src/sys/dev/evdev/evdev_private.h, branch release/12.3.0

MFC r344494,r344495:

2019-03-10T20:43:08Z

evdev: export event device properties through sysctl interface A big security advantage of Wayland is not allowing applications to read input devices all the time. Having /dev/input/* accessible to the user account subverts this advantage. libudev-devd was opening the evdev devices to detect their types (mouse, keyboard, touchpad, etc). This don't work if /dev/input/* is inaccessible. With the kernel exposing this information as sysctls (kern.evdev.input.*), we can work w/o /dev/input/* access, preserving the Wayland security model. Submitted by: Greg V Reviewed by: wulf, imp Differential Revision: https://reviews.freebsd.org/D18694

MFC r339823:

2018-11-17T20:18:15Z

evdev: Use console lock as evdev lock for all supported keyboard drivers. Now evdev part of keyboard drivers does not take any locks if corresponding input/eventN device node is not opened by userland consumers. Do not assert console lock inside evdev to handle the cases when keyboard driver is called from some special single-threaded context like shutdown thread. MFC r339824: evdev: disable evdev if it is invoked from KDB or panic context This allow to prevent deadlock on entering KDB if one of evdev locks is already taken by userspace process. Also this change discards all but LED console events produced by KDB as unrelated to userspace.

Change my email address to wulf@FreeBSD.org in copyright headers.

2017-07-23T20:41:58Z

Approved by: gonzo (mentor) MFC after: 2 weeks

evdev: Macroize common locking sequences

2017-07-23T20:35:26Z

Reviewed by: gonzo Approved by: gonzo (mentor) MFC after: 2 weeks

evdev: style(9), sort headers alphabetically

2017-07-23T20:32:54Z

Pointed out by: bde Reviewed by: gonzo Approved by: gonzo (mentor) MFC after: 2 weeks

Implement EVDEV_FLAG_MT_AUTOREL flag (autorelease touchpoints)

2016-10-08T17:59:53Z

Automaticaly release (send ABS_MT_TRACKING_ID = -1) MT-slots that has not been listed in current MT protocol type B report. Slot is counted as listed if corresponding ABS_MT_SLOT event has been sent regardless of other MT events. Events are sent on SYN_REPORT event. Submitted by: Vladimir Kondratiev

Allow using of driver's mutex instead internal one for evdev locking.

2016-10-08T17:58:26Z

Add new API call: evdev_register_mtx which takes lock argument that should be used instead of internal one for evdev locking. Useful for cases if evdev_push_event() is always called with driver's lock taken and reduces amount of lock aquisitions. This allows to avoid LOR between ev_open/ev_close invocations and evdev_push_event() Such LOR can happen when ev_open/ev_close methods acquire driver lock and evdev_push_event() is called with this lock taken. Submitted by: Vladimir Kondratiev

const-ify struct evdev_methods

2016-10-03T17:20:34Z

Submitted by: Vladimir Kondratiev Suggested by: hselasky

Add evdev protocol implementation

2016-09-11T18:56:38Z

evdev is a generic input event interface compatible with Linux evdev API at ioctl level. It allows using unmodified (apart from header name) input evdev drivers in Xorg, Wayland, Qt. This commit has only generic kernel API. evdev support for individual hardware drivers like ukbd, ums, atkbd, etc. will be committed later. Project was started by Jakub Klama as part of GSoC 2014. Jakub's evdev implementation was later used as a base, updated and finished by Vladimir Kondratiev. Submitted by: Vladimir Kondratiev Reviewed by: adrian, hans Differential Revision: https://reviews.freebsd.org/D6998