qubes-installer-qubes-os/anaconda/anaconda

#!/usr/bin/python
#
# anaconda: The Red Hat Linux Installation program
#
# Copyright (C) 1999-2013
# Red Hat, Inc.  All rights reserved.
#
# 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): Brent Fox <bfox@redhat.com>
#            Mike Fulbright <msf@redhat.com>
#            Jakub Jelinek <jakub@redhat.com>
#            Jeremy Katz <katzj@redhat.com>
#            Chris Lumens <clumens@redhat.com>
#            Paul Nasrat <pnasrat@redhat.com>
#            Erik Troan <ewt@rpath.com>
#            Matt Wilson <msw@rpath.com>
#

# This toplevel file is a little messy at the moment... (2001-06-22)
# ...still messy (2013-07-12)

import atexit, sys, os, time, subprocess
# keep up with process ID of the window manager if we start it
wm_pid = None

def exitHandler(rebootData, storage, exitCode=None):
    if flags.usevnc:
        vnc.shutdownServer()

    if exitCode:
        anaconda.intf.shutdown()

    if "nokill" in flags.cmdline:
        iutil.vtActivate(1)
        print "anaconda halting due to nokill flag."
        print "The system will be rebooted when you press Ctrl-Alt-Delete."
        while True:
            time.sleep(10000)

    if image_count or flags.dirInstall:
        anaconda.storage.umountFilesystems(ignoreErrors=True, swapoff=False)
        devicetree = anaconda.storage.devicetree
        devicetree.teardownAll()
        for name in devicetree.diskImages:
            dev = devicetree.getDeviceByName(name)
            for loop in dev.parents:
                loop.controllable = True
            dev.deactivate(recursive=True)

    if not flags.imageInstall and not flags.livecdInstall \
       and not flags.dirInstall:
        from pykickstart.constants import KS_SHUTDOWN, KS_WAIT
        from pyanaconda.iutil import dracut_eject

        if flags.eject or rebootData.eject:
            for drive in storage.devicetree.devices:
                if drive.type != "cdrom":
                    continue
                dracut_eject(drive.path)

        if rebootData.action == KS_SHUTDOWN:
            subprocess.Popen(["systemctl", "--no-wall", "poweroff"])
        elif rebootData.action == KS_WAIT:
            subprocess.Popen(["systemctl", "--no-wall", "halt"])
        else: # reboot action is KS_REBOOT or None
            subprocess.Popen(["systemctl", "--no-wall", "reboot"])

def startSpiceVDAgent():
    status = iutil.execWithRedirect("spice-vdagent", [])

    if status:
        log.info("spice-vdagent exited with status %d", status)
    else:
        log.info("Started spice-vdagent.")

def startMetacityWM():
    childpid = os.fork()
    if not childpid:
        # after this point the method should never return (or throw an exception
        # outside)
        try:
            iutil.execWithRedirect('metacity', ["--display", ":1", "--sm-disable"])
        except BaseException as e:
            # catch all possible exceptions
            log.error("Problems running the window manager: %s", e)
            os._exit(1)

        log.info("The window manager has terminated.")
        os._exit(0)
    return childpid

def startAuditDaemon():
    childpid = os.fork()
    if not childpid:
        cmd = '/sbin/auditd'
        try:
            os.execl(cmd, cmd)
        except OSError as e:
            log.error("Error running the audit daemon: %s", e)
        os._exit(0)
    # auditd will turn into a daemon so catch the immediate child pid now:
    os.waitpid(childpid, 0)

# function to handle X startup special issues for anaconda
def doStartupX11Actions():
    """Start window manager"""

    global wm_pid # pid of the anaconda fork where the window manager is running

    # now start up the window manager
    wm_pid = startMetacityWM()
    log.info("Starting window manager, pid %s.", wm_pid)

def set_x_resolution(runres):
    # cant do this if no window manager is running because otherwise when we
    # open and close an X connection in the xutils calls the X server will exit
    # since this is the first X connection (if no window manager is running)
    if runres and opts.display_mode == 'g' and not flags.usevnc and wm_pid :
        try:
            log.info("Setting the screen resolution to: %s.", runres)
            iutil.execWithRedirect("xrandr",
                                   ["-d", ":1", "-s", runres])
        except RuntimeError:
            log.error("The X resolution not set")
            iutil.execWithRedirect("xrandr",
                                   ["-d", ":1", "-q"])

def doExtraX11Actions(runres):
    """Perform X11 actions not related to startup"""

    set_x_resolution(runres)

    startSpiceVDAgent()

    keyboard.background_XklWrapper_initialize()

def setupPythonUpdates():
    from distutils.sysconfig import get_python_lib
    import gi.overrides

