Add support for --mbr-manager
[grml2usb.git] / grml2usb
index 2c4c1b2..55f24bb 100755 (executable)
--- a/grml2usb
+++ b/grml2usb
-#!/bin/sh
-# Filename:      grml2usb
-# Purpose:       install grml-system to usb-device
-# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
-# Bug-Reports:   see http://grml.org/bugs/
-# License:       This file is licensed under the GPL v2.
-# Latest change: Sam Jän 19 16:57:39 CET 2008 [mika]
-################################################################################
-
-# colors {{{
-  CRE="\r\e[K"
-  NORMAL="\e[0;39m"
-  RED="\e[1;31m"
-  GREEN="\e[1;32m"
-  YELLOW="\e[1;33m"
-  BLUE="\e[1;34m"
-  MAGENTA="\e[1;35m"
-  CYAN="\e[1;36m"
-  WHITE="\e[1;37m"
-# }}}
-
-# usercheck {{{
-  if ! [ -x "$(which syslinux)" ] ; then
-    echo 1>&2 "${RED}Error: syslinux is not available. Please install it before running this script.${NORMAL}" ; exit 2
-  fi
-
-  if [ "$(id -u)" != 0 ];  then
-    echo 1>&2 "${RED}Error: please run this script with uid 0 (root).${NORMAL}" ; exit 1
-  fi
-# }}}
-
-# set variables  {{{
-  if [ -n "$DEBUG" ]; then
-    # set -x
-    debugit(){
-      echo $*
-    }
-  else
-    debugit(){
-      echo >/dev/null
-    }
-  fi
-
-  if [ "$1" = "uninstall" ] ; then
-     UNINSTALL=1
-  fi
-
-  LANG='C'
-  LANGUAGE='C'
-  LC_ALL='C'
-  PROGRAMNAME=${0##*/}
-  VERSION='0.8.0'
-  ISO="$1"
-  DEVICE="$2"
-
-  [ -n "$TMPMNT" ] || TMPMNT='/mnt/test/'
-  [ -d "$TMPMNT" ] || mkdir -p $TMPMNT
-# }}}
-
-# helper functions {{{
-bailout(){
-  echo
-  echo "Exiting - umounting /mnt/test and $DEVICE"
-  umount $TMPMNT 2>/dev/null
-  umount $DEVICE 2>/dev/null
-  exit 2
-}
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+grml2usb
+~~~~~~~~
+
+This script installs a grml system (either a running system or ISO[s]) to a USB device
+
+:copyright: (c) 2009 by Michael Prokop <mika@grml.org>
+:license: GPL v2 or any later version
+:bugreports: http://grml.org/bugs/
+
+"""
+
+from __future__ import with_statement
+from optparse import OptionParser
+from inspect import isroutine, isclass
+import datetime, logging, os, re, subprocess, sys, tempfile, time
+
+# global variables
+PROG_VERSION = "0.9.2(pre2)"
+MOUNTED = set()  # register mountpoints
+TMPFILES = set() # register tmpfiles
+DATESTAMP = time.mktime(datetime.datetime.now().timetuple()) # unique identifier for syslinux.cfg
+
+# cmdline parsing
+USAGE = "Usage: %prog [options] <[ISO[s] | /live/image]> </dev/sdX#>\n\
+\n\
+%prog installs a grml ISO to an USB device to be able to boot from it.\n\
+Make sure you have at least one grml ISO or a running grml system (/live/image),\n\
+syslinux (just run 'aptitude install syslinux' on Debian-based systems)\n\
+and root access. Further information can be found in: man grml2usb"
+
+# pylint: disable-msg=C0103
+parser = OptionParser(usage=USAGE)
+parser.add_option("--bootoptions", dest="bootoptions",
+                  action="store", type="string",
+                  help="use specified bootoptions as default")
+parser.add_option("--bootloader-only", dest="bootloaderonly", action="store_true",
+                  help="do not copy files but just install a bootloader")
+parser.add_option("--copy-only", dest="copyonly", action="store_true",
+                  help="copy files only but do not install bootloader")
+parser.add_option("--dry-run", dest="dryrun", action="store_true",
+                  help="avoid executing commands")
+parser.add_option("--fat16", dest="fat16", action="store_true",
+                  help="format specified partition with FAT16")
+parser.add_option("--force", dest="force", action="store_true",
+                  help="force any actions requiring manual interaction")
+parser.add_option("--grub", dest="grub", action="store_true",
+                  help="install grub bootloader instead of syslinux")
+parser.add_option("--initrd", dest="initrd", action="store", type="string",
+                  help="install specified initrd instead of the default [TODO]")
+parser.add_option("--kernel", dest="kernel", action="store", type="string",
+                  help="install specified kernel instead of the default [TODO]")
+parser.add_option("--lilo", dest="lilo",  action="store", type="string",
+                  help="lilo executable to be used for installing MBR")
+parser.add_option("--mbr-manager", dest="mbrmgr", action="store_true",
+                  help="enable boot manager menu in MBR")
+parser.add_option("--quiet", dest="quiet", action="store_true",
+                  help="do not output anything but just errors on console")
+parser.add_option("--skip-addons", dest="skipaddons", action="store_true",
+                  help="do not install /boot/addons/ files")
+parser.add_option("--skip-mbr", dest="skipmbr", action="store_true",
+                  help="do not install a master boot record (MBR) on the device")
+parser.add_option("--syslinux-mbr", dest="syslinuxmbr", action="store_true",
+                  help="install syslinux master boot record (MBR) instead of default")
+parser.add_option("--squashfs", dest="squashfs", action="store", type="string",
+                  help="install specified squashfs file instead of the default [TODO]")
+parser.add_option("--uninstall", dest="uninstall", action="store_true",
+                  help="remove grml ISO files from specified device [TODO]")
+parser.add_option("--verbose", dest="verbose", action="store_true",
+                  help="enable verbose mode")
+parser.add_option("-v", "--version", dest="version", action="store_true",
+                  help="display version and exit")
+(options, args) = parser.parse_args()
+
+
+class CriticalException(Exception):
+    """Throw critical exception if the exact error is not known but fatal."
+
+    @Exception: message"""
+    pass
+
+
+def cleanup():
+    """Cleanup function to make sure there aren't any mounted devices left behind.
+    """
+
+    logging.info("Cleaning up before exiting...")
+    proc = subprocess.Popen(["sync"])
+    proc.wait()
+
+    try:
+        for device in MOUNTED:
+            unmount(device, "")
+    # ignore: RuntimeError: Set changed size during iteration
+    except RuntimeError:
+        logging.debug('caught expection RuntimeError, ignoring')
+
+
+def register_tmpfile(path):
+    """TODO
+    """
+
+    TMPFILES.add(path)
+
+
+def unregister_tmpfile(path):
+    """TODO
+    """
+
+    if path in TMPFILES:
+        TMPFILES.remove(path)
+
+
+def register_mountpoint(target):
+    """TODO
+    """
+
+    MOUNTED.add(target)
+
+
+def unregister_mountpoint(target):
+    """TODO
+    """
+
+    if target in MOUNTED:
+        MOUNTED.remove(target)
+
+
+def get_function_name(obj):
+    """Helper function for use in execute() to retrive name of a function
+
+    @obj: the function object
+    """
+    if not (isroutine(obj) or isclass(obj)):
+        obj = type(obj)
+    return obj.__module__ + '.' + obj.__name__
+
+
+def execute(f, *exec_arguments):
+    """Wrapper for executing a command. Either really executes
+    the command (default) or when using --dry-run commandline option
+    just displays what would be executed."""
+    # usage: execute(subprocess.Popen, (["ls", "-la"]))
+    # TODO: doesn't work for proc = execute(subprocess.Popen...() -> any ideas?
+    if options.dryrun:
+        # pylint: disable-msg=W0141
+        logging.debug('dry-run only: %s(%s)' % (get_function_name(f), ', '.join(map(repr, exec_arguments))))
+    else:
+        # pylint: disable-msg=W0142
+        return f(*exec_arguments)
+
+
+def is_exe(fpath):
+    """Check whether a given file can be executed
+
+    @fpath: full path to file
+    @return:"""
+    return os.path.exists(fpath) and os.access(fpath, os.X_OK)
+
+
+def which(program):
+    """Check whether a given program is available in PATH
 
