diff --git a/include/device.h b/include/device.h
index e69de29b..fb483fb8 100644
--- a/include/device.h
+++ b/include/device.h
@@ -0,0 +1,87 @@
+/*
+ * device.h - Exports for low level device io. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2003 Anton Altaparmakov
+ *
+ * This program/include file 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_DEVICE_H
+#define _NTFS_DEVICE_H
+
+#include "types.h"
+#include "support.h"
+
+/*
+ * Defined bits for the state field in the ntfs_device structure.
+ */
+typedef enum {
+	ND_Open,	/* 1: Device is open. */
+	ND_ReadOnly,	/* 1: Device is read-only. */
+	ND_Dirty,	/* 1: Device is dirty, needs sync. */
+} ntfs_device_state_bits;
+
+#define  test_ndev_flag(nd, flag)	   test_bit(ND_##flag, (nd)->d_state)
+#define   set_ndev_flag(nd, flag)	    set_bit(ND_##flag, (nd)->d_state)
+#define clear_ndev_flag(nd, flag)	  clear_bit(ND_##flag, (nd)->d_state)
+
+#define NDevOpen(nd)		 test_ndev_flag(nd, Open)
+#define NDevSetOpen(nd)		  set_ndev_flag(nd, Open)
+#define NDevClearOpen(nd)	clear_ndev_flag(nd, Open)
+
+#define NDevReadOnly(nd)	 test_ndev_flag(nd, ReadOnly)
+#define NDevSetReadOnly(nd)	  set_ndev_flag(nd, ReadOnly)
+#define NDevClearReadOnly(nd)	clear_ndev_flag(nd, ReadOnly)
+
+#define NDevDirty(nd)		 test_ndev_flag(nd, Dirty)
+#define NDevSetDirty(nd)	  set_ndev_flag(nd, Dirty)
+#define NDevClearDirty(nd)	clear_ndev_flag(nd, Dirty)
+
+/* Forward declaration. */
+struct ntfs_device_operations;
+
+/*
+ * The ntfs device structure defining all operations needed to access the low
+ * level device underlying the ntfs volume.
+ */
+struct ntfs_device {
+	struct ntfs_device_operations *d_ops;	/* Device operations. */
+	unsigned long d_state;			/* State of the device. */
+	char *d_name;				/* Name of device. */
+	void *d_private;			/* Private data used by the
+						   device operations. */
+};
+
+/*
+ * The ntfs device operations defining all operations that can be performed on
+ * the low level device described by a ntfs device structure.
+ */
+struct ntfs_device_operations {
+	struct ntfs_device *(*open)(const char *pathname, int flags);
+	int (*close)(struct ntfs_device *dev);
+	int (*sync)(struct ntfs_device *dev);
+	s64 (*seek)(struct ntfs_device *dev, s64 offset, int whence);
+	s64 (*read)(struct ntfs_device *dev, void *buf, s64 count);
+	s64 (*write)(struct ntfs_device *dev, const void *buf, s64 count);
+	s64 (*pread)(struct ntfs_device *dev, void *buf, s64 count, s64 offset);
+	s64 (*pwrite)(struct ntfs_device *dev, const void *buf, s64 count,
+			s64 offset);
+};
+
+struct ntfs_device *ntfs_device_alloc(void);
+int ntfs_device_free(struct ntfs_device *dev);
+
+#endif /* defined _NTFS_DEVICE_H */