magic.print

<B>Digital的Unix操作系统VAX 4.2源码</B>

# @(#)magic.print	4.2      ULTRIX 	2/12/91
#			Copyright (c) 1989,1990 by		
#		Digital Equipment Corporation, Maynard, MA
#			All rights reserved.			
#									
#   This software is furnished under a license and may be used and
#   copied  only  in accordance with the terms of such license and
#   with the  inclusion  of  the  above  copyright  notice.   This
#   software  or  any  other copies thereof may not be provided or
#   otherwise made available to any other person.  No title to and
#   ownership of the software is hereby transferred.		
#
#   This software is  derived  from  software  received  from Bell
#   Laboratories.  Use, duplication, or disclosure is  subject  to
#   restrictions  under  license  agreements  with  AT&T.
#
#   The information in this software is subject to change  without
#   notice  and should not be construed as a commitment by Digital
#   Equipment Corporation.
#
#   Digital assumes no responsibility for the use  or  reliability
#   of its software on equipment which is not supplied by Digital.
#--------------------------------------------------------------------
#	ULTRIX PRINT SYSTEM
# File:		magic.print
# Author:	Adrian Thoms
# Description:
#	Derived from /usr/lib/file/magic for use in file guesser for
#	print filters
# Modification History:
# 26-sep-90 - Adrian Thoms (thoms@wessex)
#	Added additional line to recognise %! as PostScript
#	Standard version insists on PS-Adobe as well
#
# 02-Feb-91 - Adrian Thoms
#	Added the Berkeley ^Y^A string to the list so that it causes
#	output filters to switch into text mode
#
#####################################################################
#
#		Magic File For The file Command
#
#	The fields of each entry in this file are as follows:
#
#	byte offset:  Where magic information is to be found in the
#	file.  This is the number of bytes from the beginning of the
#	file to the first byte of the magic number or string. This may,
#	optionally,  be preceded by a '>' to indicate a continuation
#	line to supply extra information in the printed message.
#
#	value type: The type of the information to be found at the
#	specified byte offset.  Valid types are the following:
#		byte	interpret file data as "unsigned char" type.
#		short	interpret file data as "unsigned short" type.
#		long	interpret file data as "long" type.
#		string	interpret file data as a character(byte) string
#
#	optional operator: How the value specified here should be
#	compared with the data at the desired offset.  Valid operator
#	characters are: =, >, and <.  If none is specified, = is assumed.
#
#	value: The value to match. Numeric values may be decimal, octal,
#	or hex.  Strings values are defined as regular expressions here.
#	The regular expressions used here are extended in two ways from
#	regular expression definition in ed(1).
#	1. Normally unprintable characters may be escaped with '\'.  The
#	special characters \n, \b, \r, and \f are allowed.  An octal
#	representation can also be used to insert any desired byte value
#	(except 0).  Normally, regular expression can not handle such 
#	character values.  Because the backslash is used as an escape
#	character while the regular expression is being read in, normal
#	occurances of a backslash in a regular expression must be escaped
#	with a second backslash ( \( -> \\(, \. -> \\., ...)
#	2. Text found in a file can also be inserted in the printed string
#	with the use of the \\% delimiter.  All text found between these
#	delimiters is substituted into the print string.  See the entries
#	below for script and PostScript files for examples of this usage.
#	Note this is really just a \% delimiter with the backslash escaped.
#	Finally, a word of caution: This regular expression search never
#	terminates until a match is explicitly found or rejected.  (\n is
#	a valid character in the patterns).  Therefore the pattern ".*"
#	should probably never be used here.
#
#	major, minor type: The major and minor file type numbers are
#	not used by the file(1) command.  They will be used in a future
#	release of Ultrix.  Put any small integers in this field.
#
#	string to print: Any desired text string.  Data from the file
#	may be included with the use of continuation lines beginning
#	with a '>'.  Two types of continuation lines are possible,
#	depending on the sign of the byte offset entry.  If the byte offset
#	is positive, the specified data may be printed in the string
#	when requested with an appropriate printf(3) format.  If the offset
#	is a negative number, an internal routine will be called
#	to test if a particular string is necessary and if so, to return
#	it.  The byte offset number is an index to an internal table of
#	routines available for use.  Two such routines are currently
#	defined, both for a.out images:
#
#   Byte offset	  String(s) returned by routine if appropriate
#
#	-1:	["old version 7 style symbol table"]
#	-2:	["setuid "]["setgid "]["sticky "]
#	
########################################################################
#offset	type	operator+value	major, minor type	string to print
#
# Berkeley Print System recognise the ^Y^A suspend instruction and switch
# an output filter into text mode
#
0	string		\031\001	8,9	suspend BSD lpd output filter
