/* $OpenBSD: disklabel.h,v 1.4 2002/09/15 09:01:58 deraadt Exp $ */ /* * Copyright (c) 1994 Christopher G. Demetriou * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _MACHINE_DISKLABEL_H_ #define _MACHINE_DISKLABEL_H_ #define LABELSECTOR 1 /* sector containing label */ #define LABELOFFSET 0 /* offset of label in sector */ #define MAXPARTITIONS 16 /* number of partitions */ #define RAW_PART 2 /* raw partition: ie. rsd0c */ /* MBR partition table */ #define DOSBBSECTOR 0 /* MBR sector number */ #define DOSPARTOFF 446 /* Offset of MBR partition table */ #define NDOSPART 4 /* # of partitions in MBR */ #define DOSMAGICOFF 510 /* Offset of magic number */ #define DOSMAGIC 0xaa55 /* Actual magic number */ #define MBRMAGIC DOSMAGIC #define DOSMBR_SIGNATURE MBRMAGIC #define DOSMBR_SIGNATURE_OFF DOSMAGICOFF #define DOSACTIVE 0x80 struct dos_partition { unsigned char dp_flag; /* default boot flag */ unsigned char dp_shd; /* start head, IsN't Always Meaningful */ unsigned char dp_ssect; /* start sector, INAM */ unsigned char dp_scyl; /* start cylinder, INAM */ unsigned char dp_typ; /* partition type */ unsigned char dp_ehd; /* end head, INAM */ unsigned char dp_esect; /* end sector, INAM */ unsigned char dp_ecyl; /* end cylinder, INAM */ unsigned long dp_start; /* absolute start sector number */ unsigned long dp_size; /* partition size in sectors */ }; /* Known DOS partition types. */ #define DOSPTYP_UNUSED 0x00 /* Unused partition */ #define DOSPTYP_FAT12 0x01 /* 12-bit FAT */ #define DOSPTYP_FAT16S 0x04 /* 16-bit FAT, less than 32M */ #define DOSPTYP_EXTEND 0x05 /* Extended; contains sub-partitions */ #define DOSPTYP_FAT16B 0x06 /* 16-bit FAT, more than 32M */ #define DOSPTYP_FAT32 0x0b /* 32-bit FAT */ #define DOSPTYP_FAT32L 0x0c /* 32-bit FAT, LBA-mapped */ #define DOSPTYP_FAT16C 0x0e /* 16-bit FAT, CHS-mapped */ #define DOSPTYP_EXTENDL 0x0f /* Extended, LBA-mapped; contains sub-partitions */ #define DOSPTYP_ONTRACK 0x54 #define DOSPTYP_LINUX 0x83 /* That other thing */ #define DOSPTYP_FREEBSD 0xa5 /* FreeBSD partition type */ #define DOSPTYP_OPENBSD 0xa6 /* OpenBSD partition type */ #define DOSPTYP_NETBSD 0xa9 /* NetBSD partition type */ #include <sys/dkbad.h> /* Isolate the relevant bits to get sector and cylinder. */ #define DPSECT(s) ((s) & 0x3f) #define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2)) static __inline u_int32_t get_le(void *p); static __inline u_int32_t #ifdef __cplusplus get_le(void *p) #else get_le(p) void *p; #endif { u_int8_t *_p = (u_int8_t *)p; int x; x = _p[0]; x |= _p[1] << 8; x |= _p[2] << 16; x |= _p[3] << 24; return x; } /* HFS/DPME */ /* partition map structure from Inside Macintosh: Devices, SCSI Manager * pp. 13-14. The partition map always begins on physical block 1. * * With the exception of block 0, all blocks on the disk must belong to * exactly one partition. The partition map itself belongs to a partition * of type `APPLE_PARTITION_MAP', and is not limited in size by anything * other than available disk space. The partition map is not necessarily * the first partition listed. */ struct part_map_entry { #define PART_ENTRY_MAGIC 0x504d u_int16_t pmSig; /* partition signature */ u_int16_t pmSigPad; /* (reserved) */ u_int32_t pmMapBlkCnt; /* number of blocks in partition map */ u_int32_t pmPyPartStart; /* first physical block of partition */ u_int32_t pmPartBlkCnt; /* number of blocks in partition */ char pmPartName[32]; /* partition name */ char pmPartType[32]; /* partition type */ u_int32_t pmLgDataStart; /* first logical block of data area */ u_int32_t pmDataCnt; /* number of blocks in data area */ u_int32_t pmPartStatus; /* partition status information */ u_int32_t pmLgBootStart; /* first logical block of boot code */ u_int32_t pmBootSize; /* size of boot code, in bytes */ u_int32_t pmBootLoad; /* boot code load address */ u_int32_t pmBootLoad2; /* (reserved) */ u_int32_t pmBootEntry; /* boot code entry point */ u_int32_t pmBootEntry2; /* (reserved) */ u_int32_t pmBootCksum; /* boot code checksum */ char pmProcessor[16]; /* processor type (e.g. "68020") */ u_int8_t pmBootArgs[128]; /* A/UX boot arguments */ /* we do not index the disk image as an array, * leave out the on disk padding */ #if 0 u_int8_t pad[248]; /* pad to end of block */ #endif }; #define PART_TYPE_DRIVER "APPLE_DRIVER" #define PART_TYPE_DRIVER43 "APPLE_DRIVER43" #define PART_TYPE_DRIVERATA "APPLE_DRIVER_ATA" #define PART_TYPE_DRIVERIOKIT "APPLE_DRIVER_IOKIT" #define PART_TYPE_FWDRIVER "APPLE_FWDRIVER" #define PART_TYPE_FWB_COMPONENT "FWB DRIVER COMPONENTS" #define PART_TYPE_FREE "APPLE_FREE" #define PART_TYPE_MAC "APPLE_HFS" #define PART_TYPE_OPENBSD "OPENBSD" struct cpu_disklabel { struct dos_partition dosparts[NDOSPART]; /* only store first entry and openbsd partition */ struct part_map_entry macparts[2]; struct dkbad bad; }; #define DKBAD(x) ((x)->bad) #endif /* _MACHINE_DISKLABEL_H_ */