platform_system_sepolicy/public/gatekeeperd.te

type gatekeeperd, domain;
type gatekeeperd_exec, exec_type, file_type;

# gatekeeperd
binder_service(gatekeeperd)
binder_use(gatekeeperd)
allow gatekeeperd tee_device:chr_file rw_file_perms;
allow gatekeeperd ion_device:chr_file r_file_perms;

# need to find KeyStore and add self
allow gatekeeperd gatekeeper_service:service_manager { add find };

# Need to add auth tokens to KeyStore
use_keystore(gatekeeperd)
allow gatekeeperd keystore:keystore_key { add_auth };

# For permissions checking
allow gatekeeperd system_server:binder call;
allow gatekeeperd permission_service:service_manager find;
# For parent user ID lookup
allow gatekeeperd user_service:service_manager find;

# for SID file access
allow gatekeeperd gatekeeper_data_file:dir rw_dir_perms;
allow gatekeeperd gatekeeper_data_file:file create_file_perms;

# For hardware properties retrieval
allow gatekeeperd hardware_properties_service:service_manager find;

r_dir_file(gatekeeperd, cgroup)

neverallow { domain -gatekeeperd } gatekeeper_service:service_manager add;