# License: This file is licensed under the GPL v2 or any later version.
################################################################################
+# TODO:
+# * write error messages to stderr
+# * log wrapper (log important messages to syslog, depending on loglevel)
+# * trap handling (umount devices when interrupting?)
+
prog_version = "0.0.1"
-import os, sys
+import os, re, subprocess, sys
from optparse import OptionParser
# cmdline parsing {{{
-usage = "usage: %prog [options] arg1 arg2"
+usage = "Usage: %prog [options] <ISO[s]> <partition>\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,\n\
+syslinux (just run 'aptitude install syslinux' on Debian-based systems)\n\
+and root access."
parser = OptionParser(usage=usage)
parser.add_option("--bootoptions", dest="bootoptions", action="store", type="string",
help="install 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")
+parser.add_option("--uninstall", dest="uninstall", action="store_true",
+ help="remove grml ISO files")
parser.add_option("--verbose", dest="verbose", action="store_true",
help="enable verbose mode")
parser.add_option("-v", "--version", dest="version", action="store_true",
(options, args) = parser.parse_args()
# }}}
-# FIXME: implement argument handling
+# wrapper functions {{{
+# TODO: implement argument handling
def execute(command):
"""Wrapper for executing a command. Either really executes
the command (default) or when using --dry-run commandline option
else:
print "executing %s" % command
+def which(program):
+ def is_exe(fpath):
+ return os.path.exists(fpath) and os.access(fpath, os.X_OK)
+
+ fpath, fname = os.path.split(program)
+ 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
+
+ return None
+# }}}
+
+
+def check_uid_root():
+ """Check for root permissions"""
+ if not os.geteuid()==0:
+ sys.exit("Error: please run this script with uid 0 (root).")
+
+
def install_syslinux(device):
"""Install syslinux on specified device."""
print("syslinux %s") % device
+
def install_grub(device):
"""Install grub on specified device."""
print("grub-install %s") % device
-def install_bootloader(device):
- """Install bootloader on specified device."""
+
+def install_bootloader(partition):
+ """Install bootloader on device."""
+ # 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:
install_syslinux(device)
-def check_uid_root():
- """Check for root permissions"""
- if not os.geteuid()==0:
- sys.exit("Error: please run this script with uid 0 (root).")
+
+def install_mbr(target):
+ """Install a default master boot record on given target"""
+ print("TODO")
+
+
+def loopback_mount(iso, target):
+ """Loopback mount specified ISO on given target"""
+ print("mount -o loop %s %s") % (iso, target)
+
+
+def check_for_vat(partition):
+ """Check whether specified partition is VFAT/FAT16 filesystem"""
+ 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:
+ print("failed to read device %s - wrong UID / permissions?") % partition
+ return 1
+
+ if filesystem != "vfat":
+ return(1)
+
+ # TODO: check for ID_FS_VERSION=FAT16?
+
+ except OSError:
+ print("Sorry, /lib/udev/vol_id not available.")
+ return 1
+
+def copy_grml_files(target):
+ """Copy files from ISO on given target"""
+ print("TODO")
+
+
+def uninstall_files(device):
+ print("TODO")
+
def main():
if options.version:
device = args[len(args) - 1]
isos = args[0:len(args) - 1]
- # FIXME: check for valid blockdevice
- if device is not None:
- install_bootloader(device)
-
+ if not which("syslinux2"):
+ print("Sorry, syslinux not available. Exiting.")
+ print("Please install syslinux or consider using the --grub option.")
+ sys.exit(1)
+
+ # TODO check for valid blockdevice, vfat and mount functions
+ # if device is not None:
+ # check_for_vat(device)
+ # mount_target(partition)
+
+ # TODO it doesn't need to be a ISO, could be /live/image as well!
for iso in isos:
print("iso = %s") % iso
+ # loopback_mount(iso)
+ # copy_grml_files(iso, target)
+ # loopback_unmount(iso)
+
+ if options.mbr:
+ print("would install MBR now")
+
+ install_bootloader(device)
if __name__ == "__main__":
main()