diskmbr.h revision 256281
1/*- 2 * Copyright (c) 1987, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)disklabel.h 8.2 (Berkeley) 7/10/94 30 * $FreeBSD: stable/10/sys/sys/diskmbr.h 247961 2013-03-07 22:32:41Z gavin $ 31 */ 32 33#ifndef _SYS_DISKMBR_H_ 34#define _SYS_DISKMBR_H_ 35 36#include <sys/ioccom.h> 37 38#define DOSBBSECTOR 0 /* DOS boot block relative sector number */ 39#define DOSDSNOFF 440 /* WinNT/2K/XP Drive Serial Number offset */ 40#define DOSPARTOFF 446 41#define DOSPARTSIZE 16 42#define NDOSPART 4 43#define NEXTDOSPART 32 44#define DOSMAGICOFFSET 510 45#define DOSMAGIC 0xAA55 46 47#define DOSPTYP_EXT 0x05 /* DOS extended partition */ 48#define DOSPTYP_FAT16 0x06 /* FAT16 partition */ 49#define DOSPTYP_NTFS 0x07 /* NTFS partition */ 50#define DOSPTYP_FAT32 0x0b /* FAT32 partition */ 51#define DOSPTYP_EXTLBA 0x0f /* DOS extended partition */ 52#define DOSPTYP_PPCBOOT 0x41 /* PReP/CHRP boot partition */ 53#define DOSPTYP_LDM 0x42 /* Win2k dynamic extended partition */ 54#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */ 55#define DOSPTYP_HFS 0xaf /* HFS/HFS+ partition type */ 56#define DOSPTYP_LINSWP 0x82 /* Linux swap partition */ 57#define DOSPTYP_LINUX 0x83 /* Linux partition */ 58#define DOSPTYP_LINLVM 0x8e /* Linux LVM partition */ 59#define DOSPTYP_PMBR 0xee /* GPT Protective MBR */ 60#define DOSPTYP_VMFS 0xfb /* VMware VMFS partition */ 61#define DOSPTYP_VMKDIAG 0xfc /* VMware vmkDiagnostic partition */ 62#define DOSPTYP_LINRAID 0xfd /* Linux raid partition */ 63 64struct dos_partition { 65 unsigned char dp_flag; /* bootstrap flags */ 66 unsigned char dp_shd; /* starting head */ 67 unsigned char dp_ssect; /* starting sector */ 68 unsigned char dp_scyl; /* starting cylinder */ 69 unsigned char dp_typ; /* partition type */ 70 unsigned char dp_ehd; /* end head */ 71 unsigned char dp_esect; /* end sector */ 72 unsigned char dp_ecyl; /* end cylinder */ 73 u_int32_t dp_start; /* absolute starting sector number */ 74 u_int32_t dp_size; /* partition size in sectors */ 75}; 76#ifdef CTASSERT 77CTASSERT(sizeof (struct dos_partition) == DOSPARTSIZE); 78#endif 79 80void dos_partition_dec(void const *pp, struct dos_partition *d); 81void dos_partition_enc(void *pp, struct dos_partition *d); 82 83#define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */ 84#define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */ 85 86#define DIOCSMBR _IOW('M', 129, u_char[512]) 87 88#endif /* !_SYS_DISKMBR_H_ */ 89