2005-04-16 16:20:36 -06:00
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/*
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* User level driver support for input subsystem
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*
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* Heavily based on evdev.c by Vojtech Pavlik
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
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*
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* Changes/Revisions:
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2006-07-18 23:41:09 -06:00
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* 0.3 09/04/2006 (Anssi Hannula <anssi.hannula@gmail.com>)
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* - updated ff support for the changes in kernel interface
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* - added MODULE_VERSION
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2005-04-16 16:20:36 -06:00
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* 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>)
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* - added force feedback support
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* - added UI_SET_PHYS
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* 0.1 20/06/2002
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* - first public version
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*/
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#include <linux/poll.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/smp_lock.h>
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#include <linux/fs.h>
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#include <linux/miscdevice.h>
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#include <linux/uinput.h>
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2008-10-16 20:31:42 -06:00
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#include "../input-compat.h"
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2005-04-16 16:20:36 -06:00
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static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
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{
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2007-04-11 23:34:33 -06:00
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struct uinput_device *udev = input_get_drvdata(dev);
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2005-04-16 16:20:36 -06:00
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udev->buff[udev->head].type = type;
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udev->buff[udev->head].code = code;
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udev->buff[udev->head].value = value;
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do_gettimeofday(&udev->buff[udev->head].time);
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udev->head = (udev->head + 1) % UINPUT_BUFFER_SIZE;
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wake_up_interruptible(&udev->waitq);
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return 0;
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}
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2005-06-29 23:48:14 -06:00
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static int uinput_request_alloc_id(struct uinput_device *udev, struct uinput_request *request)
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2005-04-16 16:20:36 -06:00
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{
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/* Atomically allocate an ID for the given request. Returns 0 on success. */
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int id;
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2005-06-29 23:47:50 -06:00
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int err = -1;
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2005-04-16 16:20:36 -06:00
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2005-06-29 23:48:14 -06:00
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spin_lock(&udev->requests_lock);
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2005-06-29 23:47:50 -06:00
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for (id = 0; id < UINPUT_NUM_REQUESTS; id++)
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2005-04-16 16:20:36 -06:00
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if (!udev->requests[id]) {
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request->id = id;
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2005-06-29 23:48:14 -06:00
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udev->requests[id] = request;
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2005-06-29 23:47:50 -06:00
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err = 0;
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break;
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2005-04-16 16:20:36 -06:00
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}
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2005-06-29 23:47:50 -06:00
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2005-06-29 23:48:14 -06:00
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spin_unlock(&udev->requests_lock);
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2005-06-29 23:47:50 -06:00
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return err;
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2005-04-16 16:20:36 -06:00
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}
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static struct uinput_request* uinput_request_find(struct uinput_device *udev, int id)
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{
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/* Find an input request, by ID. Returns NULL if the ID isn't valid. */
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if (id >= UINPUT_NUM_REQUESTS || id < 0)
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return NULL;
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2008-10-16 20:31:42 -06:00
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2005-04-16 16:20:36 -06:00
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return udev->requests[id];
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}
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2005-06-29 23:48:14 -06:00
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static inline int uinput_request_reserve_slot(struct uinput_device *udev, struct uinput_request *request)
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2005-04-16 16:20:36 -06:00
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{
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2005-06-29 23:48:14 -06:00
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/* Allocate slot. If none are available right away, wait. */
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return wait_event_interruptible(udev->requests_waitq,
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!uinput_request_alloc_id(udev, request));
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}
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2005-04-16 16:20:36 -06:00
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2005-06-29 23:48:14 -06:00