    # Temporary hack for F18 alpha to symlink updates and product directories
    # into tmpfs.  To be removed after beta in order to directly use content
    # from /run/install/ -- JLK
    for dirname in ("updates", "product"):
        if os.path.exists("/run/install/%s" % dirname):
            if os.path.islink("/tmp/%s" % dirname):
                # Assume updates have already been setup
                return
            os.symlink("/run/install/%s" % dirname,
                       "/tmp/%s" % dirname)

    if not os.path.exists("/tmp/updates"):
        return

    for pkg in os.listdir("/tmp/updates"):
        d = "/tmp/updates/%s" % pkg

        if not os.path.isdir(d):
            continue

        # See if the package exists in /usr/lib{64,}/python/?.?/site-packages.
        # If it does, we can set it up as an update.  If not, the pkg is
        # likely a completely new directory and should not be looked at.
        dest = "%s/%s" % (get_python_lib(), pkg)
        if not os.access(dest, os.R_OK):
            dest = "%s/%s" % (get_python_lib(1), pkg)
            if not os.access(dest, os.R_OK):
                continue
        # Symlink over everything that's in the python libdir but not in
        # the updates directory.
        symlink_updates(dest, d)

    gi.overrides.__path__.insert(0, "/run/install/updates")

    import glob
    import shutil
    for rule in glob.glob("/tmp/updates/*.rules"):
        target = "/etc/udev/rules.d/" + rule.split('/')[-1]
        shutil.copyfile(rule, target)

def symlink_updates(dest_dir, update_dir):
    contents = os.listdir(update_dir)

    for f in os.listdir(dest_dir):
        dest_path = os.path.join(dest_dir, f)
        update_path = os.path.join(update_dir, f)
        if f in contents:
            # recurse into directories, there might be files missing in updates
            if os.path.isdir(dest_path) and os.path.isdir(update_path):
                symlink_updates(dest_path, update_path)
        else:
            if f.endswith(".pyc") or f.endswith(".pyo"):
                continue
            os.symlink(dest_path, update_path)

def getAnacondaVersion():
    # Using _isys here so we don't drag in the logging stuff, which is always
    # complicated.
    from pyanaconda import _isys
    return _isys.getAnacondaVersion()

def parseOptions(argv=None, cmdline=None):
    from pyanaconda.anaconda_optparse import AnacondaOptionParser

    # NOTE: for each long option (like '--repo'), AnacondaOptionParser
    # checks the boot arguments for bootarg_prefix+option ('inst.repo').
    # If require_prefix is False, it also accepts the option without the
    # bootarg_prefix ('repo').
    # See anaconda_optparse.py and BootArgs (in flags.py) for details.
    op = AnacondaOptionParser(version="%prog " + getAnacondaVersion(),
                              bootarg_prefix="inst.", require_prefix=False)

    # NOTE: store_false options will *not* get negated when the user does
    # "option=0" on the boot commandline (store_true options do, though).
    # Basically, don't use store_false unless the option starts with "no".

    # Interface
    op.add_option("-C", "--cmdline", dest="display_mode", action="store_const", const="c",
                  default="g")
    op.add_option("-G", "--graphical", dest="display_mode", action="store_const", const="g")
    op.add_option("-T", "--text", dest="display_mode", action="store_const", const="t")
    op.add_option("-S", "--script", dest="display_mode", action="store_const", const="s")

    # Network
    op.add_option("--noipv4", action="store_true", default=False)
    op.add_option("--noipv6", action="store_true", default=False)
    op.add_option("--proxy")

