| 1 | /*␊ |
| 2 | * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * The contents of this file constitute Original Code as defined in and␊ |
| 7 | * are subject to the Apple Public Source License Version 2.0 (the␊ |
| 8 | * "License"). You may not use this file except in compliance with the␊ |
| 9 | * License. Please obtain a copy of the License at␊ |
| 10 | * http://www.apple.com/publicsource and read it before using this file.␊ |
| 11 | * ␊ |
| 12 | * This Original Code and all software distributed under the License are␊ |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the␊ |
| 17 | * License for the specific language governing rights and limitations␊ |
| 18 | * under the License.␊ |
| 19 | * ␊ |
| 20 | * @APPLE_LICENSE_HEADER_END@␊ |
| 21 | */␊ |
| 22 | /*␊ |
| 23 | * Written by Paul Popelka (paulp@uts.amdahl.com)␊ |
| 24 | *␊ |
| 25 | * You can do anything you want with this software, just don't say you wrote␊ |
| 26 | * it, and don't remove this notice.␊ |
| 27 | *␊ |
| 28 | * This software is provided "as is".␊ |
| 29 | *␊ |
| 30 | * The author supplies this software to be publicly redistributed on the␊ |
| 31 | * understanding that the author is not responsible for the correct␊ |
| 32 | * functioning of this software in any circumstances and is not liable for␊ |
| 33 | * any damages caused by this software.␊ |
| 34 | *␊ |
| 35 | * October 1992␊ |
| 36 | */␊ |
| 37 | ␊ |
| 38 | /*␊ |
| 39 | * Format of a boot sector. This is the first sector on a DOS floppy disk␊ |
| 40 | * or the fist sector of a partition on a hard disk. But, it is not the␊ |
| 41 | * first sector of a partitioned hard disk.␊ |
| 42 | */␊ |
| 43 | struct bootsector33 {␊ |
| 44 | ␉u_int8_t␉bsJump[3];␉␉/* jump inst E9xxxx or EBxx90 */␊ |
| 45 | ␉int8_t␉␉bsOemName[8];␉␉/* OEM name and version */␊ |
| 46 | ␉int8_t␉␉bsBPB[19];␉␉/* BIOS parameter block */␊ |
| 47 | ␉int8_t␉␉bsDriveNumber;␉␉/* drive number (0x80) */␊ |
| 48 | ␉int8_t␉␉bsBootCode[479];␉/* pad so struct is 512b */␊ |
| 49 | ␉u_int8_t␉bsBootSectSig0;␊ |
| 50 | ␉u_int8_t␉bsBootSectSig1;␊ |
| 51 | #define␉BOOTSIG0␉0x55␊ |
| 52 | #define␉BOOTSIG1␉0xaa␊ |
| 53 | };␊ |
| 54 | ␊ |
| 55 | struct extboot {␊ |
| 56 | ␉int8_t␉␉exDriveNumber;␉␉/* drive number (0x80) */␊ |
| 57 | ␉int8_t␉␉exReserved1;␉␉/* reserved */␊ |
| 58 | ␉int8_t␉␉exBootSignature;␉/* ext. boot signature (0x29) */␊ |
| 59 | #define␉EXBOOTSIG␉0x29␊ |
| 60 | ␉int8_t␉␉exVolumeID[4];␉␉/* volume ID number */␊ |
| 61 | ␉int8_t␉␉exVolumeLabel[11];␉/* volume label */␊ |
| 62 | ␉int8_t␉␉exFileSysType[8];␉/* fs type (FAT12 or FAT16) */␊ |
| 63 | };␊ |
| 64 | ␊ |
| 65 | struct bootsector50 {␊ |
| 66 | ␉u_int8_t␉bsJump[3];␉␉/* jump inst E9xxxx or EBxx90 */␊ |
