tree 340803c949b9500ce5e2873fbf874fcec782fd3f
parent 258fb48d1498c8d34d6877700db993938cc89f71
author Eric Laurent <elaurent@google.com> 1523668484 -0700
committer Eric Laurent <elaurent@google.com> 1523668729 -0700

audiopolicy: clear caller identity before calling audio policy manager

Audio policy manager methods must always be executed with the
level of priviledge of audioserver process.
After checking calling permissions, audio policy service will
clear binder caller identity before calling into audio policy manager.

Also add restrictions for start source and stop source binder
transactions.

Bug: 77869640
Test: manual audio smoke tests
Change-Id: I993d4fddcea9bfa3f44093c38406b85d69ca8890