[LTP] [PATCH v5 1/4] IMA: Move get_algorithm_digest(), set_digest_index() to ima_setup.sh

Mimi Zohar
2020-12-18T12:10:37Z

Hi Petr,

On Fri, 2020-12-18 at 12:27 +0100, Petr Vorel wrote:
> > On Mon, 2020-12-14 at 23:19 +0100, Petr Vorel wrote:
> > > To be reusable by more tests (preparation for next commit).
>
> > > Call set_digest_index() inside get_algorithm_digest() if needed
> > > instead of expecting get_algorithm_digest() caller to call
> > > set_digest_index() before.
>
> > For the existing builtin templates, the algorithm/digest field is
> > consistent. With support for per policy rule template formats, there
> > isn't necessarily a single template format for the entire list.
>
> > In the future "set_digest_index" might need to be renamed to
> > "get_digest_index" and the lookup done for each line.
> Thanks for info, noted as TODO. Policy example would speedup fixing.

The simplest way of forcing this to happen would be by specifying a
custom format on the boot command line ("ima_template_fmt=") and
measuring buffer data (ima-buf), like the kexec boot command line.

measure func=KEXEC_CMDLINE template=ima-buf

where "template=ima-buf" isn't needed on kernels with commit
dea87d0889dd ("ima: select ima-buf template for buffer measurement") .

thanks,

Mimi