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freebsd-dev/contrib/file/Magdir/filesystems
David E. O'Brien 490143648c Virgin import of Christos Zoulas's FILE 3.41. 
* - fix memory allocation problem (Jeff Johnson)
	* - fix stack overflow corruption (David Endler)
2003-02-28 05:19:36 +00:00

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#------------------------------------------------------------------------------
# filesystems: file(1) magic for different filesystems
#
0 string \366\366\366\366 PC formatted floppy with no filesystem
# Sun disk labels
# From /usr/include/sun/dklabel.h:
0774 beshort 0xdabe Sun disk label
>0 string x '%s
>>31 string >\0 \b%s
>>>63 string >\0 \b%s
>>>>95 string >\0 \b%s
>0 string x \b'
>0734 short >0 %d rpm,
>0736 short >0 %d phys cys,
>0740 short >0 %d alts/cyl,
>0746 short >0 %d interleave,
>0750 short >0 %d data cyls,
>0752 short >0 %d alt cyls,
>0754 short >0 %d heads/partition,
>0756 short >0 %d sectors/track,
>0764 long >0 start cyl %ld,
>0770 long x %ld blocks
# Is there a boot block written 1 sector in?
>512 belong&077777777 0600407 \b, boot block present
0x1FE leshort 0xAA55 x86 boot sector
>2 string OSBS \b, OS/BS MBR
# J\xf6rg Jenderek <joerg.jenderek@gmx.net>
>0x8C string Invalid\ partition\ table \b, MS-DOS MBR
>0x9D string Invalid\ partition\ table \b, DR-DOS MBR, version 7.01 to 7.03
>0x10F string Ung\201ltige\ Partitionstabelle \b, MS-DOS MBR, german version 4.10.1998, 4.10.2222
>0x8B string Ung\201ltige\ Partitionstabelle \b, MS-DOS MBR, german version 5.00 to 4.00.950
>0x145 string Default:\ F \b, FREE-DOS MBR
>0 string \0\0\0\0 \b, extended partition table
# JuMP short bootcodeoffset NOP assembler instructions will usually be EB xx 90
# older drives may use E9 xx xx
>0 lelong&0x009000EB 0x009000EB
>0 lelong&0x000000E9 0x000000E9
>>1 ubyte >37 \b, code offset 0x%x
# mtools-3.9.8/msdos.h
# usual values are marked with comments to get only informations of strange FAT systems
# valid sectorsize are from 32 to 2048
>>>11 uleshort <2049
>>>>11 uleshort >31
>>>>>3 string >\0 \b, OEM-ID "%8.8s"
>>>>>11 uleshort >512 \b, Bytes/sector %u
#>>>>>11 uleshort =512 \b, Bytes/sector %u=512 (usual)
>>>>>11 uleshort <512 \b, Bytes/sector %u
>>>>>13 ubyte >1 \b, sectors/cluster %u
#>>>>>13 ubyte =1 \b, sectors/cluster %u (usual on Floppies)
>>>>>14 uleshort >32 \b, reserved sectors %u
#>>>>>14 uleshort =32 \b, reserved sectors %u (usual Fat32)
#>>>>>14 uleshort >1 \b, reserved sectors %u
#>>>>>14 uleshort =1 \b, reserved sectors %u (usual FAT12,FAT16)
>>>>>14 uleshort <1 \b, reserved sectors %u
>>>>>16 ubyte >2 \b, FATs %u
#>>>>>16 ubyte =2 \b, FATs %u (usual)
>>>>>16 ubyte =1 \b, FAT %u
>>>>>16 ubyte >0
>>>>>17 uleshort >0 \b, root entries %u
#>>>>>17 uleshort =0 \b, root entries %u=0 (usual Fat32)
>>>>>19 uleshort >0 \b, sectors %u (volumes <=32 MB)
