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Annotation of sys/dev/sun/disklabel.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: disklabel.h,v 1.4 2007/05/31 00:30:10 deraadt Exp $   */
                      2: /*     $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $ */
                      3:
                      4: /*
                      5:  * Copyright (c) 1992, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This software was developed by the Computer Systems Engineering group
                      9:  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
                     10:  * contributed to Berkeley.
                     11:  *
                     12:  * All advertising materials mentioning features or use of this software
                     13:  * must display the following acknowledgement:
                     14:  *     This product includes software developed by the University of
                     15:  *     California, Lawrence Berkeley Laboratory.
                     16:  *
                     17:  * Redistribution and use in source and binary forms, with or without
                     18:  * modification, are permitted provided that the following conditions
                     19:  * are met:
                     20:  * 1. Redistributions of source code must retain the above copyright
                     21:  *    notice, this list of conditions and the following disclaimer.
                     22:  * 2. Redistributions in binary form must reproduce the above copyright
                     23:  *    notice, this list of conditions and the following disclaimer in the
                     24:  *    documentation and/or other materials provided with the distribution.
                     25:  * 3. Neither the name of the University nor the names of its contributors
                     26:  *    may be used to endorse or promote products derived from this software
                     27:  *    without specific prior written permission.
                     28:  *
                     29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     39:  * SUCH DAMAGE.
                     40:  *
                     41:  *     @(#)sun_disklabel.h     8.1 (Berkeley) 6/11/93
                     42:  */
                     43:
                     44: /*
                     45:  * SunOS disk label layout (only relevant portions discovered here).
                     46:  */
                     47:
                     48: #define        SUN_DKMAGIC     55998
                     49:
                     50: /* partition info */
                     51: struct sun_dkpart {
                     52:        int     sdkp_cyloffset;         /* starting cylinder */
                     53:        int     sdkp_nsectors;          /* number of sectors */
                     54: };
                     55:
                     56: #define        SUNXPART        8
                     57: #define        SL_XPMAG        (0x199d1fe2+SUNXPART)
                     58: #define        SL_XPMAGTYP     (0x199d1fe2+SUNXPART+1)         /* contains types */
                     59:
                     60: struct sun_disklabel {                 /* total size = 512 bytes */
                     61:        char            sl_text[128];
                     62:        u_int           sl_xpsum;               /* additive cksum, [xl_xpmag,sl_xx1) */
                     63:        u_int           sl_xpmag;               /* "extended" magic number */
                     64:        struct sun_dkpart sl_xpart[SUNXPART];   /* "extended" partitions, i through p */
                     65:        u_char          sl_types[MAXPARTITIONS];
                     66:        u_int8_t        sl_fragblock[MAXPARTITIONS];
                     67:        u_int16_t       sl_cpg[MAXPARTITIONS];
                     68:        char            sl_xxx1[292 - sizeof(u_int) - sizeof(u_int) -
                     69:                            (sizeof(struct sun_dkpart) * SUNXPART) -
                     70:                            sizeof(u_char) * MAXPARTITIONS -
                     71:                            sizeof(u_int8_t) * MAXPARTITIONS -
                     72:                            sizeof(u_int16_t) * MAXPARTITIONS];
                     73:        u_short sl_rpm;                 /* rotational speed */
                     74:        u_short sl_pcylinders;          /* number of physical cyls */
                     75: #define        sl_pcyl  sl_pcylinders          /* XXX: old sun3 */
                     76:        u_short sl_sparespercyl;        /* spare sectors per cylinder */
                     77:        char    sl_xxx3[4];
                     78:        u_short sl_interleave;          /* interleave factor */
                     79:        u_short sl_ncylinders;          /* data cylinders */
                     80:        u_short sl_acylinders;          /* alternate cylinders */
                     81:        u_short sl_ntracks;             /* tracks per cylinder */
                     82:        u_short sl_nsectors;            /* sectors per track */
                     83:        char    sl_xxx4[4];
                     84:        struct sun_dkpart sl_part[8];   /* partition layout */
                     85:        u_short sl_magic;               /* == SUN_DKMAGIC */
                     86:        u_short sl_cksum;               /* xor checksum of all shorts */
                     87: };