-usage()
-{
-  echo 1>&2 "${BLUE}$PROGRAMNAME $VERSION${NORMAL} - install grml-system to usb-device
+    @program: name of executable"""
+    fpath = os.path.split(program)[0]
+    if fpath:
+        if is_exe(program):
+            return program
+    else:
+        for path in os.environ["PATH"].split(os.pathsep):
+            exe_file = os.path.join(path, program)
+            if is_exe(exe_file):
+                return exe_file
 
-This program installs a grml-iso to an usb-device to be able to boot
-from usb. Make sure you have a grml-iso, syslinux (just run
-'apt-get install syslinux' on debian-systems) and root access.
+    return None
 
-Usage:
-  $PROGRAMNAME grml.iso /mount/point
 
-  Notice: /mount/point is the mountpoint set up for your USB device in /etc/fstab
-          /mount/point should not be mounted at the time running $PROGRAMNAME
+def search_file(filename, search_path='/bin' + os.pathsep + '/usr/bin'):
+    """Given a search path, find file
 
-Usage example - install grml-small to usb-device on /mnt/external1:
-  $PROGRAMNAME grml_small_0.4.iso /mnt/external1
+    @filename: name of file to search for
+    @search_path: path where searching for the specified filename"""
+    file_found = 0
+    paths = search_path.split(os.pathsep)
+    current_dir = '' # make pylint happy :)
+    for path in paths:
+        # pylint: disable-msg=W0612
+        for current_dir, directories, files in os.walk(path):
+            if os.path.exists(os.path.join(current_dir, filename)):
+                file_found = 1
+                break
+    if file_found:
+        return os.path.abspath(os.path.join(current_dir, filename))
+    else:
+        return None
 
-Usage example - install currently running grml to usb-device on /mnt/external1:
-  $PROGRAMNAME /cdrom /mnt/external1
 
-Usage example - delete grml-installation from /mnt/external1:
-  $PROGRAMNAME uninstall /mnt/external1
+def check_uid_root():
+    """Check for root permissions"""
+    if not os.geteuid()==0:
+        sys.exit("Error: please run this script with uid 0 (root).")
 
-For more information take a look at http://wiki.grml.org/doku.php?id=usb
-Report bugs, send wishes and feedback to the grml team:
-http://grml.org/bugs/ - contact (at) grml.org
-"
+
+def mkfs_fat16(device):
+    """Format specified device with VFAT/FAT16 filesystem.
+
+    @device: partition that should be formated"""
+
+    # syslinux -d boot/isolinux /dev/sdb1
+    logging.info("Formating partition with fat16 filesystem")
+    logging.debug("mkfs.vfat -F 16 %s" % device)
+    proc = subprocess.Popen(["mkfs.vfat", "-F", "16", device])
+    proc.wait()
+    if proc.returncode != 0:
+        raise Exception("error executing mkfs.vfat")
+
+
+def generate_main_grub2_config(grml_flavour, install_partition, bootoptions):
+    """Generate grub2 configuration for use via grub.cfg
+
+    TODO
+
+    @grml_flavour: name of grml flavour the configuration should be generated for"""
+
+    local_datestamp = DATESTAMP
+
+    return("""\
+## main grub2 configuration - generated by grml2usb [main config generated at: %(local_datestamp)s]
+set default=0
+set timeout=5
+
+insmod fat
+
+insmod png
+if background_image (hd0, %(install_partition)s)/boot/grub/grml.png ; then
+  set color_normal=black/black
+  set color_highlight=magenta/black
+else
+  set menu_color_normal=cyan/blue
+  set menu_color_highlight=white/blue
+fi
+
+menuentry "%(grml_flavour)s (default)" {
+    set root=(hd0,%(install_partition)s)
+    linux   /boot/release/%(grml_flavour)s/linux26 apm=power-off lang=us vga=791 quiet boot=live nomce module=%(grml_flavour)s %(bootoptions)s
+    initrd  /boot/release/%(grml_flavour)s/initrd.gz
 }
 
-notice(){
-  echo "
-Installing grml to $DEVICE should have been successful!
+menuentry "Memory test (memtest86+)" {
+    set root=(hd0,%(install_partition)s)
+    linux   /boot/addons/memtest
+}
 
-Tips:
+menuentry "Grub - all in one image" {
+    set root=(hd0,%(install_partition)s)
+    linux   /boot/addons/memdisk
+    initrd  /boot/addons/allinone.img
+}
+
+menuentry "FreeDOS" {
+    set root=(hd0,%(install_partition)s)
+    linux   /boot/addons/memdisk
+    initrd  /boot/addons/balder10.imz
+}
 
-  Use the usb cheatcode on bootprompt if you experience any problems with
-  booting grml via usb/firewire, so boot with 'grml scandelay' on bootprompt.
-  This adds a 'sleep' while trying to access the usb-stick and the module
-  should have enough time to access it. Using scandeleay=seconds is possible
-  as well, use 'grml scandelay=20' to wait 20 seconds before trying to access
-  the external device with grml on it.
+menuentry "Boot Operating System on first partition of first disk" {
+    set root=(hd0,1)
+    chainloader +1
+}
 
-  Also make sure you have tested all available modes of USB-boot in
-  the BIOS of your computer. Often found as USB-HDD, USB-FDD and
-  USB-ZIP in the bootmenu.
+""" % {'grml_flavour': grml_flavour, 'local_datestamp': local_datestamp, 'bootoptions': bootoptions, 'install_partition': install_partition } )
 
-  Take a look at http://wiki.grml.org/doku.php?id=usb for more information."
+
+def generate_flavour_specific_grub2_config(grml_flavour, install_partition, bootoptions):
+    """Generate grub2 configuration for use via grub.cfg
+
+    TODO
+
+    @grml_flavour: name of grml flavour the configuration should be generated for"""
+
+    local_datestamp = DATESTAMP
+
+    return("""\
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s" {
+    set root=(hd0,%(install_partition)s)
+    linux  /boot/release/%(grml_flavour)s/linux26 apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s %(bootoptions)s
+    initrd /boot/release/%(grml_flavour)s/initrd.gz
 }
 
-info(){
-  echo "${BLUE}$PROGRAMNAME ${VERSION}${NORMAL} - install grml-system to usb-device"
-  echo
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s2ram" {
+    set root=(hd0,%(install_partition)s)
+    linux  /boot/release/%(grml_flavour)s/linux26 apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s toram=%(grml_flavour)s %(bootoptions)s
+    initrd /boot/release/%(grml_flavour)s/initrd.gz
 }
 
-vfat_warning(){
-  DEV=$(echo ${DEVICE%/})
-  TMPDEV=$(grep ${DEV} /etc/fstab | awk '{print $1}')
-  SYSDEV=$(echo ${TMPDEV%/})
-  if [ -x /lib/udev/vol_id ] ; then
-     /lib/udev/vol_id $SYSDEV | grep -q 'FS_TYPE=vfat' || VFAT=1
-     /lib/udev/vol_id $SYSDEV | grep -q 'ID_FS_VERSION=FAT16' || VFAT=1
-  else
-     VFAT=1
-  fi
-  if [ -n "$VFAT" ] ; then
-     echo 'Warning: make sure that your usb-device is preformated with vfat.'
-     echo "If not please run it e.g. via:  mkfs.vfat -F 16 -v $SYSDEV"
-     echo
-  fi
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s-debug" {
+    set root=(hd0,%(install_partition)s)
+    linux /boot/release/%(grml_flavour)s/linux26
+    initrd /boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s debug boot=live initcall_debug%(bootoptions)s
 }
 
