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/* $NetBSD: disklabel.h,v 1.1.1.1 2002/10/24 08:29:34 jlam Exp $ */
/* */
/* NetBSD: disklabel.h,v 1.60.4.4 2002/01/29 22:16:37 he Exp */
/*
* Copyright (c) 1987, 1988, 1993
* The Regents of the University of California. 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)disklabel.h 8.2 (Berkeley) 7/10/94
*/
#ifndef _SYS_DISKLABEL_H_
#define _SYS_DISKLABEL_H_
/*
* We need <machine/types.h> for __HAVE_OLD_DISKLABEL
*/
#ifndef _LOCORE
#include <sys/types.h>
#endif
/*
* Each disk has a label which includes information about the hardware
* disk geometry, filesystem partitions, and drive specific information.
* The location of the label, as well as the number of partitions the
* label can describe and the number of the "whole disk" (raw)
* paritition are machine dependent.
*/
#include <machine/disklabel.h>
/*
* The absolute maximum number of disk partitions allowed.
* This is the maximum value of MAXPARTITIONS for which 'struct disklabel'
* is <= DEV_BSIZE bytes long. If MAXPARTITIONS is greater than this, beware.
*/
#define MAXMAXPARTITIONS 22
#if MAXPARTITIONS > MAXMAXPARTITIONS
#warning beware: MAXPARTITIONS bigger than MAXMAXPARTITIONS
#endif
/*
* Ports can switch their MAXPARTITIONS once, as follows:
*
* - define OLDMAXPARTITIONS in <machine/disklabel.h> as the old number
* - define MAXPARTITIONS as the new number
* - define DISKUNIT, DISKPART and DISKMINOR macros in <machine/disklabel.h>
* as appropriate for the port (see the i386 one for an example).
* - define __HAVE_OLD_DISKLABEL in <machine/types.h>
*/
#if defined(_KERNEL) && defined(__HAVE_OLD_DISKLABEL) && \
(MAXPARTITIONS < OLDMAXPARTITIONS)
#error "can only grow disklabel size"
#endif
/*
* Translate between device numbers and major/disk unit/disk partition.
*/
#ifndef __HAVE_OLD_DISKLABEL
#define DISKUNIT(dev) (minor(dev) / MAXPARTITIONS)
#define DISKPART(dev) (minor(dev) % MAXPARTITIONS)
#define DISKMINOR(unit, part) \
(((unit) * MAXPARTITIONS) + (part))
#endif
#define MAKEDISKDEV(maj, unit, part) \
(makedev((maj), DISKMINOR((unit), (part))))
#define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */
#ifndef _LOCORE
struct disklabel {
u_int32_t d_magic; /* the magic number */
u_int16_t d_type; /* drive type */
u_int16_t d_subtype; /* controller/d_type specific */
char d_typename[16]; /* type name, e.g. "eagle" */
/*
* d_packname contains the pack identifier and is returned when
* the disklabel is read off the disk or in-core copy.
* d_boot0 and d_boot1 are the (optional) names of the
* primary (block 0) and secondary (block 1-15) bootstraps
* as found in /usr/mdec. These are returned when using
* getdiskbyname(3) to retrieve the values from /etc/disktab.
*/
union {
char un_d_packname[16]; /* pack identifier */
struct {
char *un_d_boot0; /* primary bootstrap name */
char *un_d_boot1; /* secondary bootstrap name */
} un_b;
} d_un;
#define d_packname d_un.un_d_packname
#define d_boot0 d_un.un_b.un_d_boot0
#define d_boot1 d_un.un_b.un_d_boot1
/* disk geometry: */
u_int32_t d_secsize; /* # of bytes per sector */
u_int32_t d_nsectors; /* # of data sectors per track */
u_int32_t d_ntracks; /* # of tracks per cylinder */
u_int32_t d_ncylinders; /* # of data cylinders per unit */
u_int32_t d_secpercyl; /* # of data sectors per cylinder */
u_int32_t d_secperunit; /* # of data sectors per unit */
/*
* Spares (bad sector replacements) below are not counted in
* d_nsectors or d_secpercyl. Spare sectors are assumed to
* be physical sectors which occupy space at the end of each
* track and/or cylinder.
