2 files changed, 22 insertions, 1 deletions
diff --git a/core/java/android/os/IMountService.aidl b/core/java/android/os/IMountService.aidl
index 96d44b6..4491a8a 100644
--- a/core/java/android/os/IMountService.aidl
+++ b/core/java/android/os/IMountService.aidl
@@ -75,4 +75,9 @@ interface IMountService
      * when a UMS host is detected.
      */
     void setAutoStartUms(boolean value);
+
+    /**
+     * Shuts down the MountService and gracefully unmounts all external media.
+     */
+    void shutdown();
 }
diff --git a/core/java/android/os/Power.java b/core/java/android/os/Power.java
index 3679e47..bc76180 100644
--- a/core/java/android/os/Power.java
+++ b/core/java/android/os/Power.java
@@ -17,6 +17,8 @@
 package android.os;
 
 import java.io.IOException;
+import android.os.ServiceManager;
+import android.os.IMountService;
 
 /**
  * Class that provides access to some of the power management functions.
@@ -97,5 +99,19 @@ public class Power
      * @throws IOException if reboot fails for some reason (eg, lack of
      *         permission)
      */
-    public static native void reboot(String reason) throws IOException;
+    public static void reboot(String reason) throws IOException
+    {
+        IMountService mSvc = IMountService.Stub.asInterface(
+                ServiceManager.getService("mount"));
+
+        if (mSvc != null) {
+            try {
+                mSvc.shutdown();
+            } catch (Exception e) {
+            }
+        }
+        rebootNative(reason);
+    }
+
+    private static native void rebootNative(String reason) throws IOException ;
 }