grml2usb
~~~~~~~~
-This script installs a grml system (either a running system or ISO[s]) to a USB device
+This script installs a Grml system (either a running system or ISO[s]) to a USB device
:copyright: (c) 2009, 2010, 2011 by Michael Prokop <mika@grml.org>
:license: GPL v2 or any later version
"""
+from __future__ import print_function
from optparse import OptionParser
from inspect import isroutine, isclass
import datetime
import tempfile
import time
import uuid
+import shutil
# The line following this line is patched by debian/rules and tarball.sh.
PROG_VERSION = '***UNRELEASED***'
GRML_DEFAULT = None
UUID = None
SYSLINUX_LIBS = "/usr/lib/syslinux/"
+GPT_HEADER = "\x55\xaa\x45\x46\x49\x20\x50\x41\x52\x54" # original GPT header
+GRUB_INSTALL = None
+
+RE_PARTITION = re.compile(r'([a-z/]*?)(\d+)$')
+RE_P_PARTITION = re.compile(r'(.*?\d+)p(\d+)$')
+RE_LOOP_DEVICE = re.compile(r'/dev/loop\d+$')
def syslinux_warning(option, opt, value, opt_parser):
setattr(opt_parser.values, 'syslinux', False)
# cmdline parsing
-USAGE = "Usage: %prog [options] <[ISO[s] | /live/image]> </dev/sdX#>\n\
+USAGE = "Usage: %prog [options] <[ISO[s] | /lib/live/mount/medium]> </dev/sdX#>\n\
\n\
-%prog installs grml ISO[s] 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\
+%prog installs Grml ISO[s] 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 (/lib/live/mount/medium),\n\
grub or syslinux and root access.\n\
\n\
Run %prog --help for usage hints, further information via: man grml2usb"
help="do not output anything but just errors on console")
parser.add_option("--remove-bootoption", dest="removeoption", action="append",
help="regex for removing existing bootoptions")
+parser.add_option("--rw-blockdev", dest="rwblockdev", action="store_true",
+ help="enforce read-write mode on involved block devices")
parser.add_option("--skip-addons", dest="skipaddons", action="store_true",
help="do not install /boot/addons/ files")
+parser.add_option("--skip-bootflag", dest="skipbootflag", action="store_true",
+ help="do not try to check whether the destination has the bootflag set")
parser.add_option("--skip-grub-config", dest="skipgrubconfig", action="store_true",
help="skip generation of grub configuration 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("--skip-syslinux-config", dest="skipsyslinuxconfig", action="store_true",
help="skip generation of syslinux configuration files")
+parser.add_option("--skip-usb-check", dest="skipusbcheck", action="store_true",
+ help="skip check to verify whether given device is removable")
parser.add_option("--syslinux", dest="syslinux", action="callback", default=True,
callback=syslinux_warning,
help="install syslinux bootloader (deprecated as it's the default)")
GRML2USB_BASE = os.path.dirname(os.path.realpath(__file__))
+class HodorException(Exception):
+ """Throw exception if the exact error is not known and not fatal.
+
+ @Exception: message"""
+
+
class CriticalException(Exception):
"""Throw critical exception if the exact error is not known but fatal.
@Exception: message"""
- pass
+
+
+class VerifyException(Exception):
+ """Throw critical exception if there is an fatal error when verifying something.
+
+ @Exception: message"""
# The following two functions help to operate on strings as
def cleanup():
"""Cleanup function to make sure there aren't any mounted devices left behind.
"""
+ def del_failed(fn, filepath, exc):
+ msg = "Deletion of %s failed in temporary folder %s"
+ logging.warn(msg % (filepath, path))
logging.info("Cleaning up before exiting...")
