lorax/src/sbin/livemedia-creator

#!/usr/bin/python3
#
# Live Media Creator
#
# Copyright (C) 2011-2015  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; either version 2 of the License, or
# (at your option) any later version.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Author(s): Brian C. Lane <bcl@redhat.com>
#
import logging
log = logging.getLogger("livemedia-creator")

import os
import sys
import tempfile
import subprocess
import shutil
import hashlib
import glob
import json
from math import ceil
import socket
import selinux

# Use pykickstart to calculate disk image size
from pykickstart.parser import KickstartParser
from pykickstart.version import makeVersion
from pykickstart.constants import KS_SHUTDOWN

# Use Mako templates for appliance builder descriptions
from mako.template import Template
from mako.exceptions import text_error_template

# Use the Lorax treebuilder branch for iso creation
from pylorax import ArchData, setup_logging, find_templates
from pylorax.base import DataHolder
from pylorax.treebuilder import TreeBuilder, RuntimeBuilder, udev_escape
from pylorax.treebuilder import findkernels
from pylorax.sysutils import joinpaths, remove
from pylorax.imgutils import PartitionMount, mksparse, mkext4img, loop_detach
from pylorax.imgutils import get_loop_name, dm_detach, mount, umount, Mount
from pylorax.imgutils import mksquashfs, mkqemu_img, mktar, mkrootfsimg
from pylorax.imgutils import copytree, mkcpio
from pylorax.executils import execWithRedirect, execReadlines, runcmd
from pylorax.monitor import LogMonitor
from pylorax.mount import IsoMountpoint
from pylorax.cmdline import lmc_parser

# Default parameters for rebuilding initramfs, override with --dracut-args
DRACUT_DEFAULT = ["--xz", "--add", "livenet dmsquash-live convertfs pollcdrom qemu qemu-net",
                  "--omit", "plymouth", "--no-hostonly", "--debug", "--no-early-microcode"]

ROOT_PATH = "/mnt/sysimage/"
RUNTIME = "images/install.img"


class InstallError(Exception):
    pass


class FakeDNF(object):
    """
    A minimal DNF object suitable for passing to RuntimeBuilder

    lmc uses RuntimeBuilder to run the arch specific iso creation
    templates, so the the installroot config value is the important part of
    this. Everything else should be a nop.
    """
    def __init__(self, conf):
        self.conf = conf

    def reset(self):
        pass


def find_free_port(start=5900, end=5999, host="127.0.0.1"):
    """ Return first free port in range.

    :param int start: Starting port number
    :param int end: Ending port number
    :param str host: Host IP to search
    :returns: First free port or -1 if none found
    :rtype: int
    """
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    for port in range(start, end+1):
        try:
            s.bind((host, port))
            s.close()
            return port
        except OSError:
            pass

    return -1


def append_initrd(initrd, files):
    """ Append files to an initrd.

    :param str initrd: Path to initrd
    :param list files: list of file paths to add
    :returns: Path to a new initrd
    :rtype: str

    The files are added to the initrd by creating a cpio image
    of the files (stored at /) and writing the cpio to the end of a
    copy of the initrd.

    The initrd is not changed, a copy is made before appending the
    cpio archive.
    """
    qemu_initrd = tempfile.mktemp(prefix="lmc-initrd-", suffix=".img")
    shutil.copy2(initrd, qemu_initrd)
    ks_dir = tempfile.mkdtemp(prefix="lmc-ksdir-")
    for ks in files:
        shutil.copy2(ks, ks_dir)
    ks_initrd = tempfile.mktemp(prefix="lmc-ks-", suffix=".img")
    mkcpio(ks_dir, ks_initrd)
    shutil.rmtree(ks_dir)
    with open(qemu_initrd, "ab") as initrd_fp:
        with open(ks_initrd, "rb") as ks_fp:
            while True:
                data = ks_fp.read(1024**2)
                if not data:
                    break
                initrd_fp.write(data)
    os.unlink(ks_initrd)

    return qemu_initrd


class QEMUInstall(object):
    """
    Run qemu using an iso and a kickstart
    """
    # Mapping of arch to qemu command
    QEMU_CMDS = {"x86_64":  "qemu-system-x86_64",
                 "i386":    "qemu-system-i386",
                 "arm":     "qemu-system-arm",
                 "aarch64": "qemu-system-aarch64",
                 "ppc":     "qemu-system-ppc",
                 "ppc64":   "qemu-system-ppc64"
                }

    def __init__(self, opts, iso, ks_paths, disk_img, img_size=2048,
                 kernel_args=None, memory=1024, vcpus=None, vnc=None, arch=None,
                 log_check=None, virtio_host="127.0.0.1", virtio_port=6080,
                 image_type=None, boot_uefi=False, ovmf_path=None):
        """
        Start the installation

        :param iso: Information about the iso to use for the installation
        :type iso: IsoMountpoint
        :param list ks_paths: Paths to kickstart files. All are injected, the
           first one is the one executed.
        :param str disk_img: Path to a disk image, created it it doesn't exist
        :param int img_size: The image size, in MiB, to create if it doesn't exist
        :param str kernel_args: Extra kernel arguments to pass on the kernel cmdline
        :param int memory: Amount of RAM to assign to the virt, in MiB
        :param int vcpus: Number of virtual cpus
        :param str vnc: Arguments to pass to qemu -display
        :param str arch: Optional architecture to use in the virt
        :param log_check: Method that returns True if the installation fails
        :type log_check: method
        :param str virtio_host: Hostname to connect virtio log to
        :param int virtio_port: Port to connect virtio log to
        :param str image_type: Type of qemu-img disk to create, or None.
        :param bool boot_uefi: Use OVMF to boot the VM in UEFI mode
        :param str ovmf_path: Path to the OVMF firmware
        """
        # Lookup qemu-system- for arch if passed, or try to guess using host arch
        qemu_cmd = [self.QEMU_CMDS.get(arch or os.uname().machine, "qemu-system-"+os.uname().machine)]
        if not os.path.exists("/usr/bin/"+qemu_cmd[0]):
            raise InstallError("%s does not exist, cannot run qemu" % qemu_cmd[0])

        qemu_cmd += ["-nodefconfig"]
        qemu_cmd += ["-m", str(memory)]
        if vcpus:
            qemu_cmd += ["-smp", str(vcpus)]

        if not opts.no_kvm and os.path.exists("/dev/kvm"):
            qemu_cmd += ["--machine", "accel=kvm"]

        # Copy the initrd from the iso, create a cpio archive of the kickstart files
        # and append it to the temporary initrd.
        qemu_initrd = append_initrd(iso.initrd, ks_paths)
        qemu_cmd += ["-kernel", iso.kernel]
        qemu_cmd += ["-initrd", qemu_initrd]

