tree e1266fa3ff7c79de878a998b1f341f8954132996
parent ad425622cbf8ba7d337cd706094da56e50208712
author Steven Moreland <smoreland@google.com> 1492579910 -0700
committer Steven Moreland <smoreland@google.com> 1492620590 -0700

Add check for hidl package root hash.

When compiling a module, say foo.bar.baz@1.0::IBaz, assume the package
root is foo.bar:some/dir/interfaces, then:
- look at the file some/dir/interfaces/current.txt
- read hash from file corresponding from foo.bar.baz@1.0::IBaz
- file supports same-line comments with '#'
- format of file is each line is blank or looks like:
    "<sha-256 hash> <fqName>"
- if the file is misformed or the hal does not match a sha in that file,
    then it is considered build breakage.

Test: build with and without changing frozen files
Bug: 34178341
Change-Id: Ieddbc796ea974ac7c2e8b95ca69009c31e0cfb60