tree 7edf11e524cd4d9b3b168fd0d55cd64b9d3b560a
parent 71c9ec247a7a9e85fc7bd52435f92a7cd9e04abf
author Daniel Rosenberg <drosen@google.com> 1485380925 -0800
committer Daniel Rosenberg <drosen@google.com> 1517283603 -0800

ANDROID: sdcardfs: Add GID Derivation to sdcardfs

This changes sdcardfs to modify the user and group in the
underlying filesystem depending on its usage. Ownership is
set by Android user, and package, as well as if the file is
under obb or cache. Other files can be labeled by extension.
Those values are set via the configfs interace.

To add an entry,
mkdir -p [configfs root]/sdcardfs/extensions/[gid]/[ext]

Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 34262585
Change-Id: I4e030ce84f094a678376349b1a96923e5076a0f4