*/
u_int16_t d_sparespertrack; /* # of spare sectors per track */
u_int16_t d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternative cylinders include maintenance, replacement,
* configuration description areas, etc.
*/
u_int32_t d_acylinders; /* # of alt. cylinders per unit */
/* hardware characteristics: */
/*
* d_interleave, d_trackskew and d_cylskew describe perturbations
* in the media format used to compensate for a slow controller.
* Interleave is physical sector interleave, set up by the
* formatter or controller when formatting. When interleaving is
* in use, logically adjacent sectors are not physically
* contiguous, but instead are separated by some number of
* sectors. It is specified as the ratio of physical sectors
* traversed per logical sector. Thus an interleave of 1:1
* implies contiguous layout, while 2:1 implies that logical
* sector 0 is separated by one sector from logical sector 1.
* d_trackskew is the offset of sector 0 on track N relative to
* sector 0 on track N-1 on the same cylinder. Finally, d_cylskew
* is the offset of sector 0 on cylinder N relative to sector 0
* on cylinder N-1.
*/
u_int16_t d_rpm; /* rotational speed */
u_int16_t d_interleave; /* hardware sector interleave */
u_int16_t d_trackskew; /* sector 0 skew, per track */
u_int16_t d_cylskew; /* sector 0 skew, per cylinder */
u_int32_t d_headswitch; /* head switch time, usec */
u_int32_t d_trkseek; /* track-to-track seek, usec */
u_int32_t d_flags; /* generic flags */
#define NDDATA 5
u_int32_t d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
u_int32_t d_spare[NSPARE]; /* reserved for future use */
u_int32_t d_magic2; /* the magic number (again) */
u_int16_t d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
u_int16_t d_npartitions; /* number of partitions in following */
u_int32_t d_bbsize; /* size of boot area at sn0, bytes */
u_int32_t d_sbsize; /* max size of fs superblock, bytes */
struct partition { /* the partition table */
u_int32_t p_size; /* number of sectors in partition */
u_int32_t p_offset; /* starting sector */
u_int32_t p_fsize; /* filesystem basic fragment size */
u_int8_t p_fstype; /* filesystem type, see below */
u_int8_t p_frag; /* filesystem fragments per block */
union {
u_int16_t cpg; /* UFS: FS cylinders per group */
u_int16_t sgs; /* LFS: FS segment shift */
} __partition_u1;
#define p_cpg __partition_u1.cpg
#define p_sgs __partition_u1.sgs
} d_partitions[MAXPARTITIONS]; /* actually may be more */
};
#ifdef __HAVE_OLD_DISKLABEL
/*
* Same as above, but with OLDMAXPARTITIONS partitions. For use in
* the old DIOC* ioctl calls.
*/
struct olddisklabel {
u_int32_t d_magic;
u_int16_t d_type;
u_int16_t d_subtype;
char d_typename[16];
union {
char un_d_packname[16];
struct {
char *un_d_boot0;
char *un_d_boot1;
} un_b;
} d_un;
u_int32_t d_secsize;
u_int32_t d_nsectors;
u_int32_t d_ntracks;
u_int32_t d_ncylinders;
u_int32_t d_secpercyl;
u_int32_t d_secperunit;
u_int16_t d_sparespertrack;
u_int16_t d_sparespercyl;
u_int32_t d_acylinders;
u_int16_t d_rpm;
u_int16_t d_interleave;
u_int16_t d_trackskew;
u_int16_t d_cylskew;
u_int32_t d_headswitch;
u_int32_t d_trkseek;
u_int32_t d_flags;
u_int32_t d_drivedata[NDDATA];
u_int32_t d_spare[NSPARE];
u_int32_t d_magic2;
u_int16_t d_checksum;
u_int16_t d_npartitions;
u_int32_t d_bbsize;
u_int32_t d_sbsize;
struct opartition {
u_int32_t p_size;
u_int32_t p_offset;
u_int32_t p_fsize;
u_int8_t p_fstype;
u_int8_t p_frag;
union {
u_int16_t cpg;
u_int16_t sgs;
} __partition_u1;
} d_partitions[OLDMAXPARTITIONS];
};
#endif /* __HAVE_OLD_DISKLABEL */
#else /* _LOCORE */
/*
* offsets for asm boot files.
