| 0,0 → 1,300 |
|---|
| /*- |
| * 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. |
| * 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 |
| * $FreeBSD: src/sys/sys/disklabel.h,v 1.107 2005/04/07 22:09:02 cognet Exp $ |
| */ |
| |
| #ifndef _SYS_DISKLABEL_H_ |
| #define _SYS_DISKLABEL_H_ |
| |
| #ifndef _KERNEL |
| #include <sys/types.h> |
| #endif |
| #include <sys/ioccom.h> |
| |
| /* |
| * Disk description table, see disktab(5) |
| */ |
| #define _PATH_DISKTAB "/etc/disktab" |
| |
| /* |
| * Each disk has a label which includes information about the hardware |
| * disk geometry, filesystem partitions, and drive specific information. |
| * The label is in block 0 or 1, possibly offset from the beginning |
| * to leave room for a bootstrap, etc. |
| */ |
| |
| /* XXX these should be defined per controller (or drive) elsewhere, not here! */ |
| #if defined(__i386__) || defined(__amd64__) || defined(__arm__) || \ |
| defined(__ia64__) |
| #define LABELSECTOR 1 /* sector containing label */ |
| #define LABELOFFSET 0 /* offset of label in sector */ |
| #endif |
| |
| #ifdef __alpha__ |
| #define LABELSECTOR 0 |
| #define LABELOFFSET 64 |
| #endif |
| |
| #define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */ |
| #define FREEBSD_MAXPARTITIONS 8 /* == MAXPARTITIONS in <sys/disklabel.h> */ |
| #define NBSD_MAXPARTITIONS 16 |
| |
| #define MBR_FREEBSD 0xA5 |
| #define MBR_OPENBSD 0xA6 |
| #define MBR_NETBSD 0xA9 |
| |
| /* Size of bootblock area in sector-size neutral bytes */ |
| #define BBSIZE 8192 |
| |
| #define LABEL_PART 2 /* partition containing label */ |
| #define RAW_PART 2 /* partition containing whole disk */ |
| #define SWAP_PART 1 /* partition normally containing swap */ |
| |
| 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" */ |
| |
| char d_packname[16]; /* pack identifier */ |
| |
| /* 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 */ |
| /* |
| * Alternate 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 */ |
| u_int16_t p_cpg; /* filesystem cylinders per group */ |
| } d_partitions[NBSD_MAXPARTITIONS]; /* actually may be more */ |
| }; |
| |
| #ifdef CTASSERT |
| CTASSERT(sizeof(struct disklabel) == 148 + NBSD_MAXPARTITIONS * 16); |
| #endif |
| |
| static __inline u_int16_t dkcksum(struct disklabel *lp); |
| static __inline u_int16_t |
| dkcksum(struct disklabel *lp) |
| { |
| u_int16_t *start, *end; |
| u_int16_t sum = 0; |
| |
| start = (u_int16_t *)lp; |
| end = (u_int16_t *)&lp->d_partitions[lp->d_npartitions]; |
| while (start < end) |
| sum ^= *start++; |
| return (sum); |
| } |
| |
| |
| /* 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 */ |
| |
| #ifdef DKTYPENAMES |
| static const char *dktypenames[] = { |
| "unknown", |
| "SMD", |
| "MSCP", |
| "old DEC", |
| "SCSI", |
| "ESDI", |
| "ST506", |
| "HP-IB", |
| "HP-FL", |
| "type 9", |
| "floppy", |
| "CCD", |
| "Vinum", |
| "DOC2K", |
| "Raid", |
| "?", |
| "jfs", |
| 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 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_JFS2 21 /* IBM JFS2 */ |
| |
| #ifdef FSTYPENAMES |
| static const char *fstypenames[] = { |
| "unused", |
| "swap", |
| "Version 6", |
| "Version 7", |
| "System V", |
| "4.1BSD", |
| "Eighth Edition", |
| "4.2BSD", |
| "MSDOS", |
| "4.4LFS", |
| "unknown", |
| "HPFS", |
| "ISO9660", |
| "boot", |
| "vinum", |
| "raid", |
| "?", |
| "?", |
| "?", |
| "?", |
| "jfs", |
| NULL |
| }; |
| #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[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 */ |
| |
| /* |
| * Disklabel-specific ioctls. |
| * |
| * NB: <sys/disk.h> defines ioctls from 'd'/128 and up. |
| */ |
| /* get and set disklabel */ |
| #define DIOCGDINFO _IOR('d', 101, struct disklabel)/* get */ |
| #define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */ |
| #define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */ |
| #define DIOCBSDBB _IOW('d', 110, void *) /* write bootblocks */ |
| |
| /* |
| * Functions for proper encoding/decoding of struct disklabel into/from |
| * bytestring. |
| */ |
| void nbsd_partition_le_dec(u_char *ptr, struct partition *d); |
| int nbsd_disklabel_le_dec(u_char *ptr, struct disklabel *d, int maxpart); |
| void nbsd_partition_le_enc(u_char *ptr, struct partition *d); |
| void nbsd_disklabel_le_enc(u_char *ptr, struct disklabel *d); |
| |
| #ifndef _KERNEL |
| __BEGIN_DECLS |
| struct disklabel *getdiskbyname(const char *); |
| __END_DECLS |
| #endif |
| |
| #endif /* !_SYS_DISKLABEL_H_ */ |