blob: a82cfecbd7c1950b0151c3e7daa4ed28dc4e2939 [file] [log] [blame]
# audioserver - audio services daemon
typeattribute audioserver coredomain;
type audioserver_exec, exec_type, file_type;
r_dir_file(audioserver, sdcard_type)
binder_call(audioserver, binderservicedomain)
binder_call(audioserver, appdomain)
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)
# 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 permission_service:service_manager find;
allow audioserver power_service:service_manager find;
allow audioserver scheduling_policy_service:service_manager find;
# Allow read/write access to bluetooth-specific properties
set_prop(audioserver, bluetooth_a2dp_offload_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
allow audioserver su:fd use;
allow audioserver su:fifo_file { read write };
allow audioserver su:unix_stream_socket { read write };
### 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:
neverallow audioserver domain:{ tcp_socket udp_socket rawip_socket } *;