| 67 | ␉int8_t␉␉bsOemName[8];␉␉/* OEM name and version */␊ |
| 68 | ␉int8_t␉␉bsBPB[25];␉␉/* BIOS parameter block */␊ |
| 69 | ␉int8_t␉␉bsExt[26];␉␉/* Bootsector Extension */␊ |
| 70 | ␉int8_t␉␉bsBootCode[448];␉/* pad so structure is 512b */␊ |
| 71 | ␉u_int8_t␉bsBootSectSig0;␊ |
| 72 | ␉u_int8_t␉bsBootSectSig1;␊ |
| 73 | #define␉BOOTSIG0␉0x55␊ |
| 74 | #define␉BOOTSIG1␉0xaa␊ |
| 75 | };␊ |
| 76 | ␊ |
| 77 | struct bootsector710 {␊ |
| 78 | ␉u_int8_t␉bsJump[3];␉␉/* jump inst E9xxxx or EBxx90 */␊ |
| 79 | ␉int8_t␉␉bsOEMName[8];␉␉/* OEM name and version */␊ |
| 80 | ␉int8_t␉␉bsBPB[53];␉␉/* BIOS parameter block */␊ |
| 81 | ␉int8_t␉␉bsExt[26];␉␉/* Bootsector Extension */␊ |
| 82 | ␉int8_t␉␉bsBootCode[420];␉/* pad so structure is 512b */␊ |
| 83 | ␉u_int8_t␉bsBootSectSig0;␊ |
| 84 | ␉u_int8_t␉bsBootSectSig1;␊ |
| 85 | #define␉BOOTSIG0␉0x55␊ |
| 86 | #define␉BOOTSIG1␉0xaa␊ |
| 87 | };␊ |
| 88 | ␊ |
| 89 | union bootsector {␊ |
| 90 | ␉struct bootsector33 bs33;␊ |
| 91 | ␉struct bootsector50 bs50;␊ |
| 92 | ␉struct bootsector710 bs710;␊ |
| 93 | };␊ |
| 94 | ␊ |
| 95 | ␊ |
| 96 | /* BPB */␊ |
| 97 | ␊ |
| 98 | /*␊ |
| 99 | * BIOS Parameter Block (BPB) for DOS 3.3␊ |
| 100 | */␊ |
| 101 | struct bpb33 {␊ |
| 102 | ␉u_int16_t␉bpbBytesPerSec;␉/* bytes per sector */␊ |
| 103 | ␉u_int8_t␉bpbSecPerClust;␉/* sectors per cluster */␊ |
| 104 | ␉u_int16_t␉bpbResSectors;␉/* number of reserved sectors */␊ |
| 105 | ␉u_int8_t␉bpbFATs;␉/* number of FATs */␊ |
| 106 | ␉u_int16_t␉bpbRootDirEnts;␉/* number of root directory entries */␊ |
| 107 | ␉u_int16_t␉bpbSectors;␉/* total number of sectors */␊ |
| 108 | ␉u_int8_t␉bpbMedia;␉/* media descriptor */␊ |
| 109 | ␉u_int16_t␉bpbFATsecs;␉/* number of sectors per FAT */␊ |
| 110 | ␉u_int16_t␉bpbSecPerTrack;␉/* sectors per track */␊ |
| 111 | ␉u_int16_t␉bpbHeads;␉/* number of heads */␊ |
| 112 | ␉u_int16_t␉bpbHiddenSecs;␉/* number of hidden sectors */␊ |
| 113 | } __attribute__((packed));␊ |
| 114 | ␊ |
| 115 | /*␊ |
| 116 | * BPB for DOS 5.0 The difference is bpbHiddenSecs is a short for DOS 3.3,␊ |
| 117 | * and bpbHugeSectors is not in the 3.3 bpb.␊ |
| 118 | */␊ |
| 119 | struct bpb50 {␊ |
| 120 | ␉u_int16_t␉bpbBytesPerSec;␉/* bytes per sector */␊ |
| 121 | ␉u_int8_t␉bpbSecPerClust;␉/* sectors per cluster */␊ |
| 122 | ␉u_int16_t␉bpbResSectors;␉/* number of reserved sectors */␊ |
| 123 | ␉u_int8_t␉bpbFATs;␉/* number of FATs */␊ |
| 124 | ␉u_int16_t␉bpbRootDirEnts;␉/* number of root directory entries */␊ |
| 125 | ␉u_int16_t␉bpbSectors;␉/* total number of sectors */␊ |
| 126 | ␉u_int8_t␉bpbMedia;␉/* media descriptor */␊ |
| 127 | ␉u_int16_t␉bpbFATsecs;␉/* number of sectors per FAT */␊ |
| 128 | ␉u_int16_t␉bpbSecPerTrack;␉/* sectors per track */␊ |
