file/magic/Magdir/linux

#------------------------------------------------------------------------------
# linux:  file(1) magic for Linux files
#
# Values for Linux/i386 binaries, from Daniel Quinlan <quinlan@yggdrasil.com>
# The following basic Linux magic is useful for reference, but using
# "long" magic is a better practice in order to avoid collisions.
#
# 2	leshort		100		Linux/i386
# >0	leshort		0407		impure executable (OMAGIC)
# >0	leshort		0410		pure executable (NMAGIC)
# >0	leshort		0413		demand-paged executable (ZMAGIC)
# >0	leshort		0314		demand-paged executable (QMAGIC)
#
0	lelong		0x00640107	Linux/i386 impure executable (OMAGIC)
>16	lelong		0		\b, stripped
0	lelong		0x00640108	Linux/i386 pure executable (NMAGIC)
>16	lelong		0		\b, stripped
0	lelong		0x0064010b	Linux/i386 demand-paged executable (ZMAGIC)
>16	lelong		0		\b, stripped
0	lelong		0x006400cc	Linux/i386 demand-paged executable (QMAGIC)
>16	lelong		0		\b, stripped
#
0	string		\007\001\000	Linux/i386 object file
>20	lelong		>0x1020		\b, DLL library
# Linux-8086 stuff:
0	string		\01\03\020\04	Linux-8086 impure executable
>28	long		!0		not stripped
0	string		\01\03\040\04	Linux-8086 executable
>28	long		!0		not stripped
#
0	string		\243\206\001\0	Linux-8086 object file
#
0	string		\01\03\020\20	Minix-386 impure executable
>28	long		!0		not stripped
0	string		\01\03\040\20	Minix-386 executable
>28	long		!0		not stripped
# core dump file, from Bill Reynolds <bill@goshawk.lanl.gov>
216	lelong		0421		Linux/i386 core file
>220	string		>\0		of '%s'
>200	lelong		>0		(signal %d)
#
# LILO boot/chain loaders, from Daniel Quinlan <quinlan@yggdrasil.com>
# this can be overridden by the DOS executable (COM) entry
2	string		LILO		Linux/i386 LILO boot/chain loader
#
# PSF fonts, from H. Peter Anvin <hpa@yggdrasil.com>
0	leshort		0x0436		Linux/i386 PC Screen Font data,
>2	byte		0		256 characters, no directory,
>2	byte		1		512 characters, no directory,
>2	byte		2		256 characters, Unicode directory,
>2	byte		3		512 characters, Unicode directory,
>3	byte		>0		8x%d
# Linux swap file, from Daniel Quinlan <quinlan@yggdrasil.com>
4086	string		SWAP-SPACE	Linux/i386 swap file
# From: Jeff Bailey <jbailey@ubuntu.com>
# Linux swap file with swsusp1 image, from Jeff Bailey <jbailey@ubuntu.com>
4076	string		SWAPSPACE2S1SUSPEND	Linux/i386 swap file (new style) with SWSUSP1 image
# according to man page of mkswap (8) March 1999
4086	string		SWAPSPACE2	Linux/i386 swap file (new style)
>0x400	long		x		%d (4K pages)
>0x404	long		x		size %d pages
# ECOFF magic for OSF/1 and Linux (only tested under Linux though)
#
#	from Erik Troan (ewt@redhat.com) examining od dumps, so this
#		could be wrong
#      updated by David Mosberger (davidm@azstarnet.com) based on
#      GNU BFD and MIPS info found below.
#
0	leshort		0x0183		ECOFF alpha
>24	leshort		0407		executable
>24	leshort		0410		pure
>24	leshort		0413		demand paged
>8	long		>0		not stripped
>8	long		0		stripped
>23	leshort		>0		- version %ld.
#
# Linux kernel boot images, from Albert Cahalan <acahalan@cs.uml.edu>
# and others such as Axel Kohlmeyer <akohlmey@rincewind.chemie.uni-ulm.de>
# and Nicolás Lichtmaier <nick@debian.org>
# All known start with: b8 c0 07 8e d8 b8 00 90 8e c0 b9 00 01 29 f6 29
# Linux kernel boot images (i386 arch) (Wolfram Kleff)
514	string		HdrS		Linux kernel
>510	leshort		0xAA55		x86 boot executable
>>518	leshort		>=3D0x200
>>529	byte		0		zImage,
>>>529	byte		1		bzImage,
>>>(526.s+0x200) string	>\0		version %s,
>>498	leshort		1		RO-rootFS,
>>498	leshort		0		RW-rootFS,
>>508	leshort		>0		root_dev 0x%X,
>>502	leshort		>0		swap_dev 0x%X,
>>504	leshort		>0		RAMdisksize %u KB,
>>506	leshort		0xFFFF		Normal VGA
>>506	leshort		0xFFFE		Extended VGA
>>506	leshort		0xFFFD		Prompt for Videomode
>>506	leshort		>0		Video mode %d
# This also matches new kernels, which were caught above by "HdrS".
0		belong	0xb8c0078e	Linux kernel
>0x1e3		string	Loading		version 1.3.79 or older
>0x1e9		string	Loading		from prehistoric times