proc = subprocess.Popen(["sync"])
proc.wait()
- try:
- for device in MOUNTED:
+ for device in MOUNTED.copy():
+ try:
unmount(device, "")
- for tmpfile in TMPFILES:
- os.unlink(tmpfile)
- # ignore: RuntimeError: Set changed size during iteration
- except RuntimeError:
- logging.debug('caught expection RuntimeError, ignoring')
+ logging.debug('Unmounted %s' % device)
+ except StandardError:
+ logging.debug('RuntimeError while umount %s, ignoring' % device)
+
+ for tmppath in TMPFILES.copy():
+ try:
+ if os.path.isdir(tmppath) and not os.path.islink(tmppath):
+ # symbolic links to directories are ignored
+ # without the check it will throw an OSError
+ shutil.rmtree(tmppath, onerror=del_failed)
+ logging.debug('temporary directory %s deleted' % tmppath)
+ unregister_tmpfile(tmppath)
+ elif os.path.isfile:
+ os.unlink(tmppath)
+ logging.debug('temporary file %s deleted' % tmppath)
+ unregister_tmpfile(tmppath)
+ except StandardError:
+ msg = 'RuntimeError while removing temporary %s, ignoring'
+ logging.debug(msg % tmppath)
def register_tmpfile(path):
return obj.__module__ + '.' + obj.__name__
+def set_rw(device):
+ if not options.rwblockdev:
+ return
+
+ logging.debug("executing: blockdev --setrw %s", device)
+ proc = subprocess.Popen(["blockdev", "--setrw", device])
+ proc.wait()
+ if proc.returncode != 0:
+ raise Exception("error executing blockdev on %s" % device)
+
+
def execute(f, *exec_arguments):
"""Wrapper for executing a command. Either really executes
the command (default) or when using --dry-run commandline option
"""
bootloader_dirs = ['/boot/isolinux/', '/boot/syslinux/']
for directory in bootloader_dirs:
- for name in name, \
- "%s_%s" % (get_flavour_filename(flavour), name):
+ for name in name, "%s_%s" % (get_flavour_filename(flavour), name):
if os.path.isfile(iso_mount + directory + name):
return (directory, name)
return ('', '')
@cwd: current working directory
"""
- return os.path.exists(os.path.join(cwd, filename))
+ return os.path.exists(os.path.join(cwd, filename))
for path in paths:
current_dir = path
def check_uid_root():
"""Check for root permissions"""
if not os.geteuid() == 0:
- sys.exit("Error: please run this script with uid 0 (root).")
+ raise CriticalException("please run this script with uid 0 (root).")
+
+
+# for usage inside check_boot_flag
+def get_partition_for_path(path):
+ import parted
+
+ boot_dev, x = get_device_from_partition(path)
+
+ d = parted.getDevice(boot_dev)
+ disk = parted.Disk(d)
+ return disk.getPartitionByPath(path)
+
+
+def check_boot_flag(device):
+ boot_dev, x = get_device_from_partition(device)
+
+ try:
+ import parted
+ part = get_partition_for_path(device)
+ if part is None:
+ raise HodorException("parted could not find partition")
+ if part.getFlag(parted.PARTITION_BOOT):
+ logging.debug("bootflag is enabled on %s" % device)
+ return
+ except HodorException, e:
+ logging.info("%s, falling back to old bootflag detection", e)
+ except ImportError, e:
+ logging.debug("could not import parted, falling back to old bootflag detection")
+
+ with open(boot_dev, 'r') as image:
+ data = image.read(520)
+ bootcode = data[440:]
+ gpt_data = bootcode[70:80]
+
+ if gpt_data == GPT_HEADER:
+ logging.info("GPT detected, skipping bootflag check")
+ elif bootcode[6] == '\x80':
+ logging.debug("bootflag is enabled")
+ else:
+ logging.debug("bootflag is NOT enabled")
+ raise VerifyException("Device %s does not have the bootflag set. "
+ "Please enable it to be able to boot." % device)
def mkfs_fat16(device):
device_mountpoint = tempfile.mkdtemp(prefix="grml2usb")
register_tmpfile(device_mountpoint)
try:
- try:
- mount(device, device_mountpoint, "")
-
- # If using --grub-mbr then make sure we install grub in MBR instead of PBR
- if options.grubmbr:
- logging.debug("Using option --grub-mbr ...")
- if device[-1:].isdigit():
- grub_device = re.match(r'(.*?)\d*$', device).group(1)
- else:
- grub_device = device
- else:
- grub_device = device
-
- logging.info("Installing grub as bootloader")
- for opt in ["", "--force"]:
- logging.debug("grub-install --recheck %s --no-floppy --root-directory=%s %s",
- opt, device_mountpoint, grub_device)
- proc = subprocess.Popen(["grub-install", "--recheck", opt, "--no-floppy",
- "--root-directory=%s" % device_mountpoint, grub_device],
- stdout=file(os.devnull, "r+"))
- proc.wait()
- if proc.returncode == 0:
- break
-
- if proc.returncode != 0:
- # raise Exception("error executing grub-install")
- logging.critical("Fatal: error executing grub-install "
- + "(please check the grml2usb FAQ or drop the --grub option)")
- logging.critical("Note: if using grub2 consider using "
- + "the --grub-mbr option as grub considers PBR problematic.")
