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Diffstat (limited to 'disk-utils/fdisklabel.h')
| -rw-r--r-- | disk-utils/fdisklabel.h | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/disk-utils/fdisklabel.h b/disk-utils/fdisklabel.h new file mode 100644 index 00000000..841046bb --- /dev/null +++ b/disk-utils/fdisklabel.h @@ -0,0 +1,233 @@ +/* + * Copyright (c) 1987, 1988 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. + */ + +#define BSD_DISKMAGIC ((u_long) 0x82564557) +#define BSD_MAXPARTITIONS 8 +#define BSD_LINUX_BOOTDIR "/usr/ucb/mdec" + +#if defined (i386) +#define BSD_LABELSECTOR 1 +#define BSD_LABELOFFSET 0 +#define BSD_BBSIZE 8192 /* size of boot area, with label */ +#define BSD_SBSIZE 8192 /* max size of fs superblock */ +#elif defined (__alpha__) +#error LABELSECTOR, LABELOFFSET, BBSIZE & SBSIZE are undefined for __alpha__ +#define BSD_LABELSECTOR 0 +#define BSD_LABELOFFSET 0 +#define BSD_BBSIZE 0 +#define BSD_SBSIZE 0 +#else +#error unknown architecture +#endif + +struct disklabel { + u_long d_magic; /* the magic number */ + short d_type; /* drive type */ + short 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. + */ +#if defined(KERNEL) || defined(STANDALONE) + char d_packname[16]; /* pack identifier */ +#else + 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 +#endif /* ! KERNEL or STANDALONE */ + /* disk geometry: */ + u_long d_secsize; /* # of bytes per sector */ + u_long d_nsectors; /* # of data sectors per track */ + u_long d_ntracks; /* # of tracks per cylinder */ + u_long d_ncylinders; /* # of data cylinders per unit */ + u_long d_secpercyl; /* # of data sectors per cylinder */ + u_long 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_short d_sparespertrack; /* # of spare sectors per track */ + u_short d_sparespercyl; /* # of spare sectors per cylinder */ + /* + * Alternate cylinders include maintenance, replacement, + * configuration description areas, etc. + */ + u_long 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_short d_rpm; /* rotational speed */ + u_short d_interleave; /* hardware sector interleave */ + u_short d_trackskew; /* sector 0 skew, per track */ + u_short d_cylskew; /* sector 0 skew, per cylinder */ + u_long d_headswitch; /* head switch time, usec */ + u_long d_trkseek; /* track-to-track seek, usec */ + u_long d_flags; /* generic flags */ +#define NDDATA 5 + u_long d_drivedata[NDDATA]; /* drive-type specific information */ +#define NSPARE 5 + u_long d_spare[NSPARE]; /* reserved for future use */ + u_long d_magic2; /* the magic number (again) */ + u_short d_checksum; /* xor of data incl. partitions */ + /* filesystem and partition information: */ + u_short d_npartitions; /* number of partitions in following */ + u_long d_bbsize; /* size of boot area at sn0, bytes */ + u_long d_sbsize; /* max size of fs superblock, bytes */ + struct bsd_partition { /* the partition table */ + u_long p_size; /* number of sectors in partition */ + u_long p_offset; /* starting sector */ + u_long p_fsize; /* filesystem basic fragment size */ + u_char p_fstype; /* filesystem type, see below */ + u_char p_frag; /* filesystem fragments per block */ + u_short p_cpg; /* filesystem cylinders per group */ + } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */ +}; + +/* d_type values: */ +#define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */ +#define BSD_DTYPE_MSCP 2 /* MSCP */ +#define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */ +#define BSD_DTYPE_SCSI 4 /* SCSI */ +#define BSD_DTYPE_ESDI 5 /* ESDI interface */ +#define BSD_DTYPE_ST506 6 /* ST506 etc. */ +#define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */ +#define BSD_DTYPE_HPFL 8 /* HP Fiber-link */ +#define BSD_DTYPE_FLOPPY 10 /* floppy */ + +/* d_subtype values: */ +#define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */ +#define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */ +#define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */ + +#ifdef DKTYPENAMES +static char *bsd_dktypenames[] = { + "unknown", + "SMD", + "MSCP", + "old DEC", + "SCSI", + "ESDI", + "ST506", + "HP-IB", + "HP-FL", + "type 9", + "floppy", + 0 +}; +#define BSD_DKMAXTYPES (sizeof(bsd_dktypenames) / sizeof(bsd_dktypenames[0]) - 1) +#endif + +/* + * Filesystem type and version. + * Used to interpret other filesystem-specific + * per-partition information. + */ +#define BSD_FS_UNUSED 0 /* unused */ +#define BSD_FS_SWAP 1 /* swap */ +#define BSD_FS_V6 2 /* Sixth Edition */ +#define BSD_FS_V7 3 /* Seventh Edition */ +#define BSD_FS_SYSV 4 /* System V */ +#define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */ +#define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */ +#define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */ +#define BSD_FS_MSDOS 8 /* MS-DOS file system */ +#define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */ +#define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */ +#define BSD_FS_HPFS 11 /* OS/2 high-performance file system */ +#define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */ +#define BSD_FS_ISOFS BSD_FS_ISO9660 +#define BSD_FS_BOOT 13 /* partition contains bootstrap */ +#define BSD_FS_ADOS 14 /* AmigaDOS fast file system */ +#define BSD_FS_HFS 15 /* Macintosh HFS */ + +#ifdef DKTYPENAMES +static struct systypes bsd_fstypes[] = { + {BSD_FS_UNUSED, "unused"}, + {BSD_FS_SWAP, "swap"}, + {BSD_FS_V6, "Version 6"}, + {BSD_FS_V7, "Version 7"}, + {BSD_FS_SYSV, "System V"}, + {BSD_FS_V71K, "4.1BSD"}, + {BSD_FS_V8, "Eighth Edition"}, + {BSD_FS_BSDFFS, "4.2BSD"}, + {BSD_FS_MSDOS, "MS-DOS"}, + {BSD_FS_BSDLFS, "4.4LFS"}, + {BSD_FS_OTHER, "unknown"}, + {BSD_FS_HPFS, "HPFS"}, + {BSD_FS_ISO9660,"ISO-9660"}, + {BSD_FS_BOOT, "boot"}, + {BSD_FS_ADOS, "ADOS"}, + {BSD_FS_HFS, "HFS"} +}; + +#define BSD_FSMAXTYPES (sizeof(bsd_fstypes) / sizeof(struct systypes)) +#endif + +/* + * flags shared by various drives: + */ +#define BSD_D_REMOVABLE 0x01 /* removable media */ +#define BSD_D_ECC 0x02 /* supports ECC */ +#define BSD_D_BADSECT 0x04 /* supports bad sector forw. */ +#define BSD_D_RAMDISK 0x08 /* disk emulator */ +#define BSD_D_CHAIN 0x10 /* can do back-back transfers */ +#define BSD_D_DOSPART 0x20 /* within MSDOS partition */ |