disk.h (10710B)
1 /* $Id: //depot/blt/include/blt/disk.h#4 $ 2 ** 3 ** Copyright 1999 Sidney Cammeresi 4 ** All rights reserved. 5 ** 6 ** Redistribution and use in source and binary forms, with or without 7 ** modification, are permitted provided that the following conditions 8 ** are met: 9 ** 1. Redistributions of source code must retain the above copyright 10 ** notice, this list of conditions, and the following disclaimer. 11 ** 2. Redistributions in binary form must reproduce the above copyright 12 ** notice, this list of conditions, and the following disclaimer in the 13 ** documentation and/or other materials provided with the distribution. 14 ** 3. The name of the author may not be used to endorse or promote products 15 ** derived from this software without specific prior written permission. 16 ** 17 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _BLT_DISK_H_ 30 #define _BLT_DISK_H_ 31 32 #include <blt/blkdev.h> 33 34 #define FDISK_TYPE_EMPTY 0x00 35 #define FDISK_TYPE_FAT12 0x01 36 #define FDISK_TYPE_FAT16_SMALL 0x04 37 #define FDISK_TYPE_EXTENDED 0x05 38 #define FDISK_TYPE_FAT16_BIG 0x06 39 #define FDISK_TYPE_NTFS 0x07 40 #define FDISK_TYPE_LINUX_SWAP 0x82 41 #define FDISK_TYPE_EXT2 0x83 42 #define FDISK_TYPE_FREEBSD 0xa5 43 #define FDISK_TYPE_OPENBSD 0xa6 44 #define FDISK_TYPE_BFS 0xeb 45 46 #define FREEBSD_FFS 0x100 47 #define FREEBSD_SWAP 0x101 48 #define OPENBSD_FFS 0x102 49 #define OPENBSD_SWAP 0x103 50 51 typedef struct 52 { 53 unsigned char bootflag; 54 unsigned char start0; 55 unsigned char start1; 56 unsigned char start2; 57 unsigned char type; 58 unsigned char end0; 59 unsigned char end1; 60 unsigned char end2; 61 unsigned int start_sect_num; 62 unsigned int num_sects; 63 } fdisk_partition; 64 65 typedef struct 66 { 67 char name[3]; /* 0, 0a, etc. */ 68 int type; 69 unsigned long long start, size; 70 } partition_t; 71 72 typedef struct 73 { 74 blkdev_t *dev; 75 int numparts; 76 partition_t *partition; 77 } disk_t; 78 79 #ifdef __cplusplus 80 extern "C" { 81 #endif 82 83 disk_t *disk_alloc (blkdev_t *dev); 84 void disk_free (disk_t *disk); 85 const char *disk_partition_name (disk_t *disk, int partition); 86 unsigned long long disk_partition_start (disk_t *disk, int partition); 87 unsigned long long disk_partition_size (disk_t *disk, int partition); 88 unsigned int disk_partition_type (disk_t *disk, int partition); 89 90 #ifdef __cplusplus 91 } 92 #endif 93 94 95 /* 96 * Copyright (c) 1987, 1988, 1993 97 * The Regents of the University of California. All rights reserved. 98 * 99 * Redistribution and use in source and binary forms, with or without 100 * modification, are permitted provided that the following conditions 101 * are met: 102 * 1. Redistributions of source code must retain the above copyright 103 * notice, this list of conditions and the following disclaimer. 104 * 2. Redistributions in binary form must reproduce the above copyright 105 * notice, this list of conditions and the following disclaimer in the 106 * documentation and/or other materials provided with the distribution. 107 * 3. All advertising materials mentioning features or use of this software 108 * must display the following acknowledgement: 109 * This product includes software developed by the University of 110 * California, Berkeley and its contributors. 111 * 4. Neither the name of the University nor the names of its contributors 112 * may be used to endorse or promote products derived from this software 113 * without specific prior written permission. 114 * 115 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 116 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 117 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 118 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 119 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 120 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 121 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 122 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 123 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 124 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 125 * SUCH DAMAGE. 126 * 127 * @(#)disklabel.h 8.2 (Berkeley) 7/10/94 128 */ 129 130 #define NDDATA 5 131 #define NSPARE 5 132 #define BSD_MAXSLICES 16 133 #define BSD_DISKLABEL_MAGIC 0x82564557 134 135 typedef struct 136 { 137 unsigned int d_magic; /* the magic number */ 138 unsigned short d_type; /* drive type */ 139 unsigned short d_subtype; /* controller/d_type specific */ 140 char d_typename[16]; /* type name, e.g. "eagle" */ 141 142 /* 143 * d_packname contains the pack identifier and is returned when 144 * the disklabel is read off the disk or in-core copy. 145 * d_boot0 and d_boot1 are the (optional) names of the 146 * primary (block 0) and secondary (block 1-15) bootstraps 147 * as found in /usr/mdec. These are returned when using 148 * getdiskbyname(3) to retrieve the values from /etc/disktab. 