Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * User level driver support for input subsystem | |
3 | * | |
4 | * Heavily based on evdev.c by Vojtech Pavlik | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org> | |
21 | * | |
22 | * Changes/Revisions: | |
23 | * 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>) | |
24 | * - added force feedback support | |
25 | * - added UI_SET_PHYS | |
26 | * 0.1 20/06/2002 | |
27 | * - first public version | |
28 | */ | |
29 | #include <linux/poll.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/input.h> | |
34 | #include <linux/smp_lock.h> | |
35 | #include <linux/fs.h> | |
36 | #include <linux/miscdevice.h> | |
37 | #include <linux/uinput.h> | |
38 | ||
1da177e4 LT |
39 | static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
40 | { | |
41 | struct uinput_device *udev; | |
42 | ||
43 | udev = dev->private; | |
44 | ||
45 | udev->buff[udev->head].type = type; | |
46 | udev->buff[udev->head].code = code; | |
47 | udev->buff[udev->head].value = value; | |
48 | do_gettimeofday(&udev->buff[udev->head].time); | |
49 | udev->head = (udev->head + 1) % UINPUT_BUFFER_SIZE; | |
50 | ||
51 | wake_up_interruptible(&udev->waitq); | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
0048e603 | 56 | static int uinput_request_alloc_id(struct uinput_device *udev, struct uinput_request *request) |
1da177e4 LT |
57 | { |
58 | /* Atomically allocate an ID for the given request. Returns 0 on success. */ | |
1da177e4 | 59 | int id; |
152c12f5 | 60 | int err = -1; |
1da177e4 | 61 | |
0048e603 | 62 | spin_lock(&udev->requests_lock); |
152c12f5 DT |
63 | |
64 | for (id = 0; id < UINPUT_NUM_REQUESTS; id++) | |
1da177e4 | 65 | if (!udev->requests[id]) { |
1da177e4 | 66 | request->id = id; |
0048e603 | 67 | udev->requests[id] = request; |
152c12f5 DT |
68 | err = 0; |
69 | break; | |
1da177e4 | 70 | } |
152c12f5 | 71 | |
0048e603 | 72 | spin_unlock(&udev->requests_lock); |
152c12f5 | 73 | return err; |
1da177e4 LT |
74 | } |
75 | ||
76 | static struct uinput_request* uinput_request_find(struct uinput_device *udev, int id) | |
77 | { | |
78 | /* Find an input request, by ID. Returns NULL if the ID isn't valid. */ | |
79 | if (id >= UINPUT_NUM_REQUESTS || id < 0) | |
80 | return NULL; | |
1da177e4 LT |
81 | return udev->requests[id]; |
82 | } | |
83 | ||
0048e603 | 84 | static inline int uinput_request_reserve_slot(struct uinput_device *udev, struct uinput_request *request) |
1da177e4 | 85 | { |
0048e603 DT |
86 | /* Allocate slot. If none are available right away, wait. */ |
87 | return wait_event_interruptible(udev->requests_waitq, | |
88 | !uinput_request_alloc_id(udev, request)); | |
89 | } | |
1da177e4 | 90 | |
0048e603 DT |
91 | static void uinput_request_done(struct uinput_device *udev, struct uinput_request *request) |
92 | { | |
0048e603 DT |
93 | /* Mark slot as available */ |
94 | udev->requests[request->id] = NULL; | |
95 | wake_up_interruptible(&udev->requests_waitq); | |
e7507ed9 DT |
96 | |
97 | complete(&request->done); | |
1da177e4 LT |
98 | } |
99 | ||
0048e603 | 100 | static int uinput_request_submit(struct input_dev *dev, struct uinput_request *request) |
1da177e4 | 101 | { |
1da177e4 LT |
102 | int retval; |
103 | ||
