/* $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 for __HAVE_OLD_DISKLABEL */ #ifndef _LOCORE #include #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 /* * 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 as the old number * - define MAXPARTITIONS as the new number * - define DISKUNIT, DISKPART and DISKMINOR macros in * as appropriate for the port (see the i386 one for an example). * - define __HAVE_OLD_DISKLABEL in */ #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 */ 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 */ 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 #endif #endif /* !_SYS_DISKLABEL_H_ */