[launchd-dev] Launch on demand from kernel extension?

[Quinn]

At 13:28 -0700 23/6/08, Colin wrote:
>Is it possible, using launchd, to have my kernel extension launch the 
>helper daemon on demand?  If so, what is the best way to implement
>this?  I need to support OS X 10.4.11 and above.

This isn't any explicit support for this within Mac OS X.  We're 
hoping to support this more explicitly in the future, at least for 
I/O Kit KEXTs <rdar://problem/4551362> <rdar://problem/4193561>, but 
there's nothing in place right now.

One option is to have your daemon start on demand based on a 
connection to UNIX domain socket and then have your KEXT connect to 
that socket when it needs service.  I've been working on a sample 
that shows this.  I'll send you a copy via personal email.

S+E
-- 
Quinn "The Eskimo!"                    <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware