sun_disklabel.h revision 113817
1/* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * All advertising materials mentioning features or use of this software 10 * must display the following acknowledgement: 11 * This product includes software developed by the University of 12 * California, Lawrence Berkeley Laboratory. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * @(#)sun_disklabel.h 8.1 (Berkeley) 6/11/93 43 * $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $ 44 * 45 * $FreeBSD: head/sys/sys/sun_disklabel.h 113817 2003-04-21 19:38:33Z phk $ 46 */ 47 48/* 49 * SunOS disk label layout (only relevant portions discovered here). 50 */ 51 52#define SUN_DKMAGIC 55998 53#define SUN_NPART 8 54#define SUN_RAWPART 2 55#define SUN_SIZE 512 56 57/* geometry info */ 58struct sun_dkgeom { 59 u_short sdkc_ncylinders; /* data cylinders */ 60 u_short sdkc_acylinders; /* alternate cylinders */ 61 u_short sdkc_xxx1; 62 u_short sdkc_ntracks; /* tracks per cylinder */ 63 u_short sdkc_xxx2; 64 u_short sdkc_nsectors; /* sectors per track */ 65 u_short sdkc_interleave; /* interleave factor */ 66 u_short sdkc_xxx3; 67 u_short sdkc_xxx4; 68 u_short sdkc_sparespercyl; /* spare sectors per cylinder */ 69 u_short sdkc_rpm; /* rotational speed */ 70 u_short sdkc_pcylinders; /* physical cylinders */ 71 u_short sdkc_xxx5[7]; 72}; 73 74/* controller info */ 75struct sun_dkctlr { 76 int sdkc_addr; /* controller address */ 77 short sdkc_unit; /* unit (slave) address */ 78 short sdkc_type; /* controller type */ 79 short sdkc_flags; /* flags */ 80}; 81 82/* partition info */ 83struct sun_dkpart { 84 u_int32_t sdkp_cyloffset; /* starting cylinder */ 85 u_int32_t sdkp_nsectors; /* number of sectors */ 86}; 87 88struct sun_disklabel { /* total size = 512 bytes */ 89 char sl_text[128]; 90 char sl_xxx1[292]; 91 u_int16_t sl_rpm; /* rotational speed */ 92 u_int16_t sl_pcylinders; /* number of physical cyls */ 93 u_int16_t sl_sparespercyl; /* spare sectors per cylinder */ 94 char sl_xxx3[4]; 95 u_int16_t sl_interleave; /* interleave factor */ 96 u_int16_t sl_ncylinders; /* data cylinders */ 97 u_int16_t sl_acylinders; /* alternate cylinders */ 98 u_int16_t sl_ntracks; /* tracks per cylinder */ 99 u_int16_t sl_nsectors; /* sectors per track */ 100 char sl_xxx4[4]; 101 struct sun_dkpart sl_part[SUN_NPART]; /* partition layout */ 102 u_int16_t sl_magic; /* == SUN_DKMAGIC */ 103 u_int16_t sl_cksum; /* xor checksum of all shorts */ 104}; 105 106#ifdef CTASSERT 107CTASSERT(sizeof (struct sun_disklabel) == 512); 108#endif 109 110int sunlabel_dec(void const *pp, struct sun_disklabel *sl); 111void sunlabel_enc(void *pp, struct sun_disklabel *sl); 112