Supporting multiple OS releases

[Rob Crittenden <rcritten redhat com>]

In the freeIPA project we have our own SELinux policy. We support RHEL 5 
up through Fedora Rawhide. With Fedora 11 we saw some problems compiling 
our SELinux module which Dan Walsh provided a patch for. I haven't tried 
this on older releases yet but I'm guessing it won't work as expected 
(some policies seem to have been renamed, such as 
corenet_non_ipsec_sendrecv() -> corenet_all_recvfrom_unlabeled()

My question is, how can we handle this in our source tree? Are we going 
to need to maintain per-release policies or does SELinux support some 
sort of versioning conditionals?

thanks

rob

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