xref/systemd/udev_sysbus_policy.conf

	udev_sysbus_policy.conf revision 5aebfbcb62614fc2bf2b1579d62e3fe272c6751a
<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>

  <!-- This configuration file specifies the required security policies
       for udev to work. -->

  <!-- Only root can own the udev service and only root can use the
       org.kernel.udev.NodeMonitor interface to send signals -->
  <policy user="root">
    <allow own="org.kernel.udev"/>

    <allow send_interface="org.kernel.udev.NodeMonitor"/>
  </policy>

  <!-- Allow anyone to listen to the org.kernel.udev.NodeMonitor interface
       for messages send from the owner of the org.kernel.udev service -->
  <policy context="default">
    <allow receive_interface="org.kernel.udev.NodeMonitor"/>
  </policy>
</busconfig>