Add measurement API to DefaultContainerService

System applications that don't have "media_rw" access need some way to
measure the size of directories on the SD card and other internal media.
Add this API to DefaultContainerService so they can simply bind to the
service and make an RPC.

Bug: 3203974
Change-Id: I4e1bcd7a1b702b156c011ecc04f6915022cb258a

2 files changed, 34 insertions, 0 deletions

diff --git a/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java b/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java
index e6624ae..0c85af8 100644
--- a/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java
+++ b/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java
@@ -163,6 +163,11 @@ public class DefaultContainerService extends IntentService {
                 return null;
             }
         }
+
+        @Override
+        public long calculateDirectorySize(String directory) throws RemoteException {
+            return MeasurementUtils.measureDirectory(directory);
+        }
     };
 
     public DefaultContainerService() {
diff --git a/packages/DefaultContainerService/src/com/android/defcontainer/MeasurementUtils.java b/packages/DefaultContainerService/src/com/android/defcontainer/MeasurementUtils.java
new file mode 100644
index 0000000..6f5f53b
--- /dev/null
+++ b/packages/DefaultContainerService/src/com/android/defcontainer/MeasurementUtils.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.defcontainer;
+
+public class MeasurementUtils {
+    static {
+        System.loadLibrary("defcontainer_jni");
+    }
+
+    public static long measureDirectory(String path) {
+        return native_measureDirectory(path);
+    }
+
+    private native static long native_measureDirectory(String path);
+}