[LTP] [PATCH 1/2] IMA: Verify that the kernel cmdline is passed and measured correctly through the kexec barrier.

[Lachlan Sneff <t-josne@linux.microsoft.com>]

On 7/14/20 8:58 PM, Mimi Zohar wrote:
> On Thu, 2020-07-02 at 11:35 -0400, Lachlan Sneff wrote:
>> Add a testcase that verifies that kexec correctly logs the
>> kernel command line to the IMA buffer and that the command
>> line is then correctly measured.
>>
>> This test must be run standalone, since it runs kexec
>> multiple times (and therefore reboots several times).
> Verifying the kexec boot command line doesn't require rebooting. ?Just
> loading the kexec kernel image should be enough (kexec -s -l).
>  ?Verifying that the measurement list, including the kexec boot command
> line, is carried across kexec could be a separate test.

This is true. However, it only appends to the IMA log once, even if you 
unload (`kexec -u`) the kexec kernel after `kexec -s -l ...`.

Therefore, the test would only be able to check kexec with the cmdline 
supplied in one way.

I will have to check internally if that's the right way to go. If it 
didn't need to reboot, then the test could be integrated into the normal 
IMA tests,
which would definitely be a good thing.

Regards,

Lachlan