1 /* $NetBSD: disklabel.h,v 1.9 2001/01/02 23:06:54 tron Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _MACHINE_DISKLABEL_H_ 34 #define _MACHINE_DISKLABEL_H_ 35 36 #define LABELSECTOR 1 /* sector containing label */ 37 #define LABELOFFSET 0 /* offset of label in sector */ 38 #define MAXPARTITIONS 16 /* number of partitions */ 39 #define OLDMAXPARTITIONS 8 /* number of partitions before 1.6 */ 40 #define RAW_PART 3 /* raw partition: XX?d (XXX) */ 41 42 /* 43 * We use the highest bit of the minor number for the partition number. 44 * This maintains backward compatibility with device nodes created before 45 * MAXPARTITIONS was increased. 46 */ 47 #define __I386_MAXDISKS ((1 << 20) / MAXPARTITIONS) 48 #define DISKUNIT(dev) ((minor(dev) / OLDMAXPARTITIONS) % __I386_MAXDISKS) 49 #define DISKPART(dev) ((minor(dev) % OLDMAXPARTITIONS) + \ 50 ((minor(dev) / (__I386_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS)) 51 #define DISKMINOR(unit, part) \ 52 (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \ 53 ((part) / OLDMAXPARTITIONS) * (__I386_MAXDISKS * OLDMAXPARTITIONS)) 54 55 /* Pull in MBR partition definitions. */ 56 #include <sys/disklabel_mbr.h> 57 58 #ifndef __ASSEMBLER__ 59 #include <sys/dkbad.h> 60 struct cpu_disklabel { 61 struct mbr_partition dosparts[NMBRPART]; 62 struct dkbad bad; 63 }; 64 #endif 65 66 #ifdef _KERNEL 67 struct disklabel; 68 int bounds_check_with_label __P((struct buf *, struct disklabel *, int)); 69 #endif 70 71 #endif /* _MACHINE_DISKLABEL_H_ */ 72