tree 25374d030530a3699705cf68dc4376d1ff2c611b
parent 3ba7a0819210d3e7d016f771c298865cae19efd4
author Amin Hassani <ahassani@google.com> 1503523780 -0700
committer chrome-bot <chrome-bot@chromium.org> 1507350664 -0700

update_engine: Add Squashfs (phase 1)

Currently the Android container in CrOS is a Squashfs image (around
500MB) and the update engine treats it as one single file. This patch
uses -map flag in 'unsquashfs' to get the location of files inside the
Squashfs image. and creates a list of files that can be used in payload
generator to create a delta. This patch adds support for both Squashfs
file system and its appropriate unittests. However, we do not activate
it in this patch, further patches will activate and use it in the
payload generator.

BUG=chromium:767120
TEST=cros_workon_make --board=amd64-generic --test update_engine;
CQ-DEPEND=CL:650518,CL:686034

Change-Id: I02179727cd736661704d0ca2d9f881754b332b36
Reviewed-on: https://chromium-review.googlesource.com/636105
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>