- cleanup()
- sys.exit(1)
- except CriticalException, error:
- logging.critical("Fatal: %s", error)
+ mount(device, device_mountpoint, "")
+
+ # If using --grub-mbr then make sure we install grub in MBR instead of PBR
+ if options.grubmbr:
+ logging.debug("Using option --grub-mbr ...")
+ grub_device, x = get_device_from_partition(device)
+ else:
+ grub_device = device
+
+ set_rw(device)
+ set_rw(grub_device)
+
+ logging.info("Installing grub as bootloader")
+ for opt in ["", "--force"]:
+ logging.debug("grub-install --recheck %s --no-floppy --root-directory=%s %s",
+ opt, device_mountpoint, grub_device)
+ proc = subprocess.Popen([GRUB_INSTALL, "--recheck", opt,
+ "--no-floppy", "--target=i386-pc",
+ "--root-directory=%s" % device_mountpoint, grub_device],
+ stdout=file(os.devnull, "r+"))
+ proc.wait()
+ if proc.returncode == 0:
+ break
+
+ if proc.returncode != 0:
+ # raise Exception("error executing grub-install")
+ logging.critical("Fatal: error executing grub-install " +
+ "(please check the grml2usb FAQ or drop the --grub option)")
+ logging.critical("Note: if using grub2 consider using " +
+ "the --grub-mbr option as grub considers PBR problematic.")
cleanup()
sys.exit(1)
-
+ except CriticalException as error:
+ logging.critical("Fatal: %s", error)
+ cleanup()
+ sys.exit(1)
finally:
unmount(device_mountpoint, "")
os.rmdir(device_mountpoint)
logging.info("Would install syslinux as bootloader on %s", device)
return 0
+ set_rw(device)
+
# syslinux -d boot/isolinux /dev/sdb1
logging.info("Installing syslinux as bootloader")
logging.debug("syslinux -d boot/syslinux %s", device)
if options.grub:
try:
install_grub(device)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Fatal: %s", error)
cleanup()
sys.exit(1)
else:
try:
install_syslinux(device)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Fatal: %s", error)
cleanup()
sys.exit(1)
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 \"%s\"?)" % mbrtemplate)
+ logging.error('Error installing MBR (either try --syslinux-mbr or '
+ 'install missing file "%s"?)', mbrtemplate)
+ raise CriticalException("%s can not be read." % mbrtemplate)
if partition is not None and ((partition < 0) or (partition > 3)):
- logging.warn("Cannot activate partition %d" % partition)
+ logging.warn("Cannot activate partition %d", partition)
partition = None
if ismirbsdmbr:
tmpf.file.write(mbrcode)
tmpf.file.close()
+ set_rw(device)
+
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+"))
raise Exception("error executing dd (third run)")
del tmpf
+ # make sure we sync filesystems before returning
+ proc = subprocess.Popen(["sync"])
+ proc.wait()
+
+ set_rw(device)
+
def is_writeable(device):
"""Check if the device is writeable for the current user
if not device:
return False
- #raise Exception("no device for checking write permissions")
if not os.path.exists(device):
return False
for x in file('/proc/mounts').readlines():
if x.startswith(source):
- raise CriticalException("Error executing mount: %s already mounted - " % source
- + "please unmount before invoking grml2usb")
+ raise CriticalException("Error executing mount: %s already mounted - " % source +
+ "please unmount before invoking grml2usb")
if os.path.isdir(source):
logging.debug("Source %s is not a device, therefore not mounting.", source)
return 0
+ set_rw(source)
+
logging.debug("mount %s %s %s", mount_options, source, target)
proc = subprocess.Popen(["mount"] + list(mount_options) + [source, target])
proc.wait()
squashfs = search_file(grml_flavour + '.squashfs', iso_mount)
if squashfs is None:
- logging.critical("Fatal: squashfs file not found"
- ", please check that your iso is not corrupt")
- raise CriticalException("error locating squashfs file")
+ logging.error("error locating squashfs file")
+ raise CriticalException("squashfs file not found, please check that your iso is not corrupt")
