platform_system_sepolicy/public/bufferhubd.te

# bufferhubd
type bufferhubd, domain, mlstrustedsubject;
type bufferhubd_exec, exec_type, file_type;

hal_client_domain(bufferhubd, hal_graphics_allocator)

pdx_server(bufferhubd)
use_pdx(bufferhubd, performanced)

# Access the GPU.
allow bufferhubd gpu_device:chr_file rw_file_perms;

# Access /dev/ion
allow bufferhubd ion_device:chr_file r_file_perms;

# Receive sync fence FDs from mediacodec. Note that mediacodec never directly
# connects to bufferhubd via PDX. Instead, a VR app acts as a bridge between
# those two: it talks to mediacodec via Binder and talks to bufferhubd via PDX.
# Thus, there is no need to use use_pdx macro.
allow bufferhubd mediacodec:fd use;