#  Various sorts of archives
#
0	long	0177555			14,1	very old pdp11 archive
0	short	0177545			14,2	old pdp11 archive
0	string	^<ar>			14,3	System V archive
0	string	^!<arch>\n__\\.SYMDEF	14,4	archive random library
0	string	^!<arch>\n__________E	14,6	MIPS archive
>20	string	^U			14,6	with mipsucode members
>21	string	^L			14,6	with mipsel members
>21	string	^B			14,6	with mipseb members
>19	string	^L			14,6	and a EL hash table
>19	string	^B			14,6	and a EB hash table
>22	string	^X			14,6	-- out of date
0	string	^!<arch>\n		14,5	archive
#
#  All sorts of scripts (like /bin/sh, /bin/awk, etc.) are identified
#  here.  The second line adds setuid, setgid text if appropriate.
#
0	string	^#![ ]*\\%[^ \n]*\\%	7,4	%s
>-2	long	0			7,4	%sscript
#
#  Various sorts of executable images.  Note how either "POSIX" or "SVID"
#  are chosen based on the value of the second short word.
#
0	short	0407			12,2	VAX executable (object file)
>8	short	>0			12,2	not stripped
0	long	0410			12,3	VAX pure
>-2	long	0			12,3	%sexecutable
>16	long	>0			12,3	not stripped
>-1	long	0			12,3	%s
0	short	0413			12,4	VAX demand paged pure
>2	short	02			12,4	POSIX
>2	short	01			12,4	SVID
>-2	long	0			12,4	%sexecutable
>16	long	>0			12,4	not stripped
>-1	long	0			12,4	%s
0	short	0401			12,1	Ultrix-11 Stand-alone or boot executable
0	short	0430			12,5	Ultrix-11 overlay text kernel executable
0	short	0431			12,6	Ultrix-11 user overlay (separated I&D) executable
0	short	0450			12,7	Ultrix-11 overlay kernel executable
0	short	0451			12,8	Ultrix-11 overlay kernel (separated I&D) executable
#
#  Various sorts of text and data files.
#
0	string	^\01h[0-9][0-9][0-9][0-9][0-9]	7,1	sccsfile
0	string	^#ifndef			7,5	c program
0	string	^070707				7,106	ASCII cpio archive
0	string	^%!				7,11	Unstructured PostScript text
0	string	^%!\\%PS-Adobe-[.0-9]*\\%\n	7,11	PostScript (v%s) text
#
#
0	string	^\0377\0377\0177	11,1	ddis/ddif 
0	string	^\0377\0377\0174	11,9	ddis/dots archive
0	string	^\0377\0377\0176	11,10	ddis/dtif table data
0	string	^\033c\033		11,8	LN03 output
0	string	^\0100\0357		11,2	troff (CAT) output
0	long	04553207		11,3	X image
0	short	017777			11,4	compacted data
0	short	0116437			11,5	compressed data 
0	short	070707			11,106	cpio archive
0	short	017037			11,7	packed data
0	string	^begin\040[0-9]		11,6	uuencoded data
#
#	MIPS magic info follows.  This needs to be integrated the stuff above,
#	but for now I'll do it here so it can be checked out more easily...
#
0	long		0x1010101	11,9	MMDF mailbox
#
#	Sys V type executables - needs to be integrated with the ones above
#	Do we need any of this at all?
#
#0	short		0407		executable
#>8	short		>0		not stripped
#>15	byte		>0		- version %ld
#0	short		0401		unix-rt ldp
#0	short		0405		old overlay
#0	short		0410		pure executable
#>8	short		>0		not stripped
#>15	byte		>0		- version %ld
#0	short		0411		separate I&D
#>8	short		>0		not stripped
#>15	byte		>0		- version %ld
#0	short		0413		demand-paged executable
#>8	short		>0		not stripped
#>15	byte		>0		- version %ld
#0	short		0430		obsolete text-overlay pure
#>8	short		>0		not stripped
#0	short		0431		obsolete text-overlay separate
#>8	short		>0		not stripped
#0	short		0450		text-overlay pure
#>8	short		>0		not stripped
#0	short		0451		text-overlay separate
#>8	short		>0		not stripped
#0	short		0437		pdp11 kernel overlay
#0	short		0570		executable
#>12	long		>0		not stripped
#>22	short		>0		- version %ld
#0	short		0575		pure executable
#>12	long		>0		not stripped
#>22	short		>0		- version %ld
#0	short		0502		basic-16 executable
#>12	long		>0		not stripped
#0	short		0503		basic-16 executable (TV)
#>12	long		>0		not stripped
#0	short		0510		x86 executable
#>12	long		>0		not stripped
#0	short		0511		x86 executable (TV)
#>12	long		>0		not stripped
#0	short		0520		mc68000 executable
#>12	long		>0		not stripped
#0	short		0521		mc68000 executable (TV)
#>12	long		>0		not stripped
#0	short		0550		3b20 executable
#>12	long		>0		not stripped
#0	short		0551		3b20 executable (TV)
#>12	long		>0		not stripped
#0	short		0560		3b5|DMD executable
#>12	long		>0		not stripped
#0	short		0561		3b5|DMD executable (TV)
#>12	long		>0		not stripped
#
# MIPS binary information - Note that version number printing is an
# extreme hack.
#
#0	short		0x0160		mipseb
#>20	short		0407		executable
#>20	short		0410		pure
#>20	short		0413		demand paged
#>8	long		!0		not stripped
#>22	byte		x		- version %ld.
#>23	byte		x		%ld
0	short		0x0162		12,9	mipsel
>20	short		0407		12,9	407
>20	short		0410		12,9	pure
>20	short		0413		12,9	demand paged
>-2	long		0		12,9	%sexecutable
>8	long		>0		12,9	not stripped
>8	long		<0		12,9	not stripped
>23	byte		x		12,9	- version %ld.
>22	byte		x		12,9	%ld
#0	short		0x6001		swapped mipseb
#>20	short		03401		executable
#>20	short		04001		pure
#>20	short		05401		demand paged
#>8	long		!0		not stripped
#>22	byte		x		- version %ld.
#>23	byte		x		%ld
0	short		0x6201		12,10	swapped mipsel
>20	short		03401		12,10	407
>20	short		04001		12,10	pure
>20	short		05401		12,10	demand paged
>-2	long		0		12,10	%sexecutable
>8	long		>0		12,10	not stripped
>8	long		<0		12,10	not stripped
>22	byte		x		12,10	- version %ld.
>23	byte		x		12,10	%ld
0	short		0x180		12,11	mipseb ucode
0	short		0x182		12,12	mipsel ucode