Mount vendor overlay from the system partition
Using overlayfs, the system partition may provide files for older
version of vendor partitions by overlaying on the vendor partition.
Directories in /system/vendor_overlay will be overlaid on the
directories in /vendor to override existing files or provide new
files.
This feature works only if the kernel support overlayfs and has a
patch for override_creds. Otherwise, no-op.
Bug: 114679254
Test: Build and boot: nothing affected without overlayfs, or
vendor file is overrided with overlayfs
Change-Id: Iff3a308945299034123ba7bcb40dc787e102730e
6 files changed