diff --git a/kernel/cdromfs.h b/kernel/cdromfs.h
new file mode 100644
index 0000000..e234b87
--- /dev/null
+++ b/kernel/cdromfs.h
@@ -0,0 +1,26 @@
+/*
+Copyright (C) 2016-2019 The University of Notre Dame
+This software is distributed under the GNU General Public License.
+See the file LICENSE for details.
+*/
+
+#ifndef CDROMFS_H
+#define CDROMFS_H
+
+#include "kernel/types.h"
+
+#define CDROMFS_BLOCK_SIZE 2048
+
+struct cdrom_volume {
+	int root_sector;
+	int root_length;
+	int total_sectors;
+};
+
+struct cdrom_dirent {
+	int sector;
+};
+
+int cdrom_init();
+
+#endif