X-Git-Url: https://git.grml.org/?p=grml2usb.git;a=blobdiff_plain;f=grml2usb.py;h=5f01825e3a9ea6177c028161f223b51b9b5f43d5;hp=30abbc65b7759d6ed615c8d154852235207f15bc;hb=e85e34ca0caed55bcdef5cd2937839b80b8656af;hpb=27859253a5c4e08c79670ed2f06e5435afd95ee7 diff --git a/grml2usb.py b/grml2usb.py index 30abbc6..5f01825 100755 --- a/grml2usb.py +++ b/grml2usb.py @@ -13,45 +13,42 @@ This script installs a grml system (either a running system or ISO[s]) to a USB TODO ---- -* install memtest, dos, grub,... to /boot/addons/ -* copy grml files to /grml/ * implement missing options (--grub, --kernel, --initrd, --squashfs, --uninstall) -* code improvements: - - improve error handling wherever possible :) - - get rid of all TODOs in code - - use 'with open("...", "w") as f: ... f.write("...")' - - simplify functions/code as much as possible (move stuff to further functions) -> audit * validate partition schema/layout: is the partition schema ok and the bootable flag set? (--validate?) +* provide --create-partition option? * implement logic for storing information about copied files -> register every file in a set() * the last line in bootsplash (boot.msg) should mention all installed grml flavours +* code improvements: + - improve error handling wherever possible :) + - use 'with open("...", "w") as f: ... f.write("...")' + - simplify functions/code as much as possible, especially: + Too many local variables + Too many branches + Too many statements * graphical version? any volunteers? :) """ from __future__ import with_statement -import os, re, subprocess, sys, tempfile from optparse import OptionParser -from os.path import exists, join, abspath -from os import pathsep from inspect import isroutine, isclass -import logging -import datetime, time +import datetime, logging, os, re, subprocess, sys, tempfile, time # global variables -PROG_VERSION = "0.9.2" -skip_mbr = True # hm, can we get rid of that? :) -mounted = set() # register mountpoints -tmpfiles = set() # register tmpfiles -datestamp= time.mktime(datetime.datetime.now().timetuple()) # unique identifier for syslinux.cfg +PROG_VERSION = "0.9.2(pre1)" +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]> \n\ +USAGE = "Usage: %prog [options] <[ISO[s] | /live/image]> \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 a grml ISO or a running grml system (/live/image),\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." +and root access. Further information can be found in: man grml2usb" -parser = OptionParser(usage=usage) +# pylint: disable-msg=C0103 +parser = OptionParser(usage=USAGE) parser.add_option("--bootoptions", dest="bootoptions", action="store", type="string", help="use specified bootoptions as default") @@ -73,10 +70,12 @@ 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", dest="mbr", action="store_true", - help="install master boot record (MBR) on the device") 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("--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", @@ -88,6 +87,13 @@ parser.add_option("-v", "--version", dest="version", action="store_true", (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. """ @@ -97,29 +103,65 @@ def cleanup(): proc.wait() try: - for device in mounted: + for device in MOUNTED: unmount(device, "") # ignore: RuntimeError: Set changed size during iteration - except: - pass + 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, *args): +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: - logging.debug('dry-run only: %s(%s)' % (get_function_name(f), ', '.join(map(repr, args)))) + # pylint: disable-msg=W0141 + logging.debug('dry-run only: %s(%s)' % (get_function_name(f), ', '.join(map(repr, exec_arguments)))) else: - return f(*args) + # pylint: disable-msg=W0142 + return f(*exec_arguments) def is_exe(fpath): @@ -134,7 +176,7 @@ def which(program): """Check whether a given program is available in PATH @program: name of executable""" - fpath, fname = os.path.split(program) + fpath = os.path.split(program)[0] if fpath: if is_exe(program): return program @@ -147,17 +189,22 @@ def which(program): return None -def search_file(filename, search_path='/bin' + pathsep + '/usr/bin'): - """Given a search path, find file""" +def search_file(filename, search_path='/bin' + os.pathsep + '/usr/bin'): + """Given a search path, find file + + @filename: name of file to search for + @search_path: path where searching for the specified filename""" file_found = 0 - paths = search_path.split(pathsep) + 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 exists(join(current_dir, filename)): + if os.path.exists(os.path.join(current_dir, filename)): file_found = 1 break if file_found: - return abspath(join(current_dir, filename)) + return os.path.abspath(os.path.join(current_dir, filename)) else: return None @@ -179,25 +226,7 @@ def mkfs_fat16(device): proc = subprocess.Popen(["mkfs.vfat", "-F", "16", device]) proc.wait() if proc.returncode != 0: - raise Exception, "error executing mkfs.vfat" - - -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 Exception, "error executing syslinux" + raise Exception("error executing mkfs.vfat") def generate_grub_config(grml_flavour): @@ -222,7 +251,7 @@ kernel /boot/release/%(grml_flavour)s/linux26 apm=power-off lang=us vga=791 quie initrd /boot/release/%(grml_flavour)s/initrd.gz # TODO: extend configuration :) -""" % locals()) +""" % {'grml_flavour': grml_flavour} ) def generate_isolinux_splash(grml_flavour): @@ -239,7 +268,7 @@ def generate_isolinux_splash(grml_flavour): Some information and boot options available via keys F2 - F10. http://grml.org/ %(grml_name)s -""" % locals()) +""" % {'grml_name': grml_name} ) def generate_main_syslinux_config(grml_flavour, bootoptions): @@ -248,7 +277,7 @@ def generate_main_syslinux_config(grml_flavour, bootoptions): @grml_flavour: name of grml flavour the configuration should be generated for @bootoptions: bootoptions that should be used as a default""" - local_datestamp = datestamp + local_datestamp = DATESTAMP return("""\ ## main syslinux configuration - generated by grml2usb [main config generated at: %(local_datestamp)s] @@ -279,7 +308,7 @@ APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live n # memtest LABEL memtest KERNEL /boot/addons/memtest -APPEND BOOT_IMAGE=memtest +#APPEND BOOT_IMAGE=memtest # grub LABEL grub @@ -294,7 +323,7 @@ KERNEL /boot/addons/memdisk APPEND initrd=/boot/addons/balder10.imz ## end of global configuration -""" % locals()) +""" % {'grml_flavour': grml_flavour, 'local_datestamp': local_datestamp, 'bootoptions': bootoptions} ) def generate_flavour_specific_syslinux_config(grml_flavour, bootoptions): @@ -303,7 +332,7 @@ def generate_flavour_specific_syslinux_config(grml_flavour, bootoptions): @grml_flavour: name of grml flavour the configuration should be generated for @bootoptions: bootoptions that should be used as a default""" - local_datestamp = datestamp + local_datestamp = DATESTAMP return("""\ @@ -345,8 +374,8 @@ APPEND initrd=/boot/release/%(grml_flavour)s/initrd.gz apm=power-off boot=live n # 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 -""" % locals()) +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): @@ -360,6 +389,24 @@ def install_grub(device): logging.critical("TODO: sorry - grub-install %s not implemented yet" % device) +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 Exception("error executing syslinux") + + def install_bootloader(device): """Install bootloader on specified device. @@ -378,19 +425,40 @@ def install_bootloader(device): install_syslinux(device) -def is_writeable(device): - """Check if the device is writeable for the current user +def install_lilo_mbr(lilo, device): + """TODO""" - @device: partition where bootloader should be installed to""" + # to support -A for extended partitions: + logging.info("Installing MBR") + 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") - if not device: - return False - #raise Exception, "no device for checking write permissions" + # 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") - if not os.path.exists(device): - return False - return os.access(device, os.W_OK) and os.access(device, os.R_OK) +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.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_mbr(device): @@ -399,86 +467,49 @@ def install_mbr(device): @device: device where MBR should be installed to""" if not is_writeable(device): - raise IOError, "device not writeable for user" + raise IOError("device not writeable for user") - if options.lilo: - lilo = options.lilo + # 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" + raise Exception("lilo executable can not be execute") if options.dryrun: logging.info("Would install MBR running lilo and using syslinux.") return 0 - # to support -A for extended partitions: - logging.info("Installing MBR") - 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)) - if