LinuxQuestions.org - Explain the contents of hal.conf

OK, I discovered that the manpage for dbus-daemon describes the <policy> element, but now I am having trouble interpreting the description. It contains the following explanation:

Quote:

The <policy> element has one of three attributes:
context="(default|mandatory)"
user="username or userid"
group="group name or gid"

Policies are applied to a connection as follows:
- all context="default" policies are applied
- all group="connection's user's group" policies are applied
in undefined order
- all user="connection's auth user" policies are applied
in undefined order
- all context="mandatory" policies are applied

I simply don't understand what the last part of this is saying. What does "all" indicate here?

The other problem I now have is that I don't know what interface makes usb automounting work. The file I have is:

Code:

<!DOCTYPE busconfig PUBLIC

 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"

 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">

<busconfig>



  <!-- This comment inserted on 9/6/08 -->

  <!-- This configuration file specifies the required security policies

      for the HAL to work. -->



  <!-- Only root or user haldaemon can own the HAL service -->

  <policy user="haldaemon">

    <allow own="org.freedesktop.Hal"/>

  </policy>

  <policy user="root">

    <allow own="org.freedesktop.Hal"/>

  </policy>



  <!-- Allow anyone to invoke methods on the Manager and Device interfaces -->

  <policy context="default">

    <allow send_interface="org.freedesktop.Hal.Manager"/>

    <allow send_interface="org.freedesktop.Hal.Device"/>

    <allow receive_interface="org.freedesktop.Hal.Manager"

          receive_sender="org.freedesktop.Hal"/>

    <allow receive_interface="org.freedesktop.Hal.Device"

          receive_sender="org.freedesktop.Hal"/>



    <allow send_interface="org.freedesktop.Hal.Device.SystemPowerManagement"/>

    <allow send_interface="org.freedesktop.Hal.Device.LaptopPanel"/>

    <allow send_interface="org.freedesktop.Hal.Device.Volume"/>

    <allow send_interface="org.freedesktop.Hal.Device.Volume.Crypto"/>

    <allow receive_interface="org.freedesktop.Hal.Device.SystemPowerManagement"

          receive_sender="org.freedesktop.Hal"/>

    <allow receive_interface="org.freedesktop.Hal.Device.LaptopPanel"

          receive_sender="org.freedesktop.Hal"/>

    <allow receive_interface="org.freedesktop.Hal.Device.Volume"

          receive_sender="org.freedesktop.Hal"/>

    <allow receive_interface="org.freedesktop.Hal.Device.Volume.Crypto"

          receive_sender="org.freedesktop.Hal"/>

  </policy>



  <!-- This will not work if pam_console support is not enabled -->

  <policy at_console="true">

    <allow send_interface="org.freedesktop.Hal.Device.SystemPowerManagement"/>

    <allow send_interface="org.freedesktop.Hal.Device.LaptopPanel"/>

    <allow send_interface="org.freedesktop.Hal.Device.Volume"/>

    <allow send_interface="org.freedesktop.Hal.Device.Volume.Crypto"/>

  </policy>



  <!-- You can change this to a more suitable user, or make per-group -->

  <policy user="*">

    <allow send_interface="org.freedesktop.Hal.Device.SystemPowerManagement"/>

    <allow send_interface="org.freedesktop.Hal.Device.VideoAdapterPM"/>

    <allow send_interface="org.freedesktop.Hal.Device.LaptopPanel"/>

    <allow send_interface="org.freedesktop.Hal.Device.Volume"/>

    <allow send_interface="org.freedesktop.Hal.Device.Volume.Crypto"/>

  </policy>



</busconfig>

What interface is supposed to support USB automounting? Is it there already?