| 129 | ␉u_int16_t␉bpbHeads;␉/* number of heads */␊ |
| 130 | ␉u_int32_t␉bpbHiddenSecs;␉/* # of hidden sectors */␊ |
| 131 | ␉u_int32_t␉bpbHugeSectors;␉/* # of sectors if bpbSectors == 0 */␊ |
| 132 | } __attribute__((packed));␊ |
| 133 | ␊ |
| 134 | /*␊ |
| 135 | * BPB for DOS 7.10 (FAT32). This one has a few extensions to bpb50.␊ |
| 136 | */␊ |
| 137 | struct bpb710 {␊ |
| 138 | ␉u_int16_t␉bpbBytesPerSec;␉/* bytes per sector */␊ |
| 139 | ␉u_int8_t␉bpbSecPerClust;␉/* sectors per cluster */␊ |
| 140 | ␉u_int16_t␉bpbResSectors;␉/* number of reserved sectors */␊ |
| 141 | ␉u_int8_t␉bpbFATs;␉/* number of FATs */␊ |
| 142 | ␉u_int16_t␉bpbRootDirEnts;␉/* number of root directory entries */␊ |
| 143 | ␉u_int16_t␉bpbSectors;␉/* total number of sectors */␊ |
| 144 | ␉u_int8_t␉bpbMedia;␉/* media descriptor */␊ |
| 145 | ␉u_int16_t␉bpbFATsecs;␉/* number of sectors per FAT */␊ |
| 146 | ␉u_int16_t␉bpbSecPerTrack;␉/* sectors per track */␊ |
| 147 | ␉u_int16_t␉bpbHeads;␉/* number of heads */␊ |
| 148 | ␉u_int32_t␉bpbHiddenSecs;␉/* # of hidden sectors */␊ |
| 149 | ␉u_int32_t␉bpbHugeSectors;␉/* # of sectors if bpbSectors == 0 */␊ |
| 150 | ␉u_int32_t␉bpbBigFATsecs;␉/* like bpbFATsecs for FAT32 */␊ |
| 151 | ␉u_int16_t␉bpbExtFlags;␉/* extended flags: */␊ |
| 152 | #define␉FATNUM␉␉0xf␉␉/* mask for numbering active FAT */␊ |
| 153 | #define␉FATMIRROR␉0x80␉␉/* FAT is mirrored (like it always was) */␊ |
| 154 | ␉u_int16_t␉bpbFSVers;␉/* filesystem version */␊ |
| 155 | #define␉FSVERS␉␉0␉␉/* currently only 0 is understood */␊ |
| 156 | ␉u_int32_t␉bpbRootClust;␉/* start cluster for root directory */␊ |
| 157 | ␉u_int16_t␉bpbFSInfo;␉/* filesystem info structure sector */␊ |
| 158 | ␉u_int16_t␉bpbBackup;␉/* backup boot sector */␊ |
| 159 | ␉/* There is a 12 byte filler here, but we ignore it */␊ |
| 160 | } __attribute__((packed));␊ |
| 161 | ␊ |
| 162 | #if 0␊ |
| 163 | /*␊ |
| 164 | * BIOS Parameter Block (BPB) for DOS 3.3␊ |
| 165 | */␊ |
| 166 | struct byte_bpb33 {␊ |
| 167 | ␉int8_t bpbBytesPerSec[2];␉/* bytes per sector */␊ |
| 168 | ␉int8_t bpbSecPerClust;␉␉/* sectors per cluster */␊ |
| 169 | ␉int8_t bpbResSectors[2];␉/* number of reserved sectors */␊ |
| 170 | ␉int8_t bpbFATs;␉␉␉/* number of FATs */␊ |
| 171 | ␉int8_t bpbRootDirEnts[2];␉/* number of root directory entries */␊ |
| 172 | ␉int8_t bpbSectors[2];␉␉/* total number of sectors */␊ |
| 173 | ␉int8_t bpbMedia;␉␉/* media descriptor */␊ |
| 174 | ␉int8_t bpbFATsecs[2];␉␉/* number of sectors per FAT */␊ |
| 175 | ␉int8_t bpbSecPerTrack[2];␉/* sectors per track */␊ |
| 176 | ␉int8_t bpbHeads[2];␉␉/* number of heads */␊ |
| 177 | ␉int8_t bpbHiddenSecs[2];␉/* number of hidden sectors */␊ |
| 178 | };␊ |
| 179 | ␊ |
| 180 | /*␊ |
