1161246Spjd/*- 2161246Spjd * Copyright (c) 2006 Tobias Reifenberger 3161246Spjd * All rights reserved. 4161246Spjd * 5161246Spjd * Redistribution and use in source and binary forms, with or without 6161246Spjd * modification, are permitted provided that the following conditions 7161246Spjd * are met: 8161246Spjd * 1. Redistributions of source code must retain the above copyright 9161246Spjd * notice, this list of conditions and the following disclaimer. 10161246Spjd * 2. Redistributions in binary form must reproduce the above copyright 11161246Spjd * notice, this list of conditions and the following disclaimer in the 12161246Spjd * documentation and/or other materials provided with the distribution. 13161246Spjd * 14161246Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15161246Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16161246Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17161246Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18161246Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19161246Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20161246Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21161246Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22161246Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23161246Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24161246Spjd * SUCH DAMAGE. 25161246Spjd * 26161246Spjd * $FreeBSD$ 27161246Spjd */ 28161246Spjd 29161246Spjd#include <sys/types.h> 30161246Spjd 31161246Spjd/* 32161246Spjd * Conversion macros for little endian encoded unsigned integers 33161246Spjd * in byte streams to the local unsigned integer format. 34161246Spjd */ 35161246Spjd#define UINT16BYTES(p) ((uint32_t)((p)[0] + (256*(p)[1]))) 36161246Spjd#define UINT32BYTES(p) ((uint32_t)((p)[0] + (256*(p)[1]) + \ 37161246Spjd (65536*(p)[2]) + (16777216*(p)[3]))) 38161246Spjd 39161246Spjd/* 40161246Spjd * All following structures are according to: 41162834Spjd * 42161246Spjd * Microsoft Extensible Firmware Initiative FAT32 File System Specification 43161246Spjd * FAT: General Overview of On-Disk Format 44161246Spjd * Version 1.03, December 6, 2000 45161246Spjd * Microsoft Corporation 46161246Spjd */ 47161246Spjd 48161246Spjd/* 49161246Spjd * FAT boot sector and boot parameter block for 50161246Spjd * FAT12 and FAT16 volumes 51161246Spjd */ 52161246Spjdtypedef struct fat_bsbpb { 53161246Spjd /* common fields */ 54161246Spjd uint8_t BS_jmpBoot[3]; 55161246Spjd uint8_t BS_OEMName[8]; 56161246Spjd uint8_t BPB_BytsPerSec[2]; 57161246Spjd uint8_t BPB_SecPerClus; 58161246Spjd uint8_t BPB_RsvdSecCnt[2]; 59161246Spjd uint8_t BPB_NumFATs; 60161246Spjd uint8_t BPB_RootEntCnt[2]; 61161246Spjd uint8_t BPB_TotSec16[2]; 62161246Spjd uint8_t BPB_Media; 63161246Spjd uint8_t BPB_FATSz16[2]; 64161246Spjd uint8_t BPB_SecPerTrack[2]; 65161246Spjd uint8_t BPB_NumHeads[2]; 66161246Spjd uint8_t BPB_HiddSec[4]; 67161246Spjd uint8_t BPB_TotSec32[4]; 68161246Spjd /* FAT12/FAT16 only fields */ 69161246Spjd uint8_t BS_DrvNum; 70161246Spjd uint8_t BS_Reserved1; 71161246Spjd uint8_t BS_BootSig; 72161246Spjd uint8_t BS_VolID[4]; 73161246Spjd uint8_t BS_VolLab[11]; 74161246Spjd uint8_t BS_FilSysType[8]; 75161246Spjd} FAT_BSBPB; /* 62 bytes */ 76161246Spjd 77162834Spjd/* 78161246Spjd * FAT boot sector and boot parameter block for 79161246Spjd * FAT32 volumes 80161246Spjd */ 81161246Spjdtypedef struct fat32_bsbpb { 82161246Spjd /* common fields */ 83161246Spjd uint8_t BS_jmpBoot[3]; 84161246Spjd uint8_t BS_OEMName[8]; 85161246Spjd uint8_t BPB_BytsPerSec[2]; 86161246Spjd uint8_t BPB_SecPerClus; 87161246Spjd uint8_t BPB_RsvdSecCnt[2]; 88161246Spjd uint8_t BPB_NumFATs; 89161246Spjd uint8_t BPB_RootEntCnt[2]; 90161246Spjd uint8_t BPB_TotSec16[2]; 91161246Spjd uint8_t BPB_Media; 92161246Spjd uint8_t BPB_FATSz16[2]; 93161246Spjd uint8_t BPB_SecPerTrack[2]; 94161246Spjd uint8_t BPB_NumHeads[2]; 95161246Spjd uint8_t BPB_HiddSec[4]; 96161246Spjd uint8_t BPB_TotSec32[4]; 97161246Spjd /* FAT32 only fields */ 98161246Spjd uint8_t BPB_FATSz32[4]; 99161246Spjd uint8_t BPB_ExtFlags[2]; 100161246Spjd uint8_t BPB_FSVer[2]; 101161246Spjd uint8_t BPB_RootClus[4]; 102161246Spjd uint8_t BPB_FSInfo[2]; 103161246Spjd uint8_t BPB_BkBootSec[2]; 104161246Spjd uint8_t BPB_Reserved[12]; 105161246Spjd uint8_t BS_DrvNum; 106161246Spjd uint8_t BS_Reserved1; 107161246Spjd uint8_t BS_BootSig; 108161246Spjd uint8_t BS_VolID[4]; 109161246Spjd uint8_t BS_VolLab[11]; 110161246Spjd uint8_t BS_FilSysType[8]; 111161246Spjd} FAT32_BSBPB; /* 90 bytes */ 112161246Spjd 113162834Spjd/* 114161246Spjd * FAT directory entry structure 115161246Spjd */ 116161246Spjd#define FAT_DES_ATTR_READ_ONLY 0x01 117161246Spjd#define FAT_DES_ATTR_HIDDEN 0x02 118161246Spjd#define FAT_DES_ATTR_SYSTEM 0x04 119161246Spjd#define FAT_DES_ATTR_VOLUME_ID 0x08 120161246Spjd#define FAT_DES_ATTR_DIRECTORY 0x10 121161246Spjd#define FAT_DES_ATTR_ARCHIVE 0x20 122161246Spjd#define FAT_DES_ATTR_LONG_NAME (FAT_DES_ATTR_READ_ONLY | \ 123161246Spjd FAT_DES_ATTR_HIDDEN | \ 124161246Spjd FAT_DES_ATTR_SYSTEM | \ 125161246Spjd FAT_DES_ATTR_VOLUME_ID) 126161246Spjd 127161246Spjdtypedef struct fat_des { 128161246Spjd uint8_t DIR_Name[11]; 129161246Spjd uint8_t DIR_Attr; 130161246Spjd uint8_t DIR_NTRes; 131161246Spjd uint8_t DIR_CrtTimeTenth; 132161246Spjd uint8_t DIR_CrtTime[2]; 133161246Spjd uint8_t DIR_CrtDate[2]; 134161246Spjd uint8_t DIR_LstAccDate[2]; 135161246Spjd uint8_t DIR_FstClusHI[2]; 136161246Spjd uint8_t DIR_WrtTime[2]; 137161246Spjd uint8_t DIR_WrtDate[2]; 138161246Spjd uint8_t DIR_FstClusLO[2]; 139161246Spjd uint8_t DIR_FileSize[4]; 140161246Spjd} FAT_DES; 141