4c7f7b1e5c
evdev_device_have_same_syspath() guards against opening the wrong device by re-resolving the fd's st_rdev through udev and comparing syspaths. On FreeBSD this works when the input device nodes are present in the caller's devfs, but not inside a jail whose devfs does not expose them: udev_device_new_from_devnum() then has nothing to resolve, and the check rejects every fd -- even fds that a seat manager (e.g. seatd) opened on the host and passed in. On FreeBSD the evdev syspath (/dev/input/eventN) is determined by the device's minor number, while the cached devnum carries both that minor and the evdev major. Comparing the full devnum against fstat(fd).st_rdev therefore verifies the same identity as the syspath comparison -- in fact slightly more strongly, since it also confirms the major -- without needing the device node to be visible to the caller. libudev-devd populates that cached devnum from the kern.evdev.input.N.devnum sysctl, which remains readable inside a jail. Guard the new path with __FreeBSD__ and move the existing udev-based lookup into the #else branch. The lookup is rewritten to return directly on each exit instead of using a shared goto label, because the FreeBSD branch returns before those locals are declared and would otherwise leave them (and the label) unused on a FreeBSD build. Linux behaviour is unchanged. Signed-off-by: Quentin Thébault <quentin.thebault@defenso.fr> Sponsored-by: Defenso Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1471> |
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| tools | ||
| udev | ||
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libinput
libinput is a library that provides a full input stack for display servers and other applications that need to handle input devices provided by the kernel.
libinput provides device detection, event handling and abstraction to minimize the amount of custom input code the user of libinput needs to provide the common set of functionality that users expect. Input event processing includes scaling touch coordinates, generating relative pointer events from touchpads, pointer acceleration, etc.
User documentation
Documentation explaining features available in libinput is available here.
This includes the FAQ and the instructions on reporting bugs.
Source code
The source code of libinput can be found at: https://gitlab.freedesktop.org/libinput/libinput
For a list of current and past releases visit: https://www.freedesktop.org/wiki/Software/libinput/
Build instructions: https://wayland.freedesktop.org/libinput/doc/latest/building.html
Reporting Bugs
Bugs can be filed on freedesktop.org GitLab: https://gitlab.freedesktop.org/libinput/libinput/issues/
Where possible, please provide the libinput record output
of the input device and/or the event sequence in question.
See https://wayland.freedesktop.org/libinput/doc/latest/reporting-bugs.html for more info.
Documentation
- Developer API documentation: https://wayland.freedesktop.org/libinput/doc/latest/development.html
- High-level documentation about libinput's features: https://wayland.freedesktop.org/libinput/doc/latest/features.html
- Build instructions: https://wayland.freedesktop.org/libinput/doc/latest/building.html
- Documentation for previous versions of libinput: https://wayland.freedesktop.org/libinput/doc/
Examples of how to use libinput are the debugging tools in the libinput repository. Developers are encouraged to look at those tools for a real-world (yet simple) example on how to use libinput.
- A commandline debugging tool: https://gitlab.freedesktop.org/libinput/libinput/tree/main/tools/libinput-debug-events.c
- A GTK application that draws cursor/touch/tablet positions: https://gitlab.freedesktop.org/libinput/libinput/tree/main/tools/libinput-debug-gui.c
License
libinput is licensed under the MIT license.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: [...]
See the COPYING file for the full license information.
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