Allow traversal into /storage/emulated.

Bug: 7255202
Change-Id: Ifc017e702f0c6b6d3ecb3220a5321303f3849c51
diff --git a/init.tuna.rc b/init.tuna.rc
index e2cae6f..466ee7c 100755
--- a/init.tuna.rc
+++ b/init.tuna.rc
@@ -3,7 +3,7 @@
 on init
     # See storage config details at http://source.android.com/tech/storage/
     mkdir /mnt/shell/emulated 0700 shell shell
-    mkdir /storage/emulated 0000 root root
+    mkdir /storage/emulated 0555 root root
 
     export EXTERNAL_STORAGE /storage/emulated/legacy
     export EMULATED_STORAGE_SOURCE /mnt/shell/emulated