else:
squashfs_target = target + '/live/' + grml_flavour + '/'
execute(mkdir, squashfs_target)
if filesystem_module:
break
if filesystem_module is None:
- logging.critical("Fatal: filesystem.module not found")
- raise CriticalException("error locating filesystem.module file")
+ logging.error("error locating filesystem.module file")
+ raise CriticalException("filesystem.module not found")
else:
exec_rsync(filesystem_module, squashfs_target + 'filesystem.module')
kernel = search_file('linux26', iso_mount)
if kernel is None:
- logging.critical("Fatal: kernel not found")
- raise CriticalException("error locating kernel file")
+ logging.error("error locating kernel file")
+ raise CriticalException("Kernel not found")
source = os.path.dirname(kernel) + '/'
dest = target + '/' + os.path.dirname(kernel).replace(iso_mount, '') + '/'
for line in fileinput.input([target_grml_version_file], inplace=1):
flavour = get_flavour(line)
if flavour in iso_versions.keys():
- print iso_versions.pop(flavour)
+ print(iso_versions.pop(flavour))
else:
- print line.strip()
+ print(line.strip())
fileinput.close()
target_file = open(target_grml_version_file, 'a')
logging.debug("Found source file" + sourcefile)
os.path.isfile(ops) and f.write("source " + sourcefile + "\n")
- f.write("source /boot/grub/adddons.cfg\n")
+ f.write("source /boot/grub/addons.cfg\n")
f.write("source /boot/grub/footer.cfg\n")
f.close()
(source_dir, defaults_file) = get_defaults_file(iso_mount, grml_flavour, "grml.cfg")
if not source_dir:
- logging.critical("Fatal: file default.cfg could not be found.")
- logging.critical("Note: this grml2usb version requires an ISO generated by grml-live >=0.9.24 ...")
- logging.critical(" ... either use grml releases >=2009.10 or switch to an older grml2usb version.")
- raise
+ raise CriticalException(
+ "file default.cfg could not be found.\n"
+ "Note: this grml2usb version requires an ISO generated by grml-live >=0.9.24 ...\n"
+ " ... either use grml releases >=2009.10 or switch to an older grml2usb version.")
if not os.path.exists(iso_mount + '/boot/grub/footer.cfg'):
logging.warning("Warning: Grml releases older than 2011.12 support only one flavour in grub.")
for expr in name, 'distri.cfg', \
- defaults_file, 'grml.png', 'hd.cfg', 'isolinux.cfg', 'isolinux.bin', \
- 'isoprompt.cfg', 'options.cfg', \
- 'prompt.cfg', 'vesamenu.cfg', 'grml.png', '*.c32':
+ defaults_file, 'grml.png', 'hd.cfg', 'isolinux.cfg', 'isolinux.bin', \
+ 'isoprompt.cfg', 'options.cfg', \
+ 'prompt.cfg', 'vesamenu.cfg', 'grml.png', '*.c32':
glob_and_copy(iso_mount + source_dir + expr, syslinux_target)
for filename in glob.glob1(syslinux_target, "*.c32"):
try:
copy_system_files(grml_flavour, iso_mount, target)
copy_grml_files(grml_flavour, iso_mount, target)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Execution failed: %s", error)
sys.exit(1)
proc.wait()
+def get_device_from_partition(partition):
+ device = partition
+ partition_number = None
+ if partition[-1].isdigit() and not RE_LOOP_DEVICE.match(partition):
+ m = RE_P_PARTITION.match(partition) or RE_PARTITION.match(partition)
+ if m:
+ device = m.group(1)
+ partition_number = int(m.group(2)) - 1
+ return (device, partition_number)
+
+
def get_flavour(flavour_str):
"""Returns the flavour of a grml version string
"""
version_files = search_file('grml-version', mountpath, lst_return=True)
if not version_files:
- logging.critical("Error: could not find grml-version file.")
- raise
+ if mountpath.startswith("/lib/live/mount/medium"):
+ logging.critical("Error: could not find grml-version file.")
+ logging.critical("Looks like your system is running from RAM but required files are not available.")
+ logging.critical("Please either boot without toram=... or use boot option toram instead of toram=...")
+ else:
+ logging.critical("Error: could not find grml-version file.")
