commit f318ee205cc8d92def925c6158272da8a63bf1ed
author Bill Richardson <wfrichar@chromium.org> Tue Sep 23 14:30:30 2014 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> Thu Sep 25 20:27:00 2014 +0000
tree a0c380fed4d67fbfec256babd3b29175be52464c
parent d5aa5bdb292b64f259f55319fd83bd4a4d548a12

futility: implement vbutil_kernel using buffers, not files

The original vbutil_kernel command used file read and write to
make changes. Futility prefers to use memory-mapped files. This
rewrites cmd_vbutil_kernel.c to use that scheme.

BUG=none
BRANCH=ToT
TEST=make runtests

The original cmd_vbutil_kernel.c is renamed, and a test written
to ensure that the refactored version produces identical results.

Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Change-Id: Ic6c3e12429a5dcb271f8136a9edac70807d66120
Reviewed-on: https://chromium-review.googlesource.com/219647
Reviewed-by: Randall Spangler <rspangler@chromium.org>