149 */ 150 union 151 { 152 char un_d_packname[16]; /* pack identifier */ 153 struct 154 { 155 char *un_d_boot0; /* primary bootstrap name */ 156 char *un_d_boot1; /* secondary bootstrap name */ 157 } un_b; 158 } d_un; 159 160 /* disk geometry: */ 161 unsigned int d_secsize; /* # of bytes per sector */ 162 unsigned int d_nsectors; /* # of data sectors per track */ 163 unsigned int d_ntracks; /* # of tracks per cylinder */ 164 unsigned int d_ncylinders; /* # of data cylinders per unit */ 165 unsigned int d_secpercyl; /* # of data sectors per cylinder */ 166 unsigned int d_secperunit; /* # of data sectors per unit */ 167 168 /* 169 * Spares (bad sector replacements) below are not counted in 170 * d_nsectors or d_secpercyl. Spare sectors are assumed to 171 * be physical sectors which occupy space at the end of each 172 * track and/or cylinder. 173 */ 174 unsigned short d_sparespertrack; /* # of spare sectors per track */ 175 unsigned short d_sparespercyl; /* # of spare sectors per cylinder */ 176 177 /* 178 * Alternate cylinders include maintenance, replacement, configuration 179 * description areas, etc. 180 */ 181 unsigned int d_acylinders; /* # of alt. cylinders per unit */ 182 183 /* 184 * d_interleave, d_trackskew and d_cylskew describe perturbations 185 * in the media format used to compensate for a slow controller. 186 * Interleave is physical sector interleave, set up by the 187 * formatter or controller when formatting. When interleaving is 188 * in use, logically adjacent sectors are not physically 189 * contiguous, but instead are separated by some number of 190 * sectors. It is specified as the ratio of physical sectors 191 * traversed per logical sector. Thus an interleave of 1:1 192 * implies contiguous layout, while 2:1 implies that logical 193 * sector 0 is separated by one sector from logical sector 1. 194 * d_trackskew is the offset of sector 0 on track N relative to 195 * sector 0 on track N-1 on the same cylinder. Finally, d_cylskew 196 * is the offset of sector 0 on cylinder N relative to sector 0 197 * on cylinder N-1. 198 */ 199 unsigned short d_rpm; /* rotational speed */ 200 unsigned short d_interleave; /* hardware sector interleave */ 201 unsigned short d_trackskew; /* sector 0 skew, per track */ 202 unsigned short d_cylskew; /* sector 0 skew, per cylinder */ 203 unsigned int d_headswitch; /* head switch time, usec */ 204 unsigned int d_trkseek; /* track-to-track seek, usec */ 205 unsigned int d_flags; /* generic flags */ 206 unsigned int d_drivedata[NDDATA]; /* drive-type specific information */ 207 unsigned int d_spare[NSPARE]; /* reserved for future use */ 208 unsigned int d_magic2; /* the magic number (again) */ 209 unsigned short d_checksum; /* xor of data incl. partitions */ 210 211 /* filesystem and partition information: */ 212 unsigned short d_npartitions; /* number of partitions in following */ 213 unsigned int d_bbsize; /* size of boot area at sn0, bytes */ 214 unsigned int d_sbsize; /* max size of fs superblock, bytes */ 215 216 struct partition /* the partition table */ 217 { 218 unsigned int p_size; /* number of sectors in partition */ 219 unsigned int p_offset; /* starting sector */ 220 unsigned int p_fsize; /* filesystem basic fragment size */ 221 unsigned char p_fstype; /* filesystem type, see below */ 222 unsigned char p_frag; /* filesystem fragments per block */ 223 union 224 { 225 unsigned short cpg; /* UFS: FS cylinders per group */ 226 unsigned short sgs; /* LFS: FS segment shift */ 227 } p_u1; 228 } d_partitions[BSD_MAXSLICES]; /* actually may be more */ 229 } bsd_disklabel; 230 231 #define BSD_FS_UNUSED 0 /* unused */ 232 #define BSD_FS_SWAP 1 /* swap */ 233 #define BSD_FS_V6 2 /* Sixth Edition */ 234 #define BSD_FS_V7 3 /* Seventh Edition */ 235 #define BSD_FS_SYSV 4 /* System V */ 236 #define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */ 237 #define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */ 238 #define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */ 239 #define BSD_FS_MSDOS 8 /* MSDOS file system */ 240 #define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */ 241 #define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */ 242 #define BSD_FS_HPFS 11 /* OS/2 high-performance file system */ 243 #define BSD_FS_ISO9660 12 /* ISO 9660, normally CD-ROM */ 244 #define BSD_FS_BOOT 13 /* partition contains bootstrap */ 245 #define BSD_FS_ADOS 14 /* AmigaDOS fast file system */ 246 #define BSD_FS_HFS 15 /* Macintosh HFS */ 247 #define BSD_FS_ADFS 16 /* Acorn Disk Filing System */ 248 #define BSD_FS_EXT2FS 17 /* ext2fs */ 249 #define BSD_FS_CCD 18 /* ccd component */ 250 251 #endif 252