| 181 | * BPB for DOS 5.0 The difference is bpbHiddenSecs is a short for DOS 3.3,␊ |
| 182 | * and bpbHugeSectors is not in the 3.3 bpb.␊ |
| 183 | */␊ |
| 184 | struct byte_bpb50 {␊ |
| 185 | ␉int8_t bpbBytesPerSec[2];␉/* bytes per sector */␊ |
| 186 | ␉int8_t bpbSecPerClust;␉␉/* sectors per cluster */␊ |
| 187 | ␉int8_t bpbResSectors[2];␉/* number of reserved sectors */␊ |
| 188 | ␉int8_t bpbFATs;␉␉␉/* number of FATs */␊ |
| 189 | ␉int8_t bpbRootDirEnts[2];␉/* number of root directory entries */␊ |
| 190 | ␉int8_t bpbSectors[2];␉␉/* total number of sectors */␊ |
| 191 | ␉int8_t bpbMedia;␉␉/* media descriptor */␊ |
| 192 | ␉int8_t bpbFATsecs[2];␉␉/* number of sectors per FAT */␊ |
| 193 | ␉int8_t bpbSecPerTrack[2];␉/* sectors per track */␊ |
| 194 | ␉int8_t bpbHeads[2];␉␉/* number of heads */␊ |
| 195 | ␉int8_t bpbHiddenSecs[4];␉/* number of hidden sectors */␊ |
| 196 | ␉int8_t bpbHugeSectors[4];␉/* # of sectors if bpbSectors == 0 */␊ |
| 197 | };␊ |
| 198 | ␊ |
| 199 | /*␊ |
| 200 | * BPB for DOS 7.10 (FAT32). This one has a few extensions to bpb50.␊ |
| 201 | */␊ |
| 202 | struct byte_bpb710 {␊ |
| 203 | ␉u_int8_t bpbBytesPerSec[2];␉/* bytes per sector */␊ |
| 204 | ␉u_int8_t bpbSecPerClust;␉/* sectors per cluster */␊ |
| 205 | ␉u_int8_t bpbResSectors[2];␉/* number of reserved sectors */␊ |
| 206 | ␉u_int8_t bpbFATs;␉␉/* number of FATs */␊ |
| 207 | ␉u_int8_t bpbRootDirEnts[2];␉/* number of root directory entries */␊ |
| 208 | ␉u_int8_t bpbSectors[2];␉␉/* total number of sectors */␊ |
| 209 | ␉u_int8_t bpbMedia;␉␉/* media descriptor */␊ |
| 210 | ␉u_int8_t bpbFATsecs[2];␉␉/* number of sectors per FAT */␊ |
| 211 | ␉u_int8_t bpbSecPerTrack[2];␉/* sectors per track */␊ |
| 212 | ␉u_int8_t bpbHeads[2];␉␉/* number of heads */␊ |
| 213 | ␉u_int8_t bpbHiddenSecs[4];␉/* # of hidden sectors */␊ |
| 214 | ␉u_int8_t bpbHugeSectors[4];␉/* # of sectors if bpbSectors == 0 */␊ |
| 215 | ␉u_int8_t bpbBigFATsecs[4];␉/* like bpbFATsecs for FAT32 */␊ |
| 216 | ␉u_int8_t bpbExtFlags[2];␉/* extended flags: */␊ |
| 217 | ␉u_int8_t bpbFSVers[2];␉␉/* filesystem version */␊ |
| 218 | ␉u_int8_t bpbRootClust[4];␉/* start cluster for root directory */␊ |
| 219 | ␉u_int8_t bpbFSInfo[2];␉␉/* filesystem info structure sector */␊ |
| 220 | ␉u_int8_t bpbBackup[2];␉␉/* backup boot sector */␊ |
| 221 | ␉/* There is a 12 byte filler here, but we ignore it */␊ |
| 222 | };␊ |
| 223 | #endif␊ |
| 224 | ␊ |
| 225 | /*␊ |
| 226 | * FAT32 FSInfo block.␊ |
| 227 | */␊ |
| 228 | struct fsinfo {␊ |
| 229 | ␉u_int8_t fsisig1[4];␊ |
| 230 | ␉u_int8_t fsifill1[480];␊ |
| 231 | ␉u_int8_t fsisig2[4];␊ |
| 232 | ␉u_int8_t fsinfree[4];␊ |
| 233 | ␉u_int8_t fsinxtfree[4];␊ |
| 234 | ␉u_int8_t fsifill2[12];␊ |
| 235 | ␉u_int8_t fsisig3[4];␊ |
