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Old 09-07-2008, 08:03 PM   #1
pwabrahams
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Registered: Nov 2005
Location: Deerfield MA
Distribution: OpenSuSE, Kubuntu
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Explain the contents of hal.conf


I'm having problems with automounting USB memory sticks that appear to be related to the file /etc/dbus-1/system.d/hal.conf. I'm trying to understand the contents of that file, which has something to do with policies, but I haven't been able to find an explanation of it anywhere -- and google doesn't help. Can someone point me to such an explanation?
 
Old 09-08-2008, 01:09 PM   #2
pwabrahams
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Found part of explanation

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?
 
Old 09-08-2008, 01:10 PM   #3
Uncle_Theodore
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Registered: Dec 2007
Location: Charleston WV, USA
Distribution: Slackware 12.2, Arch Linux Amd64
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Quote:
Originally Posted by pwabrahams View Post
I'm having problems with automounting USB memory sticks that appear to be related to the file /etc/dbus-1/system.d/hal.conf. I'm trying to understand the contents of that file, which has something to do with policies, but I haven't been able to find an explanation of it anywhere -- and google doesn't help. Can someone point me to such an explanation?
The best explanation I've seen so far is here http://wiki.archlinux.org/index.php/HAL
You might also wanna look in here
http://gentoo-wiki.com/HOWTO_D-BUS,_HAL,_KDE_media:/
 
  


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