diff --git a/common/sal.h b/common/sal.h
new file mode 100644
index 000000000..294bd220a
--- /dev/null
+++ b/common/sal.h
@@ -0,0 +1,7 @@
+#pragma once
+
+// SAL annotations file
+
+#define _In_
+#define _Out_
+#define _Inout_