1275680Strasz/*- 2275680Strasz * Copyright (c) 2006 Tobias Reifenberger 3275680Strasz * All rights reserved. 4275680Strasz * 5275680Strasz * Redistribution and use in source and binary forms, with or without 6275680Strasz * modification, are permitted provided that the following conditions 7275680Strasz * are met: 8275680Strasz * 1. Redistributions of source code must retain the above copyright 9275680Strasz * notice, this list of conditions and the following disclaimer. 10275680Strasz * 2. Redistributions in binary form must reproduce the above copyright 11275680Strasz * notice, this list of conditions and the following disclaimer in the 12275680Strasz * documentation and/or other materials provided with the distribution. 13275680Strasz * 14275680Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15275680Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16275680Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17275680Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18275680Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19275680Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20275680Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21275680Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22275680Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23275680Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24275680Strasz * SUCH DAMAGE. 25275680Strasz * 26275680Strasz * $FreeBSD: releng/10.3/usr.sbin/fstyp/msdosfs.h 275680 2014-12-10 14:14:16Z trasz $ 27275680Strasz */ 28275680Strasz 29275680Strasz#include <sys/types.h> 30275680Strasz 31275680Strasz/* 32275680Strasz * Conversion macros for little endian encoded unsigned integers 33275680Strasz * in byte streams to the local unsigned integer format. 34275680Strasz */ 35275680Strasz#define UINT16BYTES(p) ((uint32_t)((p)[0] + (256*(p)[1]))) 36275680Strasz#define UINT32BYTES(p) ((uint32_t)((p)[0] + (256*(p)[1]) + \ 37275680Strasz (65536*(p)[2]) + (16777216*(p)[3]))) 38275680Strasz 39275680Strasz/* 40275680Strasz * All following structures are according to: 41275680Strasz * 42275680Strasz * Microsoft Extensible Firmware Initiative FAT32 File System Specification 43275680Strasz * FAT: General Overview of On-Disk Format 44275680Strasz * Version 1.03, December 6, 2000 45275680Strasz * Microsoft Corporation 46275680Strasz */ 47275680Strasz 48275680Strasz/* 49275680Strasz * FAT boot sector and boot parameter block for 50275680Strasz * FAT12 and FAT16 volumes 51275680Strasz */ 52275680Strasztypedef struct fat_bsbpb { 53275680Strasz /* common fields */ 54275680Strasz uint8_t BS_jmpBoot[3]; 55275680Strasz uint8_t BS_OEMName[8]; 56275680Strasz uint8_t BPB_BytsPerSec[2]; 57275680Strasz uint8_t BPB_SecPerClus; 58275680Strasz uint8_t BPB_RsvdSecCnt[2]; 59275680Strasz uint8_t BPB_NumFATs; 60275680Strasz uint8_t BPB_RootEntCnt[2]; 61275680Strasz uint8_t BPB_TotSec16[2]; 62275680Strasz uint8_t BPB_Media; 63275680Strasz uint8_t BPB_FATSz16[2]; 64275680Strasz uint8_t BPB_SecPerTrack[2]; 65275680Strasz uint8_t BPB_NumHeads[2]; 66275680Strasz uint8_t BPB_HiddSec[4]; 67275680Strasz uint8_t BPB_TotSec32[4]; 68275680Strasz /* FAT12/FAT16 only fields */ 69275680Strasz uint8_t BS_DrvNum; 70275680Strasz uint8_t BS_Reserved1; 71275680Strasz uint8_t BS_BootSig; 72275680Strasz uint8_t BS_VolID[4]; 73275680Strasz uint8_t BS_VolLab[11]; 74275680Strasz uint8_t BS_FilSysType[8]; 75275680Strasz} FAT_BSBPB; /* 62 bytes */ 76275680Strasz 77275680Strasz/* 78275680Strasz * FAT boot sector and boot parameter block for 79275680Strasz * FAT32 volumes 80275680Strasz */ 81275680Strasztypedef struct fat32_bsbpb { 82275680Strasz /* common fields */ 83275680Strasz uint8_t BS_jmpBoot[3]; 84275680Strasz uint8_t BS_OEMName[8]; 85275680Strasz uint8_t BPB_BytsPerSec[2]; 86275680Strasz uint8_t BPB_SecPerClus; 87275680Strasz uint8_t BPB_RsvdSecCnt[2]; 88275680Strasz uint8_t BPB_NumFATs; 89275680Strasz uint8_t BPB_RootEntCnt[2]; 90275680Strasz uint8_t BPB_TotSec16[2]; 91275680Strasz uint8_t BPB_Media; 92275680Strasz uint8_t BPB_FATSz16[2]; 93275680Strasz uint8_t BPB_SecPerTrack[2]; 94275680Strasz uint8_t BPB_NumHeads[2]; 95275680Strasz uint8_t BPB_HiddSec[4]; 96275680Strasz uint8_t BPB_TotSec32[4]; 97275680Strasz /* FAT32 only fields */ 98275680Strasz uint8_t BPB_FATSz32[4]; 99275680Strasz uint8_t BPB_ExtFlags[2]; 100275680Strasz uint8_t BPB_FSVer[2]; 101275680Strasz uint8_t BPB_RootClus[4]; 102275680Strasz uint8_t BPB_FSInfo[2]; 103275680Strasz uint8_t BPB_BkBootSec[2]; 104275680Strasz uint8_t BPB_Reserved[12]; 105275680Strasz uint8_t BS_DrvNum; 106275680Strasz uint8_t BS_Reserved1; 107275680Strasz uint8_t BS_BootSig; 108275680Strasz uint8_t BS_VolID[4]; 109275680Strasz uint8_t BS_VolLab[11]; 110275680Strasz uint8_t BS_FilSysType[8]; 111275680Strasz} FAT32_BSBPB; /* 90 bytes */ 112275680Strasz 113275680Strasz/* 114275680Strasz * FAT directory entry structure 115275680Strasz */ 116275680Strasz#define FAT_DES_ATTR_READ_ONLY 0x01 117275680Strasz#define FAT_DES_ATTR_HIDDEN 0x02 118275680Strasz#define FAT_DES_ATTR_SYSTEM 0x04 119275680Strasz#define FAT_DES_ATTR_VOLUME_ID 0x08 120275680Strasz#define FAT_DES_ATTR_DIRECTORY 0x10 121275680Strasz#define FAT_DES_ATTR_ARCHIVE 0x20 122275680Strasz#define FAT_DES_ATTR_LONG_NAME (FAT_DES_ATTR_READ_ONLY | \ 123275680Strasz FAT_DES_ATTR_HIDDEN | \ 124275680Strasz FAT_DES_ATTR_SYSTEM | \ 125275680Strasz FAT_DES_ATTR_VOLUME_ID) 126275680Strasz 127275680Strasztypedef struct fat_des { 128275680Strasz uint8_t DIR_Name[11]; 129275680Strasz uint8_t DIR_Attr; 130275680Strasz uint8_t DIR_NTRes; 131275680Strasz uint8_t DIR_CrtTimeTenth; 132275680Strasz uint8_t DIR_CrtTime[2]; 133275680Strasz uint8_t DIR_CrtDate[2]; 134275680Strasz uint8_t DIR_LstAccDate[2]; 135275680Strasz uint8_t DIR_FstClusHI[2]; 136275680Strasz uint8_t DIR_WrtTime[2]; 137275680Strasz uint8_t DIR_WrtDate[2]; 138275680Strasz uint8_t DIR_FstClusLO[2]; 139275680Strasz uint8_t DIR_FileSize[4]; 140275680Strasz} FAT_DES; 141