Livecd-creator is disabling selinux

Mon Jan 13 20:05:14 UTC 2014

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On 01/13/2014 11:49 AM, Richard W.M. Jones wrote:
> On Mon, Jan 13, 2014 at 10:20:22AM -0500, Daniel J Walsh wrote:
>> Secondly we prevent even unconfined_t from putting down labels on the
>> file system that the kernel does not understand.  IE If I am building a
>> F21 image on a RHEL6 box, it would blow up in enforcing mode if run as
>> unconfined_t.  We added a special policy called livecd_t that is allowed
>> to put down labels which the kernel does not understand, and unconfined_t
>> will transition to this domain.
> 
> Slightly off-topic, but this (in-)ability to label files with labels which
> the kernel doesn't know about affects libguestfs negatively too. Is there
> some reason why it's bad?
> 
> Rich.
> 
Well we could add a label to libguestfs to allow these labels.  From the
running kernel point of view you end up with unlabeled_t.  We also would like
to prevent users from making mistakes like assigning httpd_t to a file when it
is a process type.

SELinux is going to check before you put the label down unless you have the
mac_admin capability.