tree b490d12746999ec36b90d848d908414e7a74bb9e
parent 367da66255269aaac22006b032bbe6708b9595bb
author Tao Bao <tbao@google.com> 1506120333 -0700
committer Tao Bao <tbao@google.com> 1508219313 -0700

Build repeatable system images with mke2fs.

We have added support in mkuserimg_mke2fs.sh that allows specifying
filesystem UUID and hash seed UUID. This CL generates and passes the
UUIDs based on the image name and build fingerprint. This way we can
rebuild and get identical images.

Note that this only applies to images generated with `m dist` and with
signing tools (sign_target_files_apks.py and
add_img_to_target_files.py). Images under $OUT (built with `make`) are
not affected.

Bug: 64994964
Test: lunch marlin-userdebug; run `m dist` twice (after deleting the
      intermediate files under $OUT/obj/PACKAGING), and compare the
      generated images.
Change-Id: I41cf4e5869582bb930af2f35a8e9c79bff43b2a2
(cherry picked from commit 3aa21e6bb9f46b5c16c4b42757d64e738e506031)