        # Add the disk and cdrom
        if not os.path.isfile(disk_img):
            mksparse(disk_img, img_size * 1024**2)
        drive_args = "file=%s" % disk_img
        drive_args += ",cache=unsafe,discard=unmap"
        if image_type:
            drive_args += ",format=%s" % image_type
        else:
            drive_args += ",format=raw"
        qemu_cmd += ["-drive", drive_args]

        drive_args = "file=%s,media=cdrom,readonly=on" % iso.iso_path
        qemu_cmd += ["-drive", drive_args]

        # Setup the cmdline args
        # ======================
        cmdline_args = "ks=file:/%s" % os.path.basename(ks_paths[0])
        cmdline_args += " inst.stage2=hd:LABEL=%s" % udev_escape(iso.label)
        if opts.proxy:
            cmdline_args += " inst.proxy=%s" % opts.proxy
        if kernel_args:
            cmdline_args += " "+kernel_args
        cmdline_args += " inst.text inst.cmdline"

        qemu_cmd += ["-append", cmdline_args]

        if not opts.vnc:
            vnc_port = find_free_port()
            if vnc_port == -1:
                raise InstallError("No free VNC ports")
            display_args = "vnc=127.0.0.1:%d" % (vnc_port - 5900)
        else:
            display_args = opts.vnc
        log.info("qemu %s", display_args)
        qemu_cmd += ["-nographic", "-display", display_args ]

        # Setup the virtio log port
        qemu_cmd += ["-device", "virtio-serial-pci,id=virtio-serial0"]
        qemu_cmd += ["-device", "virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0"
                                ",id=channel0,name=org.fedoraproject.anaconda.log.0"]
        qemu_cmd += ["-chardev", "socket,id=charchannel0,host=%s,port=%s" % (virtio_host, virtio_port)]

        # PAss through rng from host
        qemu_cmd += ["-object", "rng-random,id=virtio-rng0,filename=/dev/random"]
        qemu_cmd += ["-device", "virtio-rng-pci,rng=virtio-rng0,id=rng0,bus=pci.0,addr=0x9"]

        if boot_uefi and ovmf_path:
            qemu_cmd += ["-drive", "file=%s/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on" % ovmf_path]

            # Make a copy of the OVMF_VARS.fd for this run
            ovmf_vars = tempfile.mktemp(prefix="lmc-OVMF_VARS-", suffix=".fd")
            shutil.copy2(joinpaths(ovmf_path, "/OVMF_VARS.fd"), ovmf_vars)

            qemu_cmd += ["-drive", "file=%s,if=pflash,format=raw,unit=1" % ovmf_vars]

        log.info("Running qemu")
        log.debug(qemu_cmd)
        try:
            execWithRedirect(qemu_cmd[0], qemu_cmd[1:], reset_lang=False, raise_err=True,
                             callback=lambda p: not log_check())
        except subprocess.CalledProcessError as e:
            log.error("Running qemu failed:")
            log.error("cmd: %s", " ".join(e.cmd))
            log.error("output: %s", e.output or "")
            raise InstallError("QEMUInstall failed")
        except (OSError, KeyboardInterrupt) as e:
            log.error("Running qemu failed: %s", str(e))
            raise InstallError("QEMUInstall failed")
        finally:
            os.unlink(qemu_initrd)
            if boot_uefi and ovmf_path:
                os.unlink(ovmf_vars)

        if log_check():
            log.error("Installation error detected. See logfile for details.")
            raise InstallError("QEMUInstall failed")
        else:
            log.info("Installation finished without errors.")


def is_image_mounted(disk_img):
    """
    Check to see if the disk_img is mounted

    :returns: True if disk_img is in /proc/mounts
    :rtype: bool
    """
    with open("/proc/mounts") as mounts:
        for mnt in mounts:
            fields = mnt.split()
            if len(fields) > 2 and fields[1] == disk_img:
                return True
    return False

def find_ostree_root(phys_root):
    """
    Find root of ostree deployment

    :param str phys_root: Path to physical root
    :returns: Relative path of ostree deployment root
    :rtype: str
    :raise Exception: More than one deployment roots were found
    """
    ostree_root = ""
    ostree_sysroots = glob.glob(joinpaths(phys_root, "ostree/boot.?/*/*/0"))
    log.debug("ostree_sysroots = %s", ostree_sysroots)
    if ostree_sysroots:
        if len(ostree_sysroots) > 1:
            raise Exception("Too many deployment roots found: %s" % ostree_sysroots)
        ostree_root = os.path.relpath(ostree_sysroots[0], phys_root)
    return ostree_root

def get_arch(mount_dir):
    """
    Get the kernel arch

    :returns: Arch of first kernel found at mount_dir/boot/ or i386
    :rtype: str
    """
    kernels = findkernels(mount_dir)
    if not kernels:
        return "i386"
    return kernels[0].arch

def squashfs_args(opts):
    """ Returns the compression type and args to use when making squashfs

    :param opts: ArgumentParser object with compression and compressopts
    :returns: tuple of compression type and args
    :rtype: tuple
    """
    compression = opts.compression or "xz"
    arch = ArchData(opts.arch or os.uname().machine)
    if compression == "xz" and arch.bcj:
        compressargs = ["-Xbcj", arch.bcj]
    else:
        compressargs = []
    return (compression, compressargs)


def make_appliance(disk_img, name, template, outfile, networks=None, ram=1024,
                   vcpus=1, arch=None, title="Linux", project="Linux",
                   releasever="25"):
    """
    Generate an appliance description file

    :param str disk_img: Full path of the disk image
    :param str name: Name of the appliance, passed to the template
    :param str template: Full path of Mako template
    :param str outfile: Full path of file to write, using template
    :param list networks: List of networks(str) from the kickstart
    :param int ram: Ram, in MiB, passed to template. Default is 1024
    :param int vcpus: CPUs, passed to template. Default is 1
    :param str arch: CPU architecture. Default is 'x86_64'
    :param str title: Title, passed to template. Default is 'Linux'
    :param str project: Project, passed to template. Default is 'Linux'
    :param str releasever: Release version, passed to template. Default is 25
    """
    if not (disk_img and template and outfile):
        return None

    log.info("Creating appliance definition using %s", template)

    if not arch:
        arch = "x86_64"

    log.info("Calculating SHA256 checksum of %s", disk_img)
    sha256 = hashlib.sha256()
    with open(disk_img) as f:
        while True:
            data = f.read(1024**2)
            if not data:
                break
            sha256.update(data)
    log.info("SHA256 of %s is %s", disk_img, sha256.hexdigest())
    disk_info = DataHolder(name=os.path.basename(disk_img), format="raw",
                           checksum_type="sha256", checksum=sha256.hexdigest())
    try:
        result = Template(filename=template).render(disks=[disk_info], name=name,
                          arch=arch, memory=ram, vcpus=vcpus, networks=networks,
                          title=title, project=project, releasever=releasever)
    except Exception:
        log.error(text_error_template().render())
        raise

    with open(outfile, "w") as f:
        f.write(result)


def make_fsimage(diskimage, fsimage, img_size=None, label="Anaconda"):
    """
    Copy the / partition of a partitioned disk image to an un-partitioned
    disk image.

