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.
66 lines
2.4 KiB
66 lines
2.4 KiB
# audioserver - audio services daemon |
|
|
|
typeattribute audioserver coredomain; |
|
|
|
type audioserver_exec, exec_type, file_type; |
|
init_daemon_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 appops_service:service_manager find; |
|
allow audioserver batterystats_service:service_manager find; |
|
allow audioserver permission_service:service_manager find; |
|
allow audioserver power_service:service_manager find; |
|
allow audioserver scheduling_policy_service:service_manager find; |
|
|
|
# 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 }; |
|
|
|
# For A2DP bridge which is loaded directly into audioserver |
|
unix_socket_connect(audioserver, bluetooth, bluetooth) |
|
|
|
### |
|
### 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 } *;
|
|
|