UUID = None
SYSLINUX_LIBS = "/usr/lib/syslinux/"
+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):
"""A helper function for printing a warning about deprecated option
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="install syslinux bootloader (deprecated as it's the default)")
parser.add_option("--syslinux-mbr", dest="syslinuxmbr", action="store_true",
help="install syslinux master boot record (MBR) instead of default")
+parser.add_option("--tmpdir", dest="tmpdir", default="/tmp",
+ help="directory to be used for temporary files")
parser.add_option("--verbose", dest="verbose", action="store_true",
help="enable verbose mode")
parser.add_option("-v", "--version", dest="version", action="store_true",
class CriticalException(Exception):
- """Throw critical exception if the exact error is not known but fatal."
+ """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"""
pass
return ('', '')
-def search_file(filename, search_path='/bin' + os.pathsep + '/usr/bin'):
+def search_file(filename, search_path='/bin' + os.pathsep + '/usr/bin', lst_return=False):
"""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
+ @search_path: path where searching for the specified filename
+ @lst_return: return list of matching files instead one file"""
paths = search_path.split(os.pathsep)
current_dir = '' # make pylint happy :)
+ retval = []
def match_file(cwd):
"""Helper function ffor testing if specified file exists in cwd
for path in paths:
current_dir = path
if match_file(current_dir):
- file_found = 1
- break
+ retval.append(os.path.abspath(os.path.join(current_dir, filename)))
+ if not lst_return:
+ break
# pylint: disable-msg=W0612
for current_dir, directories, files in os.walk(path):
if match_file(current_dir):
- file_found = 1
- break
- if file_found:
- return os.path.abspath(os.path.join(current_dir, filename))
+ retval.append(os.path.abspath(os.path.join(current_dir, filename)))
+ if not lst_return:
+ break
+ if lst_return:
+ return retval
+ elif retval:
+ return retval[0]
else:
return None
sys.exit("Error: please run this script with uid 0 (root).")
+def check_boot_flag(device):
+ boot_dev, x = get_device_from_partition(device)
+
+ with open(boot_dev, 'r') as image:
+ data = image.read(512)
+ bootcode = data[440:]
+ if 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." % boot_dev)
+
+
def mkfs_fat16(device):
"""Format specified device with VFAT/FAT16 filesystem.
# 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
+ grub_device, x = get_device_from_partition(device)
else:
grub_device = device
proc = subprocess.Popen(["umount"] + list(unmount_options) + [target])
proc.wait()
if proc.returncode != 0:
+ logging.critical("Error executing umount")
raise Exception("Error executing umount")
else:
logging.debug("unregister_mountpoint(%s)", target)
# grub all-in-one image
handle_addon_copy('allinone.img', addons, iso_mount)
- # bsd imag
+ # bsd image
handle_addon_copy('bsd4grml', addons, iso_mount)
+ # DOS image
handle_addon_copy('balder10.imz', addons, iso_mount)
- # install hdt and pci.ids only when using syslinux (grub doesn't support it)
- if options.syslinux:
- # hdt (hardware detection tool) image
- hdtimg = search_file('hdt.c32', iso_mount)
- if hdtimg:
- exec_rsync(hdtimg, addons + '/hdt.c32')
-
- # pci.ids file
- picids = search_file('pci.ids', iso_mount)
- if picids:
- exec_rsync(picids, addons + '/pci.ids')
+ # syslinux + pci.ids for hdt
+ for expr in '*.c32', 'pci.ids':
+ glob_and_copy(iso_mount + '/boot/addons/' + expr, addons)
# memdisk image
handle_addon_copy('memdisk', addons, iso_mount)
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.")
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.")
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)
+ if not m:
+ m = 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
"""
@mountpath: path where the grml ISO is mounted to
@return: name of grml-flavour"""
- version_file = search_file('grml-version', mountpath)
+ version_files = search_file('grml-version', mountpath, lst_return=True)
- if version_file == "":
- logging.critical("Error: could not find grml-version file.")
- raise
+ if not version_files:
+ 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=...")
+ cleanup()
+ sys.exit(1)
+ else:
+ logging.critical("Error: could not find grml-version file.")
+ cleanup()
+ sys.exit(1)
flavours = []
- tmpfile = None
- try:
- 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()
+ logging.debug("version_files = %s", version_files)
+ for version_file in version_files:
+ tmpfile = None
+ try:
+ 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()
return flavours
logging.info("Using %s as install base", image)
else:
logging.info("Using ISO %s", image)
- iso_mountpoint = tempfile.mkdtemp(prefix="grml2usb")
+ iso_mountpoint = tempfile.mkdtemp(prefix="grml2usb", dir=os.path.abspath(options.tmpdir))
register_tmpfile(iso_mountpoint)
remove_image_mountpoint = True
try:
def install_grml(mountpoint, device):
"""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)
+ check_boot_flag(device)
mount(device, device_mountpoint, ['-o', 'utf8,iocharset=iso8859-1'])
+ except VerifyException, error:
+ logging.critical("Fatal: %s", error)
+ raise
except CriticalException, error:
try:
mount(device, device_mountpoint, "")
def remove_mountpoint(mountpoint):
- """remove a registred mountpoint
+ """remove a registered mountpoint
"""
try:
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
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()