    :param str diskimage: The full path to partitioned disk image with a /
    :param str fsimage: The full path of the output fs image file
    :param int img_size: Optional size of the fsimage in MiB or None to make
       it as small as possible
    :param str label: The label to apply to the image. Defaults to "Anaconda"
    """
    with PartitionMount(diskimage) as img_mount:
        if not img_mount or not img_mount.mount_dir:
            return None

        log.info("Creating fsimage %s (%s)", fsimage, img_size or "minimized")
        if img_size:
            # convert to Bytes
            img_size *= 1024**2

        mkext4img(img_mount.mount_dir, fsimage, size=img_size, label=label)


def make_runtime(opts, mount_dir, work_dir, size=None):
    """
    Make the squashfs image from a directory

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str mount_dir: Directory tree to compress
    :param str work_dir: Output compressed image to work_dir+images/install.img
    :param int size: Size of disk image, in GiB
    """
    kernel_arch = get_arch(mount_dir)

    # Fake dnf  object
    fake_dbo = FakeDNF(conf=DataHolder(installroot=mount_dir))
    # Fake arch with only basearch set
    arch = ArchData(kernel_arch)
    # TODO: Need to get release info from someplace...
    product = DataHolder(name=opts.project, version=opts.releasever, release="",
                            variant="", bugurl="", isfinal=False)

    # This is a mounted image partition, cannot hardlink to it, so just use it
    # symlink mount_dir/images to work_dir/images so we don't run out of space
    os.makedirs(joinpaths(work_dir, "images"))

    rb = RuntimeBuilder(product, arch, fake_dbo)
    compression, compressargs = squashfs_args(opts)
    log.info("Creating runtime")
    rb.create_runtime(joinpaths(work_dir, RUNTIME), size=size,
                      compression=compression, compressargs=compressargs)

def rebuild_initrds_for_live(opts, sys_root_dir, results_dir):
    """
    Rebuild intrds for pxe live image (root=live:http://)

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str sys_root_dir: Path to root of the system
    :param str results_dir: Path of directory for storing results
    """
    if not opts.dracut_args:
        dracut_args = DRACUT_DEFAULT
    else:
        dracut_args = []
        for arg in opts.dracut_args:
            dracut_args += arg.split(" ", 1)
    log.info("dracut args = %s", dracut_args)

    dracut = ["dracut", "--nomdadmconf", "--nolvmconf"] + dracut_args

    kdir = "boot"
    if opts.ostree:
        kernels_dir = glob.glob(joinpaths(sys_root_dir, "boot/ostree/*"))
        if kernels_dir:
            kdir = os.path.relpath(kernels_dir[0], sys_root_dir)

    kernels = [kernel for kernel in findkernels(sys_root_dir, kdir)]
    if not kernels:
        raise Exception("No initrds found, cannot rebuild_initrds")

    # Hush some dracut warnings. TODO: bind-mount proc in place?
    open(joinpaths(sys_root_dir,"/proc/modules"),"w")

    if opts.ostree:
        # Dracut assumes to have some dirs in disk image
        # /var/tmp for temp files
        vartmp_dir = joinpaths(sys_root_dir, "var/tmp")
        if not os.path.isdir(vartmp_dir):
            os.mkdir(vartmp_dir)
        # /root (maybe not fatal)
        root_dir = joinpaths(sys_root_dir, "var/roothome")
        if not os.path.isdir(root_dir):
            os.mkdir(root_dir)
        # /tmp (maybe not fatal)
        tmp_dir = joinpaths(sys_root_dir, "sysroot/tmp")
        if not os.path.isdir(tmp_dir):
            os.mkdir(tmp_dir)

    # Write the new initramfs directly to the results directory
    os.mkdir(joinpaths(sys_root_dir, "results"))
    mount(results_dir, opts="bind", mnt=joinpaths(sys_root_dir, "results"))
    # Dracut runs out of space inside the minimal rootfs image
    mount("/var/tmp", opts="bind", mnt=joinpaths(sys_root_dir, "var/tmp"))
    for kernel in kernels:
        if hasattr(kernel, "initrd"):
            outfile = os.path.basename(kernel.initrd.path)
        else:
            # Construct an initrd from the kernel name
            outfile = os.path.basename(kernel.path.replace("vmlinuz-", "initrd-") + ".img")
        log.info("rebuilding %s", outfile)

        kver = kernel.version

        cmd = dracut + ["/results/"+outfile, kver]
        runcmd(cmd, root=sys_root_dir)

        shutil.copy2(joinpaths(sys_root_dir, kernel.path), results_dir)
    umount(joinpaths(sys_root_dir, "var/tmp"), delete=False)
    umount(joinpaths(sys_root_dir, "results"), delete=False)
    os.unlink(joinpaths(sys_root_dir,"/proc/modules"))

def create_pxe_config(template, images_dir, live_image_name, add_args = None):
    """
    Create template for pxe to live configuration

    :param str images_dir: Path of directory with images to be used
    :param str live_image_name: Name of live rootfs image file
    :param list add_args: Arguments to be added to initrd= pxe config
    """

    add_args = add_args or []

    kernels = [kernel for kernel in findkernels(images_dir, kdir="")
               if hasattr(kernel, "initrd")]
    if not kernels:
        return

    kernel = kernels[0]

    add_args_str = " ".join(add_args)


    try:
        result = Template(filename=template).render(kernel=kernel.path,
                          initrd=kernel.initrd.path, liveimg=live_image_name,
                          addargs=add_args_str)
    except Exception:
        log.error(text_error_template().render())
        raise

    with open (joinpaths(images_dir, "PXE_CONFIG"), "w") as f:
        f.write(result)


def create_vagrant_metadata(path, size=0):
    """ Create a default Vagrant metadata.json file

    :param str path: Path to metadata.json file
    :param int size: Disk size in MiB
    """
    metadata = { "provider":"libvirt", "format":"qcow2", "virtual_size": ceil(size / 1024) }
    with open(path, "wt") as f:
        json.dump(metadata, f, indent=4)


def update_vagrant_metadata(path, size):
    """ Update the Vagrant metadata.json file

    :param str path: Path to metadata.json file
    :param int size: Disk size in MiB

    This function makes sure that the provider, format and virtual size of the
    metadata file are set correctly. All other values are left untouched.
    """
    with open(path, "rt") as f:
        try:
            metadata = json.load(f)
        except ValueError as e:
            log.error("Problem reading metadata file %s: %s", path, e)
            return

    metadata["provider"] = "libvirt"
    metadata["format"] = "qcow2"
    metadata["virtual_size"] = ceil(size / 1024)
    with open(path, "wt") as f:
        json.dump(metadata, f, indent=4)


def make_livecd(opts, mount_dir, work_dir):
    """
    Take the content from the disk image and make a livecd out of it

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str mount_dir: Directory tree to compress
    :param str work_dir: Output compressed image to work_dir+images/install.img