*/
.set d_secsize,40
.set d_nsectors,44
.set d_ntracks,48
.set d_ncylinders,52
.set d_secpercyl,56
.set d_secperunit,60
.set d_end_,276 /* size of disk label */
#endif /* _LOCORE */
/* d_type values: */
#define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
#define DTYPE_MSCP 2 /* MSCP */
#define DTYPE_DEC 3 /* other DEC (rk, rl) */
#define DTYPE_SCSI 4 /* SCSI */
#define DTYPE_ESDI 5 /* ESDI interface */
#define DTYPE_ST506 6 /* ST506 etc. */
#define DTYPE_HPIB 7 /* CS/80 on HP-IB */
#define DTYPE_HPFL 8 /* HP Fiber-link */
#define DTYPE_FLOPPY 10 /* floppy */
#define DTYPE_CCD 11 /* concatenated disk device */
#define DTYPE_VND 12 /* vnode pseudo-disk */
#define DTYPE_ATAPI 13 /* ATAPI */
#define DTYPE_RAID 14 /* RAIDframe */
#define DTYPE_LD 15 /* logical disk */
#ifdef DKTYPENAMES
static const char *const dktypenames[] = {
"unknown",
"SMD",
"MSCP",
"old DEC",
"SCSI",
"ESDI",
"ST506",
"HP-IB",
"HP-FL",
"type 9",
"floppy",
"ccd",
"vnd",
"ATAPI",
"RAID",
"ld",
NULL
};
#define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
#endif
/*
* Filesystem type and version.
* Used to interpret other filesystem-specific
* per-partition information.
*/
#define FS_UNUSED 0 /* unused */
#define FS_SWAP 1 /* swap */
#define FS_V6 2 /* Sixth Edition */
#define FS_V7 3 /* Seventh Edition */
#define FS_SYSV 4 /* System V */
#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
#define FS_V8 6 /* Eighth Edition, 4K blocks */
#define FS_BSDFFS 7 /* 4.2BSD fast file system */
#define FS_MSDOS 8 /* MSDOS file system */
#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
#define FS_OTHER 10 /* in use, but unknown/unsupported */
#define FS_HPFS 11 /* OS/2 high-performance file system */
#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
#define FS_BOOT 13 /* partition contains bootstrap */
#define FS_ADOS 14 /* AmigaDOS fast file system */
#define FS_HFS 15 /* Macintosh HFS */
#define FS_FILECORE 16 /* Acorn Filecore Filing System */
#define FS_EX2FS 17 /* Linux Extended 2 file system */
#define FS_NTFS 18 /* Windows/NT file system */
#define FS_RAID 19 /* RAIDframe component */
#define FS_CCD 20 /* concatenated disk component */
#ifdef FSTYPENAMES
static const char *const fstypenames[] = {
"unused",
"swap",
"Version 6",
"Version 7",
"System V",
"4.1BSD",
"Eighth Edition",
"4.2BSD",
"MSDOS",
"4.4LFS",
"unknown",
"HPFS",
"ISO9660",
"boot",
"ADOS",
"HFS",
"FILECORE",
"Linux Ext2",
"NTFS",
"RAID",
"ccd",
NULL
};
#define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
#endif
#ifdef FSCKNAMES
/* These are the names MOUNT_XXX from <sys/mount.h> */
static const char *const fscknames[] = {
NULL, /* unused */
NULL, /* swap */
NULL, /* Version 6 */
NULL, /* Version 7 */
NULL, /* System V */
NULL, /* 4.1BSD */
NULL, /* Eighth edition */
"ffs", /* 4.2BSD */
"msdos", /* MSDOS */
"lfs", /* 4.4LFS */
NULL, /* unknown */
NULL, /* HPFS */
NULL, /* ISO9660 */
NULL, /* boot */
NULL, /* ADOS */
NULL, /* HFS */
