365c57f338
bug: 158792096
Test: atest CtsMediaTestCases
atest CtsPermissionTestCases
atest CtsPermission2TestCases
atest CtsPermission3TestCases
atest CtsPermission4TestCases
Change-Id: I392c87f0a85a09d891bceaaefeae1b3f9acff55a
104 lines
3.9 KiB
Text
104 lines
3.9 KiB
Text
# audioserver - audio services daemon
|
|
|
|
typeattribute audioserver coredomain;
|
|
|
|
type audioserver_exec, exec_type, file_type, system_file_type;
|
|
init_daemon_domain(audioserver)
|
|
tmpfs_domain(audioserver)
|
|
|
|
r_dir_file(audioserver, sdcard_type)
|
|
|
|
binder_use(audioserver)
|
|
binder_call(audioserver, binderservicedomain)
|
|
binder_call(audioserver, appdomain)
|
|
binder_service(audioserver)
|
|
|
|
hal_client_domain(audioserver, hal_allocator)
|
|
# /system/lib64/hw for always-passthrough Allocator HAL ashmem / mapper .so
|
|
r_dir_file(audioserver, system_file)
|
|
|
|
hal_client_domain(audioserver, hal_audio)
|
|
|
|
userdebug_or_eng(`
|
|
# used for TEE sink - pcm capture for debug.
|
|
allow audioserver media_data_file:dir create_dir_perms;
|
|
allow audioserver audioserver_data_file:dir create_dir_perms;
|
|
allow audioserver audioserver_data_file:file create_file_perms;
|
|
|
|
# ptrace to processes in the same domain for memory leak detection
|
|
allow audioserver self:process ptrace;
|
|
')
|
|
|
|
add_service(audioserver, audioserver_service)
|
|
allow audioserver activity_service:service_manager find;
|
|
allow audioserver appops_service:service_manager find;
|
|
allow audioserver batterystats_service:service_manager find;
|
|
allow audioserver external_vibrator_service:service_manager find;
|
|
allow audioserver package_native_service:service_manager find;
|
|
allow audioserver permission_service:service_manager find;
|
|
allow audioserver permission_checker_service:service_manager find;
|
|
allow audioserver power_service:service_manager find;
|
|
allow audioserver scheduling_policy_service:service_manager find;
|
|
allow audioserver mediametrics_service:service_manager find;
|
|
allow audioserver sensor_privacy_service:service_manager find;
|
|
allow audioserver soundtrigger_middleware_service:service_manager find;
|
|
|
|
# Allow read/write access to bluetooth-specific properties
|
|
set_prop(audioserver, bluetooth_a2dp_offload_prop)
|
|
set_prop(audioserver, bluetooth_audio_hal_prop)
|
|
set_prop(audioserver, bluetooth_prop)
|
|
set_prop(audioserver, exported_bluetooth_prop)
|
|
|
|
# Grant access to audio files to audioserver
|
|
allow audioserver audio_data_file:dir ra_dir_perms;
|
|
allow audioserver audio_data_file:file create_file_perms;
|
|
|
|
# allow access to ALSA MMAP FDs for AAudio API
|
|
allow audioserver audio_device:chr_file { read write };
|
|
|
|
not_full_treble(`allow audioserver audio_device:dir r_dir_perms;')
|
|
not_full_treble(`allow audioserver audio_device:chr_file rw_file_perms;')
|
|
|
|
# For A2DP bridge which is loaded directly into audioserver
|
|
unix_socket_connect(audioserver, bluetooth, bluetooth)
|
|
|
|
# Allow shell commands from ADB and shell for CTS testing/dumping
|
|
allow audioserver adbd:fd use;
|
|
allow audioserver adbd:unix_stream_socket { read write };
|
|
allow audioserver shell:fifo_file { read write };
|
|
|
|
# Allow shell commands from ADB for CTS testing/dumping
|
|
userdebug_or_eng(`
|
|
allow audioserver su:fd use;
|
|
allow audioserver su:fifo_file { read write };
|
|
allow audioserver su:unix_stream_socket { read write };
|
|
')
|
|
|
|
# Allow write access to log tag property
|
|
set_prop(audioserver, log_tag_prop);
|
|
|
|
###
|
|
### neverallow rules
|
|
###
|
|
|
|
# audioserver should never execute any executable without a
|
|
# domain transition
|
|
neverallow audioserver { 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 audioserver domain:{ tcp_socket udp_socket rawip_socket } *;
|
|
|
|
# Allow using wake locks
|
|
wakelock_use(audioserver)
|
|
|
|
# Allow reading audio config props, e.g. af.fast_track_multiplier
|
|
get_prop(audioserver, audio_config_prop)
|