    This uses wwood's squashfs live initramfs method:
     * put the real / into LiveOS/rootfs.img
     * make a squashfs of the LiveOS/rootfs.img tree
     * This is loaded by dracut when the cmdline is passed to the kernel:
       root=live:CDLABEL=<volid> rd.live.image
    """
    kernel_arch = get_arch(mount_dir)

    arch = ArchData(kernel_arch)
    # TODO: Need to get release info from someplace...
    product = DataHolder(name=opts.project, version=opts.releasever, release="",
                            variant="", bugurl="", isfinal=False)

    # Link /images to work_dir/images to make the templates happy
    if os.path.islink(joinpaths(mount_dir, "images")):
        os.unlink(joinpaths(mount_dir, "images"))
    execWithRedirect("/bin/ln", ["-s", joinpaths(work_dir, "images"),
                                 joinpaths(mount_dir, "images")])

    # The templates expect the config files to be in /tmp/config_files
    # I think these should be release specific, not from lorax, but for now
    configdir = joinpaths(opts.lorax_templates,"live/config_files/")
    configdir_path = "tmp/config_files"
    fullpath = joinpaths(mount_dir, configdir_path)
    if os.path.exists(fullpath):
        remove(fullpath)
    copytree(configdir, fullpath)

    isolabel = opts.volid or "{0.name}-{0.version}-{1.basearch}".format(product, arch)
    if len(isolabel) > 32:
        isolabel = isolabel[:32]
        log.warning("Truncating isolabel to 32 chars: %s", isolabel)

    tb = TreeBuilder(product=product, arch=arch, domacboot=opts.domacboot,
                     inroot=mount_dir, outroot=work_dir,
                     runtime=RUNTIME, isolabel=isolabel,
                     templatedir=joinpaths(opts.lorax_templates,"live/"))
    log.info("Rebuilding initrds")
    if not opts.dracut_args:
        dracut_args = DRACUT_DEFAULT
    else:
        dracut_args = []
        for arg in opts.dracut_args:
            dracut_args += arg.split(" ", 1)
    log.info("dracut args = %s", dracut_args)
    tb.rebuild_initrds(add_args=dracut_args)
    log.info("Building boot.iso")
    tb.build()

    return work_dir

def mount_boot_part_over_root(img_mount):
    """
    Mount boot partition to /boot of root fs mounted in img_mount

    Used for OSTree so it finds deployment configurations on live rootfs

    param img_mount: object with mounted disk image root partition
    type img_mount: imgutils.PartitionMount
    """
    root_dir = img_mount.mount_dir
    is_boot_part = lambda dir: os.path.exists(dir+"/loader.0")
    tmp_mount_dir = tempfile.mkdtemp(prefix="lmc-tmpdir-")
    sysroot_boot_dir = None
    for dev, _size in img_mount.loop_devices:
        if dev is img_mount.mount_dev:
            continue
        try:
            mount("/dev/mapper/"+dev, mnt=tmp_mount_dir)
            if is_boot_part(tmp_mount_dir):
                umount(tmp_mount_dir)
                sysroot_boot_dir = joinpaths(root_dir, "boot")
                mount("/dev/mapper/"+dev, mnt=sysroot_boot_dir)
                break
            else:
                umount(tmp_mount_dir)
        except subprocess.CalledProcessError as e:
            log.debug("Looking for boot partition error: %s", e)
    remove(tmp_mount_dir)
    return sysroot_boot_dir

def novirt_log_check(log_check, proc):
    """
    Check to see if there has been an error in the logs

    :param log_check: method to call to check for an error in the logs
    :param proc: Popen object for the anaconda process
    :returns: True if the process has been terminated

    The log_check method should return a True if an error has been detected.
    When an error is detected the process is terminated and this returns True
    """
    if log_check():
        proc.terminate()
        return True
    return False


def anaconda_cleanup(dirinstall_path):
    """
    Cleanup any leftover mounts from anaconda

    :param str dirinstall_path: Path where anaconda mounts things

    If anaconda crashes it may leave things mounted under this path. It will
    typically be set to /mnt/sysimage/
    """
    dirinstall_path = os.path.abspath(dirinstall_path)
    # unmount filesystems
    for mounted in reversed(open("/proc/mounts").readlines()):
        (_device, mountpoint, _rest) = mounted.split(" ", 2)
        if mountpoint.startswith(dirinstall_path) and os.path.ismount(mountpoint):
            umount(mountpoint)


def novirt_install(opts, disk_img, disk_size):
    """
    Use Anaconda to install to a disk image

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str disk_img: The full path to the disk image to be created
    :param int disk_size: The size of the disk_img in MiB

    This method runs anaconda to create the image and then based on the opts
    passed creates a qemu disk image or tarfile.
    """
    dirinstall_path = ROOT_PATH

    # Clean up /tmp/ from previous runs to prevent stale info from being used
    for path in ["/tmp/yum.repos.d/", "/tmp/yum.cache/"]:
        if os.path.isdir(path):
            shutil.rmtree(path)

    args = ["--kickstart", opts.ks[0], "--cmdline"]
    if opts.anaconda_args:
        for arg in opts.anaconda_args:
            args += arg.split(" ", 1)
    if opts.proxy:
        args += ["--proxy", opts.proxy]
    if opts.armplatform:
        args += ["--armplatform", opts.armplatform]

    if opts.make_iso or opts.make_fsimage or opts.make_pxe_live:
        # Make a blank fs image
        args += ["--dirinstall"]

        mkext4img(None, disk_img, label=opts.fs_label, size=disk_size * 1024**2)
        if not os.path.isdir(dirinstall_path):
            os.mkdir(dirinstall_path)
        mount(disk_img, opts="loop", mnt=dirinstall_path)
    elif opts.make_tar or opts.make_oci:
        # Install under dirinstall_path, make sure it starts clean
        if os.path.exists(dirinstall_path):
            shutil.rmtree(dirinstall_path)

        if opts.make_oci:
            # OCI installs under /rootfs/
            dirinstall_path = joinpaths(dirinstall_path, "rootfs")
            args += ["--dirinstall", dirinstall_path]
        else:
            args += ["--dirinstall"]

        os.makedirs(dirinstall_path)
    else:
        args += ["--image", disk_img]

        # Create the sparse image
        mksparse(disk_img, disk_size * 1024**2)

    log_monitor = LogMonitor(timeout=opts.timeout)
    args += ["--remotelog", "%s:%s" % (log_monitor.host, log_monitor.port)]

    # Make sure anaconda has the right product and release
    log.info("Running anaconda.")
    try:
        for line in execReadlines("anaconda", args, reset_lang=False,
                                  env_add={"ANACONDA_PRODUCTNAME": opts.project,
                                           "ANACONDA_PRODUCTVERSION": opts.releasever},
                                  callback=lambda p: not novirt_log_check(log_monitor.server.log_check, p)):
            log.info(line)

        # Make sure the new filesystem is correctly labeled
        setfiles_args = ["-e", "/proc", "-e", "/sys", "-e", "/dev",
                         "/etc/selinux/targeted/contexts/files/file_contexts", "/"]

