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e3480a61fc
uinput is used in the xorg-integration-tests suite and in the wayland test suite. These automated tests suites create many virtual input devices and then hook something to read these newly created devices. Currently, uinput does not provide the created input device, which means that we rely on an heuristic to guess which input node was created. The problem is that is heuristic is subjected to races between different uinput devices or even with physical devices. Having a way to retrieve the sysfs path allows us to find without any doubts the event node. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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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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* 0.4 01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>)
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* - add UI_GET_SYSNAME ioctl
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* 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
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* - update ff support for the changes in kernel interface
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* - add UINPUT_VERSION
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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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#ifndef __UINPUT_H_
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#define __UINPUT_H_
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#include <uapi/linux/uinput.h>
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#define UINPUT_NAME "uinput"
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#define UINPUT_BUFFER_SIZE 16
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#define UINPUT_NUM_REQUESTS 16
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enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
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struct uinput_request {
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unsigned int id;
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unsigned int code; /* UI_FF_UPLOAD, UI_FF_ERASE */
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int retval;
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struct completion done;
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union {
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unsigned int effect_id;
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struct {
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struct ff_effect *effect;
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struct ff_effect *old;
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} upload;
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} u;
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};
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struct uinput_device {
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struct input_dev *dev;
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struct mutex mutex;
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enum uinput_state state;
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wait_queue_head_t waitq;
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unsigned char ready;
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unsigned char head;
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unsigned char tail;
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struct input_event buff[UINPUT_BUFFER_SIZE];
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unsigned int ff_effects_max;
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struct uinput_request *requests[UINPUT_NUM_REQUESTS];
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wait_queue_head_t requests_waitq;
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spinlock_t requests_lock;
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};
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#endif /* __UINPUT_H_ */
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