When an application is incrementally installed, and a resources
operation fails due to the resources not being fully present,
the app should crash instead of swallowing the error and
returning default values to not alter the experience of
using the application.
Disable IncFsFileMap protections on ApkAssets that are a part of the
application that is running (base and splits).
Bug: 187220960
Test: atest ResourcesHardeningTest
Change-Id: Ibc67aca688720f983c7c656f404593285a54999b
Adds registering and unregistering of FabricatedOverlay to the OMS.
The process that creates the fabricated overlays owns it and is the
only process allowed to unregister it.
When a fabricated overlay is registered, overlay settings for it are
initialized in all users. When a fabricated overlay is unregistered,
it is disabled and removed from all users. When a new user is created,
it will be able to use the fabricated overlay as well.
On boot, fabricated overlays that are not referenced in overlay
settings will be deleted.
When the package that created the fabricated overlay is uninstalled,
its fabricated overlays are also unregistered.
Bug: 172471315
Test: atest OverlayDeviceTests
Change-Id: I0539656f4c919246b13129579b0286c08a398dc2
Fabricated Runtime Resource Overlays are overlays that are generated
at runtime and are stored in the data/ partition.
The system can fabricate RROs at runtime to dynamically theme the
device. Idmaps can now be created from APK RROs and fabricated RROs.
Rather than operating on ApkAssets, libidmap2 now operates on abstract
resource "containers" that supply resource values. Target resource
containers implement methods needed to query overlayable and target
overlay information. Currently only APKs can be loaded as target
resource containers. Overlay resource containers implement methods to
supply the mapping of target resource to overlay value and other
overlay information.
The format of a fabricated RRO is as follows:
0x00 - 0x04 : fabricated overlay magic (always FRRO)
0x04 - 0x08 : file format version
0x08 - 0x0c : crc of version + proto data
0x0c - EOF : proto fabricated overlay data
The magic is used to quickly detect if the file is a fabricated overlay.
The version is incremented whenever backwards incompatible changes are
made to the proto file format. Idmap must always be able to upgrade
fabricated overlays from previous versions to new versions, so all
previous versions must be checked into the tree.
Bug: 172471315
Test: libidmap2_tests && libandroidfw_tests
Change-Id: I4c9f29da278672e5695fb57d131a44c11a835180