104 | /* Tell our userspace app about this new request by queueing an input event */ | |
105 | uinput_dev_event(dev, EV_UINPUT, request->code, request->id); | |
106 | ||
107 | /* Wait for the request to complete */ | |
0048e603 DT |
108 | retval = wait_for_completion_interruptible(&request->done); |
109 | if (!retval) | |
110 | retval = request->retval; | |
1da177e4 | 111 | |
0048e603 | 112 | return retval; |
1da177e4 LT |
113 | } |
114 | ||
115 | static int uinput_dev_upload_effect(struct input_dev *dev, struct ff_effect *effect) | |
116 | { | |
117 | struct uinput_request request; | |
0048e603 | 118 | int retval; |
1da177e4 LT |
119 | |
120 | if (!test_bit(EV_FF, dev->evbit)) | |
121 | return -ENOSYS; | |
122 | ||
0048e603 DT |
123 | request.id = -1; |
124 | init_completion(&request.done); | |
125 | request.code = UI_FF_UPLOAD; | |
1da177e4 | 126 | request.u.effect = effect; |
0048e603 DT |
127 | |
128 | retval = uinput_request_reserve_slot(dev->private, &request); | |
129 | if (!retval) | |
130 | retval = uinput_request_submit(dev, &request); | |
131 | ||
132 | return retval; | |
1da177e4 LT |
133 | } |
134 | ||
135 | static int uinput_dev_erase_effect(struct input_dev *dev, int effect_id) | |
136 | { | |
137 | struct uinput_request request; | |
0048e603 | 138 | int retval; |
1da177e4 LT |
139 | |
140 | if (!test_bit(EV_FF, dev->evbit)) | |
141 | return -ENOSYS; | |
142 | ||
0048e603 DT |
143 | request.id = -1; |
144 | init_completion(&request.done); | |
145 | request.code = UI_FF_ERASE; | |
1da177e4 | 146 | request.u.effect_id = effect_id; |
0048e603 DT |
147 | |
148 | retval = uinput_request_reserve_slot(dev->private, &request); | |
149 | if (!retval) | |
150 | retval = uinput_request_submit(dev, &request); | |
151 | ||
152 | return retval; | |
1da177e4 LT |
153 | } |
154 | ||
155 | static int uinput_create_device(struct uinput_device *udev) | |
156 | { | |
157 | if (!udev->dev->name) { | |
158 | printk(KERN_DEBUG "%s: write device info first\n", UINPUT_NAME); | |
159 | return -EINVAL; | |
160 | } | |
161 | ||
1da177e4 LT |
162 | udev->dev->event = uinput_dev_event; |
163 | udev->dev->upload_effect = uinput_dev_upload_effect; | |
164 | udev->dev->erase_effect = uinput_dev_erase_effect; | |
165 | udev->dev->private = udev; | |
166 | ||
152c12f5 | 167 | init_waitqueue_head(&udev->waitq); |
1da177e4 LT |
168 | |
169 | input_register_device(udev->dev); | |
170 | ||
152c12f5 | 171 | set_bit(UIST_CREATED, &udev->state); |
1da177e4 LT |
172 | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static int uinput_destroy_device(struct uinput_device *udev) | |
177 | { | |
152c12f5 | 178 | if (!test_bit(UIST_CREATED, &udev->state)) { |
1da177e4 LT |
179 | printk(KERN_WARNING "%s: create the device first\n", UINPUT_NAME); |
180 | return -EINVAL; | |
181 | } | |
182 | ||
183 | input_unregister_device(udev->dev); | |
184 | ||
152c12f5 | 185 | clear_bit(UIST_CREATED, &udev->state); |
1da177e4 LT |
186 | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static int uinput_open(struct inode *inode, struct file *file) | |
191 | { | |
192 | struct uinput_device *newdev; | |
193 | struct input_dev *newinput; | |
194 | ||
195 | newdev = kmalloc(sizeof(struct uinput_device), GFP_KERNEL); | |
196 | if (!newdev) | |
