fusebox/dbus/org.chromium.FuseBoxReverseService.conf

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<!--
  Copyright 2021 The Chromium OS Authors. All rights reserved.
  Use of this source code is governed by a BSD-style license that can be
  found in the LICENSE file.
-->
<busconfig>
  <!-- FUSE user fuse-fusebox owns FuseBoxReverseService. -->
  <policy user="fuse-fusebox">
    <allow own="org.chromium.FuseBoxReverseService"/>
  </policy>

  <!-- User root can own FuseBoxReverseService for testing. -->
  <policy user="root">
    <allow own="org.chromium.FuseBoxReverseService"/>
  </policy>

  <!-- User chronos can call FuseBoxReverseService. -->
  <policy user="chronos">
    <allow send_destination="org.chromium.FuseBoxReverseService"
           send_interface="org.chromium.FuseBoxReverseService"/>
  </policy>

  <!-- User root can call FuseBoxReverseService for testing. -->
  <policy user="root">
    <allow send_destination="org.chromium.FuseBoxReverseService"
           send_interface="org.chromium.FuseBoxReverseService"/>
  </policy>

  <!-- Deny FuseBoxReverseService introspection -->
  <policy user="chronos">
    <deny send_destination="org.chromium.FuseBoxReverseService"
          send_interface="org.freedesktop.DBus.Introspectable"/>
  </policy>
</busconfig>