-mount_device(){
-  if grep -q ${DEVICE} /proc/mounts ; then
-    echo echo 1>&2 "${WHITE}${DEVICE} already mounted${NORMAL}"
-  else
-    echo -n "Mounting ${DEVICE}: "
-    debugit "debug: mount $DEVICE"
-    mount $DEVICE && echo "${WHITE}done${NORMAL}" || bailout
-  fi
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s-x" {
+    set root=(hd0,%(install_partition)s)
+    linux  /boot/release/%(grml_flavour)s/linux26
+    initrd /boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s startx=wm-ng %(bootoptions)s
 }
 
-mount_iso(){
-  echo -n "Mounting ${ISO} to ${TMPMNT}: "
-  local mount_opts_="-o loop"
-  if [ -d $ISO ]; then
-      mount_opts_="--bind"
-  elif [ -b $ISO ]; then
-      mount_opts_=""
-  fi
-  debugit "debug: mount $mount_opts_ ${ISO} ${TMPMNT}"
-  if mount $mount_opts_ "${ISO}" ${TMPMNT} ; then
-     echo "${WHITE}done${NORMAL}"
-  else
-     echo 1>&2 "${RED}Problem? You got an error saying 'mount: could not find any free loop device'?
-Possible solution: losetup -d /dev/loop/0${NORMAL}"
-    exit 3
-  fi
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s-nofb" {
+    set root=(hd0,%(install_partition)s)
+    linux  /boot/release/%(grml_flavour)s/linux26
+    initrd /boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce quiet module=%(grml_flavour)s vga=normal video=ofonly %(bootoptions)s
 }
 
-unmount(){
-  echo -n "Unmounting ${DEVICE} and ${TMPMNT}: "
-  umount ${TMPMNT}
-  umount ${DEVICE} && echo "done" || echo "failed"
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s-failsafe" {
+    set root=(hd0,%(install_partition)s)
+    linux /boot/release/%(grml_flavour)s/linux26
+    initrd /boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce quiet module=%(grml_flavour)s vga=normal lang=us boot=live noautoconfig atapicd noacpi acpi=off nomodules nofirewire noudev nousb nohotplug noapm nopcmcia maxcpus=1 noscsi noagp nodma ide=nodma noswap nofstab nosound nogpm nosyslog nodhcp nocpu nodisc nomodem xmodule=vesa noraid nolvm %(bootoptions)s
 }
 
-copyit(){
-  echo -n "Installing data from ${ISO} to ${DEVICE} (will take some time): "
-  debugit "debug: cp -dR --preserve=mode,timestamps ${TMPMNT}/* ${DEVICE}"
-  debugit "debug: mv ${DEVICE}/boot/isolinux/* ${DEVICE}/"
-  if cp -dR --preserve=mode,timestamps ${TMPMNT}/* ${DEVICE} ; then
-    echo "# filelist of $PROGRAMNAME on $(date) using $ISO on ${DEVICE}:" > $DEVICE/grml2usb.filelist
-    find  ${TMPMNT} -type f | grep -v isolinux | sed 's#^${TMPMNT}##' | tr A-Z a-z >> $DEVICE/grml2usb.filelist && \
-    find  ${DEVICE}/boot/isolinux -type f | sed 's#.*isolinux/##'      | tr A-Z a-z >> $DEVICE/grml2usb.filelist && \
-    # make sure we have a valid syslinux.cfg, if not use isolinux.cfg as base
-    if ! [ -f "${DEVICE}"/boot/isolinux/syslinux.cfg ] ; then
-       cp ${DEVICE}/boot/isolinux/isolinux.cfg ${DEVICE}/boot/isolinux/syslinux.cfg && \
-       echo 'syslinux.cfg' >> $DEVICE/grml2usb.filelist
-    fi
-
-    if mv ${DEVICE}/boot/isolinux/* ${DEVICE}/ ; then
-       rmdir ${DEVICE}/boot/isolinux
-    fi
-
-    if [ -d "${DEVICE}"/boot/grub ] ; then
-       [ -d "${DEVICE}/grub" ] || mkdir ${DEVICE}/grub
-       mv ${DEVICE}/boot/grub/* ${DEVICE}/grub/
-    fi
-
-    rmdir ${DEVICE}/boot 2>/dev/null
-
-    sync && echo "${WHITE}done${NORMAL}"
-  else
-    unmount
-    return 1
-  fi
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s-forensic" {
+    set root=(hd0,%(install_partition)s)
+    linux /boot/release/%(grml_flavour)s/linux26
+    initrd /boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s nofstab noraid nolvm noautoconfig noswap raid=noautodetect %(bootoptions)s
 }
 
-run_syslinux(){
-  DEV=$(echo ${DEVICE%/})
-  TMPDEV=$(grep ${DEV} /etc/fstab | awk '{print $1}')
-  SYSDEV=$(echo ${TMPDEV%/})
-  echo -n "Running syslinux on ${SYSDEV}: "
-  debugit "debug: syslinux ${SYSDEV}"
-  if syslinux ${SYSDEV} ; then
-     echo "${WHITE}done${NORMAL}"
-  else
-     echo 1>&2 "${RED}Problem when running syslinux?
-Try to call it manually via "syslinux $SYSDEV" if you installed grml to $SYSDEV'${NORMAL}"
-     return 1
-  fi
+## flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+menuentry "%(grml_flavour)s-serial" {
+    set root=(hd0,%(install_partition)s)
+    linux /boot/release/%(grml_flavour)s/linux26
+    initrd /boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce quiet module=%(grml_flavour)s vga=normal video=vesafb:off console=tty1 console=ttyS0,9600n8 %(bootoptions)s
 }
 
-# }}}
+""" % {'grml_flavour': grml_flavour, 'local_datestamp': local_datestamp, 'bootoptions': bootoptions, 'install_partition': install_partition } )
 
-# main program {{{
-trap bailout 1 2 3 15
 
-if [ "$#" != 2 ]; then
-  usage ; exit 4
-fi
+def generate_grub1_config(grml_flavour, install_partition, bootoptions):
+    """Generate grub1 configuration for use via menu.lst
 
