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minix/sys/sys/disklabel.h
Lionel Sambuc f14fb60209 Libraries updates and cleanup 
* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2013-01-14 11:36:26 +01:00

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/* $NetBSD: disklabel.h,v 1.112 2012/01/16 18:47:58 christos 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. 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
#if defined(__minix) && !defined(_STANDALONE)
#include <minix/partition.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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include <nbinclude/machine/disklabel.h>
#else
#include <machine/disklabel.h>
#endif /* HAVE_NBTOOL_CONFIG_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
#if !HAVE_NBTOOL_CONFIG_H
#define DISKUNIT(dev) (minor(dev) / MAXPARTITIONS)
#define DISKPART(dev) (minor(dev) % MAXPARTITIONS)
#define DISKMINOR(unit, part) \
(((unit) * MAXPARTITIONS) + (part))
#endif /* !HAVE_NBTOOL_CONFIG_H */
#endif
#define MAKEDISKDEV(maj, unit, part) \
(makedev((maj), DISKMINOR((unit), (part))))
#define DISKMAGIC ((uint32_t)0x82564557) /* The disk magic number */
#ifndef _LOCORE
struct disklabel {
uint32_t d_magic; /* the magic number */
uint16_t d_type; /* drive type */
uint16_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;
uint64_t un_d_pad; /* force 8 byte alignment */
} 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: */
uint32_t d_secsize; /* # of bytes per sector */
uint32_t d_nsectors; /* # of data sectors per track */
uint32_t d_ntracks; /* # of tracks per cylinder */
uint32_t d_ncylinders; /* # of data cylinders per unit */
uint32_t d_secpercyl; /* # of data sectors per cylinder */
uint32_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.
*/
uint16_t d_sparespertrack; /* # of spare sectors per track */
uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternative cylinders include maintenance, replacement,
* configuration description areas, etc.
*/
uint32_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.
*/
uint16_t d_rpm; /* rotational speed */
uint16_t d_interleave; /* hardware sector interleave */
uint16_t d_trackskew; /* sector 0 skew, per track */
uint16_t d_cylskew; /* sector 0 skew, per cylinder */
uint32_t d_headswitch; /* head switch time, usec */
uint32_t d_trkseek; /* track-to-track seek, usec */
uint32_t d_flags; /* generic flags */
#define NDDATA 5
uint32_t d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
uint32_t d_spare[NSPARE]; /* reserved for future use */
uint32_t d_magic2; /* the magic number (again) */
uint16_t d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
uint16_t d_npartitions; /* number of partitions in following */
uint32_t d_bbsize; /* size of boot area at sn0, bytes */
uint32_t d_sbsize; /* max size of fs superblock, bytes */
#if defined(__minix) && !defined(_STANDALONE)
struct partition /* the partition table */
d_partitions[MAXPARTITIONS]; /* actually may be more */
#else
struct partition { /* the partition table */
uint32_t p_size; /* number of sectors in partition */
uint32_t p_offset; /* starting sector */
union {
uint32_t fsize; /* FFS, ADOS:
filesystem basic fragment size */
uint32_t cdsession; /* ISO9660: session offset */
} __partition_u2;
#define p_fsize __partition_u2.fsize
#define p_cdsession __partition_u2.cdsession
uint8_t p_fstype; /* filesystem type, see below */
uint8_t p_frag; /* filesystem fragments per block */
union {
uint16_t cpg; /* UFS: FS cylinders per group */
uint16_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 */
#endif /* defined(__minix) */
};
#if defined(__HAVE_OLD_DISKLABEL) && !HAVE_NBTOOL_CONFIG_H
/*
* Same as above, but with OLDMAXPARTITIONS partitions. For use in
* the old DIOC* ioctl calls.
*/
struct olddisklabel {
uint32_t d_magic;
uint16_t d_type;
uint16_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;
uint32_t d_secsize;
uint32_t d_nsectors;
uint32_t d_ntracks;
uint32_t d_ncylinders;
uint32_t d_secpercyl;
uint32_t d_secperunit;
uint16_t d_sparespertrack;
uint16_t d_sparespercyl;
uint32_t d_acylinders;
uint16_t d_rpm;
uint16_t d_interleave;
uint16_t d_trackskew;
uint16_t d_cylskew;
uint32_t d_headswitch;
uint32_t d_trkseek;
uint32_t d_flags;
uint32_t d_drivedata[NDDATA];
uint32_t d_spare[NSPARE];
uint32_t d_magic2;
uint16_t d_checksum;
uint16_t d_npartitions;
uint32_t d_bbsize;
uint32_t d_sbsize;
struct opartition {
uint32_t p_size;
uint32_t p_offset;
union {
uint32_t fsize;
uint32_t cdsession;
} __partition_u2;
uint8_t p_fstype;
uint8_t p_frag;
union {
uint16_t cpg;
uint16_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 */
/*
* We normally use C99 initialisers (just in case the lists below are out
* of sequence, or have gaps), but lint doesn't grok them.
