diff --git a/os.h b/os.h
new file mode 100644
index 0000000..adaa426
--- /dev/null
+++ b/os.h
@@ -0,0 +1,9 @@
+
+const U32 LIST_NO_FLAGS           = 0;
+const U32 LIST_RECURSE_INTO_DIRS  = 1;
+
+struct OS_File_Info{
+  String relative_path;
+  String absolute_path;
+  B32 is_directory;
+};