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static void uinput_request_done(struct uinput_device *udev, struct uinput_request *request)
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{
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/* Mark slot as available */
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udev->requests[request->id] = NULL;
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2005-11-19 22:51:43 -07:00
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wake_up(&udev->requests_waitq);
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2005-10-17 17:43:32 -06:00
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complete(&request->done);
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2005-04-16 16:20:36 -06:00
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}
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2005-06-29 23:48:14 -06:00
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static int uinput_request_submit(struct input_dev *dev, struct uinput_request *request)
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2005-04-16 16:20:36 -06:00
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{
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/* Tell our userspace app about this new request by queueing an input event */
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uinput_dev_event(dev, EV_UINPUT, request->code, request->id);
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/* Wait for the request to complete */
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2005-11-19 22:51:43 -07:00
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wait_for_completion(&request->done);
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return request->retval;
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2005-04-16 16:20:36 -06:00
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}
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2006-07-18 23:41:09 -06:00
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static void uinput_dev_set_gain(struct input_dev *dev, u16 gain)
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{
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uinput_dev_event(dev, EV_FF, FF_GAIN, gain);
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}
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static void uinput_dev_set_autocenter(struct input_dev *dev, u16 magnitude)
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{
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uinput_dev_event(dev, EV_FF, FF_AUTOCENTER, magnitude);
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}
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static int uinput_dev_playback(struct input_dev *dev, int effect_id, int value)
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{
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return uinput_dev_event(dev, EV_FF, effect_id, value);
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}
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static int uinput_dev_upload_effect(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old)
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2005-04-16 16:20:36 -06:00
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{
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struct uinput_request request;
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2005-06-29 23:48:14 -06:00
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int retval;
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2005-04-16 16:20:36 -06:00
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2008-10-16 20:31:42 -06:00
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/*
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* uinput driver does not currently support periodic effects with
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* custom waveform since it does not have a way to pass buffer of
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* samples (custom_data) to userspace. If ever there is a device
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* supporting custom waveforms we would need to define an additional
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* ioctl (UI_UPLOAD_SAMPLES) but for now we just bail out.
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*/
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if (effect->type == FF_PERIODIC &&
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effect->u.periodic.waveform == FF_CUSTOM)
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return -EINVAL;
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2005-06-29 23:48:14 -06:00
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request.id = -1;
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init_completion(&request.done);
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request.code = UI_FF_UPLOAD;
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2006-07-18 23:41:09 -06:00
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request.u.upload.effect = effect;
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request.u.upload.old = old;
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2005-06-29 23:48:14 -06:00
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2007-04-11 23:34:33 -06:00
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retval = uinput_request_reserve_slot(input_get_drvdata(dev), &request);
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2005-06-29 23:48:14 -06:00
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if (!retval)
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retval = uinput_request_submit(dev, &request);
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return retval;
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2005-04-16 16:20:36 -06:00
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}
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static int uinput_dev_erase_effect(struct input_dev *dev, int effect_id)
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{
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struct uinput_request request;
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2005-06-29 23:48:14 -06:00
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int retval;
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2005-04-16 16:20:36 -06:00
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if (!test_bit(EV_FF, dev->evbit))
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return -ENOSYS;
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2005-06-29 23:48:14 -06:00
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request.id = -1;
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init_completion(&request.done);
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request.code = UI_FF_ERASE;
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2005-04-16 16:20:36 -06:00
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request.u.effect_id = effect_id;
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2005-06-29 23:48:14 -06:00
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2007-04-11 23:34:33 -06:00
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retval = uinput_request_reserve_slot(input_get_drvdata(dev), &request);
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2005-06-29 23:48:14 -06:00
