usr/src/sys/sparc/sunos/sun_disklabel.h

/*
 * 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. 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.
 *
 *      @(#)sun_disklabel.h     8.1 (Berkeley) 6/11/93
 *
 * from: $Header: sun_disklabel.h,v 1.4 92/06/17 07:04:13 torek Exp $
 */

/*
 * SunOS disk label layout (only relevant portions discovered here).
 */

#define SUN_DKMAGIC     55998

/* These are the guys that Sun's dkinfo needs... */
#define DKIOCGGEOM      _IOR('d', 2, struct sun_dkgeom) /* geometry info */
#define DKIOCINFO       _IOR('d', 8, struct sun_dkctlr) /* controller info */
#define DKIOCGPART      _IOR('d', 4, struct sun_dkpart) /* partition info */

/* geometry info */
struct sun_dkgeom {
        u_short sdkc_ncylinders;        /* data cylinders */
        u_short sdkc_acylinders;        /* alternate cylinders */
        u_short sdkc_xxx1;
        u_short sdkc_ntracks;           /* tracks per cylinder */
        u_short sdkc_xxx2;
        u_short sdkc_nsectors;          /* sectors per track */
        u_short sdkc_interleave;        /* interleave factor */
        u_short sdkc_xxx3;
        u_short sdkc_xxx4;
        u_short sdkc_sparespercyl;      /* spare sectors per cylinder */
        u_short sdkc_rpm;               /* rotational speed */
        u_short sdkc_pcylinders;        /* physical cylinders */
        u_short sdkc_xxx5[7];
};

/* controller info */
struct sun_dkctlr {
        int     sdkc_addr;              /* controller address */
        short   sdkc_unit;              /* unit (slave) address */
        short   sdkc_type;              /* controller type */
        short   sdkc_flags;             /* flags */
};

/* partition info */
struct sun_dkpart {
        long    sdkp_cyloffset;         /* starting cylinder */
        long    sdkp_nsectors;          /* number of sectors */
};

struct sun_disklabel {                  /* total size = 512 bytes */
        char    sl_text[128];
        char    sl_xxx1[292];
        u_short sl_rpm;                 /* rotational speed */
        char    sl_xxx2[2];
        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 */
};

#ifdef KERNEL
/* reads sun label in sector at [cp..cp+511] and sets *lp to BSD label */
int     sun_disklabel __P((caddr_t, struct disklabel *)); /* true on success */

/* compatability dk ioctl's */
int     sun_dkioctl __P((struct dkdevice *, int, caddr_t, int));
#endif