tree ee3ada5746cd1a9ee20f095ac00790528aa4f5d3
parent 3a2bb594df4b48c6afb1f029041dd6db0735de58
author Tao Bao <tbao@google.com> 1456432180 -0800
committer Tao Bao <tbao@google.com> 1457122990 -0800

recovery: Handle devices without /cache partition.

Since we may not have /cache partition on A/B devices, let recovery
handle /cache related operations gracefully if /cache doesn't exist.

(1) Disable the wipe for /cache partition.

(2) Skip wiping /cache while wiping /data (i.e. factory reset).

(3) Disable logging-related features, until we figure out better
ways / places to store recovery logs (mainly for factory resets on A/B
devices).

Bug: 27176738
Change-Id: I7b14e53ce18960fe801ddfc15380dac6ceef1198
(cherry picked from commit 26112e587084e8b066c28a696533328adde406a9)