1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1987, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)disklabel.h 8.2 (Berkeley) 7/10/94 32 * $FreeBSD$ 33 */ 34 35 #ifndef _SYS_DISKLABEL_H_ 36 #define _SYS_DISKLABEL_H_ 37 38 #ifndef _KERNEL 39 #include <sys/types.h> 40 #endif 41 #include <sys/ioccom.h> 42 43 #include <sys/disk/bsd.h> 44 45 /* Disk description table, see disktab(5) */ 46 #define _PATH_DISKTAB "/etc/disktab" 47 48 /* 49 * The label is in block 0 or 1, possibly offset from the beginning 50 * to leave room for a bootstrap, etc. 51 * XXX these should be defined per controller (or drive) elsewhere, not here! 52 * XXX in actuality it can't even be per controller or drive. It should be 53 * constant/fixed across storage hardware and CPU architectures. Disks can 54 * travel from one machine to another and a label created on one machine 55 * should be detectable and understood by the other. 56 */ 57 #define LABELSECTOR 1 /* sector containing label */ 58 #define LABELOFFSET 0 /* offset of label in sector */ 59 60 #define DISKMAGIC BSD_MAGIC /* The disk magic number */ 61 62 #ifndef MAXPARTITIONS 63 #define MAXPARTITIONS BSD_NPARTS_MIN 64 #endif 65 66 /* Size of bootblock area in sector-size neutral bytes */ 67 #define BBSIZE BSD_BOOTBLOCK_SIZE 68 69 #define LABEL_PART BSD_PART_RAW 70 #define RAW_PART BSD_PART_RAW 71 #define SWAP_PART BSD_PART_SWAP 72 73 #define NDDATA BSD_NDRIVEDATA 74 #define NSPARE BSD_NSPARE 75 76 static __inline u_int16_t dkcksum(struct disklabel *lp); 77 static __inline u_int16_t 78 dkcksum(struct disklabel *lp) 79 { 80 u_int16_t *start, *end; 81 u_int16_t sum = 0; 82 83 start = (u_int16_t *)lp; 84 end = (u_int16_t *)&lp->d_partitions[lp->d_npartitions]; 85 while (start < end) 86 sum ^= *start++; 87 return (sum); 88 } 89 90 #ifdef DKTYPENAMES 91 static const char *dktypenames[] = { 92 "unknown", 93 "SMD", 94 "MSCP", 95 "old DEC", 96 "SCSI", 97 "ESDI", 98 "ST506", 99 "HP-IB", 100 "HP-FL", 101 "type 9", 102 "floppy", 103 "CCD", 104 "Vinum", 105 "DOC2K", 106 "Raid", 107 "?", 108 "jfs", 109 NULL 110 }; 111 #define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1) 112 #endif 113 114 #ifdef FSTYPENAMES 115 static const char *fstypenames[] = { 116 "unused", 117 "swap", 118 "Version 6", 119 "Version 7", 120 "System V", 121 "4.1BSD", 122 "Eighth Edition", 123 "4.2BSD", 124 "MSDOS", 125 "4.4LFS", 126 "unknown", 127 "HPFS", 128 "ISO9660", 129 "boot", 130 "vinum", 131 "raid", 132 "Filecore", 133 "EXT2FS", 134 "NTFS", 135 "?", 136 "ccd", 137 "jfs", 138 "HAMMER", 139 "HAMMER2", 140 "UDF", 141 "?", 142 "EFS", 143 "ZFS", 144 "?", 145 "?", 146 "nandfs", 147 NULL 148 }; 149 #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1) 150 #endif 151 152 /* 153 * NB: <sys/disk.h> defines ioctls from 'd'/128 and up. 154 */ 155 156 /* 157 * Functions for proper encoding/decoding of struct disklabel into/from 158 * bytestring. 159 */ 160 void bsd_partition_le_dec(u_char *ptr, struct partition *d); 161 int bsd_disklabel_le_dec(u_char *ptr, struct disklabel *d, int maxpart); 162 void bsd_partition_le_enc(u_char *ptr, struct partition *d); 163 void bsd_disklabel_le_enc(u_char *ptr, struct disklabel *d); 164 165 #ifndef _KERNEL 166 __BEGIN_DECLS 167 struct disklabel *getdiskbyname(const char *); 168 __END_DECLS 169 #endif 170 171 #endif /* !_SYS_DISKLABEL_H_ */ 172