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diff --git a/include/device/tape_status.h b/include/device/tape_status.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * Copyright (c) 1982, 1986 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *	@(#)mtio.h	7.4 (Berkeley) 8/31/88
+ */
+
+#ifndef	_TAPE_STATUS_H_
+#define	_TAPE_STATUS_H_
+
+/*
+ * Tape status
+ */
+
+struct tape_status {
+	unsigned int	mt_type;
+	unsigned int	speed;
+	unsigned int	density;
+	unsigned int	flags;
+#	define TAPE_FLG_REWIND	0x1
+#	define TAPE_FLG_WP	0x2
+};
+#define	TAPE_STATUS_COUNT	(sizeof(struct tape_status)/sizeof(int))
+#define	TAPE_STATUS		(('m'<<16) + 1)
+
+/*
+ * Constants for mt_type.  These are the same
+ * for controllers compatible with the types listed.
+ */
+#define	MT_ISTS		0x01		/* TS-11 */
+#define	MT_ISHT		0x02		/* TM03 Massbus: TE16, TU45, TU77 */
+#define	MT_ISTM		0x03		/* TM11/TE10 Unibus */
+#define	MT_ISMT		0x04		/* TM78/TU78 Massbus */
+#define	MT_ISUT		0x05		/* SI TU-45 emulation on Unibus */
+#define	MT_ISCPC	0x06		/* SUN */
+#define	MT_ISAR		0x07		/* SUN */
+#define	MT_ISTMSCP	0x08		/* DEC TMSCP protocol (TU81, TK50) */
+#define	MT_ISCY		0x09		/* CCI Cipher */
+#define	MT_ISSCSI	0x0a		/* SCSI tape (all brands) */
+
+
+/*
+ * Set status parameters
+ */
+
+struct tape_params {
+	unsigned int	mt_operation;
+	unsigned int	mt_repeat_count;
+};
+
+/* operations */
+#define MTWEOF		0	/* write an end-of-file record */
+#define MTFSF		1	/* forward space file */
+#define MTBSF		2	/* backward space file */
+#define MTFSR		3	/* forward space record */
+#define MTBSR		4	/* backward space record */
+#define MTREW		5	/* rewind */
+#define MTOFFL		6	/* rewind and put the drive offline */
+#define MTNOP		7	/* no operation, sets status only */
+#define MTCACHE		8	/* enable controller cache */
+#define MTNOCACHE	9	/* disable controller cache */
+
+
+/*
+ * U*x compatibility
+ */
+
+/* structure for MTIOCGET - mag tape get status command */
+
+struct mtget {
+	short	mt_type;	/* type of magtape device */
+/* the following two registers are grossly device dependent */
+	short	mt_dsreg;	/* ``drive status'' register */
+	short	mt_erreg;	/* ``error'' register */
+/* end device-dependent registers */
+	short	mt_resid;	/* residual count */
+/* the following two are not yet implemented */
+	unsigned long	mt_fileno;	/* file number of current position */
+	unsigned long	mt_blkno;	/* block number of current position */
+/* end not yet implemented */
+};
+
+
+/* mag tape io control commands */
+#define	MTIOCTOP	_IOW('m', 1, struct tape_params)/* do a mag tape op */
+#define	MTIOCGET	_IOR('m', 2, struct mtget)	/* get tape status */
+#define MTIOCIEOT	_IO('m', 3)			/* ignore EOT error */
+#define MTIOCEEOT	_IO('m', 4)			/* enable EOT error */
+
+
+#endif	_TAPE_STATUS_H_