Re: [PATCH 4/4] SELinux: allow userspace to read policy back out of the kernel

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On Mon, 2010-06-14 at 10:57 -0400, Stephen Smalley wrote:
> On Fri, 2010-06-11 at 12:37 -0400, Eric Paris wrote:
> > There is interest in being able to see what the actual policy is that was
> > loaded into the kernel.  The patch creates a new selinuxfs file
> > /selinux/policy which can be read by userspace.  The actual policy that is
> > loaded into the kernel will be written back out to userspace.
> 
> How do you expect this to be used?  As with /selinux/load, we can't use
> coreutils utilities to manipulate it unfortunately.  Nor can we do
> things like checkpolicy -b /selinux/policy since it doesn't support
> mmap.

It doesn't seem useful if I can't do things like:
seinfo /selinux/policy
cmp /selinux/policy /etc/selinux/$SELINUXTYPE/policy/policy.24
sediff /selinux/policy \; /etc/selinux/$SELINUXTYPE/poilcy/policy.24

-- 
Stephen Smalley
National Security Agency


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