356 lines
12 KiB
C
356 lines
12 KiB
C
/* $NetBSD: disklabel.h,v 1.2 2002/11/28 06:06:13 chs Exp $ */
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/* $OpenBSD: disklabel.h,v 1.5 2000/07/05 22:37:22 mickey Exp $ */
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/*
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* Copyright (c) 1994 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_DISKLABEL_H_
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#define _MACHINE_DISKLABEL_H_
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enum disklabel_tag { DLT_ALPHA, DLT_I386, DLT_AMIGA, DLT_HPPA };
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/*
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* What disklabels are we probing for, and in which order?
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*/
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#ifndef LABELPROBES
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#define LABELPROBES DLT_ALPHA, DLT_I386, DLT_AMIGA, DLT_HPPA
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#endif
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#define ALPHA_LABELSECTOR 0 /* sector containing label */
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#define ALPHA_LABELOFFSET 64 /* offset of label in sector */
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#define I386_LABELSECTOR 1 /* sector containing label */
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#define I386_LABELOFFSET 0 /* offset of label in sector */
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#define AMIGA_LABELSECTOR 0 /* sector containing label */
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#define AMIGA_LABELOFFSET 64 /* offset of label in sector */
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#define HPPA_LABELSECTOR 0 /* sector containing label */
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#define HPPA_LABELOFFSET 64 /* offset of label in sector */
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#define LABELSECTOR HPPA_LABELSECTOR
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#define LABELOFFSET HPPA_LABELOFFSET
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#define MAXPARTITIONS 16 /* number of partitions */
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#define RAW_PART 2 /* raw partition: xx?c */
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/* DOS partition table -- located in boot block */
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#define DOSBBSECTOR 0 /* DOS boot block relative sector # */
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#define DOSPARTOFF 446
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#define DOSACTIVE 0x80
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#define NDOSPART 4
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#define DOSMBR_SIGNATURE 0xaa55
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#define DOSMBR_SIGNATURE_OFF 0x1fe
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struct dos_partition {
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u_int8_t dp_flag; /* bootstrap flags */
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u_int8_t dp_shd; /* starting head */
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u_int8_t dp_ssect; /* starting sector */
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u_int8_t dp_scyl; /* starting cylinder */
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u_int8_t dp_typ; /* partition type (see below) */
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u_int8_t dp_ehd; /* end head */
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u_int8_t dp_esect; /* end sector */
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u_int8_t dp_ecyl; /* end cylinder */
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u_int32_t dp_start; /* absolute starting sector number */
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u_int32_t dp_size; /* partition size in sectors */
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};
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/* Known DOS partition types. */
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#define DOSPTYP_UNUSED 0x00 /* Unused partition */
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#define DOSPTYP_FAT12 0x01 /* 12-bit FAT */
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#define DOSPTYP_FAT16S 0x04 /* 16-bit FAT, less than 32M */
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#define DOSPTYP_EXTEND 0x05 /* Extended; contains sub-partitions */
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#define DOSPTYP_FAT16B 0x06 /* 16-bit FAT, more than 32M */
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#define DOSPTYP_FAT32 0x0b /* 32-bit FAT */
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#define DOSPTYP_FAT32L 0x0c /* 32-bit FAT, LBA-mapped */
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#define DOSPTYP_FAT16L 0x0e /* 16-bit FAT, LBA-mapped */
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#define DOSPTYP_ONTRACK 0x54
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#define DOSPTYP_LINUX 0x83 /* That other thing */
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#define DOSPTYP_FREEBSD 0xa5 /* FreeBSD partition type */
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#define DOSPTYP_OPENBSD 0xa6 /* OpenBSD partition type */
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#define DOSPTYP_NETBSD 0xa9 /* NetBSD partition type */
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/* Isolate the relevant bits to get sector and cylinder. */
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#define DPSECT(s) ((s) & 0x3f)
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#define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2))
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/*
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* describes ados Rigid Disk Blocks
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* which are used to partition a drive
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*/
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#define RDBNULL ((u_int32_t)0xffffffff)
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/*
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* you will find rdblock somewhere in [0, RDBMAXBLOCKS)
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*/
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#define RDB_MAXBLOCKS 16
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struct rdblock {
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u_int32_t id; /* 'RDSK' */
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u_int32_t nsumlong; /* number of longs in check sum */
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u_int32_t chksum; /* simple additive with wrap checksum */
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u_int32_t hostid; /* scsi target of host */
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u_int32_t nbytes; /* size of disk blocks */
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u_int32_t flags;
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u_int32_t badbhead; /* linked list of badblocks */
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u_int32_t partbhead; /* linked list of partblocks */
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u_int32_t fsbhead; /* " " of fsblocks */
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u_int32_t driveinit;
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u_int32_t resv1[6]; /* RDBNULL */
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u_int32_t ncylinders; /* number of cylinders on drive */
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u_int32_t nsectors; /* number of sectors per track */
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u_int32_t nheads; /* number of tracks per cylinder */
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u_int32_t interleave;
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u_int32_t park; /* only used with st506 i.e. not */
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u_int32_t resv2[3];
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u_int32_t wprecomp; /* start cyl for write precomp */
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u_int32_t reducedwrite; /* start cyl for reduced write current */
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u_int32_t steprate; /* driver step rate in ?s */