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if (!retval)
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retval = uinput_request_submit(dev, &request);
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return retval;
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2005-04-16 16:20:36 -06:00
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}
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2005-11-19 22:51:22 -07:00
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static void uinput_destroy_device(struct uinput_device *udev)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-19 22:51:22 -07:00
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const char *name, *phys;
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if (udev->dev) {
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name = udev->dev->name;
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phys = udev->dev->phys;
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if (udev->state == UIST_CREATED)
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input_unregister_device(udev->dev);
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else
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input_free_device(udev->dev);
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kfree(name);
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kfree(phys);
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udev->dev = NULL;
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2005-04-16 16:20:36 -06:00
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}
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2005-11-19 22:51:22 -07:00
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udev->state = UIST_NEW_DEVICE;
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2005-04-16 16:20:36 -06:00
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}
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2005-11-19 22:51:22 -07:00
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static int uinput_create_device(struct uinput_device *udev)
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2005-04-16 16:20:36 -06:00
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{
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2006-07-18 23:41:09 -06:00
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struct input_dev *dev = udev->dev;
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2005-11-19 22:51:22 -07:00
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int error;
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if (udev->state != UIST_SETUP_COMPLETE) {
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printk(KERN_DEBUG "%s: write device info first\n", UINPUT_NAME);
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2005-04-16 16:20:36 -06:00
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return -EINVAL;
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}
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2006-07-18 23:41:09 -06:00
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if (udev->ff_effects_max) {
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error = input_ff_create(dev, udev->ff_effects_max);
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if (error)
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goto fail1;
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dev->ff->upload = uinput_dev_upload_effect;
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dev->ff->erase = uinput_dev_erase_effect;
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dev->ff->playback = uinput_dev_playback;
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dev->ff->set_gain = uinput_dev_set_gain;
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dev->ff->set_autocenter = uinput_dev_set_autocenter;
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2005-11-19 22:51:22 -07:00
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}
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2005-04-16 16:20:36 -06:00
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2006-07-18 23:41:09 -06:00
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error = input_register_device(udev->dev);
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if (error)
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goto fail2;
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2005-11-19 22:51:22 -07:00
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udev->state = UIST_CREATED;
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2005-04-16 16:20:36 -06:00
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return 0;
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2006-07-18 23:41:09 -06:00
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fail2: input_ff_destroy(dev);
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fail1: uinput_destroy_device(udev);
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return error;
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2005-04-16 16:20:36 -06:00
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}
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static int uinput_open(struct inode *inode, struct file *file)
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{
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2005-11-19 22:51:22 -07:00
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struct uinput_device *newdev;
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2005-04-16 16:20:36 -06:00
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2005-11-19 22:51:22 -07:00
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newdev = kzalloc(sizeof(struct uinput_device), GFP_KERNEL);
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2005-04-16 16:20:36 -06:00
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if (!newdev)
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2005-11-19 22:51:22 -07:00
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return -ENOMEM;
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2008-05-20 11:16:53 -06:00
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lock_kernel();
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2006-02-18 22:22:36 -07:00
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mutex_init(&newdev->mutex);
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2005-06-29 23:48:14 -06:00
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spin_lock_init(&newdev->requests_lock);
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2005-04-16 16:20:36 -06:00
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init_waitqueue_head(&newdev->requests_waitq);
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2005-11-19 22:51:22 -07:00
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init_waitqueue_head(&newdev->waitq);
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newdev->state = UIST_NEW_DEVICE;
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2005-04-16 16:20:36 -06:00
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file->private_data = newdev;
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2008-05-20 11:16:53 -06:00
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unlock_kernel();
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2005-04-16 16:20:36 -06:00
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return 0;