-if [ -n "$UNINSTALL" ] ; then
-  echo "${BLUE}$PROGRAMNAME - ${VERSION}${NORMAL}"
-  echo
-  echo "Uninstalling grml from ${DEVICE} based on ${DEVICE}/grml2usb.filelist.${NORMAL}"
-  if mount_device ; then
-     if [ -f ${DEVICE}/grml2usb.filelist ] ; then
-        for file in `cat $DEVICE/grml2usb.filelist | grep -v '^#'` ; do
-          echo -n "removing ${file} on ${DEVICE}: "
-          rm ${DEVICE}/${file} && echo "${WHITE}done${NORMAL}" || echo "${RED}error${NORMAL}"
-        done
-        echo -n "removing directory grml/images/ on ${DEVICE}: "
-        rmdir ${DEVICE}/grml/images/ && echo "${WHITE}done${NORMAL}" || echo "${RED}error${NORMAL}"
-        echo -n "removing directory grml/ on ${DEVICE}: "
-        rmdir ${DEVICE}/grml && echo "${WHITE}done${NORMAL}" || echo "${RED}error${NORMAL}"
-        echo -n "removing filelist grml2usb.filelist on ${DEVICE}: "
-        rm ${DEVICE}/grml2usb.filelist && echo "${WHITE}done${NORMAL}" || echo "${RED}error${NORMAL}"
-        echo -n "Unmounting ${DEVICE}:"
-        umount $DEVICE && echo "${WHITE}done${NORMAL}" || echo "${RED}error${NORMAL}"
-     else
-        echo 1>&2 "${RED}File ${DEVICE}/grml2usb.filelist not found. I have nothing to delete therefor. Exiting.${NORMAL}"
-     fi
-  fi
-else
-  info
-  vfat_warning && \
-  mount_iso    && \
-  mount_device && \
-  copyit       && \
-  unmount      && \
-  run_syslinux && \
-  notice
-fi
-# }}}
+    @grml_flavour: name of grml flavour the configuration should be generated for"""
+
+    local_datestamp = DATESTAMP
+
+    return("""\
+# misc options:
+timeout 30
+# color red/blue green/black
+splashimage=/boot/grub/splash.xpm.gz
+foreground  = 000000
+background  = FFCC33
+
+# root=(hd0,%(install_partition)s)
+
+# define entries:
+title %(grml_flavour)s  - Default boot (using 1024x768 framebuffer)
+kernel /boot/release/%(grml_flavour)s/linux26 apm=power-off lang=us vga=791 quiet boot=live nomce module=%(grml_flavour)s
+initrd /boot/release/%(grml_flavour)s/initrd.gz
+
+""" % {'grml_flavour': grml_flavour, 'local_datestamp': local_datestamp, 'bootoptions': bootoptions, 'install_partition': install_partition } )
+
+
+def generate_isolinux_splash(grml_flavour):
+    """Generate bootsplash for isolinux/syslinux
+
+    @grml_flavour: name of grml flavour the configuration should be generated for"""
+
+    # TODO: adjust last bootsplash line (the one following the "Some information and boot ...")
+
+    grml_name = grml_flavour
+
+    return("""\
+\ f17\f\18/boot/syslinux/logo.16
+
+Some information and boot options available via keys F2 - F10. http://grml.org/
+%(grml_name)s
+""" % {'grml_name': grml_name} )
+
+
+def generate_main_syslinux_config(grml_flavour, bootoptions):
+    """Generate main configuration for use in syslinux.cfg
+
+    @grml_flavour: name of grml flavour the configuration should be generated for
+    @bootoptions: bootoptions that should be used as a default"""
+
+    local_datestamp = DATESTAMP
+
+    return("""\
+## main syslinux configuration - generated by grml2usb [main config generated at: %(local_datestamp)s]
+# use this to control the bootup via a serial port
+# SERIAL 0 9600
+DEFAULT grml
+TIMEOUT 300
+PROMPT 1
+DISPLAY /boot/syslinux/boot.msg
+F1 /boot/syslinux/boot.msg
+F2 /boot/syslinux/f2
+F3 /boot/syslinux/f3
+F4 /boot/syslinux/f4
+F5 /boot/syslinux/f5
+F6 /boot/syslinux/f6
+F7 /boot/syslinux/f7
+F8 /boot/syslinux/f8
+F9 /boot/syslinux/f9
+F10 /boot/syslinux/f10
+## end of main configuration
+
+## global configuration
+# the default option (using %(grml_flavour)s)
+LABEL  grml
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s %(bootoptions)s
+
+# memtest
+LABEL  memtest
+KERNEL /boot/addons/memtest
+
+# grub
+LABEL grub
+MENU LABEL grub
+KERNEL /boot/addons/memdisk
+APPEND initrd=/boot/addons/allinone.img
+
+# dos
+LABEL dos
+MENU LABEL dos
+KERNEL /boot/addons/memdisk
+APPEND initrd=/boot/addons/balder10.imz
+
+## end of global configuration
+""" % {'grml_flavour': grml_flavour, 'local_datestamp': local_datestamp, 'bootoptions': bootoptions} )
+
+
+def generate_flavour_specific_syslinux_config(grml_flavour, bootoptions):
+    """Generate flavour specific configuration for use in syslinux.cfg
+
+    @grml_flavour: name of grml flavour the configuration should be generated for
+    @bootoptions: bootoptions that should be used as a default"""
+
+    local_datestamp = DATESTAMP
+
+    return("""\
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s %(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s2ram
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s toram=%(grml_flavour)s %(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s-debug
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s debug boot=live initcall_debug%(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s-x
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s startx=wm-ng %(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s-nofb
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce quiet module=%(grml_flavour)s vga=normal video=ofonly %(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s-failsafe
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce quiet module=%(grml_flavour)s vga=normal lang=us boot=live noautoconfig atapicd noacpi acpi=off nomodules nofirewire noudev nousb nohotplug noapm nopcmcia maxcpus=1 noscsi noagp nodma ide=nodma noswap nofstab nosound nogpm nosyslog nodhcp nocpu nodisc nomodem xmodule=vesa noraid nolvm %(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s-forensic
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce vga=791 quiet module=%(grml_flavour)s nofstab noraid nolvm noautoconfig noswap raid=noautodetect %(bootoptions)s
+
+# flavour specific configuration for %(grml_flavour)s [grml2usb for %(grml_flavour)s: %(local_datestamp)s]
+LABEL  %(grml_flavour)s-serial
+KERNEL /boot/release/%(grml_flavour)s/linux26
+APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live nomce quiet module=%(grml_flavour)s vga=normal video=vesafb:off console=tty1 console=ttyS0,9600n8 %(bootoptions)s
+""" % {'grml_flavour': grml_flavour, 'local_datestamp': local_datestamp, 'bootoptions': bootoptions} )
+
+
+def install_grub(device):
+    """Install grub on specified device.
+
+    @mntpoint: mountpoint of device where grub should install its files to
+    @device: partition where grub should be installed to"""
+
+    if options.dryrun:
+        logging.info("Would execute grub-install [--root-directory=mount_point] %s now.", device)
+    else:
+        device_mountpoint = tempfile.mkdtemp()
+        register_tmpfile(device_mountpoint)
+        try:
+            mount(device, device_mountpoint, "")
+            logging.debug("grub-install --root-directory=%s %s", device_mountpoint, device)
+            proc = subprocess.Popen(["grub-install", "--root-directory=%s" % device_mountpoint, device], stdout=file(os.devnull, "r+"))
+            proc.wait()
+            if proc.returncode != 0:
+                raise Exception("error executing grub-install")
+        except CriticalException, error:
+            logging.critical("Fatal: %s" % error)
+            cleanup()
+            sys.exit(1)
+
+        finally:
+            unmount(device_mountpoint, "")
+            os.rmdir(device_mountpoint)
+            unregister_tmpfile(device_mountpoint)
+
+
+def install_syslinux(device):
+    """Install syslinux on specified device.
+
+    @device: partition where syslinux should be installed to"""
+
+    if options.dryrun:
+        logging.info("Would install syslinux as bootloader on %s", device)
+        return 0
+
+    # syslinux -d boot/isolinux /dev/sdb1
+    logging.info("Installing syslinux as bootloader")
+    logging.debug("syslinux -d boot/syslinux %s" % device)
+    proc = subprocess.Popen(["syslinux", "-d", "boot/syslinux", device])
+    proc.wait()
+    if proc.returncode != 0:
+        raise CriticalException("Error executing syslinux (either try --fat16 or --grub?)")
+
+
+def install_bootloader(device):
+    """Install bootloader on specified device.
+
+    @device: partition where bootloader should be installed to"""
