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Diffstat (limited to 'usr.sbin/fstyp/msdosfs.h')
| -rw-r--r-- | usr.sbin/fstyp/msdosfs.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/usr.sbin/fstyp/msdosfs.h b/usr.sbin/fstyp/msdosfs.h new file mode 100644 index 000000000000..91fe5967cd03 --- /dev/null +++ b/usr.sbin/fstyp/msdosfs.h @@ -0,0 +1,138 @@ +/*- + * Copyright (c) 2006 Tobias Reifenberger + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/types.h> + +/* + * Conversion macros for little endian encoded unsigned integers + * in byte streams to the local unsigned integer format. + */ +#define UINT16BYTES(p) ((uint32_t)((p)[0] + (256*(p)[1]))) +#define UINT32BYTES(p) ((uint32_t)((p)[0] + (256*(p)[1]) + \ + (65536*(p)[2]) + (16777216*(p)[3]))) + +/* + * All following structures are according to: + * + * Microsoft Extensible Firmware Initiative FAT32 File System Specification + * FAT: General Overview of On-Disk Format + * Version 1.03, December 6, 2000 + * Microsoft Corporation + */ + +/* + * FAT boot sector and boot parameter block for + * FAT12 and FAT16 volumes + */ +typedef struct fat_bsbpb { + /* common fields */ + uint8_t BS_jmpBoot[3]; + uint8_t BS_OEMName[8]; + uint8_t BPB_BytsPerSec[2]; + uint8_t BPB_SecPerClus; + uint8_t BPB_RsvdSecCnt[2]; + uint8_t BPB_NumFATs; + uint8_t BPB_RootEntCnt[2]; + uint8_t BPB_TotSec16[2]; + uint8_t BPB_Media; + uint8_t BPB_FATSz16[2]; + uint8_t BPB_SecPerTrack[2]; + uint8_t BPB_NumHeads[2]; + uint8_t BPB_HiddSec[4]; + uint8_t BPB_TotSec32[4]; + /* FAT12/FAT16 only fields */ + uint8_t BS_DrvNum; + uint8_t BS_Reserved1; + uint8_t BS_BootSig; + uint8_t BS_VolID[4]; + uint8_t BS_VolLab[11]; + uint8_t BS_FilSysType[8]; +} FAT_BSBPB; /* 62 bytes */ + +/* + * FAT boot sector and boot parameter block for + * FAT32 volumes + */ +typedef struct fat32_bsbpb { + /* common fields */ + uint8_t BS_jmpBoot[3]; + uint8_t BS_OEMName[8]; + uint8_t BPB_BytsPerSec[2]; + uint8_t BPB_SecPerClus; + uint8_t BPB_RsvdSecCnt[2]; + uint8_t BPB_NumFATs; + uint8_t BPB_RootEntCnt[2]; + uint8_t BPB_TotSec16[2]; + uint8_t BPB_Media; + uint8_t BPB_FATSz16[2]; + uint8_t BPB_SecPerTrack[2]; + uint8_t BPB_NumHeads[2]; + uint8_t BPB_HiddSec[4]; + uint8_t BPB_TotSec32[4]; + /* FAT32 only fields */ + uint8_t BPB_FATSz32[4]; + uint8_t BPB_ExtFlags[2]; + uint8_t BPB_FSVer[2]; + uint8_t BPB_RootClus[4]; + uint8_t BPB_FSInfo[2]; + uint8_t BPB_BkBootSec[2]; + uint8_t BPB_Reserved[12]; + uint8_t BS_DrvNum; + uint8_t BS_Reserved1; + uint8_t BS_BootSig; + uint8_t BS_VolID[4]; + uint8_t BS_VolLab[11]; + uint8_t BS_FilSysType[8]; +} FAT32_BSBPB; /* 90 bytes */ + +/* + * FAT directory entry structure + */ +#define FAT_DES_ATTR_READ_ONLY 0x01 +#define FAT_DES_ATTR_HIDDEN 0x02 +#define FAT_DES_ATTR_SYSTEM 0x04 +#define FAT_DES_ATTR_VOLUME_ID 0x08 +#define FAT_DES_ATTR_DIRECTORY 0x10 +#define FAT_DES_ATTR_ARCHIVE 0x20 +#define FAT_DES_ATTR_LONG_NAME (FAT_DES_ATTR_READ_ONLY | \ + FAT_DES_ATTR_HIDDEN | \ + FAT_DES_ATTR_SYSTEM | \ + FAT_DES_ATTR_VOLUME_ID) + +typedef struct fat_des { + uint8_t DIR_Name[11]; + uint8_t DIR_Attr; + uint8_t DIR_NTRes; + uint8_t DIR_CrtTimeTenth; + uint8_t DIR_CrtTime[2]; + uint8_t DIR_CrtDate[2]; + uint8_t DIR_LstAccDate[2]; + uint8_t DIR_FstClusHI[2]; + uint8_t DIR_WrtTime[2]; + uint8_t DIR_WrtDate[2]; + uint8_t DIR_FstClusLO[2]; + uint8_t DIR_FileSize[4]; +} FAT_DES; |