not options.dryrun: - proc = subprocess.Popen([lilo, "-S", "/dev/null", "-A", device, "1"]) - proc.wait() - if proc.returncode != 0: - raise Exception, "error executing lilo" - - # 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.debug("cat /usr/lib/syslinux/mbr.bin > %s" % device) - if not options.dryrun: - 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 register_tmpfile(path): - """TODO - """ - - tmpfiles.add(path) - - -def unregister_tmpfile(path): - """TODO - """ + install_lilo_mbr(lilo, device) + install_syslinux_mbr(device) - if path in tmpfiles: - tmpfiles.remove(path) +def is_writeable(device): + """Check if the device is writeable for the current user -def register_mountpoint(target): - """TODO - """ - - mounted.add(target) + @device: partition where bootloader should be installed to""" + if not device: + return False + #raise Exception("no device for checking write permissions") -def unregister_mountpoint(target): - """TODO - """ + if not os.path.exists(device): + return False - if target in mounted: - mounted.remove(target) + return os.access(device, os.W_OK) and os.access(device, os.R_OK) -def mount(source, target, options): +def mount(source, target, mount_options): """Mount specified source on given target @source: name of device/ISO that should be mounted @@ -487,17 +518,17 @@ def mount(source, target, options): # notice: options.dryrun does not work here, as we have to # locate files and identify the grml flavour - logging.debug("mount %s %s %s" % (options, source, target)) - proc = subprocess.Popen(["mount"] + list(options) + [source, target]) + 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 Exception, "Error executing mount" + raise CriticalException("Error executing mount") else: logging.debug("register_mountpoint(%s)" % target) register_mountpoint(target) -def unmount(target, options): +def unmount(target, unmount_options): """Unmount specified target @target: target where something is mounted on and which should be unmounted @@ -514,11 +545,11 @@ def unmount(target, options): if not target_unmount: logging.debug("%s not mounted anymore" % target) else: - logging.debug("umount %s %s" % (list(options), target)) - proc = subprocess.Popen(["umount"] + list(options) + [target]) + 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" + raise Exception("Error executing umount") else: logging.debug("unregister_mountpoint(%s)" % target) unregister_mountpoint(target) @@ -546,151 +577,213 @@ def check_for_fat(partition): @partition: device name of partition""" try: - udev_info = subprocess.Popen(["/lib/udev/vol_id", "-t", partition],stdout=subprocess.PIPE, stderr=subprocess.PIPE) + 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 Exception, "Failed to read device %s - wrong UID / permissions?" % partition + raise CriticalException("Failed to read device %s" + "(wrong UID/permissions or device not present?)" % partition) if filesystem != "vfat": - raise Exception, "Device %s does not contain a FAT16 partition." % partition + raise CriticalException("Device %s does not contain a FAT16 partition." % partition) except OSError: - raise Exception, "Sorry, /lib/udev/vol_id not available." + 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: - # just silently pass as it's just fine it the directory exists pass -def copy_grml_files(grml_flavour, iso_mount, target): - """Copy files from ISO on given target""" - - # TODO - # * provide alternative search_file() if file information is stored in a config.ini file? - # * catch "install: .. No space left on device" & CO - # * abstract copy logic to make the code shorter and get rid of spaghettis ;) +def copy_system_files(grml_flavour, iso_mount, target): + """TODO""" - if options.dryrun: - logging.info("Would copy files to %s", iso_mount) - elif not options.bootloaderonly: - logging.info("Copying files. This might take a while....") - - squashfs = search_file(grml_flavour + '.squashfs', iso_mount) + 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) + 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 = 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) + release_target = target + '/boot/release/' + grml_flavour + execute(mkdir, release_target) - kernel = search_file('linux26', iso_mount) + 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) + 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() - if not options.copyonly: - 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() +def