/* $OpenBSD: disklabel.h,v 1.9 1998/02/19 20:36:28 deraadt Exp $ */ /* $NetBSD: disklabel.h,v 1.1 1995/02/13 23:07:34 cgd 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_ enum disklabel_tag { DLT_ALPHA, DLT_I386, DLT_AMIGA }; /* * What disklabels are we probing for, and in which order? */ #ifndef LABELPROBES #define LABELPROBES DLT_ALPHA, DLT_I386, DLT_AMIGA #endif #define ALPHA_LABELSECTOR 0 /* sector containing label */ #define ALPHA_LABELOFFSET 64 /* offset of label in sector */ #define I386_LABELSECTOR 1 /* sector containing label */ #define I386_LABELOFFSET 0 /* offset of label in sector */ #define AMIGA_LABELSECTOR 0 /* sector containing label */ #define AMIGA_LABELOFFSET 64 /* offset of label in sector */ #define LABELSECTOR ALPHA_LABELSECTOR #define LABELOFFSET ALPHA_LABELOFFSET #define MAXPARTITIONS 16 /* number of partitions */ #define RAW_PART 2 /* raw partition: xx?c */ /* DOS partition table -- located in boot block */ #define DOSBBSECTOR 0 /* DOS boot block relative sector # */ #define DOSPARTOFF 446 #define DOSACTIVE 0x80 #define NDOSPART 4 #define DOSMBR_SIGNATURE 0xaa55 struct dos_partition { u_int8_t dp_flag; /* bootstrap flags */ u_int8_t dp_shd; /* starting head */ u_int8_t dp_ssect; /* starting sector */ u_int8_t dp_scyl; /* starting cylinder */ u_int8_t dp_typ; /* partition type (see below) */ u_int8_t dp_ehd; /* end head */ u_int8_t dp_esect; /* end sector */ u_int8_t dp_ecyl; /* end cylinder */ u_int32_t dp_start; /* absolute starting sector number */ u_int32_t 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_FAT16C 0x0e /* 16-bit FAT, CHS-mapped */ #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 */ /* Isolate the relevant bits to get sector and cylinder. */ #define DPSECT(s) ((s) & 0x3f) #define DPCYL(c, s) ((c) + (((s) & 0xc0) << 2)) /* * describes ados Rigid Disk Blocks * which are used to partition a drive */ #define RDBNULL ((u_int32_t)0xffffffff) /* * you will find rdblock somewhere in [0, RDBMAXBLOCKS) */ #define RDB_MAXBLOCKS 16 struct rdblock { u_int32_t id; /* 'RDSK' */ u_int32_t nsumlong; /* number of longs in check sum */ u_int32_t chksum; /* simple additive with wrap checksum */ u_int32_t hostid; /* scsi target of host */ u_int32_t nbytes; /* size of disk blocks */ u_int32_t flags; u_int32_t badbhead; /* linked list of badblocks */ u_int32_t partbhead; /* linked list of partblocks */ u_int32_t fsbhead; /* " " of fsblocks */ u_int32_t driveinit; u_int32_t resv1[6]; /* RDBNULL */ u_int32_t ncylinders; /* number of cylinders on drive */ u_int32_t nsectors; /* number of sectors per track */ u_int32_t nheads; /* number of tracks per cylinder */ u_int32_t interleave; u_int32_t park; /* only used with st506 i.e. not */ u_int32_t resv2[3]; u_int32_t wprecomp; /* start cyl for write precomp */ u_int32_t reducedwrite; /* start cyl for reduced write current */ u_int32_t steprate; /* driver step rate in ?s */ u_int32_t resv3[5]; u_int32_t rdblowb; /* lowblock of range for rdb's */ u_int32_t rdbhighb; /* high block of range for rdb's */ u_int32_t lowcyl; /* low cylinder of partition area */ u_int32_t highcyl; /* upper cylinder of partition area */ u_int32_t secpercyl; /* number of sectors per cylinder */ u_int32_t parkseconds; /* zero if no park needed */ u_int32_t resv4[2]; char diskvendor[8]; /* inquiry stuff */ char diskproduct[16]; /* inquiry stuff */ char diskrevision[4]; /* inquiry stuff */ char contvendor[8]; /* inquiry stuff */ char contproduct[16]; /* inquiry stuff */ char contrevision[4]; /* inquiry stuff */ #if never_use_secsize u_int32_t resv5[0]; #endif }; #define RDBF_LAST 0x1 /* last drive available */ #define RDBF_LASTLUN 0x2 /* last LUN available */ #define RDBF_LASTUNIT 0x4 /* last target available */ #define RDBF_NORESELECT 0x8 /* do not use reselect */ #define RDBF_DISKID 0x10 /* disk id is valid ?? */ #define RDBF_CTRLID 0x20 /* ctrl id is valid ?? */ #define RDBF_SYNC 0x40 /* drive supports SCSI synchronous mode */ struct