141058Swilliam /*- 2*63359Sbostic * Copyright (c) 1990, 1993 3*63359Sbostic * The Regents of the University of California. All rights reserved. 441058Swilliam * 541058Swilliam * This code is derived from software contributed to Berkeley by 641058Swilliam * William Jolitz. 741058Swilliam * 846006Swilliam * %sccs.include.redist.c% 941058Swilliam * 10*63359Sbostic * @(#)dkio.h 8.1 (Berkeley) 06/11/93 1141058Swilliam */ 1241058Swilliam 1340455Sbill /* 1440455Sbill * Structures and definitions for disk io control commands 1540455Sbill * 1640455Sbill * THIS WHOLE AREA NEEDS MORE THOUGHT. FOR NOW JUST IMPLEMENT 1740455Sbill * ENOUGH TO READ AND WRITE HEADERS ON MASSBUS DISKS. EVENTUALLY 1840455Sbill * SHOULD BE ABLE TO DETERMINE DRIVE TYPE AND DO OTHER GOOD STUFF. 1940455Sbill */ 2040455Sbill 2140455Sbill /* disk io control commands */ 2240455Sbill #define DKIOCHDR _IO(d, 1) /* next I/O will read/write header */ 23