        # setfiles may not be available, warn instead of fail
        try:
            if "--dirinstall" in args:
                execWithRedirect("setfiles", setfiles_args, root=dirinstall_path)
            else:
                with PartitionMount(disk_img) as img_mount:
                    if img_mount and img_mount.mount_dir:
                        execWithRedirect("setfiles", setfiles_args, root=img_mount.mount_dir)
        except (subprocess.CalledProcessError, OSError) as e:
            log.warning("Running setfiles on install tree failed: %s", str(e))

    except (subprocess.CalledProcessError, OSError) as e:
        log.error("Running anaconda failed: %s", e)
        raise InstallError("novirt_install failed")
    finally:
        log_monitor.shutdown()

        # Make sure any leftover anaconda mounts have been cleaned up
        anaconda_cleanup(dirinstall_path)

        # Move the anaconda logs over to a log directory
        log_dir = os.path.abspath(os.path.dirname(opts.logfile))
        log_anaconda = joinpaths(log_dir, "anaconda")
        if not os.path.isdir(log_anaconda):
            os.mkdir(log_anaconda)
        for l in glob.glob("/tmp/*log")+glob.glob("/tmp/anaconda-tb-*"):
            shutil.copy2(l, log_anaconda)
            os.unlink(l)

        if not opts.make_iso and not opts.make_fsimage and not opts.make_pxe_live:
            dm_name = os.path.splitext(os.path.basename(disk_img))[0]
            dm_path = "/dev/mapper/"+dm_name
            if os.path.exists(dm_path):
                dm_detach(dm_path)
                loop_detach(get_loop_name(disk_img))

    # qemu disk image is used by bare qcow2 images and by Vagrant
    if opts.image_type:
        log.info("Converting %s to %s", disk_img, opts.image_type)
        qemu_args = []
        for arg in opts.qemu_args:
            qemu_args += arg.split(" ", 1)

        # convert the image to the selected format
        if "-O" not in qemu_args:
            qemu_args.extend(["-O", opts.image_type])
        qemu_img = tempfile.mktemp(prefix="lmc-disk-", suffix=".img")
        execWithRedirect("qemu-img", ["convert"] + qemu_args + [disk_img, qemu_img], raise_err=True)
        if not opts.make_vagrant:
            execWithRedirect("mv", ["-f", qemu_img, disk_img], raise_err=True)
        else:
            # Take the new qcow2 image and package it up for Vagrant
            compress_args = []
            for arg in opts.compress_args:
                compress_args += arg.split(" ", 1)

            vagrant_dir = tempfile.mkdtemp(prefix="lmc-tmpdir-")
            metadata_path = joinpaths(vagrant_dir, "metadata.json")
            execWithRedirect("mv", ["-f", qemu_img, joinpaths(vagrant_dir, "box.img")], raise_err=True)
            if opts.vagrant_metadata:
                shutil.copy2(opts.vagrant_metadata, metadata_path)
            else:
                create_vagrant_metadata(metadata_path)
            update_vagrant_metadata(metadata_path, disk_size)
            if opts.vagrantfile:
                shutil.copy2(opts.vagrantfile, joinpaths(vagrant_dir, "vagrantfile"))

            log.info("Creating Vagrant image")
            rc = mktar(vagrant_dir, disk_img, opts.compression, compress_args, selinux=False)
            if rc:
                raise InstallError("novirt_install mktar failed: rc=%s" % rc)
            shutil.rmtree(vagrant_dir)
    elif opts.make_tar:
        compress_args = []
        for arg in opts.compress_args:
            compress_args += arg.split(" ", 1)

        rc = mktar(dirinstall_path, disk_img, opts.compression, compress_args)
        shutil.rmtree(dirinstall_path)

        if rc:
            raise InstallError("novirt_install mktar failed: rc=%s" % rc)
    elif opts.make_oci:
        # An OCI image places the filesystem under /rootfs/ and adds the json files at the top
        # And then creates a tar of the whole thing.
        compress_args = []
        for arg in opts.compress_args:
            compress_args += arg.split(" ", 1)

        shutil.copy2(opts.oci_config, ROOT_PATH)
        shutil.copy2(opts.oci_runtime, ROOT_PATH)
        rc = mktar(ROOT_PATH, disk_img, opts.compression, compress_args)

        if rc:
            raise InstallError("novirt_install mktar failed: rc=%s" % rc)


def virt_install(opts, install_log, disk_img, disk_size):
    """
    Use qemu to install to a disk image

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str install_log: The path to write the log from qemu
    :param str disk_img: The full path to the disk image to be created
    :param int disk_size: The size of the disk_img in MiB

    This uses qemu with a boot.iso and a kickstart to create a disk
    image and then optionally, based on the opts passed, creates tarfile.
    """
    iso_mount = IsoMountpoint(opts.iso, opts.location)
    if not iso_mount.stage2:
        iso_mount.umount()
        raise InstallError("ISO is missing stage2, cannot continue")

    log_monitor = LogMonitor(install_log, timeout=opts.timeout)

    kernel_args = ""
    if opts.kernel_args:
        kernel_args += opts.kernel_args
    if opts.proxy:
        kernel_args += " proxy="+opts.proxy

    if opts.image_type and not opts.make_fsimage:
        qemu_args = []
        for arg in opts.qemu_args:
            qemu_args += arg.split(" ", 1)
        if "-f" not in qemu_args:
            qemu_args += ["-f", opts.image_type]

        mkqemu_img(disk_img, disk_size*1024**2, qemu_args)

    if opts.make_fsimage or opts.make_tar or opts.make_oci:
        diskimg_path = tempfile.mktemp(prefix="lmc-disk-", suffix=".img")
    else:
        diskimg_path = disk_img

    try:
        QEMUInstall(opts, iso_mount, opts.ks, diskimg_path, disk_size,
                    kernel_args, opts.ram, opts.vcpus, opts.vnc, opts.arch,
                    log_check = log_monitor.server.log_check,
                    virtio_host = log_monitor.host,
                    virtio_port = log_monitor.port,
                    image_type=opts.image_type, boot_uefi=opts.virt_uefi,
                    ovmf_path=opts.ovmf_path)
        log_monitor.shutdown()
    except InstallError as e:
        log.error("VirtualInstall failed: %s", e)
        raise
    finally:
        log.info("unmounting the iso")
        iso_mount.umount()

    if log_monitor.server.log_check():
        if not log_monitor.server.error_line and opts.timeout:
            msg = "virt_install failed due to timeout"
        else:
            msg = "virt_install failed on line: %s" % log_monitor.server.error_line
        raise InstallError(msg)

    if opts.make_fsimage:
        make_fsimage(diskimg_path, disk_img, disk_size, label=opts.fs_label)
        os.unlink(diskimg_path)
    elif opts.make_tar:
        compress_args = []
        for arg in opts.compress_args:
            compress_args += arg.split(" ", 1)