    # Method of operation
    op.add_option("--autostep", action="store_true", default=False)
    op.add_option("-d", "--debug", dest="debug", action="store_true", default=False)
    op.add_option("--ks", dest="ksfile", action="store_const", const="/run/install/ks.cfg")
    op.add_option("--kickstart", dest="ksfile")
    op.add_option("--rescue", dest="rescue", action="store_true", default=False)
    op.add_option("--targetarch", "rpmarch", dest="targetArch", type="string")
    op.add_option("--armplatform", dest="armPlatform", type="string")
    op.add_option("--multilib", dest="multiLib", action="store_true", default=False)

    op.add_option("-m", "--method", dest="method", default=None)
    op.add_option("--askmethod", dest="askmethod", action="store_true", default=False)
    op.add_option("--repo", dest="method", default=None)
    op.add_option("--stage2", dest="stage2", default=None)
    op.add_option("--noverifyssl", action="store_true", default=False)

    op.add_option("--liveinst", action="store_true", default=False)

    # Display
    op.add_option("--headless", dest="isHeadless", action="store_true", default=False)
    op.add_option("--nofb")
    op.add_option("--resolution", dest="runres", default=None)
    op.add_option("--usefbx", dest="xdriver", action="store_const", const="fbdev")
    op.add_option("--vnc", action="store_true", default=False)
    op.add_option("--vncconnect")
    op.add_option("--vncpassword", default="")
    op.add_option("--xdriver", dest="xdriver", action="store", type="string", default=None)

    # Language
    op.add_option("--keymap")
    op.add_option("--kbdtype")
    op.add_option("--lang")

    # Obvious
    op.add_option("--loglevel")
    op.add_option("--syslog")

    op.add_option("--noselinux", dest="selinux", action="store_false", default=True)
    op.add_option("--selinux", action="store_true")

    op.add_option("--nompath", dest="mpath", action="store_false", default=True)
    op.add_option("--mpath", action="store_true")

    op.add_option("--nodmraid", dest="dmraid", action="store_false", default=True)
    op.add_option("--dmraid", action="store_true")

    op.add_option("--noibft", dest="ibft", action="store_false", default=True)
    op.add_option("--ibft", action="store_true")
    op.add_option("--noiscsi", dest="iscsi", action="store_false", default=False)
    op.add_option("--iscsi", action="store_true")

    # Geolocation
    op.add_option("--geoloc")

    # Miscellaneous
    op.add_option("--module", action="append", default=[])
    op.add_option("--nomount", dest="rescue_nomount", action="store_true", default=False)
    op.add_option("--updates", dest="updateSrc", action="store", type="string")
    op.add_option("--dlabel", action="store_true", default=False)
    op.add_option("--image", action="append", dest="images", default=[])
    op.add_option("--dirinstall", action="store_true", default=False)
    op.add_option("--memcheck", action="store_true", default=True)
    op.add_option("--nomemcheck", action="store_false", dest="memcheck")
    op.add_option("--leavebootorder", action="store_true", default=False)
    op.add_option("--noeject", action="store_false", dest="eject", default=True)
    op.add_option("--extlinux", action="store_true", default=False)
    op.add_option("--dnf", action="store_true", default=False)

    # some defaults change based on cmdline flags
    if cmdline is not None:
        if "console" in cmdline:
            op.set_defaults(display_mode="t")

    (options, extraArgs) = op.parse_args(argv, cmdline=cmdline)
    return (options, extraArgs, op.deprecated_bootargs)

def setupPythonPath():
    # First add our updates path
    sys.path.insert(0, '/tmp/updates/')

    from pyanaconda.constants import ADDON_PATHS
    # append ADDON_PATHS dirs at the end
    sys.path.extend(ADDON_PATHS)

def setupEnvironment():
    # Silly GNOME stuff
    if os.environ.has_key('HOME') and not os.environ.has_key("XAUTHORITY"):
        os.environ['XAUTHORITY'] = os.environ['HOME'] + '/.Xauthority'
    os.environ['HOME'] = '/tmp'
    os.environ['LC_NUMERIC'] = 'C'
    os.environ["GCONF_GLOBAL_LOCKS"] = "1"