| 236 | };␊ |
| 237 | ␊ |
| 238 | ␊ |
| 239 | /* direntry */␊ |
| 240 | ␊ |
| 241 | /*-␊ |
| 242 | * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.␊ |
| 243 | * Copyright (C) 1994, 1995, 1997 TooLs GmbH.␊ |
| 244 | * All rights reserved.␊ |
| 245 | * Original code by Paul Popelka (paulp@uts.amdahl.com) (see above).␊ |
| 246 | *␊ |
| 247 | * Redistribution and use in source and binary forms, with or without␊ |
| 248 | * modification, are permitted provided that the following conditions␊ |
| 249 | * are met:␊ |
| 250 | * 1. Redistributions of source code must retain the above copyright␊ |
| 251 | * notice, this list of conditions and the following disclaimer.␊ |
| 252 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 253 | * notice, this list of conditions and the following disclaimer in the␊ |
| 254 | * documentation and/or other materials provided with the distribution.␊ |
| 255 | * 3. All advertising materials mentioning features or use of this software␊ |
| 256 | * must display the following acknowledgement:␊ |
| 257 | *␉This product includes software developed by TooLs GmbH.␊ |
| 258 | * 4. The name of TooLs GmbH may not be used to endorse or promote products␊ |
| 259 | * derived from this software without specific prior written permission.␊ |
| 260 | *␊ |
| 261 | * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR␊ |
| 262 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES␊ |
| 263 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.␊ |
| 264 | * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,␊ |
| 265 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,␊ |
| 266 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;␊ |
| 267 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,␊ |
| 268 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR␊ |
| 269 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF␊ |
| 270 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
| 271 | */␊ |
| 272 | ␊ |
| 273 | /*␊ |
| 274 | * Structure of a dos directory entry.␊ |
| 275 | */␊ |
| 276 | struct direntry {␊ |
| 277 | ␉u_int8_t␉deName[8];␉/* filename, blank filled */␊ |
| 278 | #define␉SLOT_EMPTY␉0x00␉␉/* slot has never been used */␊ |
| 279 | #define␉SLOT_E5␉␉0x05␉␉/* the real value is 0xe5 */␊ |
| 280 | #define␉SLOT_DELETED␉0xe5␉␉/* file in this slot deleted */␊ |
| 281 | ␉u_int8_t␉deExtension[3];␉/* extension, blank filled */␊ |
| 282 | ␉u_int8_t␉deAttributes;␉/* file attributes */␊ |
| 283 | #define␉ATTR_NORMAL␉0x00␉␉/* normal file */␊ |
| 284 | #define␉ATTR_READONLY␉0x01␉␉/* file is read-only (immutable) */␊ |
| 285 | #define␉ATTR_HIDDEN␉0x02␉␉/* file is hidden */␊ |
| 286 | #define␉ATTR_SYSTEM␉0x04␉␉/* file is a system file */␊ |