+ cleanup()
+ sys.exit(1)
flavours = []
logging.debug("version_files = %s", version_files)
tmpfile = open(version_file, 'r')
for line in tmpfile.readlines():
flavours.append(get_flavour(line))
- except TypeError, e:
- raise
- except Exception, e:
- logging.critical("Unexpected error: %s", e)
- raise
finally:
if tmpfile:
tmpfile.close()
line = line.rstrip() + r' bootid=%s %s ' % (UUID, bootopt)
for regex in remove_regexes:
line = regex.sub(' ', line)
- print line
+ print(line)
fileinput.close()
def add_entry_if_not_present(filename, entry):
"""Write entry into filename if entry is not already in the file
- @filanme: name of the file
+ @filename: name of the file
@entry: data to write to the file
"""
data = open(filename, "a+")
# install main configuration only *once*, no matter how many ISOs we have:
syslinux_config_file = open(syslinux_cfg, 'w')
- syslinux_config_file.write("TIMEOUT 300\n")
+ syslinux_config_file.write("timeout 300\n")
syslinux_config_file.write("include vesamenu.cfg\n")
syslinux_config_file.close()
else:
try:
handle_syslinux_config(grml_flavour, target)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Fatal: %s", error)
sys.exit(1)
else:
try:
handle_grub_config(grml_flavour, device, target)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Fatal: %s", error)
sys.exit(1)
iso_mountpoint = image
remove_image_mountpoint = False
if os.path.isdir(image):
- logging.info("Using %s as install base", image)
+ if options.force or os.path.exists(os.path.join(image, 'live')):
+ logging.info("Using %s as install base", image)
+ else:
+ q = raw_input("%s does not look like a Grml system. "
+ "Do you really want to use this image? y/N " % image)
+ if q.lower() == 'y':
+ logging.info("Using %s as install base", image)
+ else:
+ logging.info("Skipping install base %s", image)
else:
logging.info("Using ISO %s", image)
- iso_mountpoint = tempfile.mkdtemp(prefix="grml2usb", dir=options.tmpdir)
+ iso_mountpoint = tempfile.mkdtemp(prefix="grml2usb", dir=os.path.abspath(options.tmpdir))
register_tmpfile(iso_mountpoint)
remove_image_mountpoint = True
try:
mount(image, iso_mountpoint, ["-o", "loop,ro", "-t", "iso9660"])
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Fatal: %s", error)
sys.exit(1)
if remove_image_mountpoint:
try:
remove_mountpoint(iso_mountpoint)
- except CriticalException, error:
- logging.critical("Fatal: %s", error)
+ except CriticalException as error:
cleanup()
+ raise
def install_grml(mountpoint, device):
- """Main logic for copying files of the currently running grml system.
+ """Main logic for copying files of the currently running Grml system.
- @mountpoin: directory where currently running live system resides (usually /live/image)
+ @mountpoint: directory where currently running live system resides (usually /lib/live/mount/medium)
@device: partition where the specified ISO should be installed to"""
device_mountpoint = device
if os.path.isdir(device):
- logging.info("Specified device is not a directory, therefore not mounting.")
+ logging.info("Specified device is a directory, therefore not mounting.")
remove_device_mountpoint = False
else:
device_mountpoint = tempfile.mkdtemp(prefix="grml2usb")
remove_device_mountpoint = True
try:
check_for_fat(device)
+ if not options.skipbootflag:
+ check_boot_flag(device)
mount(device, device_mountpoint, ['-o', 'utf8,iocharset=iso8859-1'])
- except CriticalException, error:
- try:
- mount(device, device_mountpoint, "")
- except CriticalException, error:
- logging.critical("Fatal: %s", error)
- raise
+ except CriticalException as error:
+ mount(device, device_mountpoint, "")
try:
grml_flavours = identify_grml_flavour(mountpoint)
for flavour in set(grml_flavours):
def remove_mountpoint(mountpoint):
- """remove a registred mountpoint
+ """remove a registered mountpoint
"""
try:
if os.path.isdir(mountpoint):
os.rmdir(mountpoint)
unregister_tmpfile(mountpoint)
- except CriticalException, error:
- logging.critical("Fatal: %s", error)
+ except CriticalException as error:
cleanup()
+ raise
def handle_mbr(device):
logging.info("Would install MBR")
return 0
- if device[-1:].isdigit():
- mbr_device = re.match(r'(.*?)\d*$', device).group(1)
- partition_number = int(device[-1:]) - 1
- else:
+ mbr_device, partition_number = get_device_from_partition(device)
+ if partition_number is None:
logging.warn("Could not detect partition number, not activating partition")
- partition_number = None
# if we get e.g. /dev/loop1 as device we don't want to put the MBR
# into /dev/loop of course, therefore use /dev/loop1 as mbr_device
mbrcode = GRML2USB_BASE + '/mbr/mbrldr'
if options.syslinuxmbr:
- mbrcode = '/usr/lib/syslinux/mbr.bin'
+ mbrcode = ""
+ mbr_locations = ('/usr/lib/syslinux/mbr.bin',
+ '/usr/lib/syslinux/bios/mbr.bin',
+ '/usr/share/syslinux/mbr.bin')
+ for mbrpath in mbr_locations:
+ if os.path.isfile(mbrpath):
+ mbrcode = mbrpath
+ break
+
+ if mbrcode is "":
+ str_locations = " or ".join(['"%s"' % l for l in mbr_locations])
+ logging.error('Cannot find syslinux MBR, install it at %s)',
+ str_locations)
+ raise CriticalException("syslinux MBR can not be found at %s."
