/*      $OpenBSD: disklabel.h,v 1.9 2025/11/18 15:24:09 krw 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];
        u_int           sl_xpsum;       /* additive cksum, [xl_xpmag,sl_xx1) */
        u_int           sl_xpmag;       /* "extended" magic number */
        struct sun_dkpart sl_xpart[SUNXPART];   /* "extended" partitions i..p */
        u_char          sl_types[MAXPARTITIONS16];
        u_int8_t        sl_fragblock[MAXPARTITIONS16];
        u_int16_t       sl_cpg[MAXPARTITIONS16];
        u_char          sl_uid[8];      /* extension: unique disk label */
        char            sl_xxx1[292 - sizeof(u_int) - sizeof(u_int) -
                            (sizeof(struct sun_dkpart) * SUNXPART) -
                            sizeof(u_char) * MAXPARTITIONS16 -
                            sizeof(u_int8_t) * MAXPARTITIONS16 -
                            sizeof(u_int16_t) * MAXPARTITIONS16 -
                            sizeof(u_int64_t)];
        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 */
};

/* Sun standard fields, also used on Linux. */
struct sun_preamble {
        char    sl_text[128];
        u_int   sl_version;     /* label version */
        char    sl_volume[8];   /* short volume name */
        u_short sl_nparts;      /* partition count */

        struct sun_partinfo sl_part[8];
};