| 287 | #define␉ATTR_VOLUME␉0x08␉␉/* entry is a volume label */␊ |
| 288 | #define␉ATTR_DIRECTORY␉0x10␉␉/* entry is a directory name */␊ |
| 289 | #define␉ATTR_ARCHIVE␉0x20␉␉/* file is new or modified */␊ |
| 290 | ␉u_int8_t␉deLowerCase;␉/* NT VFAT lower case flags */␊ |
| 291 | #define␉LCASE_BASE␉0x08␉␉/* filename base in lower case */␊ |
| 292 | #define␉LCASE_EXT␉0x10␉␉/* filename extension in lower case */␊ |
| 293 | ␉u_int8_t␉deCHundredth;␉/* hundredth of seconds in CTime */␊ |
| 294 | ␉u_int8_t␉deCTime[2];␉/* create time */␊ |
| 295 | ␉u_int8_t␉deCDate[2];␉/* create date */␊ |
| 296 | ␉u_int8_t␉deADate[2];␉/* access date */␊ |
| 297 | ␉u_int8_t␉deHighClust[2];␉/* high bytes of cluster number */␊ |
| 298 | ␉u_int16_t␉deMTime;␉/* last update time */␊ |
| 299 | ␉u_int16_t␉deMDate;␉/* last update date */␊ |
| 300 | ␉u_int8_t␉deStartCluster[2]; /* starting cluster of file */␊ |
| 301 | ␉u_int8_t␉deFileSize[4];␉/* size of file in bytes */␊ |
| 302 | };␊ |
| 303 | ␊ |
| 304 | /*␊ |
| 305 | * Structure of a Win95 long name directory entry␊ |
| 306 | */␊ |
| 307 | struct winentry {␊ |
| 308 | ␉u_int8_t␉weCnt;␊ |
| 309 | #define␉WIN_LAST␉0x40␊ |
| 310 | #define␉WIN_CNT␉␉0x3f␊ |
| 311 | ␉u_int8_t␉wePart1[10];␊ |
| 312 | ␉u_int8_t␉weAttributes;␊ |
| 313 | #define␉ATTR_WIN95␉0x0f␊ |
| 314 | ␉u_int8_t␉weReserved1;␊ |
| 315 | ␉u_int8_t␉weChksum;␊ |
| 316 | ␉u_int8_t␉wePart2[12];␊ |
| 317 | ␉u_int16_t␉weReserved2;␊ |
| 318 | ␉u_int8_t␉wePart3[4];␊ |
| 319 | };␊ |
| 320 | #define␉WIN_CHARS␉13␉/* Number of chars per winentry */␊ |
| 321 | ␊ |
| 322 | /*␊ |
| 323 | * Maximum filename length in Win95␊ |
| 324 | * Note: Must be < sizeof(dirent.d_name)␊ |
| 325 | */␊ |
| 326 | #define␉WIN_MAXLEN␉255␊ |
| 327 | ␊ |
| 328 | /*␊ |
| 329 | * This is the format of the contents of the deTime field in the direntry␊ |
| 330 | * structure.␊ |
| 331 | * We don't use bitfields because we don't know how compilers for␊ |
| 332 | * arbitrary machines will lay them out.␊ |
| 333 | */␊ |
| 334 | #define DT_2SECONDS_MASK␉0x1F␉/* seconds divided by 2 */␊ |
| 335 | #define DT_2SECONDS_SHIFT␉0␊ |
| 336 | #define DT_MINUTES_MASK␉␉0x7E0␉/* minutes */␊ |
| 337 | #define DT_MINUTES_SHIFT␉5␊ |
| 338 | #define DT_HOURS_MASK␉␉0xF800␉/* hours */␊ |
| 339 | #define DT_HOURS_SHIFT␉␉11␊ |
| 340 | ␊ |
| 341 | /*␊ |
| 342 | * This is the format of the contents of the deDate field in the direntry␊ |
| 343 | * structure.␊ |
| 344 | */␊ |
| 345 | #define DD_DAY_MASK␉␉0x1F␉/* day of month */␊ |
| 346 | #define DD_DAY_SHIFT␉␉0␊ |
| 347 | #define DD_MONTH_MASK␉␉0x1E0␉/* month */␊ |
| 348 | #define DD_MONTH_SHIFT␉␉5␊ |
| 349 | #define DD_YEAR_MASK␉␉0xFE00␉/* year - 1980 */␊ |
| 350 | #define DD_YEAR_SHIFT␉␉9␊ |
| 351 | ␊ |
| 352 | |