#>>>>>19 uleshort =0 \b, sectors %u=0 (usual Fat32)
>>>>>21 ubyte >0xF0 \b, Media descriptor 0x%x
#>>>>>21 ubyte =0xF0 \b, Media descriptor 0x%x (usual floppy)
>>>>>21 ubyte <0xF0 \b, Media descriptor 0x%x
>>>>>22 uleshort >0 \b, sectors/FAT %u
#>>>>>22 uleshort =0 \b, sectors/FAT %u=0 (usual Fat32)
>>>>>26 ubyte >2 \b, heads %u
#>>>>>26 ubyte =2 \b, heads %u (usual floppy)
>>>>>26 ubyte =1 \b, heads %u
>>>>>28 ulelong >0 \b, hidden sectors %u
#>>>>>28 ulelong =0 \b, hidden sectors %u (usual floppy)
>>>>>32 ulelong >0 \b, sectors %u (volumes > 32 MB)
#>>>>>32 ulelong =0 \b, sectors %u (volumes > 32 MB)
# FAT<32 specific
# NOT le FAT3=NOT 3TAF=0xCCABBEB9
>>>>>82 ulelong&0xCCABBEB9 >0
>>>>>>36 ubyte >0x80 \b, physical drive 0x%x
#>>>>>>36 ubyte =0x80 \b, physical drive 0x%x=0x80 (usual harddisk)
>>>>>>36 ubyte&0x7F >0 \b, physical drive 0x%x
#>>>>>>36 ubyte =0 \b, physical drive 0x%x=0 (usual floppy)
>>>>>>37 ubyte >0 \b, reserved 0x%x
#>>>>>>37 ubyte =0 \b, reserved 0x%x
>>>>>>38 ubyte >0x29 \b, dos < 4.0 BootSector (0x%x)
>>>>>>38 ubyte <0x29 \b, dos < 4.0 BootSector (0x%x)
>>>>>>38 ubyte =0x29
>>>>>>>39 ulelong x \b, serial number 0x%x
>>>>>>>43 string <NO\ NAME \b, label: "%11.11s"
>>>>>>>43 string >NO\ NAME \b, label: "%11.11s"
>>>>>>>43 string =NO\ NAME \b, unlabeled
>>>>>>54 string FAT1 \b, FAT
>>>>>>>54 string FAT12 \b (12 bit)
>>>>>>>54 string FAT16 \b (16 bit)
# FAT32 specific
>>>>>82 string FAT32 \b, FAT (32 bit)
>>>>>>36 ulelong x \b, sectors/FAT %u
>>>>>>40 uleshort >0 \b, extension flags %u
#>>>>>>40 uleshort =0 \b, extension flags %u
>>>>>>42 uleshort >0 \b, fsVersion %u
#>>>>>>42 uleshort =0 \b, fsVersion %u (usual)
>>>>>>44 ulelong >2 \b, rootdir cluster %u
#>>>>>>44 ulelong =2 \b, rootdir cluster %u
#>>>>>>44 ulelong =1 \b, rootdir cluster %u
>>>>>>48 uleshort >1 \b, infoSector %u
#>>>>>>48 uleshort =1 \b, infoSector %u (usual)
>>>>>>48 uleshort <1 \b, infoSector %u
>>>>>>50 uleshort >6 \b, Backup boot sector %u
#>>>>>>50 uleshort =6 \b, Backup boot sector %u (usual)
>>>>>>50 uleshort <6 \b, Backup boot sector %u
>>>>>>54 ulelong >0 \b, reserved1 0x%x
>>>>>>58 ulelong >0 \b, reserved2 0x%x
>>>>>>62 ulelong >0 \b, reserved3 0x%x
# same structure as FAT1X
>>>>>>64 ubyte >0x80 \b, physical drive 0x%x
#>>>>>>64 ubyte =0x80 \b, physical drive 0x%x=80 (usual harddisk)
>>>>>>64 ubyte&0x7F >0 \b, physical drive 0x%x
#>>>>>>64 ubyte =0 \b, physical drive 0x%x=0 (usual floppy)
>>>>>>65 ubyte >0 \b, reserved 0x%x
>>>>>>66 ubyte >0x29 \b, dos < 4.0 BootSector (0x%x)
>>>>>>66 ubyte <0x29 \b, dos < 4.0 BootSector (0x%x)
>>>>>>66 ubyte =0x29
>>>>>>>67 ulelong x \b, serial number 0x%x
>>>>>>>71 string <NO\ NAME \b, label: "%11.11s"
>>>>>>71 string >NO\ NAME \b, label: "%11.11s"
>>>>>>71 string =NO\ NAME \b, unlabeled
### FATs end
>0x200 lelong 0x82564557 \b, BSD disklabel
# Minix filesystems - Juan Cespedes <cespedes@debian.org>
0x410 leshort 0x137f Minix filesystem
