tree 7cced1670dbb9199ca71d3ab5a4a175b25746758
parent 988280a7b7cba5888b943a6db05aab703fd9c35a
author Jeff Sharkey <jsharkey@android.com> 1337735961 -0700
committer Jeff Sharkey <jsharkey@android.com> 1337736741 -0700

Open file directly when external storage emulated.

For the special case where (1) a file lives on external storage,
(2) it's being opened for reading, and (3) external storage is
emulated, this change rewrites the path at the last moment to open
the file directly from internal storage.

This avoids the overhead of forcing I/O through the emulated storage
layer when we've already asserted the caller has permission. This is
only possible because MediaProvider is running with the media_rw GID.

Bug: 6539384
Change-Id: Ieda6b30e819340d46466f8db2e34b47bbf06ee08