copy_grml_files(iso_mount, target): + """TODO""" - 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]) + 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() - grub_target = target + '/boot/grub/' - execute(mkdir, grub_target) + grml_web_target = grml_target + '/web/' + execute(mkdir, grml_web_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 + 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 /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']) + 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() - 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 + 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 /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']) + 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() - if not options.dryrun: - logging.debug("Generating grub configuration") - #with open("...", "w") as f: - #f.write("bla bla bal") - grub_config_file = open(grub_target + 'menu.lst', 'w') - grub_config_file.write(generate_grub_config(grml_flavour)) - grub_config_file.close() - - logging.info("Generating syslinux configuration") - 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("Notice: grml flavour %s is being installed as the default booting system." % grml_flavour) - syslinux_config_file.write(generate_main_syslinux_config(grml_flavour, options.bootoptions)) - syslinux_config_file.close() - else: - syslinux_config_file = open(syslinux_cfg, 'w') - syslinux_config_file.write(generate_main_syslinux_config(grml_flavour, options.bootoptions)) - syslinux_config_file.close() - - # install flavour specific configuration only *once* as well - # kind of ugly - I'm pretty sure this could be smoother... - flavour_config = True - if os.path.isfile(syslinux_cfg): - string = open(syslinux_cfg).readlines() - logging.info("Notice: 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): - flavour_config = False - - - if flavour_config: - syslinux_config_file = open(syslinux_cfg, 'a') - syslinux_config_file.write(generate_flavour_specific_syslinux_config(grml_flavour, options.bootoptions)) - 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 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() + + # memtest86+ 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() + + +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, 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 + # * abstract copy logic to make the code shorter and get rid of spaghettis ;) + + 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, target) # FIXME # make sure we sync filesystems before returning proc = subprocess.Popen(["sync"]) @@ -731,6 +824,62 @@ def identify_grml_flavour(mountpath): return grml_flavour +def handle_bootloader_config(grml_flavour, 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) + grub_config_file = open(grub_target + 'menu.lst', 'w') + grub_config_file.write(generate_grub_config(grml_flavour)) + grub_config_file.close() + + 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("Notice: grml flavour %s is being installed as the default booting system." % grml_flavour) + syslinux_config_file.write(generate_main_syslinux_config(grml_flavour, options.bootoptions)) + syslinux_config_file.close() + else: + syslinux_config_file = open(syslinux_cfg, 'w') + syslinux_config_file.write(generate_main_syslinux_config(grml_flavour, options.bootoptions)) + syslinux_config_file.close() + + # install flavour specific configuration only *once* as well + # kind of ugly - I'm pretty sure this could be smoother... + flavour_config = True + if os.path.isfile(syslinux_cfg): + string = open(syslinux_cfg).readlines() + logging.info("Notice: 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): + flavour_config = False + + if flavour_config: + syslinux_config_file = open(syslinux_cfg, 'a') + syslinux_config_file.write(generate_flavour_specific_syslinux_config(grml_flavour, options.bootoptions)) + 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_iso(iso, device): """Main logic for mounting ISOs and copying files. @@ -742,108 +891,90 @@ def handle_iso(iso, device): if os.path.isdir(iso): logging.critical("TODO: /live/image handling not yet implemented - sorry") # TODO sys.exit(1) - else: - 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) + iso_mountpoint = tempfile.mkdtemp() + register_tmpfile(iso_mountpoint) + remove_iso_mountpoint = True - mount(iso, iso_mountpoint, ["-o", "loop", "-t", "iso9660"]) - - if