0x410 beshort 0x137f Minix filesystem (big endian),
>0x402 beshort !0 \b, %d zones
>0x1e string minix \b, bootable
0x410 leshort 0x138f Minix filesystem, 30 char names
0x410 leshort 0x2468 Minix filesystem, version 2
0x410 leshort 0x2478 Minix filesystem, version 2, 30 char names
# romfs filesystems - Juan Cespedes <cespedes@debian.org>
0 string -rom1fs-\0 romfs filesystem, version 1
>8 belong x %d bytes,
>16 string x named %s.
# netboot image - Juan Cespedes <cespedes@debian.org>
0 lelong 0x1b031336L Netboot image,
>4 lelong&0xFFFFFF00 0
>>4 lelong&0x100 0x000 mode 2
>>4 lelong&0x100 0x100 mode 3
>4 lelong&0xFFFFFF00 !0 unknown mode
0x18b string OS/2 OS/2 Boot Manager
9564 lelong 0x00011954 Unix Fast File system (little-endian),
>8404 string x last mounted on %s,
#>9504 ledate x last checked at %s,
>8224 ledate x last written at %s,
>8401 byte x clean flag %d,
>8228 lelong x number of blocks %d,
>8232 lelong x number of data blocks %d,
>8236 lelong x number of cylinder groups %d,
>8240 lelong x block size %d,
>8244 lelong x fragment size %d,
>8252 lelong x minimum percentage of free blocks %d,
>8256 lelong x rotational delay %dms,
>8260 lelong x disk rotational speed %drps,
>8320 lelong 0 TIME optimization
>8320 lelong 1 SPACE optimization
9564 belong 0x00011954 Unix Fast File system (big-endian),
>7168 long 0x4c41424c Apple UFS Volume
>>7186 string x named %s,
>>7176 belong x volume label version %d,
>>7180 bedate x created on %s,
>8404 string x last mounted on %s,
#>9504 bedate x last checked at %s,
>8224 bedate x last written at %s,
>8401 byte x clean flag %d,
>8228 belong x number of blocks %d,
>8232 belong x number of data blocks %d,
>8236 belong x number of cylinder groups %d,
>8240 belong x block size %d,
>8244 belong x fragment size %d,
>8252 belong x minimum percentage of free blocks %d,
>8256 belong x rotational delay %dms,
>8260 belong x disk rotational speed %drps,
>8320 belong 0 TIME optimization
>8320 belong 1 SPACE optimization
# ext2/ext3 filesystems - Andreas Dilger <adilger@turbolabs.com>
0x438 leshort 0xEF53 Linux
>0x44c lelong x rev %d
>0x43e leshort x \b.%d
>0x45c lelong ^0x0000004 ext2 filesystem data
>>0x43a leshort ^0x0000001 (mounted or unclean)
>0x45c lelong &0x0000004 ext3 filesystem data
>>0x460 lelong &0x0000004 (needs journal recovery)
>0x43a leshort &0x0000002 (errors)
>0x460 lelong &0x0000001 (compressed)
#>0x460 lelong &0x0000002 (filetype)
#>0x464 lelong &0x0000001 (sparse_super)
>0x464 lelong &0x0000002 (large files)
# SGI disk labels - Nathan Scott <nathans@debian.org>
0 belong 0x0BE5A941 SGI disk label (volume header)
# SGI XFS filesystem - Nathan Scott <nathans@debian.org>
0 belong 0x58465342 SGI XFS filesystem data
>0x4 belong x (blksz=3D%d,
>0x68 beshort x inosz=3D%d,
>0x64 beshort ^0x2004 v1 dirs)
>0x64 beshort &0x2004 v2 dirs)