        with PartitionMount(diskimg_path) as img_mount:
            if img_mount and img_mount.mount_dir:
                rc = mktar(img_mount.mount_dir, disk_img, opts.compression, compress_args)
            else:
                rc = 1
        os.unlink(diskimg_path)

        if rc:
            raise InstallError("virt_install failed")
    elif opts.make_oci:
        # An OCI image places the filesystem under /rootfs/ and adds the json files at the top
        # And then creates a tar of the whole thing.
        compress_args = []
        for arg in opts.compress_args:
            compress_args += arg.split(" ", 1)

        with PartitionMount(diskimg_path, submount="rootfs") as img_mount:
            if img_mount and img_mount.temp_dir:
                shutil.copy2(opts.oci_config, img_mount.temp_dir)
                shutil.copy2(opts.oci_runtime, img_mount.temp_dir)
                rc = mktar(img_mount.temp_dir, disk_img, opts.compression, compress_args)
            else:
                rc = 1
        os.unlink(diskimg_path)

        if rc:
            raise InstallError("virt_install failed")
    elif opts.make_vagrant:
        compress_args = []
        for arg in opts.compress_args:
            compress_args += arg.split(" ", 1)

        vagrant_dir = tempfile.mkdtemp(prefix="lmc-tmpdir-")
        metadata_path = joinpaths(vagrant_dir, "metadata.json")
        execWithRedirect("mv", ["-f", disk_img, joinpaths(vagrant_dir, "box.img")], raise_err=True)
        if opts.vagrant_metadata:
            shutil.copy2(opts.vagrant_metadata, metadata_path)
        else:
            create_vagrant_metadata(metadata_path)
        update_vagrant_metadata(metadata_path, disk_size)
        if opts.vagrantfile:
            shutil.copy2(opts.vagrantfile, joinpaths(vagrant_dir, "vagrantfile"))

        rc = mktar(vagrant_dir, disk_img, opts.compression, compress_args, selinux=False)
        if rc:
            raise InstallError("virt_install failed")
        shutil.rmtree(vagrant_dir)


def make_squashfs(opts, disk_img, work_dir):
    """
    Create a squashfs image of an unpartitioned filesystem disk image

    :param str disk_img: Path to the unpartitioned filesystem disk image
    :param str work_dir: Output compressed image to work_dir+images/install.img
    :param str compression: Compression type to use
    :returns: True if squashfs creation was successful. False if there was an error.
    :rtype: bool

    Take disk_img and put it into LiveOS/rootfs.img and squashfs this
    tree into work_dir+images/install.img

    fsck.ext4 is run on the disk image to make sure there are no errors and to zero
    out any deleted blocks to make it compress better. If this fails for any reason
    it will return False and log the error.
    """
    # Make sure free blocks are actually zeroed so it will compress
    rc = execWithRedirect("/usr/sbin/fsck.ext4", ["-y", "-f", "-E", "discard", disk_img])
    if rc != 0:
        log.error("Problem zeroing free blocks of %s", disk_img)
        return False

    liveos_dir = joinpaths(work_dir, "runtime/LiveOS")
    os.makedirs(liveos_dir)
    os.makedirs(os.path.dirname(joinpaths(work_dir, RUNTIME)))

    rc = execWithRedirect("/bin/ln", [disk_img, joinpaths(liveos_dir, "rootfs.img")])
    if rc != 0:
        shutil.copy2(disk_img, joinpaths(liveos_dir, "rootfs.img"))

    compression, compressargs = squashfs_args(opts)
    mksquashfs(joinpaths(work_dir, "runtime"),
               joinpaths(work_dir, RUNTIME), compression, compressargs)
    remove(joinpaths(work_dir, "runtime"))
    return True

def calculate_disk_size(opts, ks):
    """ Calculate the disk size from the kickstart

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str ks: Path to the kickstart to use for the installation
    :returns: Disk size in MiB
    :rtype: int
    """
    # Disk size for a filesystem image should only be the size of /
    # to prevent surprises when using the same kickstart for different installations.
    unique_partitions = dict((p.mountpoint, p) for p in ks.handler.partition.partitions)
    if opts.no_virt and (opts.make_iso or opts.make_fsimage):
        disk_size = 2 + sum(p.size for p in unique_partitions.values() if p.mountpoint == "/")
    else:
        disk_size = 2 + sum(p.size for p in unique_partitions.values())
    log.info("Using disk size of %sMiB", disk_size)
    return disk_size

def make_image(opts, ks):
    """
    Install to a disk image

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str ks: Path to the kickstart to use for the installation
    :returns: Path of the image created
    :rtype: str

    Use qemu+boot.iso or anaconda to install to a disk image.
    """
    if opts.image_name:
        disk_img = joinpaths(opts.result_dir, opts.image_name)
    else:
        disk_img = tempfile.mktemp(prefix="lmc-disk-", suffix=".img", dir=opts.result_dir)
    log.info("disk_img = %s", disk_img)
    disk_size = calculate_disk_size(opts, ks)
    try:
        if opts.no_virt:
            novirt_install(opts, disk_img, disk_size)
        else:
            install_log = os.path.abspath(os.path.dirname(opts.logfile))+"/virt-install.log"
            log.info("install_log = %s", install_log)

            virt_install(opts, install_log, disk_img, disk_size)
    except InstallError as e:
        log.error("Install failed: %s", e)
        if not opts.keep_image and os.path.exists(disk_img):
            log.info("Removing bad disk image")
            os.unlink(disk_img)
        raise

    log.info("Disk Image install successful")
    return disk_img


def make_live_images(opts, work_dir, disk_img):
    """
    Create live images from direcory or rootfs image

    :param opts: options passed to livemedia-creator
    :type opts: argparse options
    :param str work_dir: Directory for storing results
    :param str disk_img: Path to disk image (fsimage or partitioned)
    :returns: Path of directory with created images or None
    :rtype: str

    fsck.ext4 is run on the rootfs_image to make sure there are no errors and to zero
    out any deleted blocks to make it compress better. If this fails for any reason
    it will return None and log the error.
    """
    sys_root = ""

    squashfs_root_dir = joinpaths(work_dir, "squashfs_root")
    liveos_dir = joinpaths(squashfs_root_dir, "LiveOS")
    os.makedirs(liveos_dir)
    rootfs_img = joinpaths(liveos_dir, "rootfs.img")

    if opts.fs_image or opts.no_virt:
        # Find the ostree root in the fsimage
        if opts.ostree:
            with Mount(disk_img, opts="loop") as mnt_dir:
                sys_root = find_ostree_root(mnt_dir)

