Re: communicating with user login sessions

[Havoc Pennington <hp@redhat.com>]

On Fri, Apr 18, 2003 at 05:49:56PM -0700, David Brownell wrote: 
>  From what you say, it seems that someone could whip up a
> shell script giving us a hotplug-to-DBus gateway, by using
> that "dbus-send" program (not in dbus-0.9?) 

Yeah it's probably post-0.9; you could grab it from anoncvs though.
 
>        Header:
>            name "org.kernel.hotplug.Kernel.Event"
>            srvc ... goes to how many listeners? ...

broadcast I think. (there will be a way in dbus for clients to
indicate which broadcasts they want, so a broadcast doesn't wake up
every process on the bus - so message senders typically don't need to
worry about who gets the message)

>            sndr ... whatever kernel authenticates itself as ...

sndr is filled in by the bus itself with the connection's base service
name, which is an automatically assigned unique ID.

>        Arguments
>            uint64 - timestamp

I need to add a 64-bit type, haven't done that yet. It's in TODO
though and trivial.

>            string - argv [0]
>            string - argv [1]

Here you probably want to use array of array of byte - using the array
type instead of variable number of args means the message can map to a
function call or callback, and using array of byte instead of string
means it's binary clean (dbus string type is UTF-8).

Havoc


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