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u_int32_t resv3[5];
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u_int32_t rdblowb; /* lowblock of range for rdb's */
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u_int32_t rdbhighb; /* high block of range for rdb's */
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u_int32_t lowcyl; /* low cylinder of partition area */
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u_int32_t highcyl; /* upper cylinder of partition area */
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u_int32_t secpercyl; /* number of sectors per cylinder */
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u_int32_t parkseconds; /* zero if no park needed */
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u_int32_t resv4[2];
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char diskvendor[8]; /* inquiry stuff */
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char diskproduct[16]; /* inquiry stuff */
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char diskrevision[4]; /* inquiry stuff */
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char contvendor[8]; /* inquiry stuff */
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char contproduct[16]; /* inquiry stuff */
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char contrevision[4]; /* inquiry stuff */
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#if never_use_secsize
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u_int32_t resv5[0];
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#endif
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};
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#define RDBF_LAST 0x1 /* last drive available */
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#define RDBF_LASTLUN 0x2 /* last LUN available */
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#define RDBF_LASTUNIT 0x4 /* last target available */
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#define RDBF_NORESELECT 0x8 /* do not use reselect */
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#define RDBF_DISKID 0x10 /* disk id is valid ?? */
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#define RDBF_CTRLID 0x20 /* ctrl id is valid ?? */
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#define RDBF_SYNC 0x40 /* drive supports SCSI synchronous mode */
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struct ados_environ {
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u_int32_t tabsize; /* 0: environ table size */
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u_int32_t sizeblock; /* 1: n long words in a block */
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u_int32_t secorg; /* 2: not used must be zero */
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u_int32_t numheads; /* 3: number of surfaces */
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u_int32_t secperblk; /* 4: must be 1 */
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u_int32_t secpertrk; /* 5: blocks per track */
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u_int32_t resvblocks; /* 6: reserved blocks at start */
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u_int32_t prefac; /* 7: must be 0 */
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u_int32_t interleave; /* 8: normally 1 */
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u_int32_t lowcyl; /* 9: low cylinder of partition */
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u_int32_t highcyl; /* 10: upper cylinder of partition */
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u_int32_t numbufs; /* 11: ados: number of buffers */
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u_int32_t membuftype; /* 12: ados: type of bufmem */
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u_int32_t maxtrans; /* 13: maxtrans the ctrlr supports */
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u_int32_t mask; /* 14: mask for valid address */
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u_int32_t bootpri; /* 15: boot priority for autoboot */
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u_int32_t dostype; /* 16: filesystem type */
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u_int32_t baud; /* 17: serial handler baud rate */
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u_int32_t control; /* 18: control word for fs */
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u_int32_t bootblocks; /* 19: blocks containing boot code */
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u_int32_t fsize; /* 20: file system block size */
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u_int32_t frag; /* 21: allowable frags per block */
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u_int32_t cpg; /* 22: cylinders per group */
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};
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struct partblock {
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u_int32_t id; /* 'PART' */
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u_int32_t nsumlong; /* number of longs in check sum */
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u_int32_t chksum; /* simple additive with wrap checksum */
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u_int32_t hostid; /* scsi target of host */
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u_int32_t next; /* next in chain */
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u_int32_t flags; /* see below */
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u_int32_t resv1[3];
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u_char partname[32]; /* (BCPL) part name (may not be unique) */
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u_int32_t resv2[15];
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struct ados_environ e;
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#if never_use_secsize
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u_int32_t extra[9]; /* 8 for extra added to environ */
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#endif
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};
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#define PBF_BOOTABLE 0x1 /* partition is bootable */
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#define PBF_NOMOUNT 0x2 /* partition should be mounted */
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struct badblock {
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u_int32_t id; /* 'BADB' */
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u_int32_t nsumlong; /* number of longs in check sum */
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u_int32_t chksum; /* simple additive with wrap checksum */
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u_int32_t hostid; /* scsi target of host */
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u_int32_t next; /* next in chain */
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u_int32_t resv;
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struct badblockent {
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u_int32_t badblock;
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u_int32_t goodblock;
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} badtab[0]; /* 61 for secsize == 512 */
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};
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struct fsblock {
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u_int32_t id; /* 'FSHD' */
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u_int32_t nsumlong; /* number of longs in check sum */
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u_int32_t chksum; /* simple additive with wrap checksum */
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u_int32_t hostid; /* scsi target of host */
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u_int32_t next; /* next in chain */
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u_int32_t flags;
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u_int32_t resv1[2];
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u_int32_t dostype; /* this is a file system for this type */
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u_int32_t version; /* version of this fs */
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u_int32_t patchflags; /* describes which functions to replace */
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u_int32_t type; /* zero */