+
+    # Install bootloader on the device (/dev/sda),
+    # not on the partition itself (/dev/sda1)?
+    #if partition[-1:].isdigit():
+    #    device = re.match(r'(.*?)\d*$', partition).group(1)
+    #else:
+    #    device = partition
+
+    if options.grub:
+        install_grub(device)
+    else:
+        try:
+            install_syslinux(device)
+        except CriticalException, error:
+            logging.critical("Fatal: %s" % error)
+            cleanup()
+            sys.exit(1)
+
+
+def install_lilo_mbr(lilo, device):
+    """TODO"""
+
+    # to support -A for extended partitions:
+    logging.info("Activating partitions in MBR via lilo")
+    logging.debug("%s -S /dev/null -M %s ext" % (lilo, device))
+    proc = subprocess.Popen([lilo, "-S", "/dev/null", "-M", device, "ext"])
+    proc.wait()
+    if proc.returncode != 0:
+        raise Exception("error executing lilo")
+
+    # activate partition:
+    logging.debug("%s -S /dev/null -A %s 1" % (lilo, device))
+    proc = subprocess.Popen([lilo, "-S", "/dev/null", "-A", device, "1"])
+    proc.wait()
+    if proc.returncode != 0:
+        raise Exception("error executing lilo")
+
+
+def install_syslinux_mbr(device):
+    """TODO"""
+
+    # lilo's mbr is broken, use the one from syslinux instead:
+    if not os.path.isfile("/usr/lib/syslinux/mbr.bin"):
+        raise Exception("/usr/lib/syslinux/mbr.bin can not be read")
+
+    logging.info("Installing syslinux MBR")
+    logging.debug("cat /usr/lib/syslinux/mbr.bin > %s" % device)
+    try:
+        # TODO -> use Popen instead?
+        retcode = subprocess.call("cat /usr/lib/syslinux/mbr.bin > "+ device, shell=True)
+        if retcode < 0:
+            logging.critical("Error copying MBR to device (%s)" % retcode)
+    except OSError, error:
+        logging.critical("Execution failed:", error)
+
+
+def install_mir_mbr(mbrtemplate, device, partition, ismirbsdmbr=True):
+    """Installs an MBR to a device.
+
+    Retrieve the partition table from "device", install an MBR from
+    the "mbrtemplate" file, set the "partition" (0..3) active, and
+    install the result back to "device".
+
+    "device" may be the name of a file assumed to be a hard disc
+    (or USB stick) image, or something like "/dev/sdb". "partition"
+    must be a number between 0 and 3, inclusive. "mbrtemplate" must
+    be a valid MBR file of at least 440 (439 if ismirbsdmbr) bytes.
+
+    If "ismirbsdmbr", the partitions' active flags are not changed.
+    Instead, the MBR's default value is set accordingly.
+    """
+
+    logging.info("Installing default MBR")
+
+    if not os.path.isfile(mbrtemplate):
+        logging.critical("Error: %s can not be read." % mbrtemplate)
+        raise CriticalException("Error installing MBR (either try --syslinux-mbr or install missing file?)")
+
+    if (partition < 0) or (partition > 3):
+        raise ValueError("partition must be between 0 and 3")
+
+    if ismirbsdmbr:
+        nmbrbytes = 439
+    else:
+        nmbrbytes = 440
+
+    tmpf = tempfile.NamedTemporaryFile()
+
+    logging.debug("executing: dd if='%s' of='%s' bs=512 count=1" % (device, tmpf.name))
+    proc = subprocess.Popen(["dd", "if=%s" % device, "of=%s" % tmpf.name, "bs=512", "count=1"], stderr=file(os.devnull, "r+"))
+    proc.wait()
+    if proc.returncode != 0:
+        raise Exception("error executing dd (first run)")
+
+    logging.debug("executing: dd if=%s of=%s bs=%s count=1 conv=notrunc" % (mbrtemplate, tmpf.name, nmbrbytes))
+    proc = subprocess.Popen(["dd", "if=%s" % mbrtemplate, "of=%s" % tmpf.name, "bs=%s" % nmbrbytes, "count=1", "conv=notrunc"], stderr=file(os.devnull, "r+"))
+    proc.wait()
+    if proc.returncode != 0:
+        raise Exception("error executing dd (second run)")
+
+    mbrcode = tmpf.file.read(512)
+    if len(mbrcode) < 512:
+        raise EOFError("MBR size (%d) < 512" % len(mbrcode))
+
+    if ismirbsdmbr:
+        mbrcode = mbrcode[0:439] + chr(partition) + \
+          mbrcode[440:510] + "\x55\xAA"
+    else:
+        actives = ["\x00", "\x00", "\x00", "\x00"]
+        actives[partition] = "\x80"
+        mbrcode = mbrcode[0:446] + actives[0] + \
+          mbrcode[447:462] + actives[1] + \
+          mbrcode[463:478] + actives[2] + \
+          mbrcode[479:494] + actives[3] + \
+          mbrcode[495:510] + "\x55\xAA"
+
+    tmpf.file.seek(0)
+    tmpf.file.truncate()
+    tmpf.file.write(mbrcode)
+    tmpf.file.close()
+
+    logging.debug("executing: dd if='%s' of='%s' bs=512 count=1 conv=notrunc" % (tmpf.name, device))
+    proc = subprocess.Popen(["dd", "if=%s" % tmpf.name, "of=%s" % device, "bs=512", "count=1", "conv=notrunc"], stderr=file(os.devnull, "r+"))
+    proc.wait()
+    if proc.returncode != 0:
+        raise Exception("error executing dd (third run)")
+    del tmpf
+
+
+def handle_syslinux_mbr(device):
+    """Install syslinux master boot record on given device
+
+    @device: device where MBR should be installed to"""
+
+    if not is_writeable(device):
+        raise IOError("device not writeable for user")
+
+    # try to use system's lilo
+    if which("lilo"):
+        lilo = which("lilo")
+    else:
+        # otherwise fall back to our static version
+        from platform import architecture
+        if architecture()[0] == '64bit':
+            lilo = '/usr/share/grml2usb/lilo/lilo.static.amd64'
+        else:
+            lilo = '/usr/share/grml2usb/lilo/lilo.static.i386'
+    # finally prefer a specified lilo executable
+    if options.lilo:
+        lilo = options.lilo
+
+    if not is_exe(lilo):
+        raise Exception("lilo executable can not be execute")
+
+    if options.dryrun:
+        logging.info("Would install MBR running lilo and using syslinux.")
+        return 0
+
+    install_lilo_mbr(lilo, device)
+    install_syslinux_mbr(device)
+
+
+def is_writeable(device):
+    """Check if the device is writeable for the current user
+
+    @device: partition where bootloader should be installed to"""
+
+    if not device:
+        return False
+        #raise Exception("no device for checking write permissions")
+
+    if not os.path.exists(device):
+        return False
+
+    return os.access(device, os.W_OK) and os.access(device, os.R_OK)
+
+
+def mount(source, target, mount_options):
+    """Mount specified source on given target
+
+    @source: name of device/ISO that should be mounted
+    @target: directory where the ISO should be mounted to
+    @options: mount specific options"""
+
+    # note: options.dryrun does not work here, as we have to
+    # locate files and identify the grml flavour
+
+    for x in file('/proc/mounts').readlines():
+        if x.startswith(source):
+            raise CriticalException("Error executing mount: %s already mounted - please unmount before invoking grml2usb" % source)
+
+    logging.debug("mount %s %s %s" % (mount_options, source, target))
+    proc = subprocess.Popen(["mount"] + list(mount_options) + [source, target])
+    proc.wait()
+    if proc.returncode != 0:
+        raise CriticalException("Error executing mount")
+    else:
+        logging.debug("register_mountpoint(%s)" % target)
+        register_mountpoint(target)
+
+
+def unmount(target, unmount_options):
+    """Unmount specified target
+
+    @target: target where something is mounted on and which should be unmounted
+    @options: options for umount command"""
+
+    # make sure we unmount only already mounted targets
+    target_unmount = False
+    mounts = open('/proc/mounts').readlines()
+    mountstring = re.compile(".*%s.*" % re.escape(target))
+    for line in mounts:
+        if re.match(mountstring, line):
+            target_unmount = True
+
+    if not target_unmount:
+        logging.debug("%s not mounted anymore" % target)
+    else:
+        logging.debug("umount %s %s" % (list(unmount_options), target))
+        proc = subprocess.Popen(["umount"] + list(unmount_options) + [target])
+        proc.wait()
+        if proc.returncode != 0:
+            raise Exception("Error executing umount")
+        else:
