ISO files with Linux
In the Linux world, people usually just mount their ISO images by typing as root :
$ mkdir /mnt/isotmp
$ mount isofile.iso /mnt/isotmp -o loop
And once they’re done, unmount the virtual disk :
$ umount /mnt/isotmp
This can be very annoying.
UNISO
Here’s another solution. This is a script in Perl that I found somewhere.
It uses isofile from the cdrecord-isotools package to extract the ISO file and you don’t need to be root to execute it.
#!/usr/bin/perl# Copyright (C) 2003 Tiago Cogumbreiro## This file is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License as published by# the Free Software Foundation; either version 2 of the License, or# (at your option) any later version.# This file is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# GNU General Public License for more details.# You should have received a copy of the GNU General Public License# along with this file; if not, write to the Free Software# Foundation, Inc., 59 Temple Place, Suite 330, Boston,# MA 02111-1307 USA
use strict;use warnings;our $VERSION = "0.1b";our $ISOINFO = "isoinfo";our $EXTRACT_COMPRESSED_FS = "extract_compressed_fs";our $dest_dir = "";our $iso = "";our $do_chmod = 1;our $do_cloop = 0;our $tmp_iso = "/tmp/$$.iso";
sub usage {print "Usage: $0 [-d ] \n";print "\t-d \tthe destination directory\n";print "\t-m\t\t\tdon't chmod files, usefull when extracting non Rockridge isos\n";print "\t-c\t\t\textract from a cloop file instead of an iso\n";print "\t-t \t\twhen extracting from a cloop we'll need to create a temporary file, define the temporary file with this argument\n";}# converts a string mode to a number modesub cvt_mode {my ($str) = @_;my $ret = 0;if (substr($str, 0, 1) eq "r") {$ret += 4;}if (substr($str, 1, 1) eq "w") {$ret += 2;}if (substr($str, 2, 1) eq "x") {$ret += 1;}return $ret;}# extracts a file from an isosub extract_file {my ($curr_dir, $dest_dir, $line) = @_;print "$line\n";my $mode = substr($line, 0, 10);my $file = substr($line, 67);my $target = $dest_dir.$curr_dir.$file;if((not $file =~ /\. */ or not $file =~ /\.\. */) and substr($mode, 0, 1) ne "d" ) {print "$target\n";if(substr($mode, 0, 1) eq "l") {# create a linkmy($src, $dst) = split(" -> ", $file);print "ln -s $dst $dest_dir$curr_dir$src\n";system "ln -s $dst $dest_dir$curr_dir$src";unless($? == 0) { print "Error while extracting symbolic link\n"; exit 1;}print "$file\n";} else {# Extract a regular filesystem "$ISOINFO -i $iso -x /$curr_dir$file > $target";# Correct mode# Convert string to numeral modemy $real_mod = cvt_mode(substr($mode, 1));$real_mod .= cvt_mode(substr($mode, 4));$real_mod .= cvt_mode(substr($mode, 7));# apply conversion# TODO add the SUI, SGI, sticky# TODO chown# TODO use perl's chmodif ($do_chmod) { system "chmod 0$real_mod $target";}}}}
# Parse argumentswhile ((scalar @ARGV) gt 0) {my $arg = shift(@ARGV);# user don't want to chmodif ($arg eq "-m") {$do_chmod = 0;# we'll be extracting from a cloop file instead} elsif ($arg eq "-c") {$do_cloop = 1;# get the temporary file} elsif ($arg eq "-t") {$arg = shift(@ARGV);
unless($arg) {usage();exit 1;}$tmp_iso = $arg;# user wants to set a destination dir} elsif ($arg eq "-d") {
$arg = shift(@ARGV);
unless($arg) {usage();exit 1;}$dest_dir = $arg;} else {$iso = $arg;}}
unless($iso) {usage();exit 1;}
# If we are extracting from a cloop file we'll need to extract# a temp iso to extract the data from it, unfornatly isoinfo has# no input redirection argif($do_cloop) {system "$EXTRACT_COMPRESSED_FS $iso > $tmp_iso";if($? != 0) {print "Error converting cloop file to iso!\n";exit 1;}$iso = $tmp_iso;}
# Get the file listmy @file_list = split("\n", `$ISOINFO -R -l -i $iso`);
my $curr_dir = "";foreach(@file_list) {# ignore empty lines
# Get the current directoryif(/Directory listing of /) {$curr_dir = substr($_, 22);if($curr_dir) {print("$dest_dir$curr_dir\n");mkdir $dest_dir.$curr_dir;}} elsif ($_) {extract_file($curr_dir, $dest_dir, $_);}}
One day though, it didn’t work on one particular ISO file. So I stopped using it and made a script that would work everytime using the mount command.
This new script must be executed as root ( so link it to /usr/bin might be a good idea with ln uniso /usr/bin/uniso) and it will give 777 permissions to the extracted files ( read, write, exe for all users/groups ). Pass the name of the ISO file as argument and it will extract it a new directory.
A directory /mnt/isotmp will also be created.
#!/usr/bin/pythonimport sys, os
isofile = sys.argv[1] # command line argument
# check iso extensionif isofile.find('.iso') == -1: sys.exit('no iso file')
# check if /mnt/isotmp exists and create itif os.path.exists( "/mnt/isotmp" ) == False : os.system('mkdir /mnt/isotmp')
# remove the extension '.iso'folder = isofile[0:isofile.find('.iso')]
isofile = '\'' + isofile + '\'' # add ' 'folder = '\'' + folder + '\'' # add ' '
# mount the iso file to /mnt/isotmp/os.system('mount ' + isofile+ ' /mnt/isotmp -o loop')
# creates a new folder in the current folderos.system( 'mkdir ' + folder )
# copies th mounted directory into the new folderos.system( 'cp -R /mnt/isotmp/* ' + folder )
# changes owner, group, and permissions# username = os.environ['USER']# os.system( 'chown -fhR username ' + folder )# os.system( 'chgrp -fhR username ' + folder )# os.system( 'chmod -R u+w,go-w ' + folder )
os.system( 'chmod -R 777 ' + folder )
# unmount the iso fileos.system( 'umount ' + ' /mnt/isotmp' )
To transform this new uniso script into an iso2tar command-line just add at the end of the program :
os.system( “tar cvf ” + folder + “.tar” + folder )
os.system( ‘chmod -R 777 ‘ + folder + ‘.tar’ )
To transform it into an iso2tar.gz command-line :
os.system( ‘tar cvfz ‘ + folder + ‘.tar.gz’ + folder )
os.system( ‘chmod -R 777 ‘ + folder + ‘.tar.gz’ )
To transform it into an iso2tar.bz2 command-line :
os.system( ‘tar cvfj ‘ + folder + ‘.tar.bz2′ + folder )
os.system( ‘chmod -R 777 ‘ + folder + ‘.tar.bz2′ )
To transform it into an iso2zip command-line :
os.system( ‘zip -r’ + folder + ‘.zip’ + folder )
os.system( ‘chmod -R 777 ‘ + folder + ‘.zip’ )
To transform it into an iso2rar command-line :
Wait, you don’t really want to do that, do you !!
If you know a better way to handle ISO files, please drop a comment ! ( no registration required )
EDIT 1 :
Check out this program : Kiso
Strangely you need to run it as root ( ??? ).
EDIT 2 :
The archiver “File-roller” can extract ISO file. Well, sometimes.
EDIT 3 :
http://www.acetoneteam.org/
Last updated : July 2007
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