Check if DSU is in use before feature flag

We are using a feature flag to protect DSU and the device. But when
a Dynamic System is in use, feature flag is set as false by default.

This CL makes DSU bypass feature flag and start GSI service on boot
completed, check if the device is currently running a Dynamic System,
then, stop GSI service if the device isn't.

Bug: 132575851
Test: restart into DSU, check if the "In Use" notification is shown.
Change-Id: I9dabf9bc1716ef18d513278415c6544a5467d510

packages/DynamicSystemInstallationService/src/com/android/dynsystem/BootCompletedReceiver.java

@@ -22,8 +22,8 @@ import android.content.Intent;
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.os.image.DynamicSystemClient;
+import android.os.image.DynamicSystemManager;
 import android.util.FeatureFlagUtils;
-import android.util.Log;
 
 
 /**
@@ -37,21 +37,26 @@ public class BootCompletedReceiver extends BroadcastReceiver {
 
     @Override
     public void onReceive(Context context, Intent intent) {
-        if (!featureFlagEnabled()) {
+        String action = intent.getAction();
+
+        if (!Intent.ACTION_BOOT_COMPLETED.equals(action)) {
             return;
         }
 
-        String action = intent.getAction();
+        DynamicSystemManager dynSystem =
+                (DynamicSystemManager) context.getSystemService(Context.DYNAMIC_SYSTEM_SERVICE);
 
-        Log.d(TAG, "Broadcast received: " + action);
+        boolean isInUse = (dynSystem != null) && dynSystem.isInUse();
 
-        if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
+        if (!isInUse && !featureFlagEnabled()) {
-            Intent startServiceIntent = new Intent(
+            return;
-                    context, DynamicSystemInstallationService.class);
-
-            startServiceIntent.setAction(DynamicSystemClient.ACTION_NOTIFY_IF_IN_USE);
-            context.startServiceAsUser(startServiceIntent, UserHandle.SYSTEM);
         }
+
+        Intent startServiceIntent = new Intent(
+                context, DynamicSystemInstallationService.class);
+
+        startServiceIntent.setAction(DynamicSystemClient.ACTION_NOTIFY_IF_IN_USE);
+        context.startServiceAsUser(startServiceIntent, UserHandle.SYSTEM);
     }
 
     private boolean featureFlagEnabled() {

services/core/java/com/android/server/DynamicSystemService.java

@@ -152,7 +152,18 @@ public class DynamicSystemService extends IDynamicSystemService.Stub implements
 
     @Override
     public boolean isInUse() throws RemoteException {
-        return getGsiService().isGsiRunning();
+        boolean gsidWasRunning = "running".equals(SystemProperties.get("init.svc.gsid"));
+        boolean isInUse = false;
+
+        try {
+            isInUse = getGsiService().isGsiRunning();
+        } finally {
+            if (!gsidWasRunning && !isInUse) {
+                SystemProperties.set("ctl.stop", "gsid");
+            }
+        }
+
+        return isInUse;
     }
 
     @Override