+            logging.debug("unregister_mountpoint(%s)" % target)
+            unregister_mountpoint(target)
+
+
+def check_for_usbdevice(device):
+    """Check whether the specified device is a removable USB device
+
+    @device: device name, like /dev/sda1 or /dev/sda
+    """
+
+    usbdevice = re.match(r'/dev/(.*?)\d*$', device).group(1)
+    usbdevice = os.path.realpath('/sys/class/block/' + usbdevice + '/removable')
+    if os.path.isfile(usbdevice):
+        is_usb = open(usbdevice).readline()
+        if is_usb == "1":
+            return 0
+        else:
+            return 1
+
+
+def check_for_fat(partition):
+    """Check whether specified partition is a valid VFAT/FAT16 filesystem
+
+    @partition: device name of partition"""
+
+    try:
+        udev_info = subprocess.Popen(["/lib/udev/vol_id", "-t", partition],
+                    stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        filesystem = udev_info.communicate()[0].rstrip()
+
+        if udev_info.returncode == 2:
+            raise CriticalException("Failed to read device %s"
+                                    " (wrong UID/permissions or device not present?)" % partition)
+
+        if filesystem != "vfat":
+            raise CriticalException("Partition %s does not contain a FAT16 filesystem. (Use --fat16 or run mkfs.vfat %s)" % (partition, partition))
+
+    except OSError:
+        raise CriticalException("Sorry, /lib/udev/vol_id not available.")
+
+
+def mkdir(directory):
+    """Simple wrapper around os.makedirs to get shell mkdir -p behaviour"""
+
+    # just silently pass as it's just fine it the directory exists
+    if not os.path.isdir(directory):
+        try:
+            os.makedirs(directory)
+        # pylint: disable-msg=W0704
+        except OSError:
+            pass
+
+
+def copy_system_files(grml_flavour, iso_mount, target):
+    """TODO"""
+
+    squashfs = search_file(grml_flavour + '.squashfs', iso_mount)
+    if squashfs is None:
+        logging.critical("Fatal: squashfs file not found")
+    else:
+        squashfs_target = target + '/live/'
+        execute(mkdir, squashfs_target)
+        # use install(1) for now to make sure we can write the files afterwards as normal user as well
+        logging.debug("cp %s %s" % (squashfs, target + '/live/' + grml_flavour + '.squashfs'))
+        proc = subprocess.Popen(["install", "--mode=664", squashfs, squashfs_target + grml_flavour + ".squashfs"])
+        proc.wait()
+
+    filesystem_module = search_file('filesystem.module', iso_mount)
+    if filesystem_module is None:
+        logging.critical("Fatal: filesystem.module not found")
+    else:
+        logging.debug("cp %s %s" % (filesystem_module, squashfs_target + grml_flavour + '.module'))
+        proc = subprocess.Popen(["install", "--mode=664", filesystem_module,
+                                squashfs_target + grml_flavour + '.module'])
+        proc.wait()
+
+    release_target = target + '/boot/release/' + grml_flavour
+    execute(mkdir, release_target)
+
+    kernel = search_file('linux26', iso_mount)
+    if kernel is None:
+        logging.critical("Fatal kernel not found")
+    else:
+        logging.debug("cp %s %s" % (kernel, release_target + '/linux26'))
+        proc = subprocess.Popen(["install", "--mode=664", kernel, release_target + '/linux26'])
+        proc.wait()
+
+    initrd = search_file('initrd.gz', iso_mount)
+    if initrd is None:
+        logging.critical("Fatal: initrd not found")
+    else:
+        logging.debug("cp %s %s" % (initrd, release_target + '/initrd.gz'))
+        proc = subprocess.Popen(["install", "--mode=664", initrd, release_target + '/initrd.gz'])
+        proc.wait()
+
+
+def copy_grml_files(iso_mount, target):
+    """TODO"""
+
+    grml_target = target + '/grml/'
+    execute(mkdir, grml_target)
+
+    for myfile in 'grml-cheatcodes.txt', 'grml-version', 'LICENSE.txt', 'md5sums', 'README.txt':
+        grml_file = search_file(myfile, iso_mount)
+        if grml_file is None:
+            logging.warn("Warning: myfile %s could not be found - can not install it", myfile)
+        else:
+            logging.debug("cp %s %s" % (grml_file, grml_target + grml_file))
+            proc = subprocess.Popen(["install", "--mode=664", grml_file, grml_target + myfile])
+            proc.wait()
+
+    grml_web_target = grml_target + '/web/'
+    execute(mkdir, grml_web_target)
+
+    for myfile in 'index.html', 'style.css':
+        grml_file = search_file(myfile, iso_mount)
+        if grml_file is None:
+            logging.warn("Warning: myfile %s could not be found - can not install it")
+        else:
+            logging.debug("cp %s %s" % (grml_file, grml_web_target + grml_file))
+            proc = subprocess.Popen(["install", "--mode=664", grml_file, grml_web_target + myfile])
+            proc.wait()
+
+    grml_webimg_target = grml_web_target + '/images/'
+    execute(mkdir, grml_webimg_target)
+
+    for myfile in 'button.png', 'favicon.png', 'linux.jpg', 'logo.png':
+        grml_file = search_file(myfile, iso_mount)
+        if grml_file is None:
+            logging.warn("Warning: myfile %s could not be found - can not install it")
+        else:
+            logging.debug("cp %s %s" % (grml_file, grml_webimg_target + grml_file))
+            proc = subprocess.Popen(["install", "--mode=664", grml_file, grml_webimg_target + myfile])
+            proc.wait()
+
+
+def copy_addons(iso_mount, target):
+    """TODO"""
+    addons = target + '/boot/addons/'
+    execute(mkdir, addons)
+
+    # grub all-in-one image
+    allinoneimg = search_file('allinone.img', iso_mount)
+    if allinoneimg is None:
+        logging.warn("Warning: allinone.img not found - can not install it")
+    else:
+        logging.debug("cp %s %s" % (allinoneimg, addons + '/allinone.img'))
+        proc = subprocess.Popen(["install", "--mode=664", allinoneimg, addons + 'allinone.img'])
+        proc.wait()
+
+    # freedos image
+    balderimg = search_file('balder10.imz', iso_mount)
+    if balderimg is None:
+        logging.warn("Warning: balder10.imz not found - can not install it")
+    else:
+        logging.debug("cp %s %s" % (balderimg, addons + '/balder10.imz'))
+        proc = subprocess.Popen(["install", "--mode=664", balderimg, addons + 'balder10.imz'])
+        proc.wait()
+
+    # memdisk image
+    memdiskimg = search_file('memdisk', iso_mount)
+    if memdiskimg is None:
+        logging.warn("Warning: memdisk not found - can not install it")
+    else:
+        logging.debug("cp %s %s" % (memdiskimg, addons + '/memdisk'))
+        proc = subprocess.Popen(["install", "--mode=664", memdiskimg, addons + 'memdisk'])
+        proc.wait()
+
+    # memtest86+ image
+    memtestimg = search_file('memtest', iso_mount)
+    if memtestimg is None:
+        logging.warn("Warning: memtest not found - can not install it")
+    else:
+        logging.debug("cp %s %s" % (memtestimg, addons + '/memtest'))
+        proc = subprocess.Popen(["install", "--mode=664", memtestimg, addons + 'memtest'])
+        proc.wait()
+
+
+def copy_bootloader_files(iso_mount, target):
+    """"TODO"""
+
+    syslinux_target = target + '/boot/syslinux/'
+    execute(mkdir, syslinux_target)
+
+    logo = search_file('logo.16', iso_mount)
+    logging.debug("cp %s %s" % (logo, syslinux_target + 'logo.16'))
+    proc = subprocess.Popen(["install", "--mode=664", logo, syslinux_target + 'logo.16'])
+    proc.wait()
+
+    for ffile in 'f2', 'f3', 'f4', 'f5', 'f6', 'f7', 'f8', 'f9', 'f10':
+        bootsplash = search_file(ffile, iso_mount)
+        logging.debug("cp %s %s" % (bootsplash, syslinux_target + ffile))
+        proc = subprocess.Popen(["install", "--mode=664", bootsplash, syslinux_target + ffile])
+        proc.wait()
+
+    grub_target = target + '/boot/grub/'
+    execute(mkdir, grub_target)
+
+    if not os.path.isfile("/usr/share/grml2usb/grub/splash.xpm.gz"):
+        logging.critical("Error: /usr/share/grml2usb/grub/splash.xpm.gz can not be read.")
+        raise
+    else:
+        logging.debug("cp /usr/share/grml2usb/grub/splash.xpm.gz %s" % grub_target + 'splash.xpm.gz')
