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 32 #ifndef _SYS_DISKLABEL_H_ 33 #define _SYS_DISKLABEL_H_ 34 35 #ifndef _KERNEL 36 #include <sys/types.h> 37 #endif 38 #include <sys/ioccom.h> 39 40 #include <sys/disk/bsd.h> 41 42 /* Disk description table, see disktab(5) */ 43 #define _PATH_DISKTAB "/etc/disktab" 44 45 /* 46 * The label is in block 0 or 1, possibly offset from the beginning 47 * to leave room for a bootstrap, etc. 48 * XXX these should be defined per controller (or drive) elsewhere, not here! 49 * XXX in actuality it can't even be per controller or drive. It should be 50 * constant/fixed across storage hardware and CPU architectures. Disks can 51 * travel from one machine to another and a label created on one machine 52 * should be detectable and understood by the other. 53 */ 54 #define LABELSECTOR 1 /* sector containing label */ 55 #define LABELOFFSET 0 /* offset of label in sector */ 56 57 #define DISKMAGIC BSD_MAGIC /* The disk magic number */ 58 59 #ifndef MAXPARTITIONS 60 #define MAXPARTITIONS BSD_NPARTS_MIN 61 #endif 62 63 /* Size of bootblock area in sector-size neutral bytes */ 64 #define BBSIZE BSD_BOOTBLOCK_SIZE 65 66 #define LABEL_PART BSD_PART_RAW 67 #define RAW_PART BSD_PART_RAW 68 #define SWAP_PART BSD_PART_SWAP 69 70 #define NDDATA BSD_NDRIVEDATA 71 #define NSPARE BSD_NSPARE 72 73 static __inline u_int16_t dkcksum(struct disklabel *lp); 74 static __inline u_int16_t 75 dkcksum(struct disklabel *lp) 76 { 77 u_int16_t *start, *end; 78 u_int16_t sum = 0; 79 80 start = (u_int16_t *)lp; 81 end = (u_int16_t *)&lp->d_partitions[lp->d_npartitions]; 82 while (start < end) 83 sum ^= *start++; 84 return (sum); 85 } 86 87 #ifdef DKTYPENAMES 88 static const char *dktypenames[] = { 89 "unknown", 90 "SMD", 91 "MSCP", 92 "old DEC", 93 "SCSI", 94 "ESDI", 95 "ST506", 96 "HP-IB", 97 "HP-FL", 98 "type 9", 99 "floppy", 100 "CCD", 101 "Vinum", 102 "DOC2K", 103 "Raid", 104 "?", 105 "jfs", 106 NULL 107 }; 108 #define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1) 109 #endif 110 111 #ifdef FSTYPENAMES 112 static const char *fstypenames[] = { 113 "unused", 114 "swap", 115 "Version 6", 116 "Version 7", 117 "System V", 118 "4.1BSD", 119 "Eighth Edition", 120 "4.2BSD", 121 "MSDOS", 122 "4.4LFS", 123 "unknown", 124 "HPFS", 125 "ISO9660", 126 "boot", 127 "vinum", 128 "raid", 129 "Filecore", 130 "EXT2FS", 131 "NTFS", 132 "?", 133 "ccd", 134 "jfs", 135 "HAMMER", 136 "HAMMER2", 137 "UDF", 138 "?", 139 "EFS", 140 "ZFS", 141 "?", 142 "?", 143 "nandfs", 144 NULL 145 }; 146 #define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1) 147 #endif 148 149 /* 150 * NB: <sys/disk.h> defines ioctls from 'd'/128 and up. 151 */ 152 153 /* 154 * Functions for proper encoding/decoding of struct disklabel into/from 155 * bytestring. 156 */ 157 void bsd_partition_le_dec(u_char *ptr, struct partition *d); 158 int bsd_disklabel_le_dec(u_char *ptr, struct disklabel *d, int maxpart); 159 void bsd_partition_le_enc(u_char *ptr, struct partition *d); 160 void bsd_disklabel_le_enc(u_char *ptr, struct disklabel *d); 161 162 #ifndef _KERNEL 163 __BEGIN_DECLS 164 struct disklabel *getdiskbyname(const char *); 165 __END_DECLS 166 #endif 167 168 #endif /* !_SYS_DISKLABEL_H_ */ 169