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}
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static int uinput_validate_absbits(struct input_dev *dev)
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{
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unsigned int cnt;
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int retval = 0;
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for (cnt = 0; cnt < ABS_MAX + 1; cnt++) {
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if (!test_bit(cnt, dev->absbit))
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continue;
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if ((dev->absmax[cnt] <= dev->absmin[cnt])) {
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printk(KERN_DEBUG
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"%s: invalid abs[%02x] min:%d max:%d\n",
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UINPUT_NAME, cnt,
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dev->absmin[cnt], dev->absmax[cnt]);
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retval = -EINVAL;
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break;
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}
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if (dev->absflat[cnt] > (dev->absmax[cnt] - dev->absmin[cnt])) {
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printk(KERN_DEBUG
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"%s: absflat[%02x] out of range: %d "
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"(min:%d/max:%d)\n",
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UINPUT_NAME, cnt, dev->absflat[cnt],
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dev->absmin[cnt], dev->absmax[cnt]);
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retval = -EINVAL;
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break;
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}
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}
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return retval;
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}
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|
2005-11-19 22:51:22 -07:00
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static int uinput_allocate_device(struct uinput_device *udev)
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{
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udev->dev = input_allocate_device();
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if (!udev->dev)
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return -ENOMEM;
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udev->dev->event = uinput_dev_event;
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2007-04-11 23:34:33 -06:00
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input_set_drvdata(udev->dev, udev);
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2005-11-19 22:51:22 -07:00
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return 0;
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}
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static int uinput_setup_device(struct uinput_device *udev, const char __user *buffer, size_t count)
|
2005-04-16 16:20:36 -06:00
|
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{
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struct uinput_user_dev *user_dev;
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struct input_dev *dev;
|
2005-06-29 23:50:38 -06:00
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char *name;
|
2005-06-29 23:47:50 -06:00
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int size;
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int retval;
|
2005-04-16 16:20:36 -06:00
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2005-11-19 22:51:22 -07:00
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if (count != sizeof(struct uinput_user_dev))
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return -EINVAL;
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if (!udev->dev) {
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retval = uinput_allocate_device(udev);
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if (retval)
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return retval;
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}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
dev = udev->dev;
|
|
|
|
|
2005-06-29 23:47:50 -06:00
|
|
|
user_dev = kmalloc(sizeof(struct uinput_user_dev), GFP_KERNEL);
|
2005-11-19 22:51:22 -07:00
|
|
|
if (!user_dev)
|
|
|
|
return -ENOMEM;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if (copy_from_user(user_dev, buffer, sizeof(struct uinput_user_dev))) {
|
|
|
|
retval = -EFAULT;
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
2006-07-18 23:41:09 -06:00
|
|
|
udev->ff_effects_max = user_dev->ff_effects_max;
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1;
|
2005-11-19 22:51:22 -07:00
|
|
|
if (!size) {
|
|
|
|
retval = -EINVAL;
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
kfree(dev->name);
|
2005-06-29 23:50:38 -06:00
|
|
|
dev->name = name = kmalloc(size, GFP_KERNEL);
|
|
|
|
if (!name) {
|
2005-04-16 16:20:36 -06:00
|
|
|
retval = -ENOMEM;
|
|
|
|
goto exit;
|
|
|
|
}
|
2005-06-29 23:50:38 -06:00
|
|
|
strlcpy(name, user_dev->name, size);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
dev->id.bustype = user_dev->id.bustype;
|
|
|
|
dev->id.vendor = user_dev->id.vendor;
|
|
|
|
dev->id.product = user_dev->id.product;
|
|
|
|
dev->id.version = user_dev->id.version;
|
|
|
|
|
|
|
|
size = sizeof(int) * (ABS_MAX + 1);
|
|
|
|
memcpy(dev->absmax, user_dev->absmax, size);
|
|
|
|
memcpy(dev->absmin, user_dev->absmin, size);
|
|
|
|
memcpy(dev->absfuzz, user_dev->absfuzz, size);
|
|
|
|
memcpy(dev->absflat, user_dev->absflat, size);
|
|
|
|
|
|
|
|
/* check if absmin/absmax/absfuzz/absflat are filled as
|
|
|
|
* told in Documentation/input/input-programming.txt */
|
|
|
|
if (test_bit(EV_ABS, dev->evbit)) {
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_validate_absbits(dev);
|
|
|
|
if (retval < 0)
|
|
|
|
goto exit;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
udev->state = UIST_SETUP_COMPLETE;
|
|
|
|
retval = count;
|
|
|
|
|
|
|
|
exit:
|
2005-04-16 16:20:36 -06:00
|
|
|
kfree(user_dev);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
static inline ssize_t uinput_inject_event(struct uinput_device *udev, const char __user *buffer, size_t count)
|
|
|
|
{
|
|
|
|
struct input_event ev;
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
if (count < input_event_size())
|
2005-11-19 22:51:22 -07:00
|
|
|
return -EINVAL;
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
if (input_event_from_user(buffer, &ev))
|
2005-11-19 22:51:22 -07:00
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
input_event(udev->dev, ev.type, ev.code, ev.value);
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
return input_event_size();
|
2005-11-19 22:51:22 -07:00
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
|
|
|
|
{
|
|
|
|
struct uinput_device *udev = file->private_data;
|
2005-11-19 22:51:22 -07:00
|
|
|
int retval;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-18 22:22:36 -07:00
|
|
|
retval = mutex_lock_interruptible(&udev->mutex);
|
2005-11-19 22:51:22 -07:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
retval = udev->state == UIST_CREATED ?
