Force user logout?

[Kurt Granroth]

On Feb 19, 2006, at 7:22 AM, Alan Dayley wrote:
>> If you want the processes to actually perform a logout procedure and
>> your son is running KDE, then try this:
>>
>> # dcop --all-sessions --all-users ksmserver ksmserver logout 0 2 0
>
> OK, this appears to have worked well except that it resulted in a
> shutdown of the the system.  This is not bad, I was just originally
> looking for a way to logout but not shutdown.  I'll go investigate  
> dcop
> commands.

Oops, I thought that that was your intent.  You said, and I quote: "I  
want to force the user to logout so the machine can cleanly  
shutdown."  My bad for not giving  a full description of what is  
going to happen. :-)

Basically, there are three options to logout.  The first is  
effectively a boolean like 'ask_for_confirmation' where 0 means don't  
ask and 1 (or any positive, actually) means to ask.  The second  
option is based off of KApplication::ShutdownType.  0 = logout, 1 =  
reboot, 2 = shutdown.  I don't remember exactly what the third  
parameter is for.  I've never used it.  I think it has to do with how  
much interaction you allow the user during the logout process... but  
I could be wrong.

So, some possibilities:

ksmserver logout 1 0 0  => start a logout but allow the user to  
cancel it ("Are you sure?")
ksmserver logout 0 0 0 => logout immediately
ksmserver logout 1 1 0 => start a reboot but allow the user to cancel
ksmserver logout 0 2 0 => shutdown immediately

The latter two require that the KDE session has started via KDM (or  
possibly gdm).  If it's started by 'startx', then only the logout  
option works.

Kurt