+ % str_locations)
elif options.mbrmenu:
mbrcode = GRML2USB_BASE + '/mbr/mbrldr'
try:
install_mbr(mbrcode, mbr_device, partition_number, True)
- except IOError, error:
- logging.critical("Execution failed: %s", error)
- sys.exit(1)
- except Exception, error:
+ except (IOError, Exception) as error:
logging.critical("Execution failed: %s", error)
sys.exit(1)
sys.exit(1)
if options.force:
- print "Forcing mkfs.fat16 on %s as requested via option --force." % device
+ print("Forcing mkfs.fat16 on %s as requested via option --force." % device)
else:
# make sure the user is aware of what he is doing
f = raw_input("Are you sure you want to format the specified partition with fat16? y/N ")
sys.exit(1)
try:
mkfs_fat16(device)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Execution failed: %s", error)
sys.exit(1)
if device is not None and not os.path.isdir(device) and options.syslinux:
try:
check_for_fat(device)
- except CriticalException, error:
+ except CriticalException as error:
logging.critical("Execution failed: %s", error)
sys.exit(1)
+ if options.skipusbcheck:
+ logging.info("Not checking for removable USB device as requested via option --skip-usb-check.")
+ return
+
if not os.path.isdir(device) and not check_for_usbdevice(device) and not options.force:
- print "Warning: the specified device %s does not look like a removable usb device." % 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:
+ if f.lower() != "y":
sys.exit(1)
# 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."
+ 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:
+ if f.lower() != "y":
sys.exit(1)
if options.verbose and options.quiet:
parser.error("please use either verbose (--verbose) or quiet (--quiet) option")
+ FORMAT = "%(message)s"
if options.verbose:
- FORMAT = "Debug: %(asctime)-15s %(message)s"
+ 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 = "%(message)s"
logging.basicConfig(level=logging.INFO, format=FORMAT)
@opts option dict from OptionParser
"""
if opts.grubmbr and not opts.grub:
- logging.critical("Error: --grub-mbr requires --grub option.")
- sys.exit(1)
+ raise CriticalException("--grub-mbr requires --grub option.")
+
+ if opts.copyonly and opts.grub:
+ raise CriticalException("Cannot use --copy-only and --grub at the same time.")
def check_programs():
"""check if all needed programs are installed"""
if options.grub:
- if not which("grub-install"):
- logging.critical("Fatal: grub-install not available (please install the "
- + "grub package or drop the --grub option)")
+ global GRUB_INSTALL
+ GRUB_INSTALL = which("grub-install") or which("grub2-install")
+ if not GRUB_INSTALL:
+ logging.critical("Fatal: grub-install not available (please install the " +
+ "grub package or drop the --grub option)")
sys.exit(1)
if options.syslinux:
if not which("syslinux"):
- logging.critical("Fatal: syslinux not available (please install the "
- + "syslinux package or use the --grub option)")
+ logging.critical("Fatal: syslinux not available (please install the " +
+ "syslinux package or use the --grub option)")
sys.exit(1)
if not which("rsync"):
def load_loop():
"""Runs modprobe loop and throws away it's output"""
+ if not which("modprobe"):
+ logging.critical("Fatal: modprobe not available, can not continue - sorry.")
