | org0 = org = screen_pos(vc, p/2, viewed); | |
486 | if ((p & 1) && this_round > 0) { | |
487 | char c; | |
488 | ||
489 | this_round--; | |
490 | c = *con_buf0++; | |
491 | #ifdef __BIG_ENDIAN | |
492 | vcs_scr_writew(vc, c | | |
493 | (vcs_scr_readw(vc, org) & 0xff00), org); | |
494 | #else | |
495 | vcs_scr_writew(vc, (c << 8) | | |
496 | (vcs_scr_readw(vc, org) & 0xff), org); | |
497 | #endif | |
498 | org++; | |
499 | p++; | |
500 | if (++col == maxcol) { | |
501 | org = screen_pos(vc, p/2, viewed); | |
502 | col = 0; | |
503 | } | |
504 | } | |
505 | p /= 2; | |
506 | p += maxcol - col; | |
507 | } | |
508 | while (this_round > 1) { | |
509 | unsigned short w; | |
510 | ||
ee025949 | 511 | w = get_unaligned(((unsigned short *)con_buf0)); |
1da177e4 LT |
512 | vcs_scr_writew(vc, w, org++); |
513 | con_buf0 += 2; | |
514 | this_round -= 2; | |
515 | if (++col == maxcol) { | |
516 | org = screen_pos(vc, p, viewed); | |
517 | col = 0; | |
518 | p += maxcol; | |
519 | } | |
520 | } | |
521 | if (this_round > 0) { | |
522 | unsigned char c; | |
523 | ||
524 | c = *con_buf0++; | |
525 | #ifdef __BIG_ENDIAN | |
526 | vcs_scr_writew(vc, (vcs_scr_readw(vc, org) & 0xff) | (c << 8), org); | |
527 | #else | |
528 | vcs_scr_writew(vc, (vcs_scr_readw(vc, org) & 0xff00) | c, org); | |
529 | #endif | |
530 | } | |
531 | } | |
532 | count -= orig_count; | |
533 | written += orig_count; | |
534 | buf += orig_count; | |
535 | pos += orig_count; | |
536 | if (org0) | |
537 | update_region(vc, (unsigned long)(org0), org - org0); | |
538 | } | |
539 | *ppos += written; | |
540 | ret = written; | |
432c9ed2 NP |
541 | if (written) |
542 | vcs_scr_updated(vc); | |
1da177e4 LT |
543 | |
544 | unlock_out: | |
545 | release_console_sem(); | |
546 | ||
c831c338 | 547 | mutex_unlock(&con_buf_mtx); |
1da177e4 LT |
548 | |
549 | return ret; | |
550 | } | |
551 | ||
47725ac7 NP |
552 | static unsigned int |
553 | vcs_poll(struct file *file, poll_table *wait) | |
554 | { | |
555 | struct vcs_poll_data *poll = vcs_poll_data_get(file); | |
556 | int ret = 0; | |
557 | ||
558 | if (poll) { | |
559 | poll_wait(file, &poll->waitq, wait); | |
560 | if (!poll->seen_last_update) | |
561 | ret = POLLIN | POLLRDNORM; | |
562 | } | |
563 | return ret; | |
564 | } | |
565 | ||
566 | static int | |
567 | vcs_fasync(int fd, struct file *file, int on) | |
568 | { | |
569 | struct vcs_poll_data *poll = file->private_data; | |
570 | ||
571 | if (!poll) { | |
572 | /* don't allocate anything if all we want is disable fasync */ | |
573 | if (!on) | |
574 | return 0; | |
575 | poll = vcs_poll_data_get(file); | |
576 | if (!poll) | |
577 | return -ENOMEM; | |
578 | } | |
579 | ||
580 | return fasync_helper(fd, file, on, &poll->fasync); | |
581 | } | |
582 | ||
1da177e4 LT |
583 | static int |
584 | vcs_open(struct inode *inode, struct file *filp) | |
585 | { | |
586 | unsigned int currcons = iminor(inode) & 127; | |
f97259e3 JC |
587 | int ret = 0; |
588 | ||
ec79d605 | 589 | tty_lock(); |
1da177e4 | 590 | if(currcons && !vc_cons_allocated(currcons-1)) |
f97259e3 | 591 | ret = -ENXIO; |
ec79d605 | 592 | tty_unlock(); |
f97259e3 | 593 | return ret; |
1da177e4 LT |
594 | } |
595 | ||
47725ac7 NP |
596 | static int vcs_release(struct inode *inode, struct file *file) |
597 | { | |
598 | struct vcs_poll_data *poll = file->private_data; | |
599 | ||
600 | if (poll) | |
601 | vcs_poll_data_free(poll); | |
602 | return 0; | |
603 | } | |
604 | ||
62322d25 | 605 | static const struct file_operations vcs_fops = { |
1da177e4 LT |
606 | .llseek = vcs_lseek, |
607 | .read = vcs_read, | |
608 | .write = vcs_write, | |
47725ac7 NP |
609 | .poll = vcs_poll, |
610 | .fasync = vcs_fasync, | |
1da177e4 | 611 | .open = vcs_open, |
47725ac7 | 612 | .release = vcs_release, |
1da177e4 LT |
613 | }; |
614 | ||
ca8eca68 | 615 | static struct class *vc_class; |
1da177e4 | 616 | |
4995f8ef | 617 | void vcs_make_sysfs(int index) |
1da177e4 | 618 | { |
4995f8ef KS |
619 | device_create(vc_class, NULL, MKDEV(VCS_MAJOR, index + 1), NULL, |
620 | "vcs%u", index + 1); | |
621 | device_create(vc_class, NULL, MKDEV(VCS_MAJOR, index + 129), NULL, | |
622 | "vcsa%u", index + 1); | |
1da177e4 | 623 | } |
d09d7ddf | 624 | |
4995f8ef | 625 | void vcs_remove_sysfs(int index) |
1da177e4 | 626 | { |
4995f8ef KS |
627 | device_destroy(vc_class, MKDEV(VCS_MAJOR, index + 1)); |
628 | device_destroy(vc_class, MKDEV(VCS_MAJOR, index + 129)); | |
1da177e4 LT |
629 | } |
630 | ||
631 | int __init vcs_init(void) | |
632 | { | |
c46a7aec KS |
633 | unsigned int i; |
634 | ||
1da177e4 LT |
635 | if (register_chrdev(VCS_MAJOR, "vcs", &vcs_fops)) |
636 | panic("unable to get major %d for vcs device", VCS_MAJOR); | |
ca8eca68 | 637 | vc_class = class_create(THIS_MODULE, "vc"); |
1da177e4 | 638 | |
03457cd4 GKH |
639 | device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 0), NULL, "vcs"); |
640 | device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 128), NULL, "vcsa"); | |
c46a7aec KS |
641 | for (i = 0; i < MIN_NR_CONSOLES; i++) |
642 | vcs_make_sysfs(i); | |
1da177e4 LT |
643 | return 0; |
644 | } |