Add library to use OverlayFS to make read-only partitions writable.

Using OverlayFsUtils class will allow writing to read-only partitions
without having to disable verity and without having to reboot.

Note that all modifications will be deleted upon reboot.

Bug: 216394844
Test: build sts; run sts with a manually crafted test testcase.
Change-Id: Ia176be66e2f45cad053e7e84e20682106f6ea95c
1 file changed
tree: cf7ad8b894450dbe410aa2d26bee7347d544288d
  1. build/
  2. docs/
  3. emu_test/
  4. libraries/
  5. scripts/
  6. tests/
  7. utils/
  8. PREUPLOAD.cfg