diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index df5e35968af74..148e7c109601a 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2530,6 +2530,12 @@
         android:label="@string/permlab_access_notification_policy"
         android:protectionLevel="normal" />
 
+    <!-- Allows modification of do not disturb rules and policies. Only allowed for system
+        processes.
+        @hide -->
+    <permission android:name="android.permission.MANAGE_NOTIFICATIONS"
+                android:protectionLevel="signature" />
+
     <!-- Allows access to keyguard secure storage.  Only allowed for system processes.
         @hide -->
     <permission android:name="android.permission.ACCESS_KEYGUARD_SECURE_STORAGE"
diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 14a2cbc0e591f..c895ae1fb7249 100644
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -1642,6 +1642,10 @@ public class NotificationManagerService extends SystemService {
         }
 
         private void enforcePolicyAccess(String pkg, String method) {
+            if (PackageManager.PERMISSION_GRANTED == getContext().checkCallingPermission(
+                    android.Manifest.permission.MANAGE_NOTIFICATION_RULES)) {
+                return;
+            }
             if (!checkPolicyAccess(pkg)) {
                 Slog.w(TAG, "Notification policy access denied calling " + method);
                 throw new SecurityException("Notification policy access denied");
diff --git a/services/core/java/com/android/server/notification/ZenModeHelper.java b/services/core/java/com/android/server/notification/ZenModeHelper.java
index cbe61c3da5aff..9131e5eecbf51 100644
--- a/services/core/java/com/android/server/notification/ZenModeHelper.java
+++ b/services/core/java/com/android/server/notification/ZenModeHelper.java
@@ -248,8 +248,9 @@ public class ZenModeHelper {
         }
         pw.printf("allow(calls=%s,callsFrom=%s,repeatCallers=%s,messages=%s,messagesFrom=%s,"
                 + "events=%s,reminders=%s)\n",
-                config.allowCalls, config.allowCallsFrom, config.allowRepeatCallers,
-                config.allowMessages, config.allowMessagesFrom,
+                config.allowCalls, ZenModeConfig.sourceToString(config.allowCallsFrom),
+                config.allowRepeatCallers, config.allowMessages,
+                ZenModeConfig.sourceToString(config.allowMessagesFrom),
                 config.allowEvents, config.allowReminders);
         pw.print(prefix); pw.print("  manualRule="); pw.println(config.manualRule);
         if (config.automaticRules.isEmpty()) return;