tree 54d20f8fb9f4264c48ba397d3335bac27c91d87f
parent 4978088dea32a75d330c4cf8409822406162d538
author Amin Hassani <ahassani@chromium.org> 1539237371 -0700
committer chrome-bot <chrome-bot@chromium.org> 1546411577 -0800

cros_generate_update_payload: Move utility funtions to paygen

There are a few utility functions in the cros_generate_update_payload that are
more suited to be moved to chromite/lib/paygen which they belong. Eventually the
cros_generate_update_payload will just call a function like
GenerateUpdatePayload() from lib/paygen instead of directly forking the
delta_generator.

The utility functions are mostly related to extracting partitions out of an
image. They are moved to a new file lib/paygen/partition_lib.py.  Appropriate
unittests are also moved along. In addition these functions have been improved
and udpated. Specifically, they don't return the (potentially temporary file)
path to extracted partition anymore. The path needs to be passed to them.

BUG=chromium:862679
TEST=cros flash inside and outside chroot
TEST=unittests

Change-Id: Ic8cd2eb58f4e451b74250eea6789e5f2a415354a
Reviewed-on: https://chromium-review.googlesource.com/1278089
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>