ados_environ { u_int32_t tabsize; /* 0: environ table size */ u_int32_t sizeblock; /* 1: n long words in a block */ u_int32_t secorg; /* 2: not used must be zero */ u_int32_t numheads; /* 3: number of surfaces */ u_int32_t secperblk; /* 4: must be 1 */ u_int32_t secpertrk; /* 5: blocks per track */ u_int32_t resvblocks; /* 6: reserved blocks at start */ u_int32_t prefac; /* 7: must be 0 */ u_int32_t interleave; /* 8: normally 1 */ u_int32_t lowcyl; /* 9: low cylinder of partition */ u_int32_t highcyl; /* 10: upper cylinder of partition */ u_int32_t numbufs; /* 11: ados: number of buffers */ u_int32_t membuftype; /* 12: ados: type of bufmem */ u_int32_t maxtrans; /* 13: maxtrans the ctrlr supports */ u_int32_t mask; /* 14: mask for valid address */ u_int32_t bootpri; /* 15: boot priority for autoboot */ u_int32_t dostype; /* 16: filesystem type */ u_int32_t baud; /* 17: serial handler baud rate */ u_int32_t control; /* 18: control word for fs */ u_int32_t bootblocks; /* 19: blocks containing boot code */ u_int32_t fsize; /* 20: file system block size */ u_int32_t frag; /* 21: allowable frags per block */ u_int32_t cpg; /* 22: cylinders per group */ }; struct partblock { u_int32_t id; /* 'PART' */ u_int32_t nsumlong; /* number of longs in check sum */ u_int32_t chksum; /* simple additive with wrap checksum */ u_int32_t hostid; /* scsi target of host */ u_int32_t next; /* next in chain */ u_int32_t flags; /* see below */ u_int32_t resv1[3]; u_char partname[32]; /* (BCPL) part name (may not be unique) */ u_int32_t resv2[15]; struct ados_environ e; #if never_use_secsize u_int32_t extra[9]; /* 8 for extra added to environ */ #endif }; #define PBF_BOOTABLE 0x1 /* partition is bootable */ #define PBF_NOMOUNT 0x2 /* partition should be mounted */ struct badblock { u_int32_t id; /* 'BADB' */ u_int32_t nsumlong; /* number of longs in check sum */ u_int32_t chksum; /* simple additive with wrap checksum */ u_int32_t hostid; /* scsi target of host */ u_int32_t next; /* next in chain */ u_int32_t resv; struct badblockent { u_int32_t badblock; u_int32_t goodblock; } badtab[0]; /* 61 for secsize == 512 */ }; struct fsblock { u_int32_t id; /* 'FSHD' */ u_int32_t nsumlong; /* number of longs in check sum */ u_int32_t chksum; /* simple additive with wrap checksum */ u_int32_t hostid; /* scsi target of host */ u_int32_t next; /* next in chain */ u_int32_t flags; u_int32_t resv1[2]; u_int32_t dostype; /* this is a file system for this type */ u_int32_t version; /* version of this fs */ u_int32_t patchflags; /* describes which functions to replace */ u_int32_t type; /* zero */ u_int32_t task; /* zero */ u_int32_t lock; /* zero */ u_int32_t handler; /* zero */ u_int32_t stacksize; /* to use when loading handler */ u_int32_t priority; /* to run the fs at. */ u_int32_t startup; /* zero */ u_int32_t lsegblocks; /* linked list of lsegblocks of fs code */ u_int32_t globalvec; /* bcpl vector not used mostly */ #if never_use_secsize u_int32_t resv2[44]; #endif }; struct lsegblock { u_int32_t id; /* 'LSEG' */ u_int32_t nsumlong; /* number of longs in check sum */ u_int32_t chksum; /* simple additive with wrap checksum */ u_int32_t hostid; /* scsi target of host */ u_int32_t next; /* next in chain */ u_int32_t loaddata[0]; /* load segment data, 123 for secsize == 512 */ }; #define RDBLOCK_ID 0x5244534b /* 'RDSK' */ #define PARTBLOCK_ID 0x50415254 /* 'PART' */ #define BADBLOCK_ID 0x42414442 /* 'BADB' */ #define FSBLOCK_ID 0x46534844 /* 'FSHD' */ #define LSEGBLOCK_ID 0x4c534547 /* 'LSEG' */ #include struct cpu_disklabel { enum disklabel_tag labeltag; int labelsector; union { struct { } _alpha; struct { struct dos_partition dosparts[NDOSPART]; struct dkbad bad; } _i386; struct { u_int32_t rdblock; /* RDBNULL -> inval. */ u_int32_t pblist[MAXPARTITIONS];/* pblock number */ int pbindex[MAXPARTITIONS]; /* index of pblock */ int valid; /* valid? */ } _amiga; } u; }; #define DKBAD(x) ((x)->u._i386.bad) #endif /* _MACHINE_DISKLABEL_H_ */