|
|
|
|
uinput_inject_event(udev, buffer, count) :
|
|
|
|
uinput_setup_device(udev, buffer, count);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-18 22:22:36 -07:00
|
|
|
mutex_unlock(&udev->mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
return retval;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
|
|
|
|
{
|
|
|
|
struct uinput_device *udev = file->private_data;
|
|
|
|
int retval = 0;
|
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
if (udev->state != UIST_CREATED)
|
2005-04-16 16:20:36 -06:00
|
|
|
return -ENODEV;
|
|
|
|
|
2005-06-29 23:47:50 -06:00
|
|
|
if (udev->head == udev->tail && (file->f_flags & O_NONBLOCK))
|
2005-04-16 16:20:36 -06:00
|
|
|
return -EAGAIN;
|
|
|
|
|
|
|
|
retval = wait_event_interruptible(udev->waitq,
|
2005-11-19 22:51:22 -07:00
|
|
|
udev->head != udev->tail || udev->state != UIST_CREATED);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
2006-02-18 22:22:36 -07:00
|
|
|
retval = mutex_lock_interruptible(&udev->mutex);
|
2005-11-19 22:51:22 -07:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
if (udev->state != UIST_CREATED) {
|
|
|
|
retval = -ENODEV;
|
|
|
|
goto out;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
while (udev->head != udev->tail && retval + input_event_size() <= count) {
|
|
|
|
if (input_event_to_user(buffer + retval, &udev->buff[udev->tail])) {
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = -EFAULT;
|
|
|
|
goto out;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
udev->tail = (udev->tail + 1) % UINPUT_BUFFER_SIZE;
|
2008-10-16 20:31:42 -06:00
|
|
|
retval += input_event_size();
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
out:
|
2006-02-18 22:22:36 -07:00
|
|
|
mutex_unlock(&udev->mutex);
|
2005-11-19 22:51:22 -07:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned int uinput_poll(struct file *file, poll_table *wait)
|
|
|
|
{
|
|
|
|
struct uinput_device *udev = file->private_data;
|
|
|
|
|
|
|
|
poll_wait(file, &udev->waitq, wait);
|
|
|
|
|
|
|
|
if (udev->head != udev->tail)
|
|
|
|
return POLLIN | POLLRDNORM;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
static int uinput_release(struct inode *inode, struct file *file)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-19 22:51:22 -07:00
|
|
|
struct uinput_device *udev = file->private_data;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
uinput_destroy_device(udev);
|
2005-04-16 16:20:36 -06:00
|
|
|
kfree(udev);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
struct uinput_ff_upload_compat {
|
|
|
|
int request_id;
|
|
|
|
int retval;
|
|
|
|
struct ff_effect_compat effect;
|
|
|
|
struct ff_effect_compat old;
|
|
|
|
};
|
|
|
|
|
|
|
|
static int uinput_ff_upload_to_user(char __user *buffer,
|
|
|
|
const struct uinput_ff_upload *ff_up)
|
|
|
|
{
|
|
|
|
if (INPUT_COMPAT_TEST) {
|
|
|
|
struct uinput_ff_upload_compat ff_up_compat;
|
|
|
|
|
|
|
|
ff_up_compat.request_id = ff_up->request_id;
|
|
|
|
ff_up_compat.retval = ff_up->retval;
|
|
|
|
/*
|
|
|
|
* It so happens that the pointer that gives us the trouble
|
|
|
|
* is the last field in the structure. Since we don't support
|
|
|
|
* custom waveforms in uinput anyway we can just copy the whole
|
|
|
|
* thing (to the compat size) and ignore the pointer.
