Work in progres, please take a look and give early feedback if this is the way we want to structure…

src/vm/ffi_posix.cc

Index: src/vm/ffi_posix.cc
diff --git a/src/vm/fletch_api_impl.h b/src/vm/ffi_posix.cc
similarity index 65%
copy from src/vm/fletch_api_impl.h
copy to src/vm/ffi_posix.cc
index 4ac830bbe2b1f7e9fa22ee7c44936da53c825395..7bb01e58a0a410a307dc2d4ee36064cc2ff68172 100644
--- a/src/vm/fletch_api_impl.h
+++ b/src/vm/ffi_posix.cc
@@ -2,14 +2,14 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
-#ifndef SRC_VM_FLETCH_API_IMPL_H_
-#define SRC_VM_FLETCH_API_IMPL_H_
+#include "src/vm/ffi.h"
 
-#include "include/fletch_api.h"
+#include <libgen.h>
 
 namespace fletch {
 
-}  // namespace fletch
-
-#endif  // SRC_VM_FLETCH_API_IMPL_H_
+char* ForeignUtils::DirectoryName(char* path) {
+  return dirname(path);
+}
 
+}  // namespace fletch