+        proc = subprocess.Popen(["install", "--mode=664", '/usr/share/grml2usb/grub/splash.xpm.gz',
+                                grub_target + 'splash.xpm.gz'])
+        proc.wait()
+
+    if not os.path.isfile("/usr/share/grml2usb/grub/stage2_eltorito"):
+        logging.critical("Error: /usr/share/grml2usb/grub/stage2_eltorito can not be read.")
+        raise
+    else:
+        logging.debug("cp /usr/share/grml2usb/grub/stage2_eltorito to %s" % grub_target + 'stage2_eltorito')
+        proc = subprocess.Popen(["install", "--mode=664", '/usr/share/grml2usb/grub/stage2_eltorito',
+                                grub_target + 'stage2_eltorito'])
+        proc.wait()
+
+
+def install_iso_files(grml_flavour, iso_mount, device, target):
+    """Copy files from ISO on given target"""
+
+    # TODO
+    # * make sure grml_flavour, iso_mount, target are set when the function is called, otherwise raise exception
+    # * provide alternative search_file() if file information is stored in a config.ini file?
+    # * catch "install: .. No space left on device" & CO
+
+    if options.dryrun:
+        logging.info("Would copy files to %s", iso_mount)
+        return 0
+    elif not options.bootloaderonly:
+        logging.info("Copying files. This might take a while....")
+        copy_system_files(grml_flavour, iso_mount, target)
+        copy_grml_files(iso_mount, target)
+
+    if not options.skipaddons:
+        copy_addons(iso_mount, target)
+
+    if not options.copyonly:
+        copy_bootloader_files(iso_mount, target)
+
+        if not options.dryrun:
+            handle_bootloader_config(grml_flavour, device, target)
+
+    # make sure we sync filesystems before returning
+    proc = subprocess.Popen(["sync"])
+    proc.wait()
+
+
+def uninstall_files(device):
+    """Get rid of all grml files on specified device
+
+    @device: partition where grml2usb files should be removed from"""
+
+    # TODO
+    logging.critical("TODO: uninstalling files from %s not yet implement, sorry." % device)
+
+
+def identify_grml_flavour(mountpath):
+    """Get name of grml flavour
+
+    @mountpath: path where the grml ISO is mounted to
+    @return: name of grml-flavour"""
+
+    version_file = search_file('grml-version', mountpath)
+
+    if version_file == "":
+        logging.critical("Error: could not find grml-version file.")
+        raise
+
+    try:
+        tmpfile = open(version_file, 'r')
+        grml_info = tmpfile.readline()
+        grml_flavour = re.match(r'[\w-]*', grml_info).group()
+    except TypeError:
+        raise
+    except:
+        logging.critical("Unexpected error:", sys.exc_info()[0])
+        raise
+
+    return grml_flavour
+
+
+def handle_grub_config(grml_flavour, device, target):
+    """ TODO """
+
+    logging.debug("Generating grub configuration")
+    #with open("...", "w") as f:
+    #f.write("bla bla bal")
+
+    grub_target = target + '/boot/grub/'
+    # should be present via copy_bootloader_files(), but make sure it exists:
+    execute(mkdir, grub_target)
+    # we have to adjust root() inside grub configuration
+    if device[-1:].isdigit():
+        install_partition = device[-1:]
+
+    # do NOT write "None" in kernel cmdline
+    if options.bootoptions is None:
+        bootopt = ""
+    else:
+        bootopt = options.bootoptions
+
+    # grub1 config
+    #logging.debug("Creating grub1 configuration file")
+    #grub_config_file = open(grub_target + 'menu.lst', 'w')
+    #grub_config_file.write(generate_grub1_config(grml_flavour, install_partition, bootopt))
+    #grub_config_file.close()
+    # TODO => generate_main_grub1_config() && generate_flavour_specific_grub1_config()
+
+    # grub2 config
+    grub2_cfg = grub_target + 'grub.cfg'
+    logging.debug("Creating grub2 configuration file")
+
+    # install main configuration only *once*, no matter how many ISOs we have:
+    if os.path.isfile(grub2_cfg):
+        string = open(grub2_cfg).readline()
+        main_identifier = re.compile(".*main config generated at: %s.*" % re.escape(str(DATESTAMP)))
+        if not re.match(main_identifier, string):
+            grub2_config_file = open(grub2_cfg, 'w')
+            logging.info("Note: grml flavour %s is being installed as the default booting system." % grml_flavour)
+            grub2_config_file.write(generate_main_grub2_config(grml_flavour, install_partition, bootopt))
+            grub2_config_file.close()
+    else:
+        grub2_config_file = open(grub2_cfg, 'w')
+        grub2_config_file.write(generate_main_grub2_config(grml_flavour, install_partition, bootopt))
+        grub2_config_file.close()
+
+    grub_flavour_config = True
+    if os.path.isfile(grub2_cfg):
+        string = open(grub2_cfg).readlines()
+        logging.info("Note: you can boot flavour %s using '%s' on the commandline." % (grml_flavour, grml_flavour))
+        flavour = re.compile("grml2usb for %s: %s" % (re.escape(grml_flavour), re.escape(str(DATESTAMP))))
+        for line in string:
+            if flavour.match(line):
+                grub_flavour_config = False
+
+    if grub_flavour_config:
+        grub2_config_file = open(grub2_cfg, 'a')
+        grub2_config_file.write(generate_flavour_specific_grub2_config(grml_flavour, install_partition, bootopt))
+        grub2_config_file.close( )
+
+
+def handle_syslinux_config(grml_flavour, target):
+    """ TODO
+    """
+
+    # do NOT write "None" in kernel cmdline
+    if options.bootoptions is None:
+        bootopt = ""
+    else:
+        bootopt = options.bootoptions
+
+    logging.info("Generating syslinux configuration")
+    syslinux_target = target + '/boot/syslinux/'
+    # should be present via  copy_bootloader_files(), but make sure it exits:
+    execute(mkdir, syslinux_target)
+    syslinux_cfg = syslinux_target + 'syslinux.cfg'
+
+    # install main configuration only *once*, no matter how many ISOs we have:
+    if os.path.isfile(syslinux_cfg):
+        string = open(syslinux_cfg).readline()
+        main_identifier = re.compile(".*main config generated at: %s.*" % re.escape(str(DATESTAMP)))
+        if not re.match(main_identifier, string):
+            syslinux_config_file = open(syslinux_cfg, 'w')
+            logging.info("Note: grml flavour %s is being installed as the default booting system." % grml_flavour)
+            syslinux_config_file.write(generate_main_syslinux_config(grml_flavour, bootopt))
+            syslinux_config_file.close()
+    else:
+        syslinux_config_file = open(syslinux_cfg, 'w')
+        syslinux_config_file.write(generate_main_syslinux_config(grml_flavour, bootopt))
+        syslinux_config_file.close()
+
+    # install flavour specific configuration only *once* as well
+    # kind of ugly - I'm pretty sure this could be smoother...
+    syslinux_flavour_config = True
+    if os.path.isfile(syslinux_cfg):
+        string = open(syslinux_cfg).readlines()
+        logging.info("Note: you can boot flavour %s using '%s' on the commandline." % (grml_flavour, grml_flavour))
+        flavour = re.compile("grml2usb for %s: %s" % (re.escape(grml_flavour), re.escape(str(DATESTAMP))))
+        for line in string:
+            if flavour.match(line):
+                syslinux_flavour_config = False
+
+    if syslinux_flavour_config:
+        syslinux_config_file = open(syslinux_cfg, 'a')
+        syslinux_config_file.write(generate_flavour_specific_syslinux_config(grml_flavour, bootopt))
+        syslinux_config_file.close( )
+
+    logging.debug("Generating isolinux/syslinux splash %s" % syslinux_target + 'boot.msg')
+    isolinux_splash = open(syslinux_target + 'boot.msg', 'w')
+    isolinux_splash.write(generate_isolinux_splash(grml_flavour))
+    isolinux_splash.close( )
+
+
+def handle_bootloader_config(grml_flavour, device, target):
+    """TODO"""
+
+    if options.grub:
+        handle_grub_config(grml_flavour, device, target)
+    else:
+        handle_syslinux_config(grml_flavour, target)
+
+
+def handle_iso(iso, device):
+    """Main logic for mounting ISOs and copying files.