############################################################################
# Minix-ST kernel floppy
0x800 belong 0x46fc2700 Atari-ST Minix kernel image
>19 string \240\5\371\5\0\011\0\2\0 \b, 720k floppy
>19 string \320\2\370\5\0\011\0\1\0 \b, 360k floppy
############################################################################
# Hmmm, is this a better way of detecting _standard_ floppy images ?
19 string \320\2\360\3\0\011\0\1\0 DOS floppy 360k
>0x1FE leshort 0xAA55 \b, x86 hard disk boot sector
19 string \240\5\371\3\0\011\0\2\0 DOS floppy 720k
>0x1FE leshort 0xAA55 \b, x86 hard disk boot sector
19 string \100\013\360\011\0\022\0\2\0 DOS floppy 1440k
>0x1FE leshort 0xAA55 \b, x86 hard disk boot sector
19 string \240\5\371\5\0\011\0\2\0 DOS floppy 720k, IBM
>0x1FE leshort 0xAA55 \b, x86 hard disk boot sector
19 string \100\013\371\5\0\011\0\2\0 DOS floppy 1440k, mkdosfs
>0x1FE leshort 0xAA55 \b, x86 hard disk boot sector
19 string \320\2\370\5\0\011\0\1\0 Atari-ST floppy 360k
19 string \240\5\371\5\0\011\0\2\0 Atari-ST floppy 720k
# Valid media descriptor bytes for MS-DOS:
#
# Byte Capacity Media Size and Type
# -------------------------------------------------
#
# F0 2.88 MB 3.5-inch, 2-sided, 36-sector
# F0 1.44 MB 3.5-inch, 2-sided, 18-sector
# F9 720K 3.5-inch, 2-sided, 9-sector
# F9 1.2 MB 5.25-inch, 2-sided, 15-sector
# FD 360K 5.25-inch, 2-sided, 9-sector
# FF 320K 5.25-inch, 2-sided, 8-sector
# FC 180K 5.25-inch, 1-sided, 9-sector
# FE 160K 5.25-inch, 1-sided, 8-sector
# FE 250K 8-inch, 1-sided, single-density
# FD 500K 8-inch, 2-sided, single-density
# FE 1.2 MB 8-inch, 2-sided, double-density
# F8 ----- Fixed disk
#
# FC xxxK Apricot 70x1x9 boot disk.
#
# Originally a bitmap:
# xxxxxxx0 Not two sided
# xxxxxxx1 Double sided
# xxxxxx0x Not 8 SPT
# xxxxxx1x 8 SPT
# xxxxx0xx Not Removable drive
# xxxxx1xx Removable drive
# 11111xxx Must be one.
#
# But now it's rather random:
# 111111xx Low density disk
# 00 SS, Not 8 SPT
# 01 DS, Not 8 SPT
# 10 SS, 8 SPT
# 11 DS, 8 SPT
#
# 11111001 Double density 3<> floppy disk, high density 5<>
# 11110000 High density 3<> floppy disk
# 11111000 Hard disk any format
#
# CDROM Filesystems
32769 string CD001 ISO 9660 CD-ROM filesystem data
37633 string CD001 ISO 9660 CD-ROM filesystem data (raw 2352 byte sectors)
32776 string CDROM High Sierra CD-ROM filesystem data
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