        # Try to hardlink the image, if that fails, copy it
        rc = execWithRedirect("/bin/ln", [disk_img, rootfs_img])
        if rc != 0:
            shutil.copy2(disk_img, rootfs_img)
    else:
        is_root_part = None
        if opts.ostree:
            is_root_part = lambda dir: os.path.exists(dir+"/ostree/deploy")
        with PartitionMount(disk_img, mount_ok=is_root_part) as img_mount:
            if img_mount and img_mount.mount_dir:
                try:
                    mounted_sysroot_boot_dir = None
                    if opts.ostree:
                        sys_root = find_ostree_root(img_mount.mount_dir)
                        mounted_sysroot_boot_dir = mount_boot_part_over_root(img_mount)
                    if opts.live_rootfs_keep_size:
                        size = img_mount.mount_size / 1024**3
                    else:
                        size = opts.live_rootfs_size or None
                    log.info("Creating live rootfs image")
                    mkrootfsimg(img_mount.mount_dir, rootfs_img, "LiveOS", size=size, sysroot=sys_root)
                finally:
                    if mounted_sysroot_boot_dir:
                        umount(mounted_sysroot_boot_dir)
    log.debug("sys_root = %s", sys_root)

    # Make sure free blocks are actually zeroed so it will compress
    rc = execWithRedirect("/usr/sbin/fsck.ext4", ["-y", "-f", "-E", "discard", rootfs_img])
    if rc != 0:
        log.error("Problem zeroing free blocks of %s", disk_img)
        return None

    log.info("Packing live rootfs image")
    add_pxe_args = []
    live_image_name = "live-rootfs.squashfs.img"
    compression, compressargs = squashfs_args(opts)
    mksquashfs(squashfs_root_dir, joinpaths(work_dir, live_image_name), compression, compressargs)

    log.info("Rebuilding initramfs for live")
    with Mount(rootfs_img, opts="loop") as mnt_dir:
        try:
            mount(joinpaths(mnt_dir, "boot"), opts="bind", mnt=joinpaths(mnt_dir, sys_root, "boot"))
            rebuild_initrds_for_live(opts, joinpaths(mnt_dir, sys_root), work_dir)
        finally:
            umount(joinpaths(mnt_dir, sys_root, "boot"), delete=False)

    remove(squashfs_root_dir)

    if opts.ostree:
        add_pxe_args.append("ostree=/%s" % sys_root)
    template = joinpaths(opts.lorax_templates, "pxe-live/pxe-config.tmpl")
    create_pxe_config(template, work_dir, live_image_name, add_pxe_args)

    return work_dir


def default_image_name(compression, basename):
    """ Return a default image name with the correct suffix for the compression type.

    :param str compression: Compression type
    :param str basename: Base filename
    :returns: basename with compression suffix

    If the compression is unknown it defaults to xz
    """
    SUFFIXES = {"xz": ".xz", "gzip": ".gz", "bzip2": ".bz2", "lzma": ".lzma"}
    return basename + SUFFIXES.get(compression, ".xz")


def main():
    parser = lmc_parser()
    opts = parser.parse_args()

    setup_logging(opts.logfile, log)

    log.debug( opts )

    # Find the lorax templates
    opts.lorax_templates = find_templates(opts.lorax_templates or "/usr/share/lorax")

    # Check for invalid combinations of options, print all the errors and exit.
    errors = []
    if not opts.disk_image and not opts.fs_image and not opts.ks:
        errors.append("Image creation requires a kickstart file")

    if opts.ks and not os.path.exists(opts.ks[0]):
        errors.append("kickstart file (%s) is missing." % opts.ks[0])

    if opts.make_iso and not os.path.exists(opts.lorax_templates):
        errors.append("The lorax templates directory (%s) doesn't "
                      "exist." % opts.lorax_templates)

    if opts.result_dir and os.path.exists(opts.result_dir):
        errors.append("The results_dir (%s) should not exist, please delete or "
                      "move its contents" % opts.result_dir)

    # Default to putting results under tmp
    if not opts.result_dir:
        opts.result_dir = opts.tmp

    if opts.iso and not os.path.exists(opts.iso):
        errors.append("The iso %s is missing." % opts.iso)

    if opts.disk_image and not os.path.exists(opts.disk_image):
        errors.append("The disk image %s is missing." % opts.disk_image)

    if opts.fs_image and not os.path.exists(opts.fs_image):
        errors.append("The filesystem image %s is missing." % opts.fs_image)

    is_install = not (opts.disk_image or opts.fs_image)
    if is_install and not opts.no_virt and not opts.iso:
        errors.append("virt install needs an install iso.")

    if opts.volid and len(opts.volid) > 32:
        errors.append("the volume id cannot be longer than 32 characters")

    if is_install and not opts.no_virt \
       and not any(glob.glob("/usr/bin/qemu-system-*")):
        errors.append("qemu needs to be installed.")

    if is_install and opts.no_virt \
       and not os.path.exists("/usr/sbin/anaconda"):
        errors.append("no-virt requires anaconda to be installed.")

    if is_install and opts.no_virt:
        if selinux.is_selinux_enabled() and selinux.security_getenforce():
            errors.append("selinux must be disabled or in Permissive mode.")

    if opts.make_appliance and not opts.app_template:
        opts.app_template = joinpaths(opts.lorax_templates,
                                            "appliance/libvirt.tmpl")

    if opts.make_appliance and not os.path.exists(opts.app_template):
        errors.append("The appliance template (%s) doesn't "
                      "exist" % opts.app_template)

    if opts.image_name and os.path.exists(joinpaths(opts.result_dir, opts.image_name)):
        errors.append("The disk image to be created should not exist.")

    # Vagrant creates a qcow2 inside a tar, turn on qcow2
    if opts.make_vagrant:
        opts.image_type = "qcow2"

    # Alias --qcow2 to --image-type=qcow2
    if opts.qcow2:
        opts.image_type = "qcow2"

    if opts.image_type and not os.path.exists("/usr/bin/qemu-img"):
        errors.append("image-type requires the qemu-img utility to be installed." % opts.image_type)

    if opts.image_type and opts.make_iso:
        errors.append("image-type cannot be used to make a bootable iso.")

    if opts.image_type and opts.make_fsimage:
        errors.append("image-type cannot be used to make filesystem images.")

    if opts.image_type and opts.make_tar:
        errors.append("image-type cannot be used to make a tar.")

    if opts.make_oci and not (opts.oci_config and opts.oci_runtime):
        errors.append("--make-oci requires --oci-config and --oci-runtime")

    if opts.make_oci and not os.path.exists(opts.oci_config):
        errors.append("oci % file is missing" % opts.oci_config)

    if opts.make_oci and not os.path.exists(opts.oci_runtime):
        errors.append("oci % file is missing" % opts.oci_runtime)

    if opts.make_vagrant and opts.vagrant_metadata and not os.path.exists(opts.vagrant_metadata):
        errors.append("Vagrant metadata file %s is missing" % opts.vagrant_metadata)

    if opts.virt_uefi and not os.path.isdir(opts.ovmf_path):
        errors.append("The OVMF firmware is missing from %s" % opts.ovmf_path)
    elif opts.virt_uefi and os.path.isdir(opts.ovmf_path):
        for f in ["OVMF_CODE.fd", "OVMF_VARS.fd"]:
            if not os.path.exists(joinpaths(opts.ovmf_path, f)):
                errors.append("OVMF firmware file %s is missing from %s" % (f, opts.ovmf_path))

    if os.getuid() != 0:
        errors.append("You need to run this as root")

    if errors:
        list(log.error(e) for e in errors)
        sys.exit(1)

    if not os.path.exists(opts.result_dir):
        os.makedirs(opts.result_dir)

