You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.5 KiB
68 lines
2.5 KiB
# mediacodec - audio and video codecs live here
|
|
type mediacodec, domain;
|
|
type mediacodec_exec, exec_type, vendor_file_type, file_type;
|
|
|
|
typeattribute mediacodec mlstrustedsubject;
|
|
|
|
# TODO(b/36375899) attributize this domain appropriately as hal_omx
|
|
# and use macro hal_server_domain
|
|
get_prop(mediacodec, hwservicemanager_prop)
|
|
|
|
# can route /dev/binder traffic to /dev/vndbinder
|
|
vndbinder_use(mediacodec)
|
|
|
|
not_full_treble(`
|
|
# on legacy devices, continue to allow /dev/binder traffic
|
|
binder_use(mediacodec)
|
|
binder_service(mediacodec)
|
|
add_service(mediacodec, mediacodec_service)
|
|
allow mediacodec mediametrics_service:service_manager find;
|
|
allow mediacodec surfaceflinger_service:service_manager find;
|
|
')
|
|
binder_call(mediacodec, binderservicedomain)
|
|
binder_call(mediacodec, appdomain)
|
|
|
|
# Allow mediacodec access to composer sync fences
|
|
allow mediacodec hal_graphics_composer:fd use;
|
|
|
|
allow mediacodec gpu_device:chr_file rw_file_perms;
|
|
allow mediacodec video_device:chr_file rw_file_perms;
|
|
allow mediacodec video_device:dir search;
|
|
allow mediacodec ion_device:chr_file rw_file_perms;
|
|
allow mediacodec hal_camera:fd use;
|
|
|
|
crash_dump_fallback(mediacodec)
|
|
|
|
add_hwservice(mediacodec, hal_omx_hwservice)
|
|
|
|
hal_client_domain(mediacodec, hal_allocator)
|
|
|
|
# allocate and use graphic buffers
|
|
hal_client_domain(mediacodec, hal_graphics_allocator)
|
|
|
|
# Recieve gralloc buffer FDs from bufferhubd. 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 pdx_client macro.
|
|
allow mediacodec bufferhubd:fd use;
|
|
|
|
###
|
|
### neverallow rules
|
|
###
|
|
|
|
# mediacodec should never execute any executable without a
|
|
# domain transition
|
|
neverallow mediacodec { file_type fs_type }:file execute_no_trans;
|
|
|
|
# The goal of the mediaserver split is to place media processing code into
|
|
# restrictive sandboxes with limited responsibilities and thus limited
|
|
# permissions. Example: Audioserver is only responsible for controlling audio
|
|
# hardware and processing audio content. Cameraserver does the same for camera
|
|
# hardware/content. Etc.
|
|
#
|
|
# Media processing code is inherently risky and thus should have limited
|
|
# permissions and be isolated from the rest of the system and network.
|
|
# Lengthier explanation here:
|
|
# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html
|
|
neverallow mediacodec domain:{ tcp_socket udp_socket rawip_socket } *;
|