private/bluetooth.te

# bluetooth app

typeattribute bluetooth coredomain, mlstrustedsubject;

app_domain(bluetooth)
net_domain(bluetooth)

# Socket creation under /data/misc/bluedroid.
type_transition bluetooth bluetooth_data_file:sock_file bluetooth_socket;

# Allow access to net_admin ioctls
allowxperm bluetooth self:udp_socket ioctl priv_sock_ioctls;

wakelock_use(bluetooth);

# Data file accesses.
allow bluetooth bluetooth_data_file:dir create_dir_perms;
allow bluetooth bluetooth_data_file:notdevfile_class_set { create_file_perms link };
allow bluetooth bluetooth_logs_data_file:dir rw_dir_perms;
allow bluetooth bluetooth_logs_data_file:file create_file_perms;

# Socket creation under /data/misc/bluedroid.
allow bluetooth bluetooth_socket:sock_file create_file_perms;

allow bluetooth self:global_capability_class_set net_admin;
allow bluetooth self:global_capability2_class_set wake_alarm;

# tethering
allow bluetooth self:packet_socket create_socket_perms_no_ioctl;
allow bluetooth self:global_capability_class_set { net_admin net_raw net_bind_service };
allow bluetooth self:tun_socket create_socket_perms_no_ioctl;
allow bluetooth tun_device:chr_file rw_file_perms;
allowxperm bluetooth tun_device:chr_file ioctl { TUNGETIFF TUNSETIFF };
allow bluetooth efs_file:dir search;

# allow Bluetooth to access uhid device for HID profile
allow bluetooth uhid_device:chr_file rw_file_perms;

allow bluetooth gpu_device:chr_file rw_file_perms;
allow bluetooth gpu_device:dir r_dir_perms;

# proc access.
allow bluetooth proc_bluetooth_writable:file rw_file_perms;

# For Bluetooth to check what profile are available
allow bluetooth proc_filesystems:file r_file_perms;
get_prop(bluetooth, incremental_prop)

# For Bluetooth to check security logging state
get_prop(bluetooth, device_logging_prop)

# Allow write access to bluetooth specific properties
set_prop(bluetooth, binder_cache_bluetooth_server_prop);
neverallow { domain -bluetooth -init }
    binder_cache_bluetooth_server_prop:property_service set;
set_prop(bluetooth, bluetooth_a2dp_offload_prop)
set_prop(bluetooth, bluetooth_audio_hal_prop)
set_prop(bluetooth, bluetooth_prop)
set_prop(bluetooth, exported_bluetooth_prop)
set_prop(bluetooth, pan_result_prop)

allow bluetooth audioserver_service:service_manager find;
allow bluetooth bluetooth_service:service_manager find;
allow bluetooth drmserver_service:service_manager find;
allow bluetooth mediaserver_service:service_manager find;
allow bluetooth radio_service:service_manager find;
allow bluetooth app_api_service:service_manager find;
allow bluetooth system_api_service:service_manager find;
allow bluetooth network_stack_service:service_manager find;
allow bluetooth system_suspend_control_service:service_manager find;
allow bluetooth hal_audio_service:service_manager find;

# already open bugreport file descriptors may be shared with
# the bluetooth process, from a file in
# /data/data/com.android.shell/files/bugreports/bugreport-*.
allow bluetooth shell_data_file:file read;

# Bluetooth audio needs RT scheduling to meet deadlines, allow sys_nice
allow bluetooth self:global_capability_class_set sys_nice;

hal_client_domain(bluetooth, hal_bluetooth)
hal_client_domain(bluetooth, hal_telephony)

# Bluetooth A2DP offload requires binding with audio HAL
hal_client_domain(bluetooth, hal_audio)

read_runtime_log_tags(bluetooth)

###
### Neverallow rules
###
### These are things that the bluetooth app should NEVER be able to do
###

# Superuser capabilities.
# Bluetooth requires net_{admin,raw,bind_service} and wake_alarm and block_suspend and sys_nice.
neverallow bluetooth self:global_capability_class_set ~{ net_admin net_raw net_bind_service sys_nice};
neverallow bluetooth self:global_capability2_class_set ~{ wake_alarm block_suspend };