linux-kernel - Re: [systemd-devel] dracut: ordering of modules

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Date:	Sat, 11 Feb 2012 19:17:25 -0500
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	Lennart Poettering <mzerqung@...inter.de>
Cc:	Roberto Sassu <roberto.sassu@...ito.it>,
	selinux@...ts.fedoraproject.org, initramfs@...r.kernel.org,
	systemd-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Harald Hoyer <harald@...hat.com>
Subject: Re: [systemd-devel] dracut: ordering of modules

On Fri, 2012-02-10 at 19:14 +0100, Lennart Poettering wrote:
> On Fri, 10.02.12 16:31, Roberto Sassu (roberto.sassu@...ito.it) wrote:
> 
> > 
> > Hi Mimi
> > 
> > i'm CCing the systemd and Fedora SELinux mailing lists.
> > 
> > Unfortunately, the SELinux policy initialization (at least
> > in Fedora 16) has been moved to systemd, so, now, loading an
> > IMA policy cannot be done in the initial ramdisk.
> > 
> > Further, the SELinux policy loading code is not in a unit file
> > but embedded in the main binary, which means that the new code for
> > loading IMA policies must be added just after that point.
> > 
> > I already wrote a patch for this. I need some time to test it
> > and will post in the systemd mailing list at the beginning of
> > the next week.

Thanks Roberto!
 
> Hmm, what is this about? You need a place to load additional security
> policies into the kernel at early boot? For SELinux that indeed takes
> place from within PID 1 now in systemd. I'd expect that other security
> technologies like AppArmor should work the same.

The IMA measurement/appraisal policy, which is described in
Documentation/ABI/testing/ima_policy, can be based on a number
of criteria.  One of these criteria are LSM subj/obj labels. The IMA
measurement/appraisal policy should be loaded as early as possible, but
only after the LSM policy has been loaded.

Mimi

> If you want to hack on this basing your work on selinux-setup.c in the
> systemd tree should be fairly easy.
> 
> Lennart

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