+ logging.critical("Hint: is /sbin missing in PATH?")
+ sys.exit(1)
+
proc = subprocess.Popen(["modprobe", "loop"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
proc.wait()
def main():
"""Main function [make pylint happy :)]"""
- if options.version:
- print os.path.basename(sys.argv[0]) + " " + PROG_VERSION
- sys.exit(0)
+ try:
+ if options.version:
+ print(os.path.basename(sys.argv[0]) + " " + PROG_VERSION)
+ sys.exit(0)
+
+ if len(args) < 2:
+ parser.error("invalid usage")
- if len(args) < 2:
- parser.error("invalid usage")
+ # log handling
+ handle_logging()
- # log handling
- handle_logging()
+ # make sure we have the appropriate permissions
+ check_uid_root()
- # make sure we have the appropriate permissions
- check_uid_root()
+ check_options(options)
- check_options(options)
+ load_loop()
- load_loop()
+ logging.info("Executing grml2usb version %s", PROG_VERSION)
- logging.info("Executing grml2usb version %s", PROG_VERSION)
+ if options.dryrun:
+ logging.info("Running in simulation mode as requested via option dry-run.")
- if options.dryrun:
- logging.info("Running in simulation mode as requested via option dry-run.")
+ check_programs()
- check_programs()
+ # specified arguments
+ device = os.path.realpath(args[len(args) - 1])
+ isos = args[0:len(args) - 1]
- # specified arguments
- device = os.path.realpath(args[len(args) - 1])
- isos = args[0:len(args) - 1]
+ if not os.path.isdir(device):
+ if device[-1:].isdigit():
+ if int(device[-1:]) > 4 or device[-2:].isdigit():
+ logging.critical("Fatal: installation on partition number >4 not supported. (BIOS won't support it.)")
+ sys.exit(1)
- if not os.path.isdir(device):
- if device[-1:].isdigit():
- if int(device[-1:]) > 4 or device[-2:].isdigit():
- logging.critical("Fatal: installation on partition number >4 not supported. (BIOS won't support it.)")
- sys.exit(1)
+ # provide upgrade path
+ handle_compat_warning(device)
- # provide upgrade path
- handle_compat_warning(device)
+ # check for vfat partition
+ handle_vfat(device)
- # check for vfat partition
- handle_vfat(device)
+ # main operation (like installing files)
+ for iso in isos:
+ install(iso, device)
- # main operation (like installing files)
- for iso in isos:
- install(iso, device)
+ # install mbr
+ is_superfloppy = not device[-1:].isdigit()
+ if is_superfloppy:
+ logging.info("Detected superfloppy format - not installing MBR")
- # install mbr
- is_superfloppy = not device[-1:].isdigit()
- if is_superfloppy:
- logging.info("Detected superfloppy format - not installing MBR")
+ if not options.skipmbr and not os.path.isdir(device) and not is_superfloppy:
+ handle_mbr(device)
- if not options.skipmbr and not os.path.isdir(device) and not is_superfloppy:
- handle_mbr(device)
+ handle_bootloader(device)
- handle_bootloader(device)
+ logging.info("Note: grml flavour %s was installed as the default booting system.", GRML_DEFAULT)
- logging.info("Note: grml flavour %s was installed as the default booting system.", GRML_DEFAULT)
+ for flavour in GRML_FLAVOURS:
+ logging.info("Note: you can boot flavour %s using '%s' on the commandline.", flavour, flavour)
- for flavour in GRML_FLAVOURS:
- logging.info("Note: you can boot flavour %s using '%s' on the commandline.", flavour, flavour)
+ # finally be polite :)
+ logging.info("Finished execution of grml2usb (%s). Have fun with your Grml system.", PROG_VERSION)
- # finally be politely :)
- logging.info("Finished execution of grml2usb (%s). Have fun with your grml system.", PROG_VERSION)
+ except Exception as error:
+ logging.critical("Fatal: %s", str(error))
+ sys.exit(1)
if __name__ == "__main__":
logging.info("Received KeyboardInterrupt")
cleanup()
-## END OF FILE #################################################################
+# END OF FILE ##################################################################
# vim:foldmethod=indent expandtab ai ft=python tw=120 fileencoding=utf-8
projects / grml2usb.git / blobdiff