|
|
|
|
*/
|
|
|
|
memcpy(&ff_up_compat.effect, &ff_up->effect,
|
|
|
|
sizeof(struct ff_effect_compat));
|
|
|
|
memcpy(&ff_up_compat.old, &ff_up->old,
|
|
|
|
sizeof(struct ff_effect_compat));
|
|
|
|
|
|
|
|
if (copy_to_user(buffer, &ff_up_compat,
|
|
|
|
sizeof(struct uinput_ff_upload_compat)))
|
|
|
|
return -EFAULT;
|
|
|
|
} else {
|
|
|
|
if (copy_to_user(buffer, ff_up,
|
|
|
|
sizeof(struct uinput_ff_upload)))
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int uinput_ff_upload_from_user(const char __user *buffer,
|
|
|
|
struct uinput_ff_upload *ff_up)
|
|
|
|
{
|
|
|
|
if (INPUT_COMPAT_TEST) {
|
|
|
|
struct uinput_ff_upload_compat ff_up_compat;
|
|
|
|
|
|
|
|
if (copy_from_user(&ff_up_compat, buffer,
|
|
|
|
sizeof(struct uinput_ff_upload_compat)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
ff_up->request_id = ff_up_compat.request_id;
|
|
|
|
ff_up->retval = ff_up_compat.retval;
|
|
|
|
memcpy(&ff_up->effect, &ff_up_compat.effect,
|
|
|
|
sizeof(struct ff_effect_compat));
|
|
|
|
memcpy(&ff_up->old, &ff_up_compat.old,
|
|
|
|
sizeof(struct ff_effect_compat));
|
|
|
|
|
|
|
|
} else {
|
|
|
|
if (copy_from_user(ff_up, buffer,
|
|
|
|
sizeof(struct uinput_ff_upload)))
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
static int uinput_ff_upload_to_user(char __user *buffer,
|
|
|
|
const struct uinput_ff_upload *ff_up)
|
|
|
|
{
|
|
|
|
if (copy_to_user(buffer, ff_up, sizeof(struct uinput_ff_upload)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int uinput_ff_upload_from_user(const char __user *buffer,
|
|
|
|
struct uinput_ff_upload *ff_up)
|
|
|
|
{
|
|
|
|
if (copy_from_user(ff_up, buffer, sizeof(struct uinput_ff_upload)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2005-11-19 22:51:22 -07:00
|
|
|
#define uinput_set_bit(_arg, _bit, _max) \
|
|
|
|
({ \
|
|
|
|
int __ret = 0; \
|
|
|
|
if (udev->state == UIST_CREATED) \
|
|
|
|
__ret = -EINVAL; \
|
|
|
|
else if ((_arg) > (_max)) \
|
|
|
|
__ret = -EINVAL; \
|
|
|
|
else set_bit((_arg), udev->dev->_bit); \
|
|
|
|
__ret; \
|
|
|
|
})
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
static long uinput_ioctl_handler(struct file *file, unsigned int cmd,
|
|
|
|
unsigned long arg, void __user *p)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-19 22:51:22 -07:00
|
|
|
int retval;
|
2008-10-16 20:31:42 -06:00
|
|
|
struct uinput_device *udev = file->private_data;
|
2005-04-16 16:20:36 -06:00
|
|
|
struct uinput_ff_upload ff_up;
|
|
|
|
struct uinput_ff_erase ff_erase;
|
|
|
|
struct uinput_request *req;
|
|
|
|
int length;
|
2005-06-29 23:50:38 -06:00
|
|
|
char *phys;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-02-18 22:22:36 -07:00
|
|
|
retval = mutex_lock_interruptible(&udev->mutex);
|
2005-11-19 22:51:22 -07:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
if (!udev->dev) {
|
|
|
|
retval = uinput_allocate_device(udev);
|
|
|
|
if (retval)
|
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case UI_DEV_CREATE:
|
|
|
|
retval = uinput_create_device(udev);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_DEV_DESTROY:
|
2005-11-19 22:51:22 -07:00
|
|
|
