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#!/usr/bin/env python
#
# live_part.py
#
# (c) Copyright 2009 - 2010 Michael Towers (larch42 at googlemail dot com)
#
# This file is part of the larch project.
#
# larch is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# larch is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with larch; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#----------------------------------------------------------------------------
# 2010.07.18
# This is a command line script to prepare a larch live medium from an
# already larchified Arch Linux installation, or another larch medium.
# Parameters are passed as options and arguments.
import os
from config import *
from backend import *
from media_common import *
def build_partition(options, devicename):
"""Install the larchified system to the partition specified by the
options.
'devicename' is the name (e.g. 'sdb1', without '/dev/') of the
partition to receive the larch image
"""
medium = Medium(options)
ipath = medium.chrootpath
build = medium.build
# Check and format device
device = '/dev/' + devicename
if not os.path.exists(device):
errout(_("Invalid device: %s") % device)
if options.format:
# label
if options.syslinux:
labellength = 11
opt = 'n'
else:
labellength = 16
opt = 'L'
l = ('-%s "%s"' % (opt, check_label(options.label, labellength))
if options.label else '')
# set partition type, reload partition table, and format
if not (chroot(ipath, 'bash -c "echo -e \',,%s,*\\n\' |'
' sfdisk --no-reread %s -N%s"' %
('0c' if options.syslinux else 'L',
device[:8], device[8:]), ['dev'])
and chroot(ipath, 'partprobe %s' % device[:8], ['dev'])
and chroot(ipath, 'mkfs.%s %s %s' %
('vfat' if options.syslinux else 'ext2', l, device),
['dev'])):
errout(_("Couldn't format %s") % device)
# Need to get the label - if not formatting (an option for experts)
# it is probably not a good idea to change the volume label, so
# use the old one.
label = medium.get_device_label(device)
# Check device format
ok, lines = runcmd('blkid -c /dev/null -o value -s TYPE %s' % device)
if not ok:
errout(_("Couldn't get format information for %s") % device)
fstype = lines[0]
if options.syslinux:
if fstype != 'vfat':
errout(_("syslinux is only supported on vfat"))
elif not fstype.startswith('ext'):
errout(_("GRUB is at present only supported on extN"))
# Rename the syslinux boot directory if necessary
if os.path.isdir(build + '/boot/isolinux'):
runcmd('mv %s/boot/isolinux %s/boot/syslinux' % (build, build))
# Write bootloader configuration file
bootconfig(build, options.syslinux, label, device, options.detection)
# Mount partition and remove larch and boot dirs
runcmd('rm -rf %s' % MP)
runcmd('mkdir -p %s' % MP)
if not mount(device, MP):
errout(_("Couldn't mount larch partition, %s") % device)
runcmd('rm -rf %s/larch' % MP)
runcmd('rm -rf %s/boot' % MP)
# Copy files to device
runcmd('cp -r %s/larch %s' % (medium.medium_dir, MP))
runcmd('cp -r %s/boot %s' % (build, MP))
medium.unmount()
# To boot in 'search' mode the file larch/larchboot must be present
# (though at present this is only relevant for partitions, CDs will
# be booted even without this file).
# To enable session saving the file larch/save must be present
# (only relevant if not building an iso).
runcmd('bash -c "rm -f %s/larch/{larchboot,save}"' % MP)
if options.larchboot:
add_larchboot(MP)
if options.nosave:
if options.save:
errout(_("Option '-a' conflicts with option '-A'"))
ssave = False
else:
ssave = not os.path.isfile(MP + '/larch/nosave')
if options.save or ssave:
writefile("The presence of the file 'larch/save'"
" enables session saving.\n", MP + '/larch/save')
# Unmount partition
unmount(MP)
# Now set up bootloader in MBR
if options.mbr:
if options.syslinux:
runcmd('dd if=%s/boot/syslinux/mbr.bin of=%s'
% (build, device[:8]))
chroot(ipath, 'syslinux %s' % device, ('dev', 'proc'))
else:
script('larch-mbr-grub %s %s' % (ipath if ipath else '/', device))
runcmd('rm -rf %s' % build)
comment(" *** %s ***" % (_("%s was successfully written") % device))
if __name__ == '__main__':
start_translator()
from optparse import OptionParser, OptionGroup
parser = OptionParser(usage=_("usage: %prog [options] partition"
" (e.g. sdb1)"))
parser.add_option("-p", "--profile", action="store", type="string",
default="", dest="profile",
help=_("Profile: 'user:profile-name' or path to profile directory"
" (conflicts with -S)"))
parser.add_option("-S", "--source", action="store", type="string",
default="", dest="source",
help=_("Source: path to larch medium image (conflicts with -p)."
" It can also be a device ('/dev/...') or an 'iso' file."))
parser.add_option("-i", "--installation-dir", action="store", type="string",
default="", dest="idir",
help=_("Path to larchified directory (default %s)") % INSTALLATION)
parser.add_option("-s", "--slave", action="store_true", dest="slave",
default=False, help=_("Run as a slave from a controlling program"
" (e.g. from a gui)"))
parser.add_option("-q", "--quiet", action="store_true", dest="quiet",
default=False, help=_("Suppress output messages, except errors"
" (no effect if -s specified)"))
parser.add_option("-f", "--force", action="store_true", dest="force",
default=False, help=_("Don't ask for confirmation"))
parser.add_option("-d", "--detect", action="store", type="string",
default="label", dest="detection",
help=(_("Method for boot partition detection: %s (default: label)")
% detection_methods))
parser.add_option("-b", "--syslinux", action="store_true", dest="syslinux",
default=False, help=_("Use the syslinux bootloader"
" (the default is GRUB)"))
parser.add_option("-l", "--label", action="store", type="string",
default=LABEL, dest="label",
help=_("Volume label for boot partition (default %s)")
% LABEL)
parser.add_option("-n", "--nosearchboot", action="store_false",
dest="larchboot", default=True,
help=_("Don't generate 'larch/larchboot' file"))
parser.add_option("-a", "--save", action="store_true",
dest="save", default=False,
help=_("Override profile larch/nosave"
" (force enable session saving) - conflicts with '-A'"))
parser.add_option("-A", "--nosave", action="store_true",
dest="nosave", default=False,
help=_("Force disabling of session saving - conflicts with '-a'"))
parser.add_option("-x", "--noformat", action="store_false",
dest="format", default=True,
help=_("Don't format partition (only for experts!)"))
parser.add_option("-m", "--noboot", action="store_false",
dest="mbr", default=True,
help=_("Don't install the bootloader (to the MBR)"))
parser.add_option("-C", "--chroot", action="store_true",
dest="chroot", default=False,
help=_("Use chroot for build (default when -S not specified)"))
parser.add_option("-c", "--nochroot", action="store_true",
dest="nochroot", default=False,
help=_("Don't use chroot for build (default when -S specified)"))
(options, args) = parser.parse_args()
# To avoid error messages
options.testmedium = False
options.setdir = ''
if not args:
print _("You must specify the partition to receive larch\n")
parser.print_help()
sys.exit(1)
if os.getuid() != 0:
print _("This application must be run as root")
sys.exit(1)
init('live_part', options)
build_partition(options, devicename=args[0])
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