197 | goto error; | |
198 | memset(newdev, 0, sizeof(struct uinput_device)); | |
0048e603 | 199 | spin_lock_init(&newdev->requests_lock); |
1da177e4 LT |
200 | init_waitqueue_head(&newdev->requests_waitq); |
201 | ||
202 | newinput = kmalloc(sizeof(struct input_dev), GFP_KERNEL); | |
203 | if (!newinput) | |
204 | goto cleanup; | |
205 | memset(newinput, 0, sizeof(struct input_dev)); | |
206 | ||
207 | newdev->dev = newinput; | |
208 | ||
209 | file->private_data = newdev; | |
210 | ||
211 | return 0; | |
212 | cleanup: | |
213 | kfree(newdev); | |
214 | error: | |
215 | return -ENOMEM; | |
216 | } | |
217 | ||
218 | static int uinput_validate_absbits(struct input_dev *dev) | |
219 | { | |
220 | unsigned int cnt; | |
221 | int retval = 0; | |
222 | ||
223 | for (cnt = 0; cnt < ABS_MAX + 1; cnt++) { | |
224 | if (!test_bit(cnt, dev->absbit)) | |
225 | continue; | |
226 | ||
227 | if ((dev->absmax[cnt] <= dev->absmin[cnt])) { | |
228 | printk(KERN_DEBUG | |
229 | "%s: invalid abs[%02x] min:%d max:%d\n", | |
230 | UINPUT_NAME, cnt, | |
231 | dev->absmin[cnt], dev->absmax[cnt]); | |
232 | retval = -EINVAL; | |
233 | break; | |
234 | } | |
235 | ||
236 | if (dev->absflat[cnt] > (dev->absmax[cnt] - dev->absmin[cnt])) { | |
237 | printk(KERN_DEBUG | |
238 | "%s: absflat[%02x] out of range: %d " | |
239 | "(min:%d/max:%d)\n", | |
240 | UINPUT_NAME, cnt, dev->absflat[cnt], | |
241 | dev->absmin[cnt], dev->absmax[cnt]); | |
242 | retval = -EINVAL; | |
243 | break; | |
244 | } | |
245 | } | |
246 | return retval; | |
247 | } | |
248 | ||
249 | static int uinput_alloc_device(struct file *file, const char __user *buffer, size_t count) | |
250 | { | |
251 | struct uinput_user_dev *user_dev; | |
252 | struct input_dev *dev; | |
253 | struct uinput_device *udev; | |
5b6271bd | 254 | char *name; |
152c12f5 DT |
255 | int size; |
256 | int retval; | |
1da177e4 LT |
257 | |
258 | retval = count; | |
259 | ||
260 | udev = file->private_data; | |
261 | dev = udev->dev; | |
262 | ||
152c12f5 | 263 | user_dev = kmalloc(sizeof(struct uinput_user_dev), GFP_KERNEL); |
1da177e4 LT |
264 | if (!user_dev) { |
265 | retval = -ENOMEM; | |
266 | goto exit; | |
267 | } | |
268 | ||
269 | if (copy_from_user(user_dev, buffer, sizeof(struct uinput_user_dev))) { | |
270 | retval = -EFAULT; | |
271 | goto exit; | |
272 | } | |
273 | ||
6044ec88 | 274 | kfree(dev->name); |
1da177e4 LT |
275 | |
276 | size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1; | |
5b6271bd DT |
277 | dev->name = name = kmalloc(size, GFP_KERNEL); |
278 | if (!name) { | |
1da177e4 LT |
279 | retval = -ENOMEM; |
280 | goto exit; | |
281 | } | |
5b6271bd | 282 | strlcpy(name, user_dev->name, size); |
1da177e4 | 283 | |
1da177e4 LT |
284 | dev->id.bustype = user_dev->id.bustype; |
285 | dev->id.vendor = user_dev->id.vendor; | |
286 | dev->id.product = user_dev->id.product; | |
287 | dev->id.version = user_dev->id.version; | |
288 | dev->ff_effects_max = user_dev->ff_effects_max; | |
289 | ||
290 | size = sizeof(int) * (ABS_MAX + 1); | |
291 | memcpy(dev->absmax, user_dev->absmax, size); | |
292 | memcpy(dev->absmin, user_dev->absmin, size); | |
293 | memcpy(dev->absfuzz, user_dev->absfuzz, size); | |
294 | memcpy(dev->absflat, user_dev->absflat, size); | |