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u_int32_t task; /* zero */
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u_int32_t lock; /* zero */
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u_int32_t handler; /* zero */
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u_int32_t stacksize; /* to use when loading handler */
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u_int32_t priority; /* to run the fs at. */
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u_int32_t startup; /* zero */
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u_int32_t lsegblocks; /* linked list of lsegblocks of fs code */
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u_int32_t globalvec; /* bcpl vector not used mostly */
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#if never_use_secsize
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u_int32_t resv2[44];
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#endif
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};
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struct lsegblock {
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u_int32_t id; /* 'LSEG' */
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u_int32_t nsumlong; /* number of longs in check sum */
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u_int32_t chksum; /* simple additive with wrap checksum */
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u_int32_t hostid; /* scsi target of host */
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u_int32_t next; /* next in chain */
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u_int32_t loaddata[0]; /* load segment data, 123 for secsize == 512 */
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};
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#define RDBLOCK_ID 0x5244534b /* 'RDSK' */
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#define PARTBLOCK_ID 0x50415254 /* 'PART' */
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#define BADBLOCK_ID 0x42414442 /* 'BADB' */
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#define FSBLOCK_ID 0x46534844 /* 'FSHD' */
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#define LSEGBLOCK_ID 0x4c534547 /* 'LSEG' */
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/*
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* volume header for "LIF" format volumes
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*/
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struct lifvol {
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uint16_t vol_id;
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uint8_t vol_label[6];
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uint32_t vol_addr;
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uint16_t vol_oct;
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uint16_t vol_dummy;
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uint32_t vol_dirsize;
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uint16_t vol_version;
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uint16_t vol_zero;
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uint32_t vol_number;
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uint32_t vol_lastvol;
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uint32_t vol_length;
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uint8_t vol_toc[6];
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uint8_t vol_dummy1[198];
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uint32_t ipl_addr;
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uint32_t ipl_size;
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uint32_t ipl_entry;
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uint32_t vol_dummy2;
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};
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struct lifdir {
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uint8_t dir_name[10];
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uint16_t dir_type;
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uint32_t dir_addr;
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uint32_t dir_length;
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uint8_t dir_toc[6];
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uint16_t dir_flag;
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uint32_t dir_implement;
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};
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struct lif_load {
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int address;
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int count;
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};
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#define LIF_VOL_ID 0x8000
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#define LIF_VOL_OCT 0x1000
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#define LIF_DIR_SWAP 0x5243
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#define LIF_DIR_FS 0xcd38
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#define LIF_DIR_IOMAP 0xcd60
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#define LIF_DIR_HPUX 0xcd80
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#define LIF_DIR_ISL 0xce00
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#define LIF_DIR_PAD 0xcffe
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#define LIF_DIR_AUTO 0xcfff
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#define LIF_DIR_EST 0xd001
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#define LIF_DIR_TYPE 0xe942
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#define LIF_DIR_FLAG 0x8001 /* dont ask me! */
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#define LIF_SECTSIZE 256
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#define LIF_NUMDIR 8
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#define LIF_VOLSTART 0
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#define LIF_VOLSIZE sizeof(struct lifvol)
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#define LIF_DIRSTART 2048
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#define LIF_DIRSIZE (LIF_NUMDIR * sizeof(struct lifdir))
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#define LIF_FILESTART 4096
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#define btolifs(b) (((b) + (LIF_SECTSIZE - 1)) / LIF_SECTSIZE)
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#define lifstob(s) ((s) * LIF_SECTSIZE)
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#define lifstodb(s) ((s) * LIF_SECTSIZE / DEV_BSIZE)
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#include <sys/dkbad.h>
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struct cpu_disklabel {
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enum disklabel_tag labeltag;
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int labelsector;
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union {
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struct {
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} _alpha;
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struct {
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struct dos_partition dosparts[NDOSPART];
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struct dkbad bad;
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} _i386;
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struct {
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u_int32_t rdblock; /* RDBNULL -> inval. */
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u_int32_t pblist[MAXPARTITIONS];/* pblock number */
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int pbindex[MAXPARTITIONS]; /* index of pblock */
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int valid; /* valid? */
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} _amiga;
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struct {
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struct lifvol lifvol;
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struct lifdir lifdir[LIF_NUMDIR];
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} _hppa;
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} u;
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};
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#define DKBAD(x) ((x)->u._i386.bad)
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#endif /* _MACHINE_DISKLABEL_H_ */
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