    # AMI image is just a fsimage with an AMI label
    if opts.make_ami:
        opts.make_fsimage = True
        if not opts.image_name:
            opts.image_name = "ami-root.img"
        if opts.fs_label == "Anaconda":
            opts.fs_label = "AMI"
    elif opts.make_tar:
        if not opts.image_name:
            opts.image_name = default_image_name(opts.compression, "root.tar")
        if opts.compression == "xz" and not opts.compress_args:
            opts.compress_args = ["-9"]
    elif opts.make_oci:
        if not opts.image_name:
            opts.image_name = default_image_name(opts.compression, "bundle.tar")
        if opts.compression == "xz" and not opts.compress_args:
            opts.compress_args = ["-9"]
    elif opts.make_vagrant:
        if not opts.image_name:
            opts.image_name = default_image_name(opts.compression, "vagrant.tar")
        if opts.compression == "xz" and not opts.compress_args:
            opts.compress_args = ["-9"]

    if opts.app_file:
        opts.app_file = joinpaths(opts.result_dir, opts.app_file)

    if opts.make_ostree_live:
        opts.make_pxe_live = True
        opts.ostree = True
    else:
        opts.ostree = False

    tempfile.tempdir = opts.tmp
    disk_img = None

    # Parse the kickstart
    if opts.ks:
        ks_version = makeVersion()
        ks = KickstartParser(ks_version, errorsAreFatal=False, missingIncludeIsFatal=False)
        ks.readKickstart(opts.ks[0])

    # live iso usually needs dracut-live so warn the user if it is missing
    if opts.ks and opts.make_iso:
        if "dracut-live" not in ks.handler.packages.packageList:
            log.error("dracut-live package is missing from the kickstart.")
            sys.exit(1)

    # Make the disk or filesystem image
    if not opts.disk_image and not opts.fs_image:
        errors = []
        if opts.no_virt and ks.handler.method.method not in ("url", "nfs") \
           and not ks.handler.ostreesetup.seen:
            errors.append("Only url, nfs and ostreesetup install methods are currently supported."
                          "Please fix your kickstart file." )

        if ks.handler.method.method in ("url", "nfs") and not ks.handler.network.seen:
            errors.append("The kickstart must activate networking if "
                          "the url or nfs install method is used.")

        if ks.handler.displaymode.displayMode is not None:
            errors.append("The kickstart must not set a display mode (text, cmdline, "
                          "graphical), this will interfere with livemedia-creator.")

        if opts.make_fsimage or (opts.make_pxe_live and opts.no_virt):
            # Make sure the kickstart isn't using autopart and only has a / mountpoint
            part_ok = not any(p for p in ks.handler.partition.partitions
                                 if p.mountpoint not in ["/", "swap"])
            if not part_ok or ks.handler.autopart.seen:
                errors.append("Filesystem images must use a single / part, not autopart or "
                              "multiple partitions. swap is allowed but not used.")

        if not opts.no_virt and ks.handler.reboot.action != KS_SHUTDOWN:
            errors.append("The kickstart must include shutdown when using virt installation.")

        if errors:
            list(log.error(e) for e in errors)
            sys.exit(1)

        # Make the image. Output of this is either a partitioned disk image or a fsimage
        try:
            disk_img = make_image(opts, ks)
        except InstallError as e:
            log.error("ERROR: Image creation failed: %s", e)
            sys.exit(1)

    if not opts.image_only:
        result_dir = None
        if opts.make_iso:
            work_dir = tempfile.mkdtemp(prefix="lmc-work-")
            log.info("working dir is %s", work_dir)

            if (opts.fs_image or opts.no_virt) and not opts.disk_image:
                # Create iso from a filesystem image
                disk_img = opts.fs_image or disk_img

                if not make_squashfs(opts, disk_img, work_dir):
                    log.error("squashfs.img creation failed")
                    sys.exit(1)

                with Mount(disk_img, opts="loop") as mount_dir:
                    result_dir = make_livecd(opts, mount_dir, work_dir)
            else:
                # Create iso from a partitioned disk image
                disk_img = opts.disk_image or disk_img
                with PartitionMount(disk_img) as img_mount:
                    if img_mount and img_mount.mount_dir:
                        make_runtime(opts, img_mount.mount_dir, work_dir, calculate_disk_size(opts, ks)/1024.0)
                        result_dir = make_livecd(opts, img_mount.mount_dir, work_dir)

            # --iso-only removes the extra build artifacts, keeping only the boot.iso
            if opts.iso_only and result_dir:
                boot_iso = joinpaths(result_dir, "images/boot.iso")
                if not os.path.exists(boot_iso):
                    log.error("%s is missing, skipping --iso-only.", boot_iso)
                else:
                    iso_dir = tempfile.mkdtemp(prefix="lmc-result-")
                    dest_file = joinpaths(iso_dir, opts.iso_name or "boot.iso")
                    shutil.move(boot_iso, dest_file)
                    shutil.rmtree(result_dir)
                    result_dir = iso_dir

            # cleanup the mess
            # cleanup work_dir?
            if disk_img and not (opts.keep_image or opts.disk_image or opts.fs_image):
                os.unlink(disk_img)
                log.info("Disk image erased")
                disk_img = None
        elif opts.make_appliance:
            if not opts.ks:
                networks = []
            else:
                networks = ks.handler.network.network
            make_appliance(opts.disk_image or disk_img, opts.app_name,
                           opts.app_template, opts.app_file, networks, opts.ram,
                           opts.vcpus or 1, opts.arch, opts.title, opts.project, opts.releasever)
        elif opts.make_pxe_live:
            work_dir = tempfile.mkdtemp(prefix="lmc-work-")
            log.info("working dir is %s", work_dir)
            disk_img = opts.fs_image or disk_img
            log.debug("disk image is %s", disk_img)

            result_dir = make_live_images(opts, work_dir, disk_img)
            if result_dir is None:
                log.error("Creating PXE live image failed.")
                sys.exit(1)

        if opts.result_dir != opts.tmp and result_dir:
            copytree(result_dir, opts.result_dir, preserve=False)
            shutil.rmtree(result_dir)
            result_dir = None

    log.info("SUMMARY")
    log.info("-------")
    log.info("Logs are in %s", os.path.abspath(os.path.dirname(opts.logfile)))
    if disk_img:
        log.info("Disk image is at %s", disk_img)
    if opts.make_appliance:
        log.info("Appliance description is in %s", opts.app_file)
    log.info("Results are in %s", result_dir or opts.result_dir)

    sys.exit( 0 )

if __name__ == '__main__':
    main()