Now that FDE is no longer supported, remove the FDE-related methods from
StorageManager that are no longer called.
Bug: 208476087
Change-Id: Ic24a5b029bdf51dec622d1b70cef9ef26c3d54c5
(cherry picked from commit 41fa601601)
Merged-In: Ic24a5b029bdf51dec622d1b70cef9ef26c3d54c5
Mounting encrypted OBB files has never worked reliably across devices,
partly due to its reliance on Twofish encryption support in the kernel.
This is because Twofish support (CONFIG_CRYPTO_TWOFISH) has never been
required or even recommended for Android. It has never been enabled in
GKI, but even before GKI it wasn't required or recommended. Moreover,
this is now the only Android feature that still uses dm-crypt
(CONFIG_DM_CRYPT), and some devices don't have that enabled either.
Therefore, it appears that this feature is unused. That's perhaps not
surprising, considering that the documentation for OBBs
(https://developer.android.com/google/play/expansion-files) says that
they are deprecated, and also it explains OBBs as being app files that
are opaque to the platform; the ability of the platform to mount OBBs
that happen to be in a particular format is never mentioned. That means
that OBB mounting is probably rarely used even with unencrypted OBBs.
Finally, the usefulness of OBBs having their own encryption layer (in
addition to what the platform already provides via FBE) is not clear
either, especially with such an unusual choice of cipher.
To avoid the confusion that is being caused by having the broken code
for mounting encrypted OBBs still sitting around, let's remove it.
Test: atest StorageManagerTest # on Cuttlefish
Test: atest StorageManagerIntegrationTest # on Cuttlefish
Bug: 216475849
Change-Id: I6e6a6462ab8343299dc5e0145b87dc28b16b0bc1
StorageManagerService uses DefaultContainerService to obtain ObbInfo
for files passed through mountObb() transaction. This change moves this
logic to client side and so ObbInfo will be passed as part of mountObb()
transaction.
Bug: 111838160
Test: atest src/android/os/storage/cts/StorageManagerTest.java
Test: atest core/tests/coretests/src/android/os/storage/StorageManagerIntegrationTest.java
Test: atest services/tests/servicestests/src/com/android/server/MountServiceTests.java
Change-Id: I29aee3aa54a45057df96aae289888161a3e3af71
Move the libstorage includes out of the global include path and into
frameworks/base/lib/storage/include, and export it.
Bug: 33630870
Test: m -j native
Change-Id: Idc0735360abc703496b9bc46d1a76ce8039af0d1
