Accessing Session Bus through the superuser

[Marcel Holtmann]

Hi Colin,

>> That's not a good practice. Instead, let the user connect to the  
>> system
>> bus and receive the notifications there. Do not push messages into  
>> the
>> session bus.
>
> Right.  Now the fact that a lot of people want the functionality to
> broadcast notifications to the logged in session makes me think we
> should probably add it to the system.  But that's not a topic for this
> list.

the BlueZ daemon uses the concept of an agent. So in running within  
user context it registers an object path and then calls a register  
function on the system daemon to tell it where the user agent has its  
path. That is enough to integrate a nice 1:1 communication via a  
system daemon and a user space UI for input etc.

Check the BlueZ API documentation. It is one of the really nice  
advanced things you can do with D-Bus. Including the way of monitoring  
if an agent dies unexpectedly.

Regards

Marcel