1 /* $OpenBSD: disklabel.h,v 1.8 2010/04/25 06:15:17 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 * This describes the format typically found on SPARC systems, but not 47 * that usually seen on SunOS/x86 and SunOS/amd64 systems. 48 */ 49 50 #define SUN_DKMAGIC 55998 51 52 /* partition info */ 53 struct sun_dkpart { 54 u_int sdkp_cyloffset; /* starting cylinder */ 55 u_int sdkp_nsectors; /* number of sectors */ 56 }; 57 58 /* partition types */ 59 struct sun_partinfo { 60 u_short spi_tag; /* filesystem type */ 61 u_short spi_flag; /* flags */ 62 }; 63 64 /* some spi_tag values */ 65 #define SPTAG_EMPTY 0x00 66 #define SPTAG_BOOT 0x01 67 #define SPTAG_SUNOS_ROOT 0x02 68 #define SPTAG_SUNOS_SWAP 0x03 69 #define SPTAG_SUNOS_USR 0x04 70 #define SPTAG_WHOLE_DISK 0x05 71 #define SPTAG_SUNOS_STAND 0x06 72 #define SPTAG_SUNOS_VAR 0x07 73 #define SPTAG_SUNOS_HOME 0x08 74 #define SPTAG_LINUX_SWAP 0x82 75 #define SPTAG_LINUX_EXT2 0x83 76 77 #define SUNXPART 8 78 #define SL_XPMAG (0x199d1fe2+SUNXPART) 79 #define SL_XPMAGTYP (0x199d1fe2+SUNXPART+1) /* contains types */ 80 81 struct sun_disklabel { /* total size = 512 bytes */ 82 char sl_text[128]; 83 u_int sl_xpsum; /* additive cksum, [xl_xpmag,sl_xx1) */ 84 u_int sl_xpmag; /* "extended" magic number */ 85 struct sun_dkpart sl_xpart[SUNXPART]; /* "extended" partitions i..p */ 86 u_char sl_types[MAXPARTITIONS]; 87 u_int8_t sl_fragblock[MAXPARTITIONS]; 88 u_int16_t sl_cpg[MAXPARTITIONS]; 89 u_char sl_uid[8]; /* extension: unique disk label */ 90 char sl_xxx1[292 - sizeof(u_int) - sizeof(u_int) - 91 (sizeof(struct sun_dkpart) * SUNXPART) - 92 sizeof(u_char) * MAXPARTITIONS - 93 sizeof(u_int8_t) * MAXPARTITIONS - 94 sizeof(u_int16_t) * MAXPARTITIONS - 95 sizeof(u_int64_t)]; 96 u_short sl_rpm; /* rotational speed */ 97 u_short sl_pcylinders; /* number of physical cyls */ 98 #define sl_pcyl sl_pcylinders /* XXX: old sun3 */ 99 u_short sl_sparespercyl; /* spare sectors per cylinder */ 100 char sl_xxx3[4]; 101 u_short sl_interleave; /* interleave factor */ 102 u_short sl_ncylinders; /* data cylinders */ 103 u_short sl_acylinders; /* alternate cylinders */ 104 u_short sl_ntracks; /* tracks per cylinder */ 105 u_short sl_nsectors; /* sectors per track */ 106 char sl_xxx4[4]; 107 struct sun_dkpart sl_part[8]; /* partition layout */ 108 u_short sl_magic; /* == SUN_DKMAGIC */ 109 u_short sl_cksum; /* xor checksum of all shorts */ 110 }; 111 112 /* Sun standard fields, also used on Linux. */ 113 struct sun_preamble { 114 char sl_text[128]; 115 u_int sl_version; /* label version */ 116 char sl_volume[8]; /* short volume name */ 117 u_short sl_nparts; /* partition count */ 118 119 struct sun_partinfo sl_part[8]; 120 }; 121