* Maybe some host compilers don't either, but many have for quite some time.
*/
#ifndef lint
#define ARRAY_INIT(element,value) [element]=value
#else
#define ARRAY_INIT(element,value) value
#endif
/* Use pre-processor magic to get all the parameters one one line... */
/* d_type values: */
#define DKTYPE_DEFN(x) \
x(UNKNOWN, 0, "unknown") \
x(SMD, 1, "SMD") /* SMD, XSMD; VAX hp/up */ \
x(MSCP, 2, "MSCP") /* MSCP */ \
x(DEC, 3, "old DEC") /* other DEC (rk, rl) */ \
x(SCSI, 4, "SCSI") /* SCSI */ \
x(ESDI, 5, "ESDI") /* ESDI interface */ \
x(ST506, 6, "ST506") /* ST506 etc. */ \
x(HPIB, 7, "HP-IB") /* CS/80 on HP-IB */ \
x(HPFL, 8, "HP-FL") /* HP Fiber-link */ \
x(TYPE_9, 9, "type 9") \
x(FLOPPY, 10, "floppy") /* floppy */ \
x(CCD, 11, "ccd") /* concatenated disk device */ \
x(VND, 12, "vnd") /* uvnode pseudo-disk */ \
x(ATAPI, 13, "ATAPI") /* ATAPI */ \
x(RAID, 14, "RAID") /* RAIDframe */ \
x(LD, 15, "ld") /* logical disk */ \
x(JFS2, 16, "jfs") /* IBM JFS2 */ \
x(CGD, 17, "cgd") /* cryptographic pseudo-disk */ \
x(VINUM, 18, "vinum") /* vinum volume */ \
x(FLASH, 19, "flash") /* flash memory devices */ \
x(DM, 20, "dm") /* device-mapper pseudo-disk devices */\
x(RUMPD, 21, "rumpd") /* rump virtual disk */ \
#ifndef _LOCORE
#define DKTYPE_NUMS(tag, number, name) __CONCAT(DTYPE_,tag=number),
#ifndef DKTYPE_ENUMNAME
#define DKTYPE_ENUMNAME
#endif
enum DKTYPE_ENUMNAME { DKTYPE_DEFN(DKTYPE_NUMS) DKMAXTYPES };
#undef DKTYPE_NUMS
#endif
#ifdef DKTYPENAMES
#define DKTYPE_NAMES(tag, number, name) ARRAY_INIT(number,name),
static const char *const dktypenames[] = { DKTYPE_DEFN(DKTYPE_NAMES) NULL };
#undef DKTYPE_NAMES
#endif
/*
* Partition type names, numbers, label-names, fsck prog, and mount prog
*/
#define FSTYPE_DEFN(x) \
x(UNUSED, 0, "unused", NULL, NULL) /* unused */ \
x(SWAP, 1, "swap", NULL, NULL) /* swap */ \
x(V6, 2, "Version 6", NULL, NULL) /* Sixth Edition */ \
x(V7, 3, "Version 7", "v7fs", "v7fs") /* Seventh Edition */ \
x(SYSV, 4, "System V", NULL, NULL) /* System V */ \
x(V71K, 5, "4.1BSD", NULL, NULL) /* V7, 1K blocks (4.1, 2.9) */ \
x(V8, 6, "Eighth Edition",NULL, NULL) /* Eighth Edition, 4K blocks */ \
x(BSDFFS, 7, "4.2BSD", "ffs", "ffs") /* 4.2BSD fast file system */ \
x(MSDOS, 8, "MSDOS", "msdos", "msdos") /* MSDOS file system */ \
x(BSDLFS, 9, "4.4LFS", "lfs", "lfs") /* 4.4BSD log-structured FS */ \
x(OTHER, 10, "unknown", NULL, NULL) /* in use, unknown/unsupported */\
x(HPFS, 11, "HPFS", NULL, NULL) /* OS/2 high-performance FS */ \
x(ISO9660, 12, "ISO9660", NULL, "cd9660")/* ISO 9660, normally CD-ROM */ \
x(BOOT, 13, "boot", NULL, NULL) /* bootstrap code in partition */\
x(ADOS, 14, "ADOS", NULL, "ados") /* AmigaDOS fast file system */ \
x(HFS, 15, "HFS", NULL, NULL) /* Macintosh HFS */ \
x(FILECORE,16, "FILECORE", NULL, "filecore")/* Acorn Filecore FS */ \
x(EX2FS, 17, "Linux Ext2","ext2fs","ext2fs")/* Linux Extended 2 FS */ \
x(NTFS, 18, "NTFS", NULL, "ntfs") /* Windows/NT file system */ \
x(RAID, 19, "RAID", NULL, NULL) /* RAIDframe component */ \
x(CCD, 20, "ccd", NULL, NULL) /* concatenated disk component */\