    # In theory, this gets rid of our LVM file descriptor warnings
    os.environ["LVM_SUPPRESS_FD_WARNINGS"] = "1"

    # make sure we have /sbin and /usr/sbin in our path
    os.environ["PATH"] += ":/sbin:/usr/sbin"

    # we can't let the LD_PRELOAD hang around because it will leak into
    # rpm %post and the like.  ick :/
    if os.environ.has_key("LD_PRELOAD"):
        del os.environ["LD_PRELOAD"]

def setupLoggingFromOpts(options):
    if options.debug:
        # debugging means debug logging
        options.loglevel = "debug"

    if options.loglevel and anaconda_log.logLevelMap.has_key(options.loglevel):
        level = anaconda_log.logLevelMap[opts.loglevel]
        anaconda_log.logger.tty_loglevel = level
        anaconda_log.setHandlersLevel(log, level)
        packaging_log = logging.getLogger("packaging")
        anaconda_log.setHandlersLevel(packaging_log, level)
        storage_log = logging.getLogger("storage")
        anaconda_log.setHandlersLevel(storage_log, level)

    if options.syslog:
        anaconda_log.logger.updateRemote(options.syslog)

def gtk_warning(title, reason):
    from gi.repository import Gtk
    dialog = Gtk.MessageDialog(type = Gtk.MessageType.ERROR,
                               buttons = Gtk.ButtonsType.CLOSE,
                               message_format=reason)
    dialog.set_title(title)
    dialog.run()
    dialog.destroy()

# pylint: disable-msg=W0621
def check_memory(anaconda, options, display_mode=None):
    reason_strict = _("%(product_name)s requires %(needed_ram)s MB of memory to "
                      "install, but you only have %(total_ram)s MB on this machine.\n")
    reason_graphical = _("The %(product_name)s graphical installer requires %(needed_ram)s "
                         "MB of memory, but you only have %(total_ram)s MB.")

    reboot_extra = _('\n'
                     'Press <return> to reboot your system.\n')
    livecd_title = _("Not enough RAM")
    livecd_extra =_(" Try the text mode installer by running:\n\n"
                    "'/usr/bin/liveinst -T'\n\n from a root "
                    "terminal.")
    nolivecd_extra = _(" Starting text mode.")

    if options.rescue:
        return

    if not display_mode:
        display_mode = anaconda.displayMode

    reason = reason_strict
    total_ram = int(isys.total_memory() / 1024)
    needed_ram = int(isys.MIN_RAM / 1024)
    graphical_ram = needed_ram + int(isys.GUI_INSTALL_EXTRA_RAM / 1024)

    log.info("check_memory(): total:%s, needed:%s, graphical:%s",
             total_ram, needed_ram, graphical_ram)

    if not options.memcheck:
        log.warning("CHECK_MEMORY DISABLED")
        return

    reason_args = {"product_name" : product.productName,
                   "needed_ram" : needed_ram,
                   "total_ram" : total_ram }
    if needed_ram > total_ram:
        from snack import SnackScreen, ButtonChoiceWindow
        if options.liveinst:
            stdoutLog.warning(reason, **reason_args)
            gtk_warning(livecd_title, reason % reason_args)
        else:
            reason += reboot_extra
            screen = SnackScreen()
            ButtonChoiceWindow(screen, _('Fatal Error'),
                               reason % reason_args,
                               buttons = (_("OK"),))
            screen.finish()
        sys.exit(1)

    # override display mode if machine cannot nicely run X
    if display_mode not in ('t', 'c', 's') and not flags.usevnc:
        reason_args["needed_ram"] = graphical_ram
        reason = reason_graphical

        if needed_ram > total_ram:
            if options.liveinst:
                reason += livecd_extra
                stdoutLog.warning(reason, **reason_args)
                title = livecd_title
                gtk_warning(title, reason % reason_args)
                sys.exit(1)
            else:
                reason += nolivecd_extra
                stdoutLog.warning(reason, **reason_args)
                anaconda.displayMode = 't'
                time.sleep(2)

def startDebugger(signum, frame):
    # pylint: disable-msg=F0401
    import epdb
    epdb.serve(skip=1)

