--- /dev/null
+/*
+ * AppArmor security module
+ *
+ * This file contains AppArmor security identifier (sid) definitions
+ *
+ * Copyright 2009-2010 Canonical Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ */
+
+#ifndef __AA_SID_H
+#define __AA_SID_H
+
+#include <linux/types.h>
+
+/* sid value that will not be allocated */
+#define AA_SID_INVALID 0
+#define AA_SID_ALLOC AA_SID_INVALID
+
+u32 aa_alloc_sid(void);
+void aa_free_sid(u32 sid);
+
+#endif /* __AA_SID_H */