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/* $OpenBSD: disklabel.h,v 1.5 2007/09/19 23:47:50 tsi Exp $ */
/* $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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.
*
* @(#)sun_disklabel.h 8.1 (Berkeley) 6/11/93
*/
/*
* SunOS disk label layout (only relevant portions discovered here).
* This describes the format typically found on SPARC systems, but not
* that usually seen on SunOS/x86 and SunOS/amd64 systems.
*/
#define SUN_DKMAGIC 55998
/* partition info */
struct sun_dkpart {
u_int sdkp_cyloffset; /* starting cylinder */
u_int sdkp_nsectors; /* number of sectors */
};
/* partition types */
struct sun_partinfo {
u_short spi_tag; /* filesystem type */
u_short spi_flag; /* flags */
};
/* some spi_tag values */
#define SPTAG_EMPTY 0x00
#define SPTAG_BOOT 0x01
#define SPTAG_SUNOS_ROOT 0x02
#define SPTAG_SUNOS_SWAP 0x03
#define SPTAG_SUNOS_USR 0x04
#define SPTAG_WHOLE_DISK 0x05
#define SPTAG_SUNOS_STAND 0x06
#define SPTAG_SUNOS_VAR 0x07
#define SPTAG_SUNOS_HOME 0x08
#define SPTAG_LINUX_SWAP 0x82
#define SPTAG_LINUX_EXT2 0x83
#define SUNXPART 8
#define SL_XPMAG (0x199d1fe2+SUNXPART)
#define SL_XPMAGTYP (0x199d1fe2+SUNXPART+1) /* contains types */
struct sun_disklabel { /* total size = 512 bytes */
char sl_text[128];
union {
/* Sun standard fields, also used on Linux */
struct {
/* label version */
u_int sli_version;
/* short volume name */
char sli_volume[8];
/* partition count */
u_short sli_nparts;
struct sun_partinfo sli_part[8];
char sli_xxx1[292 - sizeof(u_int) -
(sizeof(char) * 8) - sizeof(u_short) -
(sizeof(struct sun_partinfo) * 8)];
} i;
/* BSD-specific extensions */
struct {
/* additive cksum, [xl_xpmag,sl_xx1) */
u_int slx_xpsum;
/* "extended" magic number */
u_int slx_xpmag;
/* "extended" partitions, i through p */
struct sun_dkpart slx_xpart[SUNXPART];
u_char slx_types[MAXPARTITIONS];
u_int8_t slx_fragblock[MAXPARTITIONS];
u_int16_t slx_cpg[MAXPARTITIONS];
char slx_xxx1[292 - sizeof(u_int) -
sizeof(u_int) -
(sizeof(struct sun_dkpart) *
SUNXPART) -
(sizeof(u_char) *
MAXPARTITIONS) -
(sizeof(u_int8_t) *
MAXPARTITIONS) -
(sizeof(u_int16_t) *
MAXPARTITIONS)];
} x;
} u;
/* Compatibility */
#define sl_xpsum u.x.slx_xpsum
#define sl_xpmag u.x.slx_xpmag
#define sl_xpart u.x.slx_xpart
#define sl_types u.x.slx_types
#define sl_fragblock u.x.slx_fragblock
#define sl_cpg u.x.slx_cpg
#define sl_xxx1 u.x.slx_xxx1
/* Convenience */
#define sl_version u.i.sli_version
#define sl_volume u.i.sli_volume
#define sl_nparts u.i.sli_nparts
#define sl_ipart u.i.sli_part
#define sl_xxx1i u.i.sli_xxx1
u_short sl_rpm; /* rotational speed */
u_short sl_pcylinders; /* number of physical cyls */
#define sl_pcyl sl_pcylinders /* XXX: old sun3 */
u_short sl_sparespercyl; /* spare sectors per cylinder */
char sl_xxx3[4];
u_short sl_interleave; /* interleave factor */
u_short sl_ncylinders; /* data cylinders */
u_short sl_acylinders; /* alternate cylinders */
u_short sl_ntracks; /* tracks per cylinder */
u_short sl_nsectors; /* sectors per track */
char sl_xxx4[4];
struct sun_dkpart sl_part[8]; /* partition layout */
u_short sl_magic; /* == SUN_DKMAGIC */
u_short sl_cksum; /* xor checksum of all shorts */
};
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