+
+    @iso: full path to the ISO that should be installed to the specified device
+    @device: partition where the specified ISO should be installed to"""
+
+    logging.info("Using ISO %s" % iso)
+
+    if os.path.isdir(iso):
+        logging.critical("TODO: /live/image handling not yet implemented - sorry") # TODO
+        sys.exit(1)
+
+    iso_mountpoint = tempfile.mkdtemp()
+    register_tmpfile(iso_mountpoint)
+    remove_iso_mountpoint = True
+
+    if not os.path.isfile(iso):
+        logging.critical("Fatal: specified ISO %s could not be read" % iso)
+        cleanup()
+        sys.exit(1)
+
+    try:
+        mount(iso, iso_mountpoint, ["-o", "loop", "-t", "iso9660"])
+    except CriticalException, error:
+        logging.critical("Fatal: %s" % error)
+        sys.exit(1)
+
+    if os.path.isdir(device):
+        logging.info("Specified target is a directory, not mounting therefor.")
+        device_mountpoint = device
+        remove_device_mountpoint = False
+        # skip_mbr = True
+    else:
+        device_mountpoint = tempfile.mkdtemp()
+        register_tmpfile(device_mountpoint)
+        remove_device_mountpoint = True
+        try:
+            mount(device, device_mountpoint, "")
+        except CriticalException, error:
+            logging.critical("Fatal: %s" % error)
+            cleanup()
+            sys.exit(1)
+
+    try:
+        grml_flavour = identify_grml_flavour(iso_mountpoint)
+        logging.info("Identified grml flavour \"%s\"." % grml_flavour)
+        install_iso_files(grml_flavour, iso_mountpoint, device, device_mountpoint)
+    except TypeError:
+        logging.critical("Fatal: a critical error happend during execution (not a grml ISO?), giving up")
+        sys.exit(1)
+    finally:
+        if os.path.isdir(iso_mountpoint) and remove_iso_mountpoint:
+            unmount(iso_mountpoint, "")
+            os.rmdir(iso_mountpoint)
+            unregister_tmpfile(iso_mountpoint)
+        if remove_device_mountpoint:
+            unmount(device_mountpoint, "")
+            if os.path.isdir(device_mountpoint):
+                os.rmdir(device_mountpoint)
+                unregister_tmpfile(device_mountpoint)
+
+
+def handle_mbr(device):
+    """TODO"""
+
+    # install MBR
+    # if not options.mbr:
+    #     logging.info("You are NOT using the --mbr option. Consider using it if your device does not boot.")
+    # else:
+    # make sure we install MBR on /dev/sdX and not /dev/sdX#
+
+    # make sure we have syslinux available
+    # if options.mbr:
+    if not options.skipmbr:
+        if not which("syslinux") and not options.copyonly and not options.dryrun:
+            logging.critical('Sorry, syslinux not available. Exiting.')
+            logging.critical('Please install syslinux or consider using the --grub option.')
+            sys.exit(1)
+
+    if not options.skipmbr:
+        if device[-1:].isdigit():
+            mbr_device = re.match(r'(.*?)\d*$', device).group(1)
+            partition_number = int(device[-1:]) - 1
+
+        try:
+            if options.syslinuxmbr:
+                handle_syslinux_mbr(mbr_device)
+            else:
+                if options.mbrmgr:
+                    install_mir_mbr('/usr/share/grml2usb/mbr/mbrmgr', mbr_device, partition_number, True)
+                else:
+                    install_mir_mbr('/usr/share/grml2usb/mbr/mbrldr', mbr_device, partition_number, True)
+        except IOError, error:
+            logging.critical("Execution failed: %s", error)
+            sys.exit(1)
+        except Exception, error:
+            logging.critical("Execution failed: %s", error)
+            sys.exit(1)
+
+
+def handle_vfat(device):
+    """TODO"""
+
+    # make sure we have mkfs.vfat available
+    if options.fat16 and not options.force:
+        if not which("mkfs.vfat") and not options.copyonly and not options.dryrun:
+            logging.critical('Sorry, mkfs.vfat not available. Exiting.')
+            logging.critical('Please make sure to install dosfstools.')
+            sys.exit(1)
+
+        # make sure the user is aware of what he is doing
+        f = raw_input("Are you sure you want to format the device with a fat16 filesystem? y/N ")
+        if f == "y" or f == "Y":
+            logging.info("Note: you can skip this question using the option --force")
+            mkfs_fat16(device)
+        else:
+            sys.exit(1)
+
+    # check for vfat filesystem
+    if device is not None and not os.path.isdir(device):
+        try:
+            check_for_fat(device)
+        except CriticalException, error:
+            logging.critical("Execution failed: %s", error)
+            sys.exit(1)
+
+    if not check_for_usbdevice(device):
+        print "Warning: the specified device %s does not look like a removable usb device." % device
+        f = raw_input("Do you really want to continue? y/N ")
+        if f == "y" or f == "Y":
+            pass
+        else:
+            sys.exit(1)
+
+
+def handle_compat_warning(device):
+    """TODO"""
+
+    # make sure we can replace old grml2usb script and warn user when using old way of life:
+    if device.startswith("/mnt/external") or device.startswith("/mnt/usb") and not options.force:
+        print "Warning: the semantics of grml2usb has changed."
+        print "Instead of using grml2usb /path/to/iso %s you might" % device
+        print "want to use grml2usb /path/to/iso /dev/... instead."
+        print "Please check out the grml2usb manpage for details."
+        f = raw_input("Do you really want to continue? y/N ")
+        if f == "y" or f == "Y":
+            pass
+        else:
+            sys.exit(1)
+
+
+def handle_logging():
+    """TODO"""
+
+    if options.verbose:
+        FORMAT = "%(asctime)-15s %(message)s"
+        logging.basicConfig(level=logging.DEBUG, format=FORMAT)
+    elif options.quiet:
+        FORMAT = "Critical: %(message)s"
+        logging.basicConfig(level=logging.CRITICAL, format=FORMAT)
+    else:
+        FORMAT = "Info: %(message)s"
+        logging.basicConfig(level=logging.INFO, format=FORMAT)
+
+
+def handle_bootloader(device):
+    """TODO"""
+    # Install bootloader only if not using the --copy-only option
+    if options.copyonly:
+        logging.info("Not installing bootloader and its files as requested via option copyonly.")
+    else:
+        install_bootloader(device)
+
+
+def main():
+    """Main function [make pylint happy :)]"""
+
+    if options.version:
+        print os.path.basename(sys.argv[0]) + " " + PROG_VERSION
+        sys.exit(0)
+
+    if len(args) < 2:
+        parser.error("invalid usage")
+
+    # log handling
+    handle_logging()
+
+    # make sure we have the appropriate permissions
+    check_uid_root()
+
+    if options.dryrun:
+        logging.info("Running in simulation mode as requested via option dry-run.")
+
+    # specified arguments
+    device = args[len(args) - 1]
+    isos = args[0:len(args) - 1]
+
+    if device[-1:].isdigit():
+        if int(device[-1:]) > 4:
+            logging.critical("Fatal: installation on partition number >4 not supported. (As the BIOS won't support it.)")
+            sys.exit(1)
+    else:
+        logging.critical("Fatal: installation on raw device not supported. (As the BIOS won't support it.)")
+        sys.exit(1)
+
+    # provide upgrade path
+    handle_compat_warning(device)
+
+    # check for vfat partition
+    handle_vfat(device)
+
+    # main operation (like installing files)
+    for iso in isos:
+        handle_iso(iso, device)
+
+    # install mbr
+    handle_mbr(device)
+
+    handle_bootloader(device)
+
+    # finally be politely :)
+    logging.info("Finished execution of grml2usb (%s). Have fun with your grml system." % PROG_VERSION)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except KeyboardInterrupt:
+        logging.info("Received KeyboardInterrupt")
+        cleanup()
 
 ## END OF FILE #################################################################
-# vim:foldmethod=marker
+# vim:foldmethod=indent expandtab ai ft=python tw=120 fileencoding=utf-8