tree 366e6a850772276882edea341721d28703af4822
parent 40a8b07e4dd786a445648deded7a4ecac5acc81e
author David Anderson <dvander@google.com> 1576039420 -0800
committer David Anderson <dvander@google.com> 1576188819 -0800

remount: Do not run the create-scratch logic on older devices.

The prologue of fs_mgr_overlayfs_create_scratch() will implicitly
succeed on physical block devices, and implicitly fail if for some
reason they can't be accessed.

This patch makes the success and failure cases explicit. The logic
specific to DAP has been moved to CreateDynamicScratch.

fs_mgr_overlayfs_create_scratch now calls GetScratchStrategy, and only
calls CreateDynamicScratch for DAP-launch devices. In the case a
physical block device can be used, no action is taken.

Bug: 134949511
Test: adb remount and adb_remount_test.sh
Change-Id: I0af7cda9bc551416c9e2ffca5a36305f89d3bf46