1 /* $NetBSD: disklabel.h,v 1.7 1998/07/07 04:29:42 thorpej 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 #ifndef __ASSEMBLER__ 47 struct dos_partition { 48 u_int8_t dp_flag; /* bootstrap flags */ 49 u_int8_t dp_shd; /* starting head */ 50 u_int8_t dp_ssect; /* starting sector */ 51 u_int8_t dp_scyl; /* starting cylinder */ 52 u_int8_t dp_typ; /* partition type (see below) */ 53 u_int8_t dp_ehd; /* end head */ 54 u_int8_t dp_esect; /* end sector */ 55 u_int8_t dp_ecyl; /* end cylinder */ 56 u_int32_t dp_start; /* absolute starting sector number */ 57 u_int32_t dp_size; /* partition size in sectors */ 58 }; 59 #endif 60 61 /* Known DOS partition types. */ 62 #define DOSPTYP_NETBSD 0xa9 /* NetBSD partition type */ 63 #define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */ 64 #define DOSPTYP_FAT12 0x01 /* 12-bit FAT */ 65 #define DOSPTYP_FAT16S 0x04 /* 16-bit FAT, less than 32M */ 66 #define DOSPTYP_FAT16B 0x06 /* 16-bit FAT, more than 32M */ 67 #define DOSPTYP_FAT32 0x0b /* 32-bit FAT */ 68 #define DOSPTYP_FAT32L 0x0c /* 32-bit FAT, LBA-mapped */ 69 #define DOSPTYP_FAT16L 0x0e /* 16-bit FAT, LBA-mapped */ 70 #define DOSPTYP_LNXEXT2 0x83 /* Linux native */ 71 72 #ifndef __ASSEMBLER__ 73 #include <sys/dkbad.h> 74 struct cpu_disklabel { 75 struct dos_partition dosparts[NDOSPART]; 76 struct dkbad bad; 77 }; 78 79 /* Isolate the relevant bits to get sector and cylinder. */ 80 #define DPSECT(s) ((s) & 0x3f) 81 #define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2)) 82 #endif 83 84 #ifdef _KERNEL 85 struct disklabel; 86 int bounds_check_with_label __P((struct buf *, struct disklabel *, int)); 87 #endif 88 89 #endif /* _MACHINE_DISKLABEL_H_ */ 90