diff --git a/headers/os/kernel/fs_device.h b/headers/os/kernel/fs_device.h
new file mode 100644
index 0000000000..b16f79f424
--- /dev/null
+++ b/headers/os/kernel/fs_device.h
@@ -0,0 +1,31 @@
+/* File System device functions
+**
+** Distributed under the terms of the OpenBeOS License.
+*/
+#ifndef _FS_DEVICE_H
+#define	_FS_DEVICE_H
+
+#include <OS.h>
+
+
+/* mount flags */
+#define B_MOUNT_READ_ONLY		1
+#define B_MOUNT_VIRTUAL_DEVICE	2
+
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+extern status_t	fs_mount_device(const char *filesystem, const char *where, const char *device,
+					uint32 flags, const char *parameters);
+extern status_t	fs_unmount_device(const char *path);
+
+extern status_t fs_initialize_device(const char *filesystem, const char *device, uint32 flags,
+					const char *parameters);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif	/* _FS_DEVICE_H */