Find hal_foo_hwservice -> you are hal_foo_client.
Before, it was possible to access a hwservice without declaring
that you were a client.
This introduces the following macro:
hal_attribute_hwservice_client(hal_foo, hal_foo_hwservice)
which makes sure the above implication holds using a neverallow rule.
Bug: 80319537
Test: boot + sanity
Change-Id: Iededae68f14f0f3bd412c1205aa3b650a54d55c6
diff --git a/public/hal_sensors.te b/public/hal_sensors.te
index 9d7cbe9..603eead 100644
--- a/public/hal_sensors.te
+++ b/public/hal_sensors.te
@@ -2,7 +2,7 @@
binder_call(hal_sensors_client, hal_sensors_server)
add_hwservice(hal_sensors_server, hal_sensors_hwservice)
-allow hal_sensors_client hal_sensors_hwservice:hwservice_manager find;
+hal_attribute_hwservice_client(hal_sensors, hal_sensors_hwservice)
# Allow sensor hals to access ashmem memory allocated by apps
allow hal_sensors { appdomain -isolated_app }:fd use;