extract-utils: Add pinning support
* In many cases, we would like to keep certain files which do not
exactly match what might be extracted from a factory ROM. This
becomes extremely annoying over time to manually reconstruct,
and it's easy to miss these special cases when updating to a
new vendor release. It's also useful to flag additions which
aren't found in the upstream release at all.
* To solve this, we can now "pin" files to a specific sha1 hash.
Simply append the sha1sum of the file to the appropriate line
in your bloblist, prepended by a | delimiter.
* This works by backing up the current files first, running the
extraction, then checking if any pinned files need to be
restored.
* Also add an exit trap to clean up all of our tempfiles
Change-Id: I2010b5175b5701e19a3efb112e8907062ca37d66
1 file changed