NULL, /* FILECORE */
"ext2fs", /* Linux Ext2 */
NULL, /* Windows/NT */
NULL, /* RAID Component */
NULL, /* concatenated disk component */
NULL /* NULL */
};
#define FSMAXNAMES (sizeof(fscknames) / sizeof(fscknames[0]) - 1)
#endif
#ifdef MOUNTNAMES
/* These are the names MOUNT_XXX from <sys/mount.h> */
static const char *const mountnames[] = {
NULL, /* unused */
NULL, /* swap */
NULL, /* Version 6 */
NULL, /* Version 7 */
NULL, /* System V */
NULL, /* 4.1BSD */
NULL, /* Eighth edition */
"ffs", /* 4.2BSD */
"msdos", /* MSDOS */
"lfs", /* 4.4LFS */
NULL, /* unknown */
NULL, /* HPFS */
"cd9660", /* ISO9660 */
NULL, /* boot */
"ados", /* ADOS */
NULL, /* HFS */
"filecore", /* FILECORE */
"ext2fs", /* Linux Ext2 */
"ntfs", /* Windows/NT */
NULL, /* RAID Component */
NULL, /* concatenated disk component */
NULL /* NULL */
};
#define FSMAXMOUNTNAMES (sizeof(mountnames) / sizeof(mountnames[0]) - 1)
#endif
/*
* flags shared by various drives:
*/
#define D_REMOVABLE 0x01 /* removable media */
#define D_ECC 0x02 /* supports ECC */
#define D_BADSECT 0x04 /* supports bad sector forw. */
#define D_RAMDISK 0x08 /* disk emulator */
#define D_CHAIN 0x10 /* can do back-back transfers */
/*
* Drive data for SMD.
*/
#define d_smdflags d_drivedata[0]
#define D_SSE 0x1 /* supports skip sectoring */
#define d_mindist d_drivedata[1]
#define d_maxdist d_drivedata[2]
#define d_sdist d_drivedata[3]
/*
* Drive data for ST506.
*/
#define d_precompcyl d_drivedata[0]
#define d_gap3 d_drivedata[1] /* used only when formatting */
/*
* Drive data for SCSI.
*/
#define d_blind d_drivedata[0]
#ifndef _LOCORE
/*
* Structure used to perform a format or other raw operation,
* returning data and/or register values. Register identification
* and format are device- and driver-dependent.
*/
struct format_op {
char *df_buf;
int df_count; /* value-result */
daddr_t df_startblk;
int df_reg[8]; /* result */
};
/*
* Structure used internally to retrieve information about a partition
* on a disk.
*/
struct partinfo {
struct disklabel *disklab;
struct partition *part;
};
#ifdef _KERNEL
struct buf_queue;
void diskerr
__P((struct buf *, char *, char *, int, int, struct disklabel *));
void disksort_cylinder __P((struct buf_queue *, struct buf *));
void disksort_blkno __P((struct buf_queue *, struct buf *));
void disksort_tail __P((struct buf_queue *, struct buf *));
u_int dkcksum __P((struct disklabel *));
int setdisklabel __P((struct disklabel *, struct disklabel *, u_long,
struct cpu_disklabel *));
char *readdisklabel __P((dev_t, void (*)(struct buf *), struct disklabel *,
struct cpu_disklabel *));
int writedisklabel __P((dev_t, void (*)(struct buf *), struct disklabel *,
struct cpu_disklabel *));
int bounds_check_with_label __P((struct buf *, struct disklabel *, int));
#endif
#endif /* _LOCORE */
#if !defined(_KERNEL) && !defined(_LOCORE)
#include <sys/cdefs.h>
#endif
#endif /* !_SYS_DISKLABEL_H_ */
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