xref: /freebsd/contrib/file/magic/Magdir/virtual (revision b6cee71de37d56e36dbc118e2d9b03e7cece5709)

#------------------------------------------------------------------------------
# $File: virtual,v 1.6 2014/05/07 21:25:41 christos Exp $
# From: James Nobis <quel@quelrod.net>
# Microsoft hard disk images for:
# Virtual Server
# Virtual PC
# http://technet.microsoft.com/en-us/virtualserver/bb676673.aspx
# .vhd
0	string	conectix	Microsoft Disk Image, Virtual Server or Virtual PC

# libvirt
# From: Philipp Hahn <hahn@univention.de>
0	string	LibvirtQemudSave	Libvirt QEMU Suspend Image
>0x10	lelong	x	\b, version %u
>0x14	lelong	x	\b, XML length %u
>0x18	lelong	1	\b, running
>0x1c	lelong	1	\b, compressed

0	string	LibvirtQemudPart	Libvirt QEMU partial Suspend Image
# From: Alex Beregszaszi <alex@fsn.hu>
0	string/b	COWD		VMWare3
>4	byte	3		disk image
>>32	lelong	x		(%d/
>>36	lelong	x		\b%d/
>>40	lelong	x		\b%d)
>4	byte	2		undoable disk image
>>32	string	>\0		(%s)

0	string/b	VMDK		 VMware4 disk image
0	string/b	KDMV		 VMware4 disk image

#--------------------------------------------------------------------
# Qemu Emulator Images
# Lines written by Friedrich Schwittay (f.schwittay@yousable.de)
# Updated by Adam Buchbinder (adam.buchbinder@gmail.com)
# Made by reading sources, reading documentation, and doing trial and error
# on existing QCOW files
0	string/b	QFI\xFB	QEMU QCOW Image

# Uncomment the following line to display Magic (only used for debugging
# this magic number)
#>0	string/b	x	, Magic: %s

# There are currently 2 Versions: "1" and "2".
# http://www.gnome.org/~markmc/qcow-image-format-version-1.html
>4	belong	1	(v1)

# Using the existence of the Backing File Offset to determine whether
# to read Backing File Information
>>12	belong	 >0	 \b, has backing file (
# Note that this isn't a null-terminated string; the length is actually
# (16.L). Assuming a null-terminated string happens to work usually, but it
# may spew junk until it reaches a \0 in some cases.
>>>(12.L)	 string >\0	\bpath %s

# Modification time of the Backing File
# Really useful if you want to know if your backing
# file is still usable together with this image
>>>>20	bedate >0	\b, mtime %s)
>>>>20	default x	\b)

# Size is stored in bytes in a big-endian u64.
>>24	bequad	x	 \b, %lld bytes

# 1 for AES encryption, 0 for none.
>>36	belong	1	\b, AES-encrypted

# http://www.gnome.org/~markmc/qcow-image-format.html
>4	belong	2	(v2)
# Using the existence of the Backing File Offset to determine whether
# to read Backing File Information
>>8	bequad  >0	 \b, has backing file
# Note that this isn't a null-terminated string; the length is actually
# (16.L). Assuming a null-terminated string happens to work usually, but it
# may spew junk until it reaches a \0 in some cases. Also, since there's no
# .Q modifier, we just use the bottom four bytes as an offset. Note that if
# the file is over 4G, and the backing file path is stored after the first 4G,
# the wrong filename will be printed. (This should be (8.Q), when that syntax
# is introduced.)
>>>(12.L)	 string >\0	(path %s)
>>24	bequad	x	\b, %lld bytes
>>32	belong	1	\b, AES-encrypted

>4	belong	3	(v3)
# Using the existence of the Backing File Offset to determine whether
# to read Backing File Information
>>8	bequad  >0	 \b, has backing file
# Note that this isn't a null-terminated string; the length is actually
# (16.L). Assuming a null-terminated string happens to work usually, but it
# may spew junk until it reaches a \0 in some cases. Also, since there's no
# .Q modifier, we just use the bottom four bytes as an offset. Note that if
# the file is over 4G, and the backing file path is stored after the first 4G,
# the wrong filename will be printed. (This should be (8.Q), when that syntax
# is introduced.)
>>>(12.L)	 string >\0	(path %s)
>>24	bequad	x	\b, %lld bytes
>>32	belong	1	\b, AES-encrypted

>4	default x	(unknown version)

0	string/b	QEVM		QEMU suspend to disk image

# QEMU QED Image
# http://wiki.qemu.org/Features/QED/Specification
0	string/b	QED\0		QEMU QED Image

# VDI Image
# Sun xVM VirtualBox Disk Image
# From: Richard W.M. Jones <rich@annexia.org>
# VirtualBox Disk Image
0x40	ulelong		0xbeda107f	VirtualBox Disk Image
>0x44	uleshort	>0		\b, major %u
>0x46	uleshort	>0		\b, minor %u
>0	string		>\0		(%s)
>368	lequad		x		 \b, %lld bytes

0	string/b	Bochs\ Virtual\ HD\ Image	Bochs disk image,
>32	string	x				type %s,
>48	string	x				subtype %s

0	lelong	0x02468ace			Bochs Sparse disk image