/*- * 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. */ #ifndef _SYS_DISK_BSD_H_ #define _SYS_DISK_BSD_H_ #include <sys/types.h> /* The disk magic number */ #define BSD_MAGIC 0x82564557U #define BSD_NPARTS_MIN 8 #define BSD_NPARTS_MAX 20 /* Size of bootblock area in sector-size neutral bytes */ #define BSD_BOOTBLOCK_SIZE 8192 /* partition containing whole disk */ #define BSD_PART_RAW 2 /* partition normally containing swap */ #define BSD_PART_SWAP 1 /* Drive-type specific data size (in number of 32-bit inegrals) */ #define BSD_NDRIVEDATA 5 /* Number of spare 32-bit integrals following drive-type data */ #define BSD_NSPARE 5 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" */ char d_packname[16]; /* pack identifier */ /* 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 */ /* * Alternate 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 */ uint32_t d_drivedata[BSD_NDRIVEDATA]; /* drive-type specific data */ uint32_t d_spare[BSD_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 */ struct partition { /* the partition table */ uint32_t p_size; /* number of sectors in partition */ uint32_t p_offset; /* starting sector */ uint32_t p_fsize; /* filesystem basic fragment size */ uint8_t p_fstype; /* filesystem type, see below */ uint8_t p_frag; /* filesystem fragments per block */ uint16_t p_cpg; /* filesystem cylinders per group */ } d_partitions[BSD_NPARTS_MIN]; /* actually may be more */ }; #ifdef CTASSERT CTASSERT(sizeof(struct disklabel) == 148 + BSD_NPARTS_MIN * 16); #endif /* 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 */ #define DTYPE_VINUM 12 /* vinum volume */ #define DTYPE_DOC2K 13 /* Msys DiskOnChip */ #define DTYPE_RAID 14 /* CMU RAIDFrame */ #define DTYPE_JFS2 16 /* IBM JFS 2 */ /* * 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 filesystem */ #define FS_MSDOS 8 /* MSDOS filesystem */ #define FS_BSDLFS 9 /* 4.4BSD log-structured filesystem */ #define FS_OTHER 10 /* in use, but unknown/unsupported */ #define FS_HPFS 11 /* OS/2 high-performance filesystem */ #define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */ #define FS_BOOT 13 /* partition contains bootstrap */ #define FS_VINUM 14 /* Vinum drive */ #define FS_RAID 15 /* RAIDFrame drive */ #define FS_FILECORE 16 /* Acorn Filecore Filing System */ #define FS_EXT2FS 17 /* ext2fs */ #define FS_NTFS 18 /* Windows/NT file system */ #define FS_CCD 20 /* concatenated disk component */ #define FS_JFS2 21 /* IBM JFS2 */ #define FS_HAMMER 22 /* DragonFlyBSD Hammer FS */ #define FS_HAMMER2 23 /* DragonFlyBSD Hammer2 FS */ #define FS_UDF 24 /* UDF */ #define FS_EFS 26 /* SGI's Extent File system */ #define FS_ZFS 27 /* Sun's ZFS */ #define FS_NANDFS 30 /* FreeBSD nandfs (NiLFS derived) */ /* * 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 */ #endif /* !_SYS_DISK_BSD_H_ */
