Re: SELinux with initramfs

[Chris PeBenito <pebenito@gentoo.org>]

On 1/14/2012 9:34 AM, Sven Vermeulen wrote:
> On Sat, Jan 14, 2012 at 03:20:02PM +0100, Sven Vermeulen wrote:
>> An initramfs' /init will run in the kernel_t domain (and unconfined until
>> load_policy is called ?)
>
> Not unconfined, permissive.

It will run in the kernel initial SID ("kernel") until a policy is loaded.  Before the policy is loaded, it isn't permissive per se, as there is nothing to enforce.  SELinux is disabled in the "no policy loaded" sense (as opposed to the kernel command line selinux=0, unregistered SELinux LSM sense).  Once the policy is loaded, all of the labels will be set based on their initial SID; thus, the "kernel"-labeled processes get the kernel initial SID in the policy, kernel_t, and the initial enforcing/permissive state will be set based on the kernel command line enforcing= option, /etc/selinux/config, or kernel compiled-in default.

-- 
Chris PeBenito
<pebenito@gentoo.org>
Developer,
Hardened Gentoo Linux

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