295 | ||
296 | /* check if absmin/absmax/absfuzz/absflat are filled as | |
297 | * told in Documentation/input/input-programming.txt */ | |
298 | if (test_bit(EV_ABS, dev->evbit)) { | |
b6cbf3ef IC |
299 | int err = uinput_validate_absbits(dev); |
300 | if (err < 0) { | |
301 | retval = err; | |
1da177e4 | 302 | kfree(dev->name); |
b6cbf3ef | 303 | } |
1da177e4 LT |
304 | } |
305 | ||
306 | exit: | |
307 | kfree(user_dev); | |
308 | return retval; | |
309 | } | |
310 | ||
311 | static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) | |
312 | { | |
313 | struct uinput_device *udev = file->private_data; | |
314 | ||
152c12f5 | 315 | if (test_bit(UIST_CREATED, &udev->state)) { |
1da177e4 LT |
316 | struct input_event ev; |
317 | ||
318 | if (copy_from_user(&ev, buffer, sizeof(struct input_event))) | |
319 | return -EFAULT; | |
320 | input_event(udev->dev, ev.type, ev.code, ev.value); | |
152c12f5 | 321 | } else |
1da177e4 LT |
322 | count = uinput_alloc_device(file, buffer, count); |
323 | ||
324 | return count; | |
325 | } | |
326 | ||
327 | static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) | |
328 | { | |
329 | struct uinput_device *udev = file->private_data; | |
330 | int retval = 0; | |
331 | ||
152c12f5 | 332 | if (!test_bit(UIST_CREATED, &udev->state)) |
1da177e4 LT |
333 | return -ENODEV; |
334 | ||
152c12f5 | 335 | if (udev->head == udev->tail && (file->f_flags & O_NONBLOCK)) |
1da177e4 LT |
336 | return -EAGAIN; |
337 | ||
338 | retval = wait_event_interruptible(udev->waitq, | |
152c12f5 | 339 | udev->head != udev->tail || !test_bit(UIST_CREATED, &udev->state)); |
1da177e4 LT |
340 | if (retval) |
341 | return retval; | |
342 | ||
152c12f5 | 343 | if (!test_bit(UIST_CREATED, &udev->state)) |
1da177e4 LT |
344 | return -ENODEV; |
345 | ||
346 | while ((udev->head != udev->tail) && | |
347 | (retval + sizeof(struct input_event) <= count)) { | |
152c12f5 DT |
348 | if (copy_to_user(buffer + retval, &udev->buff[udev->tail], sizeof(struct input_event))) |
349 | return -EFAULT; | |
1da177e4 LT |
350 | udev->tail = (udev->tail + 1) % UINPUT_BUFFER_SIZE; |
351 | retval += sizeof(struct input_event); | |
352 | } | |
353 | ||
354 | return retval; | |
355 | } | |
356 | ||
357 | static unsigned int uinput_poll(struct file *file, poll_table *wait) | |
358 | { | |
359 | struct uinput_device *udev = file->private_data; | |
360 | ||
361 | poll_wait(file, &udev->waitq, wait); | |
362 | ||
363 | if (udev->head != udev->tail) | |
364 | return POLLIN | POLLRDNORM; | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | static int uinput_burn_device(struct uinput_device *udev) | |
370 | { | |
152c12f5 | 371 | if (test_bit(UIST_CREATED, &udev->state)) |
1da177e4 LT |
372 | uinput_destroy_device(udev); |
373 | ||
6044ec88 JJ |
374 | kfree(udev->dev->name); |
375 | kfree(udev->dev->phys); | |
1da177e4 LT |
376 | kfree(udev->dev); |
377 | kfree(udev); | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | static int uinput_close(struct inode *inode, struct file *file) | |
383 | { | |
152c12f5 DT |
384 | uinput_burn_device(file->private_data); |
385 | return 0; | |
1da177e4 LT |
386 | } |
387 | ||
388 | static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
389 | { | |