os.path.isdir(device): - logging.info("Specified target is a directory, not mounting therefore.") - device_mountpoint = device - remove_device_mountpoint = False - skip_mbr = True + if not os.path.isfile(iso): + logging.critical("Fatal: specified ISO %s could not be read" % iso) + cleanup() + sys.exit(1) - else: - device_mountpoint = tempfile.mkdtemp() - register_tmpfile(device_mountpoint) - remove_device_mountpoint = True - try: - mount(device, device_mountpoint, "") - except Exception, error: - logging.critical("Fatal: %s" % error) - cleanup() + 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: - grml_flavour = identify_grml_flavour(iso_mountpoint) - logging.info("Identified grml flavour \"%s\"." % grml_flavour) - copy_grml_files(grml_flavour, iso_mountpoint, device_mountpoint) - except TypeError: - logging.critical("Fatal: a critical error happend during execution, 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) - - # grml_flavour_short = grml_flavour.replace('-','') - # logging.debug("grml_flavour_short = %s" % grml_flavour_short) - - -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") + mount(device, device_mountpoint, "") + except CriticalException, error: + logging.critical("Fatal: %s" % error) + cleanup() - # log handling - if options.verbose: - FORMAT = "%(asctime)-15s %(message)s" - logging.basicConfig(level=logging.DEBUG, format=FORMAT) - elif options.quiet: - FORMAT = "Critial: %(message)s" - logging.basicConfig(level=logging.CRITICAL, format=FORMAT) - else: - FORMAT = "Info: %(message)s" - logging.basicConfig(level=logging.INFO, format=FORMAT) + try: + grml_flavour = identify_grml_flavour(iso_mountpoint) + logging.info("Identified grml flavour \"%s\"." % grml_flavour) + install_iso_files(grml_flavour, iso_mountpoint, 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) - if options.dryrun: - logging.info("Running in simulate mode as requested via option dry-run.") - else: - check_uid_root() - # specified arguments - device = args[len(args) - 1] - isos = args[0:len(args) - 1] +def handle_mbr(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) + # 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 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*$', device).group(1) + + try: + install_mbr(mbr_device) + except IOError, error: + logging.critical("Execution failed: %s", error) + sys.exit(1) + except Exception, error: + logging.critical("Execution failed: %s", error) + sys.exit(1) + + +def handle_vfat(device): + """TODO""" + # make sure we have mkfs.vfat available if options.fat16 and not options.force: if not which("mkfs.vfat") and not options.copyonly and not options.dryrun: @@ -863,7 +994,7 @@ def main(): if device is not None and not os.path.isdir(device): try: check_for_fat(device) - except Exception, error: + except CriticalException, error: logging.critical("Execution failed: %s", error) sys.exit(1) @@ -871,7 +1002,7 @@ def main(): print "Warning: the specified device %s does not look like a removable usb device." % device f = raw_input("Do you really want to continue? y/N ") if f == "y" or f == "Y": - pass + pass else: sys.exit(1) @@ -879,33 +1010,84 @@ def main(): if options.fat16: mkfs_fat16(device) - # main operation (like installing files) - for iso in isos: - handle_iso(iso, device) - # install MBR - if not options.mbr or skip_mbr: - logging.info("You are NOT using the --mbr option. Consider using it if your device does not boot.") - else: - # make sure we install MBR on /dev/sdX and not /dev/sdX# - if device[-1:].isdigit(): - mbr_device = re.match(r'(.*?)\d*$', device).group(1) +def handle_compat_warning(device): + """TODO""" - try: - install_mbr(mbr_device) - except IOError, error: - logging.critical("Execution failed: %s", error) - sys.exit(1) - except Exception, error: - logging.critical("Execution failed: %s", error) + # 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 = "Critial: %(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 simulate mode as requested via option dry-run.") + + # specified arguments + device = args[len(args) - 1] + isos = args[0:len(args) - 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) @@ -918,4 +1100,4 @@ if __name__ == "__main__": cleanup() ## END OF FILE ################################################################# -# vim:foldmethod=marker expandtab ai ft=python tw=120 fileencoding=utf-8 +# vim:foldmethod=indent expandtab ai ft=python tw=120 fileencoding=utf-8