x(JFS2, 21, "jfs", NULL, NULL) /* IBM JFS2 */ \
x(APPLEUFS,22, "Apple UFS", "ffs", "ffs") /* Apple UFS */ \
/* XXX this is not the same as FreeBSD. How to solve? */ \
x(VINUM, 23, "vinum", NULL, NULL) /* Vinum */ \
x(UDF, 24, "UDF", NULL, "udf") /* UDF */ \
x(SYSVBFS, 25, "SysVBFS", NULL, "sysvbfs")/* System V boot file system */ \
x(EFS, 26, "EFS", NULL, "efs") /* SGI's Extent Filesystem */ \
x(NILFS, 27, "NiLFS", NULL, "nilfs") /* NTT's NiLFS(2) */ \
x(CGD, 28, "cgd", NULL, NULL) /* Cryptographic disk */ \
x(MINIXFS3,29, "MINIX FSv3", NULL, NULL) /* MINIX file system v3 */
#ifndef _LOCORE
#define FS_TYPENUMS(tag, number, name, fsck, mount) __CONCAT(FS_,tag=number),
#ifndef FSTYPE_ENUMNAME
#define FSTYPE_ENUMNAME
#endif
enum FSTYPE_ENUMNAME { FSTYPE_DEFN(FS_TYPENUMS) FSMAXTYPES };
#undef FS_TYPENUMS
#endif
#ifdef FSTYPENAMES
#define FS_TYPENAMES(tag, number, name, fsck, mount) ARRAY_INIT(number,name),
static const char *const fstypenames[] = { FSTYPE_DEFN(FS_TYPENAMES) NULL };
#undef FS_TYPENAMES
#endif
#ifdef FSCKNAMES
/* These are the names MOUNT_XXX from <sys/mount.h> */
#define FS_FSCKNAMES(tag, number, name, fsck, mount) ARRAY_INIT(number,fsck),
static const char *const fscknames[] = { FSTYPE_DEFN(FS_FSCKNAMES) NULL };
#undef FS_FSCKNAMES
#define FSMAXNAMES FSMAXTYPES
#endif
#ifdef MOUNTNAMES
/* These are the names MOUNT_XXX from <sys/mount.h> */
#define FS_MOUNTNAMES(tag, number, name, fsck, mount) ARRAY_INIT(number,mount),
static const char *const mountnames[] = { FSTYPE_DEFN(FS_MOUNTNAMES) NULL };
#undef FS_MOUNTNAMES
#define FSMAXMOUNTNAMES FSMAXTYPES
#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 */
#define D_SCSI_MMC 0x20 /* SCSI MMC sessioned media */
/*
* 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. Currently unused.
*/
struct format_op {
char *df_buf;
int df_count; /* value-result */
daddr_t df_startblk;
int df_reg[8]; /* result */
};
#ifdef _KERNEL
/*
* Structure used internally to retrieve information about a partition
* on a disk.
*/
struct partinfo {
struct disklabel *disklab;
struct partition *part;
};
struct disk;
int disk_read_sectors(void (*)(struct buf *), const struct disklabel *,
struct buf *, unsigned int, int);
void diskerr(const struct buf *, const char *, const char *, int,
int, const struct disklabel *);
u_int dkcksum(struct disklabel *);
u_int dkcksum_sized(struct disklabel *, size_t);
int setdisklabel(struct disklabel *, struct disklabel *, u_long,
struct cpu_disklabel *);
const char *readdisklabel(dev_t, void (*)(struct buf *),
struct disklabel *, struct cpu_disklabel *);
int writedisklabel(dev_t, void (*)(struct buf *), struct disklabel *,
struct cpu_disklabel *);
const char *convertdisklabel(struct disklabel *, void (*)(struct buf *),
struct buf *, uint32_t);
int bounds_check_with_label(struct disk *, struct buf *, int);
int bounds_check_with_mediasize(struct buf *, int, uint64_t);
const char *getfstypename(int);
#endif
#endif /* _LOCORE */
#if !defined(_KERNEL) && !defined(_LOCORE)
#include <sys/cdefs.h>
#endif
#endif /* !_SYS_DISKLABEL_H_ */
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