390 | int retval = 0; | |
391 | struct uinput_device *udev; | |
392 | void __user *p = (void __user *)arg; | |
393 | struct uinput_ff_upload ff_up; | |
394 | struct uinput_ff_erase ff_erase; | |
395 | struct uinput_request *req; | |
396 | int length; | |
5b6271bd | 397 | char *phys; |
1da177e4 LT |
398 | |
399 | udev = file->private_data; | |
400 | ||
401 | /* device attributes can not be changed after the device is created */ | |
402 | switch (cmd) { | |
403 | case UI_SET_EVBIT: | |
404 | case UI_SET_KEYBIT: | |
405 | case UI_SET_RELBIT: | |
406 | case UI_SET_ABSBIT: | |
407 | case UI_SET_MSCBIT: | |
408 | case UI_SET_LEDBIT: | |
409 | case UI_SET_SNDBIT: | |
410 | case UI_SET_FFBIT: | |
411 | case UI_SET_PHYS: | |
152c12f5 | 412 | if (test_bit(UIST_CREATED, &udev->state)) |
1da177e4 LT |
413 | return -EINVAL; |
414 | } | |
415 | ||
416 | switch (cmd) { | |
417 | case UI_DEV_CREATE: | |
418 | retval = uinput_create_device(udev); | |
419 | break; | |
420 | ||
421 | case UI_DEV_DESTROY: | |
422 | retval = uinput_destroy_device(udev); | |
423 | break; | |
424 | ||
425 | case UI_SET_EVBIT: | |
426 | if (arg > EV_MAX) { | |
427 | retval = -EINVAL; | |
428 | break; | |
429 | } | |
430 | set_bit(arg, udev->dev->evbit); | |
431 | break; | |
432 | ||
433 | case UI_SET_KEYBIT: | |
434 | if (arg > KEY_MAX) { | |
435 | retval = -EINVAL; | |
436 | break; | |
437 | } | |
438 | set_bit(arg, udev->dev->keybit); | |
439 | break; | |
440 | ||
441 | case UI_SET_RELBIT: | |
442 | if (arg > REL_MAX) { | |
443 | retval = -EINVAL; | |
444 | break; | |
445 | } | |
446 | set_bit(arg, udev->dev->relbit); | |
447 | break; | |
448 | ||
449 | case UI_SET_ABSBIT: | |
450 | if (arg > ABS_MAX) { | |
451 | retval = -EINVAL; | |
452 | break; | |
453 | } | |
454 | set_bit(arg, udev->dev->absbit); | |
455 | break; | |
456 | ||
457 | case UI_SET_MSCBIT: | |
458 | if (arg > MSC_MAX) { | |
459 | retval = -EINVAL; | |
460 | break; | |
461 | } | |
462 | set_bit(arg, udev->dev->mscbit); | |
463 | break; | |
464 | ||
465 | case UI_SET_LEDBIT: | |
466 | if (arg > LED_MAX) { | |
467 | retval = -EINVAL; | |
468 | break; | |
469 | } | |
470 | set_bit(arg, udev->dev->ledbit); | |
471 | break; | |
472 | ||
473 | case UI_SET_SNDBIT: | |
474 | if (arg > SND_MAX) { | |
475 | retval = -EINVAL; | |
476 | break; | |
477 | } | |
478 | set_bit(arg, udev->dev->sndbit); | |
479 | break; | |
480 | ||
481 | case UI_SET_FFBIT: | |
482 | if (arg > FF_MAX) { | |
483 | retval = -EINVAL; | |
484 | break; | |
485 | } | |
486 | set_bit(arg, udev->dev->ffbit); | |
487 | break; | |
488 | ||
489 | case UI_SET_PHYS: | |
490 | length = strnlen_user(p, 1024); | |
491 | if (length <= 0) { | |
492 | retval = -EFAULT; | |
493 | break; | |
494 | } | |
5b6271bd DT |
495 | kfree(udev->dev->phys); |
496 | udev->dev->phys = phys = kmalloc(length, GFP_KERNEL); | |
497 | if (!phys) { | |
1da177e4 LT |
498 | retval = -ENOMEM; |
499 | break; | |
500 | } | |
5b6271bd | 501 | if (copy_from_user(phys, p, length)) { |
1da177e4 | 502 | udev->dev->phys = NULL; |
5b6271bd DT |
503 | kfree(phys); |
504 | retval = -EFAULT; | |
1da177e4 LT |
505 | break; |
506 | } | |
5b6271bd | 507 | phys[length - 1] = '\0'; |
1da177e4 LT |
508 | break; |
509 | ||
510 | case UI_BEGIN_FF_UPLOAD: | |