uinput_destroy_device(udev);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_EVBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, evbit, EV_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_KEYBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, keybit, KEY_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_RELBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, relbit, REL_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_ABSBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, absbit, ABS_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_MSCBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, mscbit, MSC_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_LEDBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, ledbit, LED_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_SNDBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, sndbit, SND_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_SET_FFBIT:
|
2005-11-19 22:51:22 -07:00
|
|
|
retval = uinput_set_bit(arg, ffbit, FF_MAX);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
2005-11-19 22:51:33 -07:00
|
|
|
case UI_SET_SWBIT:
|
|
|
|
retval = uinput_set_bit(arg, swbit, SW_MAX);
|
|
|
|
break;
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
case UI_SET_PHYS:
|
2005-11-19 22:51:22 -07:00
|
|
|
if (udev->state == UIST_CREATED) {
|
|
|
|
retval = -EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
length = strnlen_user(p, 1024);
|
|
|
|
if (length <= 0) {
|
|
|
|
retval = -EFAULT;
|
|
|
|
break;
|
|
|
|
}
|
2005-06-29 23:50:38 -06:00
|
|
|
kfree(udev->dev->phys);
|
|
|
|
udev->dev->phys = phys = kmalloc(length, GFP_KERNEL);
|
|
|
|
if (!phys) {
|
2005-04-16 16:20:36 -06:00
|
|
|
retval = -ENOMEM;
|
|
|
|
break;
|
|
|
|
}
|
2005-06-29 23:50:38 -06:00
|
|
|
if (copy_from_user(phys, p, length)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
udev->dev->phys = NULL;
|
2005-06-29 23:50:38 -06:00
|
|
|
kfree(phys);
|
|
|
|
retval = -EFAULT;
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
}
|
2005-06-29 23:50:38 -06:00
|
|
|
phys[length - 1] = '\0';
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_BEGIN_FF_UPLOAD:
|
2008-10-16 20:31:42 -06:00
|
|
|
retval = uinput_ff_upload_from_user(p, &ff_up);
|
|
|
|
if (retval)
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
req = uinput_request_find(udev, ff_up.request_id);
|
2008-10-16 20:31:42 -06:00
|
|
|
if (!req || req->code != UI_FF_UPLOAD || !req->u.upload.effect) {
|
2005-04-16 16:20:36 -06:00
|
|
|
retval = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
ff_up.retval = 0;
|
2008-10-16 20:31:42 -06:00
|
|
|
ff_up.effect = *req->u.upload.effect;
|
2006-07-18 23:41:09 -06:00
|
|
|
if (req->u.upload.old)
|
2008-10-16 20:31:42 -06:00
|
|
|
ff_up.old = *req->u.upload.old;
|
2006-07-18 23:41:09 -06:00
|
|
|
else
|
|
|
|
memset(&ff_up.old, 0, sizeof(struct ff_effect));
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
retval = uinput_ff_upload_to_user(p, &ff_up);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_BEGIN_FF_ERASE:
|
|
|
|
if (copy_from_user(&ff_erase, p, sizeof(ff_erase))) {
|
|
|
|
retval = -EFAULT;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
req = uinput_request_find(udev, ff_erase.request_id);
|
2008-10-16 20:31:42 -06:00
|
|
|
if (!req || req->code != UI_FF_ERASE) {
|
2005-04-16 16:20:36 -06:00
|
|
|
retval = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
ff_erase.retval = 0;
|
|
|
|
