[CentOS] custom SELinux?

I need to upgrade a server running an old Fedora version. The new OS 
will be CentOS 5 64bit.

I want to put /var/lib/cyrus and /var/spool/cyrus (all the variable 
files for the Cyrus IMAP server) on the same partition like /home - this 
way, all the "user-related stuff", home pages and email, stays on one 
partition.

The problem is SELinux. On Fedora, I had to customize the SELinux 
attributes so that SELinux would grant the Cyrus processes access to the 
Cyrus stuff in /home
But, after doing a relabel of the whole disk, the custom attributes were 
wiped out.
I want to avoid that on CentOS 5.

So, I need to tell SELinux "hey, this stuff under 
/home/foobar/spool/cyrus is just like /var/spool/cyrus, don't relabel it 
to something else". How do I achieve that?

-- 
Florin Andrei

http://florin.myip.org/