Previously FuseAppLoopCallback needs to return values in a synchrnous
manner. The CL changes it to asynchronous mannger so that apps can
process FUSE message asynchrnously.
Bug: 35229514
Test: FuseAppLoopTest
Change-Id: I8edcfdb003a25cfd5e9c490ec871140220b21e35
These methods return kAgain if operation cannot be done without blocking
the current thread.
The CL also introduecs new helper function SetupMessageSockets so that
FuseMessages are always transfered via sockets that save message
boundaries.
Bug: 34903085
Test: libappfuse_test
Change-Id: I34544372cc1b0c7bc9622e581ae16c018a123fa9
The class is used at the app side (StorageManager) to parse FUSE
commands.
Bug: 32260320
Test: libappfuse_test
Change-Id: I1ae2904d3290a041f1efbf8fc10ba032eda5449c
