Allow coredomain access to only approved categories of vendor heaps
One of the advantages of the DMA-BUF heaps framework over
ION is that each heap is a separate char device and hence
it is possible to create separate sepolicy permissions to restrict
access to each heap.
In the case of ION, allocation in every heap had to be done through
/dev/ion which meant that there was no away to restrict allocations in
a specific heap.
This patch intends to restrict coredomain access to only approved
categories of vendor heaps. Currently, the only identified category
as per partner feedback is the system-secure heap which is defined
as a heap that allocates from protected memory.
Test: Build, video playback works on CF with ION disabled and
without sepolicy denials
Bug: 175697666
Change-Id: I923d2931c631d05d569e97f6e49145ef71324f3b
7 files changed