From: Lennart Poettering <lennart@amutable.com>
Date: Sun, 8 Feb 2026 20:41:21 +0000 (+0100)
Subject: udev: Introduce uaccess for remote graphical sessions (#38516)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5276ef1548d6cda3ba22270a7a153334c1815e33;p=thirdparty%2Fsystemd.git

udev: Introduce uaccess for remote graphical sessions (#38516)

When systemd is compiled with group-render-mode=0660, only the active
seat gets access to the render devices through uaccess. Remote desktop
sessions like gnome-remote-desktop would be left with no hardware
rendering, because those sessions are not associated with a seat.

We solve the issue by granting uaccess to specifically tagged devices on
session start, if the session is marked with
XDG_SESSION_EXTRA_DEVICE_ACCESS.

udev-builtin-uaccess is refactored to grant multiple users access to a
device, taking into account the device's seat and all the active
EXTRA_DEVICE_ACCESS sessions.
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5276ef1548d6cda3ba22270a7a153334c1815e33