update udev mention in hal docs

[David Zeuthen]

On Sun, 2004-05-09 at 14:58 +0200, Kay Sievers wrote:
> > Hmm, udev_dbus.dev and hal.dev are very similar at the moment, besides
> > hal.dev sends on '/org/freedesktop/Hal/Linux/Hotplug'?
> > 
> > What's the difference between the both?
> 
> Ok, I'm getting closer :)
> 

Hi, sorry for the lag.

> I see, you've solved the problem by invoking a method in hald instead of
> aquiring a service with the dev.d/ callout.
> The problem is that udev can't aquire the "org.kernel.udev" service
> with a single instance, right?
>

It can, but it requires listening to the daemon for the ServiceAcquired
message or something. DBUS also got the concept of secondary owners but
I must admit I don't fully grok that concept.

> What was your idea of the "glib/Qt fix" mentioned in your previous mail?
> 

Nope, I only realized it later.

> Hmm, maybe the right thing is, to remove the DBUS callout from udev?
> I can't think of a application listening for udev DBUS events.
> Any low level software will not want to depend on dbus and installs its
> own callout. Anything more advanced, better listens to hal messages :)
> 

This makes good sense I think.

Cheers,
David


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