tree 8ceba3628ee8fe9f1a928c4ea8ef1426c5d73c11
parent 9d72d4175b06a70c64c8867ff65b3c4c2181c9a9
author Yabin Cui <yabinc@google.com> 1454355637 -0800
committer Yabin Cui <yabinc@google.com> 1454366594 -0800

uncrypt: generate map file by renaming tmp file.

Writing map file directly can break consistency in map file if
it fails in the middle. Instead, we write a temporary file and
rename the temporary file to map file.

Bug: 26883096
Change-Id: I5e99e942e1b75e758af5f7a48f8a08a0b0041d6a