# System.map files - Nicolás Lichtmaier <nick@debian.org>
8	string	\ A\ _text	Linux kernel symbol map text

# LSM entries - Nicolás Lichtmaier <nick@debian.org>
0	string	Begin3	Linux Software Map entry text
0	string	Begin4	Linux Software Map entry text (new format)

# From Matt Zimmerman
0       belong  0x4f4f4f4d      User-mode Linux COW file
>4      belong  x               \b, version %d
>8      string  >\0             \b, backing file %s

############################################################################
# Linux kernel versions

0		string		\xb8\xc0\x07\x8e\xd8\xb8\x00\x90	Linux
>497		leshort		0		x86 boot sector
>>514		belong		0x8e	of a kernel from the dawn of time!
>>514		belong		0x908ed8b4	version 0.99-1.1.42
>>514		belong		0x908ed8b8	for memtest86

>497		leshort		!0		x86 kernel
>>504		leshort		>0		RAMdisksize=%u KB
>>502		leshort		>0		swap=0x%X
>>508		leshort		>0		root=0x%X
>>>498		leshort		1		\b-ro
>>>498		leshort		0		\b-rw
>>506		leshort		0xFFFF		vga=normal
>>506		leshort		0xFFFE		vga=extended
>>506		leshort		0xFFFD		vga=ask
>>506		leshort		>0		vga=%d
>>514		belong		0x908ed881	version 1.1.43-1.1.45
>>514		belong		0x15b281cd
>>>0xa8e	belong		0x55AA5a5a	version 1.1.46-1.2.13,1.3.0
>>>0xa99	belong		0x55AA5a5a	version 1.3.1,2
>>>0xaa3	belong		0x55AA5a5a	version 1.3.3-1.3.30
>>>0xaa6	belong		0x55AA5a5a	version 1.3.31-1.3.41
>>>0xb2b	belong		0x55AA5a5a	version 1.3.42-1.3.45
>>>0xaf7	belong		0x55AA5a5a	version 1.3.46-1.3.72
>>514		string		HdrS
>>>518		leshort		>0x1FF
>>>>529		byte		0		\b, zImage
>>>>529		byte		1		\b, bzImage
>>>>(526.s+0x200) string 	>\0		\b, version %s

# Linux boot sector thefts.
0		belong		0xb8c0078e	Linux
>0x1e6		belong		0x454c4b53	ELKS Kernel
>0x1e6		belong		!0x454c4b53	style boot sector

############################################################################
# Linux 8086 executable
0	lelong&0xFF0000FF 0xC30000E9	Linux-Dev86 executable, headerless
>5	string		.		
>>4	string		>\0		\b, libc version %s

0	lelong&0xFF00FFFF 0x4000301	Linux-8086 executable
>2	byte&0x01	!0		\b, unmapped zero page
>2	byte&0x20	0		\b, impure
>2	byte&0x20	!0
>>2	byte&0x10	!0		\b, A_EXEC
>2	byte&0x02	!0		\b, A_PAL
>2	byte&0x04	!0		\b, A_NSYM
>2	byte&0x08	!0		\b, A_STAND
>2	byte&0x40	!0		\b, A_PURE
>2	byte&0x80	!0		\b, A_TOVLY
>28     long            !0              \b, not stripped
>37	string		.		
>>36	string		>\0		\b, libc version %s

# 0	lelong&0xFF00FFFF 0x10000301	ld86 I80386 executable
# 0	lelong&0xFF00FFFF 0xB000301	ld86 M68K executable
# 0	lelong&0xFF00FFFF 0xC000301	ld86 NS16K executable
# 0	lelong&0xFF00FFFF 0x17000301	ld86 SPARC executable

# SYSLINUX boot logo files (from 'ppmtolss16' sources)
# http://syslinux.zytor.com/
#
0	lelong	=0x1413f33d		SYSLINUX' LSS16 image data
>4	leshort	x			\b, width %d
>6	leshort	x			\b, height %d

0	string	OOOM			User-Mode-Linux's Copy-On-Write disk image
>4	belong	x			version %d