# pylint: disable-msg=W0621
def setupDisplay(anaconda, options, addons=None):
    from pyanaconda.ui.tui.simpleline import App
    from pyanaconda.ui.tui.spokes.askvnc import AskVNCSpoke
    from pykickstart.constants import DISPLAY_MODE_TEXT
    from pyanaconda.nm import nm_is_connected, nm_is_connecting
    from blivet import arch

    graphical_failed = 0
    vncS = vnc.VncServer()          # The vnc Server object.
    vncS.anaconda = anaconda

    anaconda.displayMode = options.display_mode
    anaconda.isHeadless = options.isHeadless or arch.isS390()

    if options.vnc:
        flags.usevnc = 1
        anaconda.displayMode = 'g'
        vncS.password = options.vncpassword

        # Only consider vncconnect when vnc is a param
        if options.vncconnect:
            cargs = string.split(options.vncconnect, ":")
            vncS.vncconnecthost = cargs[0]
            if len(cargs) > 1 and len(cargs[1]) > 0:
                if len(cargs[1]) > 0:
                    vncS.vncconnectport = cargs[1]

    if options.xdriver:
        anaconda.xdriver = options.xdriver
        anaconda.writeXdriver(root="/")

    if anaconda.rescue:
        return

    if anaconda.ksdata.vnc.enabled:
        flags.usevnc = 1
        anaconda.displayMode = 'g'

        if vncS.password == "":
            vncS.password = anaconda.ksdata.vnc.password

        if vncS.vncconnecthost == "":
            vncS.vncconnecthost = anaconda.ksdata.vnc.host

        if vncS.vncconnectport == "":
            vncS.vncconnectport = anaconda.ksdata.vnc.port

    # disable VNC over text question when not enough memory is available
    if blivet.util.total_memory() < isys.MIN_GUI_RAM:
        stdoutLog.warning("Not asking for VNC because current memory (%d) < MIN_GUI_RAM (%d)", blivet.util.total_memory(), isys.MIN_GUI_RAM)
        flags.vncquestion = False

    # disable VNC question if text mode is requested and this is a ks install
    if anaconda.displayMode == 't' and flags.automatedInstall:
        stdoutLog.warning("Not asking for VNC because of an automated install")
        flags.vncquestion = False

    # disable VNC question if we were explicitly asked for text in kickstart
    if anaconda.ksdata.displaymode.displayMode == DISPLAY_MODE_TEXT:
        stdoutLog.warning("Not asking for VNC because text mode was explicitly asked for in kickstart")
        flags.vncquestion = False

    # disable VNC question if we don't have network
    if not nm_is_connecting() and not nm_is_connected():
        stdoutLog.warning("Not asking for VNC because we don't have a network")
        flags.vncquestion = False

    # disable VNC question if we don't have Xvnc
    if not os.access('/usr/bin/Xvnc', os.X_OK):
        stdoutLog.warning("Not asking for VNC because we don't have Xvnc")
        flags.vncquestion = False

    if os.environ.has_key('DISPLAY'):
        flags.preexisting_x11 = True

    # Should we try to start Xorg?
    want_x = anaconda.displayMode == 'g' and \
             not (flags.preexisting_x11 or flags.usevnc)

    # X on a headless (e.g. s390) system? Nonsense!
    if want_x and anaconda.isHeadless:
        stdoutLog.warning(_("DISPLAY variable not set. Starting text mode."))
        anaconda.displayMode = 't'
        graphical_failed = 1
        time.sleep(2)
        want_x = False

    # Is Xorg is actually available?
    if want_x and not os.access("/usr/bin/Xorg", os.X_OK):
        stdoutLog.warning(_("Graphical installation is not available. "
                            "Starting text mode."))
        time.sleep(2)
        anaconda.displayMode = 't'
        want_x = False

    if anaconda.displayMode == 't' and flags.vncquestion:
        #we prefer vnc over text mode, so ask about that
        message = _("Text mode provides a limited set of installation "
                    "options. It does not offer custom partitioning for "
                    "full control over the disk layout. Would you like "
                    "to use VNC mode instead?")

