diff --git a/io/copy.h b/io/copy.h
index e193626..fd34e7f 100644
--- a/io/copy.h
+++ b/io/copy.h
@@ -1,7 +1,7 @@
 #ifndef IOUTILITIES_COPY_H
 #define IOUTILITIES_COPY_H
 
-#include "../global.h"
+#include "./nativefilestream.h"
 
 #include <functional>
 #include <iostream>
@@ -19,6 +19,9 @@ public:
     void copy(std::istream &input, std::ostream &output, std::size_t count);
     void callbackCopy(std::istream &input, std::ostream &output, std::size_t count, const std::function<bool(void)> &isAborted,
         const std::function<void(double)> &callback);
+    void copy(NativeFileStream &input, NativeFileStream &output, std::size_t count);
+    void callbackCopy(NativeFileStream &input, NativeFileStream &output, std::size_t count, const std::function<bool(void)> &isAborted,
+        const std::function<void(double)> &callback);
     char *buffer();
 
 private:
@@ -77,6 +80,36 @@ void CopyHelper<bufferSize>::callbackCopy(std::istream &input, std::ostream &out
     callback(1.0);
 }
 
+/*!
+ * \brief Copies \a count bytes from \a input to \a output.
+ * \remarks
+ * - Set an exception mask using std::ios::exceptions() to get a std::ios_base::failure exception
+ *   when an IO error occurs.
+ * - Possibly uses native APIs such as POSIX sendfile() to improve the speed (not implemented yet).
+ */
+template <std::size_t bufferSize> void CopyHelper<bufferSize>::copy(NativeFileStream &input, NativeFileStream &output, std::size_t count)
+{
+    copy(static_cast<std::istream &>(input), static_cast<std::ostream &>(output), count);
+}
+
+/*!
+ * \brief Copies \a count bytes from \a input to \a output. The procedure might be aborted and
+ *        progress updates will be reported.
+ *
+ * Copying is aborted when \a isAborted returns true. The current progress is reported by calling
+ * the specified \a callback function.
+ *
+ * - Set an exception mask using std::ios::exceptions() to get a std::ios_base::failure exception
+ *   when an IO error occurs.
+ * - Possibly uses native APIs such as POSIX sendfile() to improve the speed (not implemented yet).
+ */
+template <std::size_t bufferSize>
+void CopyHelper<bufferSize>::callbackCopy(NativeFileStream &input, NativeFileStream &output, std::size_t count,
+    const std::function<bool(void)> &isAborted, const std::function<void(double)> &callback)
+{
+    callbackCopy(static_cast<std::istream &>(input), static_cast<std::ostream &>(output), count, isAborted, callback);
+}
+
 /*!
  * \brief Returns the internal buffer.
  */