Sharing partitions between FC4 and FC5

[Stephen Smalley]

On Sat, 2006-04-01 at 10:42 +0100, Ron Yorston wrote:
> I've installed FC5 alongside FC4.  Initially I just gave FC5 its own
> /, /var and /usr partitions but then edited /etc/fstab to add partitions
> that I want to share between FC4 and FC5:  things like /home and /opt.
> For each OS I use a different login with separate home directories.
> This avoids problems with GNOME configurations and the like.
> 
> Then I rebooted into FC5 and forced a relabel.  FC5 works fine but I'm
> now unable to login to the GNOME desktop in FC4 unless I set enforcing=0
> on boot.  When I do that the log rapidly fills up with lines like:
> 
> Apr  1 10:30:24 random kernel: inode_doinit_with_dentry:  context_to_sid(user_u:object_r:user_home_t:s0) returned 22 for dev=dm-1 ino=352500
> 
> I'll attach the log messages I get when I try to login with SELinux
> in enforcing mode.

A MLS compatibility patch went into Linux 2.6.15 and was back ported to
one of the FC4 kernel updates.  Is your FC4 kernel updated?

-- 
Stephen Smalley
National Security Agency