[launchd-dev] [Un]loading user agents on [Un]install

[Tim Schooley]

Hi all,

Is nobody able to advise on this type of scenario?

Kind regards,

Tim

On Tue, 23 Sep 2008 12:13:37 +0100, Tim Schooley wrote:
> Hi all,
> 
> So I think this is probably quite a "sane" task to have to perform:
> 
>     - Upon installing a product, detect which users are logged in, and load
> the installed LaunchAgent script for each user.
> 
>     - Upon uninstalling the product, detect which users are logged in, and
> unload the LaunchAgent script for each user.
> 
> These tasks would be performed preupgrade, postinstall, etc...
> 
> I wrote the following script to perform this task:
> 
> 
> ----
> for user in `/usr/bin/users`
> do
>     echo "Loading agent for user $user..."
>     /usr/bin/su -l $user -c "/bin/launchctl load
> -SAqua /Library/LaunchAgents/com.mycompany.myproduct.plist" EXIT_STATUS=$?
>     if [ $EXIT_STATUS != 0 ]
>     then
>         echo "failed (non-fatal, status $EXIT_STATUS)."
>     else
>         echo "Done!"
>     fi
> done
> ----
> 
> And similarly for unloading.
> 
> The script works for the user that launched the installer. But if for
> example another user is logged in using Fast-User Switching, the following
> error is printed in the installer log when preupgrade attempts to unload
> the script:
> 
> preupgrade[pid]: launchctl: Error unloading: com.mycompany.myproduct.plist
> 
> Also, on post[upgrade/install], the following error is printed when
> attempting to load the script for other users:
> 
> postupgrade[pid]: launch_msg(): socket is not connected
> 
> I've searched around for answers to these issues, but had no luck. I was
> hoping someone here might be able to point me in the right direction?
> 
> Many thanks for any help!
> 
> Kind regards,
> 
> Tim
> 
> 
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