diff --git a/flash-ipmi.hpp b/flash-ipmi.hpp
index 5e5fb22..7b60b05 100644
--- a/flash-ipmi.hpp
+++ b/flash-ipmi.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <string>
 #include <vector>
 
 #include "host-ipmid/ipmid-api.h"
@@ -148,8 +149,10 @@
 class FlashUpdate : public UpdateInterface
 {
   public:
-    FlashUpdate() = default;
-    ~FlashUpdate() = default;
+    FlashUpdate(const std::string& stagingPath) :
+        flashLength(0), flashFd(nullptr), tmpPath(stagingPath){};
+    ~FlashUpdate();
+
     FlashUpdate(const FlashUpdate&) = default;
     FlashUpdate& operator=(const FlashUpdate&) = default;
     FlashUpdate(FlashUpdate&&) = default;
@@ -168,6 +171,11 @@
 
   private:
     /**
+     * Tries to close out everything.
+     */
+    void closeEverything();
+
+    /**
      * Tries to close out and delete anything staged.
      */
     void abortEverything();
@@ -178,4 +186,13 @@
      * @return false on failure.
      */
     bool openEverything();
+
+    /* The length of the flash image in bytes. */
+    uint32_t flashLength;
+
+    /* The file handle to the flash staging file. */
+    std::FILE* flashFd;
+
+    /* Where the bytes are written before verification. */
+    const std::string tmpPath;
 };