1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)dkio.h 7.2 (Berkeley) 12/22/87 7 */ 8 9 /* 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 */ 18 #define DKIOCHDR _IO('d', 1) /* next I/O will read/write header */ 19