tree 6719bec34cef6cd4b99df90e057ce9a1a222fc8a
parent 7662a7e3d062bea6ce3bb224c237ce9cf9e6a018
author Mike Frysinger <vapier@chromium.org> 1494313149 -0400
committer chrome-bot <chrome-bot@chromium.org> 1498283807 -0700

image_signing: sign_official_build.sh: switch initial image signing to loopbacks

This changes the kernel config reading and the stateful vblock updating
to use loopback devices.  This avoids having to copy out the kernels
many times over just to read them.

BRANCH=None
BUG=chromium:714598
TEST=signing images still works

Change-Id: Ibb49791a7db998e45b35ed15ddc12126e669c730
Reviewed-on: https://chromium-review.googlesource.com/505477
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: David Riley <davidriley@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>