1*41058Swilliam /*- 2*41058Swilliam * Copyright (c) 1990 The Regents of the University of California. 3*41058Swilliam * All rights reserved. 4*41058Swilliam * 5*41058Swilliam * This code is derived from software contributed to Berkeley by 6*41058Swilliam * William Jolitz. 7*41058Swilliam * 8*41058Swilliam * %sccs.include.noredist.c% 9*41058Swilliam * 10*41058Swilliam * @(#)dkio.h 5.1 (Berkeley) 04/24/90 11*41058Swilliam */ 12*41058Swilliam 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