[unix-history] / usr / src / sys / vax / dkio.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)dkio.h	7.2 (Berkeley) 12/22/87
 */

/*
 * Structures and definitions for disk io control commands
 *
 * THIS WHOLE AREA NEEDS MORE THOUGHT.  FOR NOW JUST IMPLEMENT
 * ENOUGH TO READ AND WRITE HEADERS ON MASSBUS DISKS.  EVENTUALLY
 * SHOULD BE ABLE TO DETERMINE DRIVE TYPE AND DO OTHER GOOD STUFF.
 */

/* disk io control commands */
#define DKIOCHDR	_IO('d', 1)	/* next I/O will read/write header */
Commit	Line	Data
95303edc	1	/*
0880b18e	2	* Copyright (c) 1982, 1986 Regents of the University of California.
da7c5cc6 KM	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*
ca67e7b4	6	* @(#)dkio.h 7.2 (Berkeley) 12/22/87
da7c5cc6 KM	7	*/
da7c5cc6 KM	8
0dc7e261	9	/*
95303edc BJ	10	* Structures and definitions for disk io control commands
	11	*
	12	* THIS WHOLE AREA NEEDS MORE THOUGHT. FOR NOW JUST IMPLEMENT
	13	* ENOUGH TO READ AND WRITE HEADERS ON MASSBUS DISKS. EVENTUALLY
	14	* SHOULD BE ABLE TO DETERMINE DRIVE TYPE AND DO OTHER GOOD STUFF.
	15	*/
	16
	17	/* disk io control commands */
1b8792e4	18	#define DKIOCHDR _IO('d', 1) /* next I/O will read/write header */