ff_erase.effect_id = req->u.effect_id;
|
|
|
|
if (copy_to_user(p, &ff_erase, sizeof(ff_erase))) {
|
|
|
|
retval = -EFAULT;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_END_FF_UPLOAD:
|
2008-10-16 20:31:42 -06:00
|
|
|
retval = uinput_ff_upload_from_user(p, &ff_up);
|
|
|
|
if (retval)
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
req = uinput_request_find(udev, ff_up.request_id);
|
2008-10-16 20:31:42 -06:00
|
|
|
if (!req || req->code != UI_FF_UPLOAD ||
|
|
|
|
!req->u.upload.effect) {
|
2005-04-16 16:20:36 -06:00
|
|
|
retval = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
req->retval = ff_up.retval;
|
2005-06-29 23:48:14 -06:00
|
|
|
uinput_request_done(udev, req);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case UI_END_FF_ERASE:
|
|
|
|
if (copy_from_user(&ff_erase, p, sizeof(ff_erase))) {
|
|
|
|
retval = -EFAULT;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
req = uinput_request_find(udev, ff_erase.request_id);
|
2008-10-16 20:31:42 -06:00
|
|
|
if (!req || req->code != UI_FF_ERASE) {
|
2005-04-16 16:20:36 -06:00
|
|
|
retval = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
2008-10-16 20:31:42 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
req->retval = ff_erase.retval;
|
2005-06-29 23:48:14 -06:00
|
|
|
uinput_request_done(udev, req);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
retval = -EINVAL;
|
|
|
|
}
|
2005-11-19 22:51:22 -07:00
|
|
|
|
|
|
|
out:
|
2006-02-18 22:22:36 -07:00
|
|
|
mutex_unlock(&udev->mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2008-10-16 20:31:42 -06:00
|
|
|
static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
|
|
|
return uinput_ioctl_handler(file, cmd, arg, (void __user *)arg);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
static long uinput_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
|
|
|
return uinput_ioctl_handler(file, cmd, arg, compat_ptr(arg));
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2007-02-12 01:55:32 -07:00
|
|
|
static const struct file_operations uinput_fops = {
|
2005-11-19 22:51:22 -07:00
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.open = uinput_open,
|
|
|
|
.release = uinput_release,
|
|
|
|
.read = uinput_read,
|
|
|
|
.write = uinput_write,
|
|
|
|
.poll = uinput_poll,
|
|
|
|
.unlocked_ioctl = uinput_ioctl,
|
2008-10-16 20:31:42 -06:00
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
.compat_ioctl = uinput_compat_ioctl,
|
|
|
|
#endif
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
static struct miscdevice uinput_misc = {
|
2005-11-19 22:51:22 -07:00
|
|
|
.fops = &uinput_fops,
|
|
|
|
.minor = UINPUT_MINOR,
|
|
|
|
.name = UINPUT_NAME,
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
static int __init uinput_init(void)
|
|
|
|
{
|
|
|
|
return misc_register(&uinput_misc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit uinput_exit(void)
|
|
|
|
{
|
|
|
|
misc_deregister(&uinput_misc);
|
|
|
|
}
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Aristeu Sergio Rozanski Filho");
|
|
|
|
MODULE_DESCRIPTION("User level driver support for input subsystem");
|
|
|
|
MODULE_LICENSE("GPL");
|
2006-07-18 23:41:09 -06:00
|
|
|
MODULE_VERSION("0.3");
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
module_init(uinput_init);
|
|
|
|
module_exit(uinput_exit);
|
|
|
|
|