tree 88bd31e91c415b164662514189e8fb995cf6178f
parent 73380f6fe86905cea127683d83e9518057587c81
author Kun Yi <kunyi731@gmail.com> 1547070726 -0800
committer Kun Yi <kunyi731@gmail.com> 1551119763 -0800

Add implementation of a system file interface

Implement simple read/write file operation semantics for the commit
operation. Add unit tests using the mock sys interface to verify the
behaviors.

Signed-off-by: Kun Yi <kunyi@google.com>
Change-Id: I75f8005561ab342138375bccb46c21e2841aa5e1