SCANMACHO(1) Documentation for pax-utils SCANMACHO(1)
NAME
scanmacho - user-space utility to scan Mach-O files
SYNOPSIS
scanmacho [options] Mach-Os or directories
DESCRIPTION
scanmacho is a user-space utility to quickly scan given Mach-Os, directories, or common system paths for different information. This may
include Mach-O types, their install_names, etc...
Because Mach-O files can be "fat", it is possible for a single file to return multiple lines. Each line represents a single architecture,
contained in the fat (universal) file. While there are no real restrictions, in practice, the entries can be distinguished by their arch
type, e.g. ppc, ppc64, i386, x86_64, arm, ...
OPTIONS
-A, --archives
Scan archives (.a files)
-a, --all
Print all useful/simple info
-B, --nobanner
Don't display the header
-b, --bind
Print flags from mach_header
-D, --endian
Print Mach-O endianness
-E, --etype filetype
Print only Mach-O files matching specified etype (like MH_EXECUTABLE, MH_DYLIB, etc...)
-F, --format FORMAT
Use specified format for output; see the FORMAT section for more information.
-f, --from FILE
Read input stream from specified filename
-g, --gmatch
Use strncmp to match libraries (use with -N). Or regexp with symbol matching
-h, --help
Show condensed usage and exit
-i, --interp
Print the interpreter information (LC_LOAD_DYLINKER)
-M, --bits BITS
Print only Mach-O files matching specified numeric bits (like 32/64)
-m, --mount
Don't recursively cross mount points
-N, --lib INSTALLNAME
Find Mach-Os that need the specified INSTALL_NAME
-n, --needed
Print libraries the Mach-O is linked against (LC_LOAD_DYLIB).
-O, --perms PERMS
Print only Mach-O files with matching specified octal bits (like 755).
-o, --file FILE
Write output stream to specified filename.
-p, --path
Scan all directories in PATH environment.
-q, --quiet
Only output 'bad' things.
-R, --recursive
Scan directories recursively
-S, --soname
Print the Mach-O's shared library name (install_name).
-V, --version
Print version and exit
-v, --verbose
Be verbose (can be used more than once)
-y, --symlink
Don't scan symlinks
-Z, --size SIZE
Print Mach-O file size
FORMAT
The format string is much like a printf string in that it is a literal string with flags requesting different information. For example, you
could use a format string and expect the following results.
# scanmacho -BF "file %f needs %n; funky time" /bin/bash
file bash needs /usr/lib/libncurses.5.4.dylib,/usr/lib/libSystem.B.dylib; funky time
Note that when you use a format string, generally information related flags should be omitted. In other words, you do not want to try and
request NEEDED output (-n) and try to specify a format output at the sametime as these operations are mutually exclusive. Each information
related flag has an equivalent conversion specifier, so use those instead. You can of course continue to use non-information related flags
(such as --verbose).
There are three characters that introduce conversion specifiers.
o % - replace with info
o # - silent boolean match
o + - verbose match
And there are a number of conversion specifiers. We try to match up the specifier with corresponding option.
o a - arch type
o b - mach_header flags
o D - endian
o F - long filename
o f - short filename
o i - dyld
o M - CPU_TYPE class
o N - specified needed
o n - needed libraries
o p - filename (minus search)
o o - mh_type
o O - perms
o S - install_name
MACH-O FILETYPES
You can narrow your search by specifying the Mach-O object file type. The commandline option takes the symbolic type name. Multiple values
can be passed comma separated. Example -E MH_EXECUTE,MH_DYLIB
Here is the normal list available for your pleasure.
o MH_OBJECT - intermediate object file (.o)
o MH_EXECUTE - standard executable program
o MH_BUNDLE - dlopen plugin (.bundle)
o MH_DYLIB - dynamic shared library (.dylib)
o MH_PRELOAD - executable not loaded by Mac OS X kernel (ROM)
o MH_CORE - program crash core file
o MH_DYLINKER - dynamic linker shared library (dyld)
o MH_DYLIB_STUB - shared library stub for static only, no sections
o MH_DSYM - debug symbols file (in .dSYM dir)
MACH-O BITS
You can also narrow your search by specifying the Mach-O bitsize. Specify the numeric value.
o 32 - 32bit mach_header
o 64 - 64bit mach_header_64
HOMEPAGE
http://hardened.gentoo.org/pax-utils.xml
REPORTING BUGS
Please include as much information as possible (using any available debugging options) and send bug reports to the maintainers (see the
AUTHORS section). Please use the Gentoo bugzilla at http://bugs.gentoo.org/ if possible.
SEE ALSO
chpax(1), dumpelf(1), paxctl(1), pspax(1), readelf(1), scanelf(1)
AUTHORS
Ned Ludd <solar@gentoo.org>
Maintainer
Mike Frysinger <vapier@gentoo.org>
Maintainer
Fabian Groffen <grobian@gentoo.org>
Mach-O Maintainer
NOTES
1. http://hardened.gentoo.org/pax-utils.xml
2. http://bugs.gentoo.org/
pax-utils 0.2.3 03/03/2011 SCANMACHO(1)