#!/usr/bin/python -tt # # livecd-creator : Creates Live CD based for Fedora. # # Copyright 2007, Red Hat Inc. # # This program 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; version 2 of the License. # # This program 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 Library General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. import os import os.path import sys import time import optparse import logging import imgcreate class Usage(Exception): def __init__(self, msg = None, no_error = False): Exception.__init__(self, msg, no_error) def parse_options(args): parser = optparse.OptionParser() imgopt = optparse.OptionGroup(parser, "Image options", "These options define the created image.") imgopt.add_option("-c", "--config", type="string", dest="kscfg", help="Path or url to kickstart config file") imgopt.add_option("-b", "--base-on", type="string", dest="base_on", help="Add packages to an existing live CD iso9660 image.") imgopt.add_option("-f", "--fslabel", type="string", dest="fslabel", help="File system label (default based on config name)") imgopt.add_option("", "--title", type="string", dest="title", help="Title used by syslinux.cfg file"), imgopt.add_option("", "--product", type="string", dest="product", help="Product name used in syslinux.cfg boot stanzas and countdown"), # Provided for img-create compatibility imgopt.add_option("-n", "--name", type="string", dest="fslabel", help=optparse.SUPPRESS_HELP) imgopt.add_option("-p", "--plugins", action="store_true", dest="plugins", help="Use yum plugins during image creation", default=False) imgopt.add_option("", "--image-type", type="string", dest="image_type", help=optparse.SUPPRESS_HELP) imgopt.add_option("", "--compression-type", type="string", dest="compress_type", help="Compression type recognized by mksquashfs " "(default xz needs a 2.6.38+ kernel, gzip works " "with all kernels, lzo needs a 2.6.36+ kernel, lzma " "needs custom kernel.) Set to 'None' to force read " "from base_on.", default="xz") imgopt.add_option("", "--releasever", type="string", dest="releasever", default=None, help="Value to substitute for $releasever in kickstart repo urls") parser.add_option_group(imgopt) # options related to the config of your system sysopt = optparse.OptionGroup(parser, "System directory options", "These options define directories used on your system for creating the live image") sysopt.add_option("-t", "--tmpdir", type="string", dest="tmpdir", default="/var/tmp", help="Temporary directory to use (default: /var/tmp)") sysopt.add_option("", "--cache", type="string", dest="cachedir", default=None, help="Cache directory to use (default: private cache") sysopt.add_option("", "--cacheonly", action="store_true", dest="cacheonly", default=False, help="Work offline from cache, use together with --cache (default: False)") sysopt.add_option("", "--nocleanup", action="store_true", dest="nocleanup", default=False, help="Skip cleanup of temporary files") parser.add_option_group(sysopt) imgcreate.setup_logging(parser) # debug options not recommended for "production" images # Start a shell in the chroot for post-configuration. parser.add_option("-l", "--shell", action="store_true", dest="give_shell", help=optparse.SUPPRESS_HELP) # Don't compress the image. parser.add_option("-s", "--skip-compression", action="store_true", dest="skip_compression", help=optparse.SUPPRESS_HELP) parser.add_option("", "--skip-minimize", action="store_true", dest="skip_minimize", help=optparse.SUPPRESS_HELP) (options, args) = parser.parse_args() # Pretend to be a image-creator if called with that name if not options.image_type: if sys.argv[0].endswith('image-creator'): options.image_type = 'image' else: options.image_type = 'livecd' if options.image_type not in ('livecd', 'image'): raise Usage("'%s' is not a recognized image type" % options.image_type) # image-create compatibility: Last argument is kickstart file if len(args) == 1: options.kscfg = args.pop() if len(args): raise Usage("Extra arguments given") if not options.kscfg or not os.path.exists(options.kscfg): raise Usage("Kickstart file must be provided") if options.base_on and not os.path.isfile(options.base_on): raise Usage("Image file '%s' does not exist" %(options.base_on,)) if options.image_type == 'livecd': if options.fslabel and len(options.fslabel) > imgcreate.FSLABEL_MAXLEN: raise Usage("CD labels are limited to 32 characters") if options.fslabel and options.fslabel.find(" ") != -1: raise Usage("CD labels cannot contain spaces.") return options def main(): try: options = parse_options(sys.argv[1:]) except Usage, (msg, no_error): if no_error: out = sys.stdout ret = 0 else: out = sys.stderr ret = 2 if msg: print >> out, msg return ret if os.geteuid () != 0: print >> sys.stderr, "You must run %s as root" % sys.argv[0] return 1 if options.fslabel: fslabel = options.fslabel name = fslabel else: name = imgcreate.build_name(options.kscfg, options.image_type + "-") fslabel = imgcreate.build_name(options.kscfg, options.image_type + "-", maxlen = imgcreate.FSLABEL_MAXLEN, suffix = "%s-%s" %(os.uname()[4], time.strftime("%Y%m%d%H%M"))) logging.info("Using label '%s' and name '%s'" % (fslabel, name)) if options.title: title = options.title else: try: title = " ".join(name.split("-")[:2]) title = title.title() except: title = "Linux" if options.product: product = options.product else: try: product = " ".join(name.split("-")[:2]) product = product.title() except: product = "Linux" logging.info("Using title '%s' and product '%s'" % (title, product)) ks = imgcreate.read_kickstart(options.kscfg) if not ks.handler.repo.seen: print >> sys.stderr, "Kickstart (%s) must have at least one repository." % (options.kscfg) return 1 try: if options.image_type == 'livecd': creator = imgcreate.LiveImageCreator(ks, name, fslabel=fslabel, releasever=options.releasever, tmpdir=os.path.abspath(options.tmpdir), useplugins=options.plugins, title=title, product=product, cacheonly=options.cacheonly, docleanup=not options.nocleanup) elif options.image_type == 'image': creator = imgcreate.LoopImageCreator(ks, name, fslabel=fslabel, releasever=options.releasever, useplugins=options.plugins, tmpdir=os.path.abspath(options.tmpdir), cacheonly=options.cacheonly, docleanup=not options.nocleanup) except imgcreate.CreatorError as e: logging.error(u"%s creation failed: %s", options.image_type, e) return 1 creator.compress_type = options.compress_type creator.skip_compression = options.skip_compression creator.skip_minimize = options.skip_minimize if options.cachedir: options.cachedir = os.path.abspath(options.cachedir) try: creator.mount(options.base_on, options.cachedir) creator.install() creator.configure() if options.give_shell: print "Launching shell. Exit to continue." print "----------------------------------" creator.launch_shell() creator.unmount() creator.package() except imgcreate.CreatorError, e: logging.error(u"Error creating Live CD : %s" % e) return 1 finally: creator.cleanup() return 0 if __name__ == "__main__": sys.exit(main())