diff --git a/umount.c b/umount.c
new file mode 100644
index 0000000..ca5037f
--- /dev/null
+++ b/umount.c
@@ -0,0 +1,18 @@
+#include "defs.h"
+
+#define MNT_FORCE	0x00000001	/* Attempt to forcibily umount */
+#define MNT_DETACH	0x00000002	/* Just detach from the tree */
+#define MNT_EXPIRE	0x00000004	/* Mark for expiry */
+
+#include "xlat/umount_flags.h"
+
+int
+sys_umount2(struct tcb *tcp)
+{
+	if (entering(tcp)) {
+		printstr(tcp, tcp->u_arg[0], -1);
+		tprints(", ");
+		printflags(umount_flags, tcp->u_arg[1], "MNT_???");
+	}
+	return 0;
+}