110 lines
4.9 KiB
C
110 lines
4.9 KiB
C
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/* $NetBSD: disklabel.h,v 1.1.1.1 1998/06/09 07:53:05 dbj Exp $ */
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/*
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* Copyright (c) 1994 Rolf Grossmann
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Rolf Grossmann.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_DISKLABEL_H_
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#define _MACHINE_DISKLABEL_H_
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#define LABELSECTOR 0 /* sector containing label */
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#define LABELOFFSET 0 /* offset of label in sector */
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#define LABELSIZE 8192 /* size of label */
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#define MAXPARTITIONS 8 /* number of partitions */
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#define RAW_PART 2 /* raw partition: xx?c */
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#define CD_V1 0x4e655854 /* version #1: "NeXT" */
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#define CD_V2 0x646c5632 /* version #2: "dlV2" */
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#define CD_V3 0x646c5633 /* version #3: "dlV3" */
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#define IS_DISKLABEL(l) ((l)->cd_version == CD_V1 || (l)->cd_version == CD_V2 \
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|| (l)->cd_version == CD_V3)
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/* XXX should we really size all this stuff this way ? */
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#define CPULBLLEN 24
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#define MAXDNMLEN 24
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#define MAXTYPLEN 24
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#define MAXBFLEN 24
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#define MAXHNLEN 32
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#define MAXMPTLEN 16
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#define MAXFSTLEN 8
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/* The disklabel the way it is on the disk */
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struct cpu_disklabel {
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int cd_version; /* label version */
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int cd_label_blkno; /* block # of this label */
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int cd_size; /* size of media area (sectors) */
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char cd_label[CPULBLLEN]; /* disk name (label) */
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u_int cd_flags; /* flags */
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#define CD_UNINIT 0x80000000 /* label is uninitialized */
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u_int cd_tag; /* volume tag */
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char cd_name[MAXDNMLEN]; /* drive (hardware) name */
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char cd_type[MAXTYPLEN]; /* drive type */
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int cd_secsize; /* # of bytes per sector */
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int cd_ntracks; /* # of tracks per cylinder */
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int cd_nsectors; /* # of data sectors per track */
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int cd_ncylinders; /* # of data cylinders per unit */
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int cd_rpm; /* rotational speed */
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short cd_front; /* # of sectors in "front porch" */
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short cd_back; /* # of sectors in "back porch" */
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short cd_ngroups; /* # of alt groups */
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short cd_ag_size; /* alt group size (sectors) */
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short cd_ag_alts; /* alternate sectors / alt group */
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short cd_ag_off; /* sector offset to first alternate */
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int cd_boot_blkno[2]; /* boot program locations */
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char cd_kernel[MAXBFLEN]; /* default kernel name */
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char cd_hostname[MAXHNLEN]; /* host name (usu. where disk was labeled) */
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char cd_rootpartition; /* root partition letter e.g. 'a' */
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char cd_rwpartition; /* r/w partition letter e.g. 'b' */
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struct cpu_partition {
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int cp_offset; /* starting sector */
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int cp_size; /* number of sectors in partition */
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short cp_bsize; /* block size in bytes */
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short cp_fsize; /* filesystem basic fragment size */
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char cp_opt; /* optimization type: 's'pace/'t'ime */
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short cp_cpg; /* filesystem cylinders per group */
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short cp_density; /* bytes per inode density */
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char cp_minfree; /* minfree (%) */
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short cp_reserved; /* no useful data here */
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char cp_mountpt[MAXMPTLEN];/* default/standard mount point */
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char cp_automnt; /* auto-mount when inserted */
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char cp_res2; /* alignment byte */
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char cp_type[MAXFSTLEN]; /* file system type name */
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} cd_partitions[MAXPARTITIONS];
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union {
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u_short CD_v3_checksum; /* label version 3 checksum */
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#define NBAD 1670 /* sized to make label ~= 8KB */
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int CD_bad[NBAD]; /* block number that is bad */
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} cd_un;
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#define cd_v3_checksum cd_un.CD_v3_checksum
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#define cd_bad cd_un.CD_bad
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u_short cd_checksum; /* label version 1 or 2 checksum */
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};
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#endif /* _MACHINE_DISKLABEL_H_ */
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