init script

[Daniel J. Luke]

On Mar 26, 2012, at 7:21 PM, Jeremy Lavergne wrote:
>> you need to run a script to startup and stop the service, the service insists on detaching itself so launchd will think it died, you need to perform an action on a system configuration change [restart-netchange, restart-wakeup, restart-dist-notify ...]
> 
> I think I can address all but one of those examples, that one being the classic case where forking away from launchd is unacceptable.
> 
> * a script to start and stop the service can basically create two KeepAlive:SuccessfulExit jobs

Maybe I'm misunderstanding the man page (or not creative enough), but I don't see how that would work...

> * restart-netchange is easily handled by KeepAlive:NetworkState

probably, although it's not exactly the same thing (eg, this is set for bind9 so that when new addresses appear it's restarted and can listen on them - it looks like KeepAlive:NetworkState will bring the job up when a single IPv4 or IPv6 address is assigned to an interface and not restart it if more are assigned later).

> * restart-wakeup and restart-dist-notify are not a single port
> 
> In fact from a few greps, it seems most of the advanced uses for daemondo aren't utilized at all.


since most of the macports software is ported from systems where the startup/launching stuff is significantly less featureful, that's not surprising.

It's also worth noting that the KeepAlive stuff isn't in the man page on 10.5 (I don't have a 10.6 box handy to check if it's there or if it showed up with 10.7).

I'm all for using launchd directly where it we can, though.
--
Daniel J. Luke                                                                   
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