1 /* $NetBSD: disklabel.h,v 1.1 1994/10/14 18:26:48 cgd 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 8 /* number of partitions */ 39 #define RAW_PART 3 /* raw partition: XX?d (XXX) */ 40 41 /* DOS partition table -- located in boot block */ 42 #define DOSBBSECTOR 0 /* DOS boot block relative sector # */ 43 #define DOSPARTOFF 446 44 #define NDOSPART 4 45 46 struct dos_partition { 47 unsigned char dp_flag; /* bootstrap flags */ 48 unsigned char dp_shd; /* starting head */ 49 unsigned char dp_ssect; /* starting sector */ 50 unsigned char dp_scyl; /* starting cylinder */ 51 unsigned char dp_typ; /* partition type (see below) */ 52 unsigned char dp_ehd; /* end head */ 53 unsigned char dp_esect; /* end sector */ 54 unsigned char dp_ecyl; /* end cylinder */ 55 unsigned long dp_start; /* absolute starting sector number */ 56 unsigned long dp_size; /* partition size in sectors */ 57 } dos_partitions[NDOSPART]; 58 59 /* Known DOS partition types. */ 60 #define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */ 61 #define DOSPTYP_NETBSD DOSPTYP_386BSD /* NetBSD partition type (XXX) */ 62 63 #include <sys/dkbad.h> 64 struct cpu_disklabel { 65 struct dos_partition dosparts[NDOSPART]; 66 struct dkbad bad; 67 }; 68 69 /* Isolate the relevant bits to get sector and cylinder. */ 70 #define DPSECT(s) ((s) & 0x3f) 71 #define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2)) 72 73 #ifdef KERNEL 74 struct disklabel; 75 int bounds_check_with_label __P((struct buf *, struct disklabel *, int)); 76 #endif 77 78 #endif /* _MACHINE_DISKLABEL_H_ */ 79