[PATCH 00/13] Introduce partial kernel_read_file() support

[Kees Cook]

On Fri, Jul 17, 2020 at 12:17:02PM -0700, Scott Branden wrote:
> Thanks for sending out.  This looks different than your other patch series.

Yes, it mutated in my head as I considered how all of this should hang
together, which is why I wanted to get it sent before the weekend. I'm
still trying to figure out why the fireware testsuite fails for me, etc.

> We should get the first 5 patches accepted now though as they are
> simple cleanups and fixes.  That will reduce the number of outstanding
> patches in the series.

Agreed. I'd like to get some more eyes on it, but I can get it ready for
-next.

> At first glance the issue with the changes after that is the existing
> API assumes it has read the whole file and failed if it did not.
> Now, if the file is larger than the amount requested there is no indication?

The intention is to have old API users unchanged and new users can use
a pre-allocated buf (with buf_size) along with file_size to examine
their partial read progress. If I broke the old API, that's a bug and I
need to fix it, but that's why I wanted to start with the firmware test
suite (basic things like module loading work fine after this series, but
I wanted to really exercise the corners that the firmware suite pokes
at).

-- 
Kees Cook