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SELinux on NFS.

From: Daniel J Walsh <dwalsh_at_redhat.com>
Date: Mon, 03 Nov 2008 17:15:42 -0500


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We really want to get SELinux labeled files on NFS into Fedora 11. But it seems to be getting bogged down in the standards process. I think we need to simplify.

All Fedora needs for SELinux on NFS is the ability to store and enforce file labels from the client side on the server. This has to work with full Unix authentication model (Trusted Host) as well as the full kerberos authentication model.

I think we can treat the server side as a dumb server. NFS servers tends to fully trust the client to do the "right thing" on disk partitions that the server shares. Our first version of SELinux NFS should do the same. Getting bogged down in the server worrying about which process on the client created a file/file_label is not something that is necessary for the first version. And probably not something that is required for the vast majority of situations for the next few years. The servers will/should not have a requirement to run SELinux.

But labelled NFS on the client side has potential great benefits for us.  Especially with work in svirt where we want to be able to share virtual image files via NFS and have them isolated by SELinux.

How close are we to getting this functionality working and do you think the upstream kernel would accept your changes to allow this?

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Received on Mon 3 Nov 2008 - 17:15:48 EST
 

Date Posted: Jan 15, 2009 | Last Modified: Jan 15, 2009 | Last Reviewed: Jan 15, 2009

 
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