decryption: Fetch file encryption from applied fstab [1/2]

Change-Id: I240177b8eee20bd06b7d558d6cba400359f76c6c
Signed-off-by: Mohd Faraz <androiabledroid@gmail.com>
diff --git a/partitions.hpp b/partitions.hpp
index 713337b..0a63d92 100755
--- a/partitions.hpp
+++ b/partitions.hpp
@@ -36,6 +36,8 @@
 #define REPACK_ORIG_DIR "/tmp/repackorig/"
 #define REPACK_NEW_DIR "/tmp/repacknew/"
 
+#define NOT_AVAILABLE -2
+
 using namespace std;
 
 // BasePartition is used for overriding so we can run custom, device