511 | if (copy_from_user(&ff_up, p, sizeof(ff_up))) { | |
512 | retval = -EFAULT; | |
513 | break; | |
514 | } | |
515 | req = uinput_request_find(udev, ff_up.request_id); | |
152c12f5 | 516 | if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) { |
1da177e4 LT |
517 | retval = -EINVAL; |
518 | break; | |
519 | } | |
520 | ff_up.retval = 0; | |
521 | memcpy(&ff_up.effect, req->u.effect, sizeof(struct ff_effect)); | |
522 | if (copy_to_user(p, &ff_up, sizeof(ff_up))) { | |
523 | retval = -EFAULT; | |
524 | break; | |
525 | } | |
526 | break; | |
527 | ||
528 | case UI_BEGIN_FF_ERASE: | |
529 | if (copy_from_user(&ff_erase, p, sizeof(ff_erase))) { | |
530 | retval = -EFAULT; | |
531 | break; | |
532 | } | |
533 | req = uinput_request_find(udev, ff_erase.request_id); | |
152c12f5 | 534 | if (!(req && req->code == UI_FF_ERASE)) { |
1da177e4 LT |
535 | retval = -EINVAL; |
536 | break; | |
537 | } | |
538 | ff_erase.retval = 0; | |
539 | ff_erase.effect_id = req->u.effect_id; | |
540 | if (copy_to_user(p, &ff_erase, sizeof(ff_erase))) { | |
541 | retval = -EFAULT; | |
542 | break; | |
543 | } | |
544 | break; | |
545 | ||
546 | case UI_END_FF_UPLOAD: | |
547 | if (copy_from_user(&ff_up, p, sizeof(ff_up))) { | |
548 | retval = -EFAULT; | |
549 | break; | |
550 | } | |
551 | req = uinput_request_find(udev, ff_up.request_id); | |
152c12f5 | 552 | if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) { |
1da177e4 LT |
553 | retval = -EINVAL; |
554 | break; | |
555 | } | |
556 | req->retval = ff_up.retval; | |
557 | memcpy(req->u.effect, &ff_up.effect, sizeof(struct ff_effect)); | |
0048e603 | 558 | uinput_request_done(udev, req); |
1da177e4 LT |
559 | break; |
560 | ||
561 | case UI_END_FF_ERASE: | |
562 | if (copy_from_user(&ff_erase, p, sizeof(ff_erase))) { | |
563 | retval = -EFAULT; | |
564 | break; | |
565 | } | |
566 | req = uinput_request_find(udev, ff_erase.request_id); | |
152c12f5 | 567 | if (!(req && req->code == UI_FF_ERASE)) { |
1da177e4 LT |
568 | retval = -EINVAL; |
569 | break; | |
570 | } | |
571 | req->retval = ff_erase.retval; | |
0048e603 | 572 | uinput_request_done(udev, req); |
1da177e4 LT |
573 | break; |
574 | ||
575 | default: | |
576 | retval = -EINVAL; | |
577 | } | |
578 | return retval; | |
579 | } | |
580 | ||
581 | static struct file_operations uinput_fops = { | |
582 | .owner = THIS_MODULE, | |
583 | .open = uinput_open, | |
584 | .release = uinput_close, | |
585 | .read = uinput_read, | |
586 | .write = uinput_write, | |
587 | .poll = uinput_poll, | |
588 | .ioctl = uinput_ioctl, | |
589 | }; | |
590 | ||
591 | static struct miscdevice uinput_misc = { | |
592 | .fops = &uinput_fops, | |
593 | .minor = UINPUT_MINOR, | |
594 | .name = UINPUT_NAME, | |
595 | }; | |
596 | ||
597 | static int __init uinput_init(void) | |
598 | { | |
599 | return misc_register(&uinput_misc); | |
600 | } | |
601 | ||
602 | static void __exit uinput_exit(void) | |
603 | { | |
604 | misc_deregister(&uinput_misc); | |
605 | } | |
606 | ||
607 | MODULE_AUTHOR("Aristeu Sergio Rozanski Filho"); | |
608 | MODULE_DESCRIPTION("User level driver support for input subsystem"); | |
609 | MODULE_LICENSE("GPL"); | |
610 | ||
611 | module_init(uinput_init); | |
612 | module_exit(uinput_exit); | |
613 |