        app = App("VNC Question")
        spoke = AskVNCSpoke(app, anaconda.ksdata, message=message)
        app.schedule_screen(spoke)
        app.run()

        if anaconda.ksdata.vnc.enabled:
            anaconda.displayMode = 'g'
            flags.usevnc = 1
            vncS.password = anaconda.ksdata.vnc.password

    log.info("Display mode = %s", anaconda.displayMode)
    check_memory(anaconda, options)

    if want_x:
        # The following code depends on no SIGCHLD being delivered,
        # possibly only except the one from a failing X.org. Thus
        # make sure before entering this section that all the other
        # children of anaconda have terminated or were forked into
        # an orphan (which won't deliver a SIGCHLD to mess up the
        # fragile signaling below). start X with its USR1 handler
        # set to ignore.  this will make it send us SIGUSR1 if it
        # succeeds.  if it fails, catch SIGCHLD and bomb out.
        def sigchld_handler(num, frame):
            raise OSError(0, "SIGCHLD caught when trying to start the X server.")

        def sigusr1_handler(num, frame):
            log.debug("X server has signalled a successful start.")

        def preexec_fn():
            signal.signal(signal.SIGUSR1, signal.SIG_IGN)

        old_sigusr1 = signal.signal(signal.SIGUSR1, sigusr1_handler)
        old_sigchld = signal.signal(signal.SIGCHLD, sigchld_handler)
        xout = open("/dev/tty5", "w")
        try:
            subprocess.Popen(["Xorg", "-br",
                              "-logfile", "/tmp/X.log",
                              ":1", "vt7", "-s", "1440", "-ac",
                              "-nolisten", "tcp", "-dpi", "96",
                              "-noreset"],
                              close_fds=True,
                              stdout=xout, stderr=xout,
                              preexec_fn=preexec_fn)

            signal.pause()
            os.environ["DISPLAY"] = ":1"
            doStartupX11Actions()
        except (OSError, RuntimeError):
            stdoutLog.warning("X startup failed, falling back to text mode")
            anaconda.displayMode = 't'
            graphical_failed = 1
            time.sleep(2)
        finally:
            signal.signal(signal.SIGUSR1, old_sigusr1)
            signal.signal(signal.SIGCHLD, old_sigchld)

        if not graphical_failed:
            doExtraX11Actions(options.runres)

    if anaconda.displayMode == 't' and graphical_failed and \
         flags.vncquestion and not anaconda.ksdata.vnc.enabled:
        app = App("VNC Question")
        spoke = AskVNCSpoke(app, anaconda.ksdata)
        app.schedule_screen(spoke)
        app.run()

        if anaconda.ksdata.vnc.enabled:
            anaconda.displayMode = 'g'
            flags.usevnc = 1
            vncS.password = anaconda.ksdata.vnc.password

    # if they want us to use VNC do that now
    if anaconda.displayMode == 'g' and flags.usevnc:
        vncS.startServer()
        doStartupX11Actions()

    # with X running we can initialize the UI interface
    anaconda.initInterface(addons)

    anaconda.instClass.configure(anaconda)

def prompt_for_ssh():
    # Do some work here to get the ip addr / hostname to pass
    # to the user.
    import socket

    ip = network.getFirstRealIP()

    if not ip:
        stdoutLog.error("No IP addresses found, cannot continue installation.")
        sys.exit(1)

    ipstr = ip

    try:
        hinfo = socket.gethostbyaddr(ipstr)
    except socket.herror as e:
        stdoutLog.debug("Exception caught trying to get host name of %s: %s", ipstr, e)
        name = network.getHostname()
    else:
        if len(hinfo) == 3:
            name = hinfo[0]

    if ip.find(':') != -1:
        ipstr = "[%s]" % (ip,)

    if (name is not None) and (not name.startswith('localhost')) and (ipstr is not None):
        connxinfo = "%s (%s)" % (socket.getfqdn(name=name), ipstr,)
    elif ipstr is not None:
        connxinfo = "%s" % (ipstr,)
    else:
        connxinfo = None

    if connxinfo:
        stdoutLog.info(_("Please ssh install@%s to begin the install."), connxinfo)
    else:
        stdoutLog.info(_("Please ssh install@<host> to continue installation."))

def cleanPStore():
    """remove files stored in nonvolatile ram created by the pstore subsystem"""

    # files in pstore are linux (not distribution) specific, but we want to
    # make sure the entirity of them are removed so as to ensure that there
    # is sufficient free space on the flash part.  On some machines this will
    # take effect immediately, which is the best case.  Unfortunately on some,
    # an intervening reboot is needed."""
    try:
        for root, _dirs, files in os.walk("/sys/fs/pstore"):
            for f in files:
                os.unlink("%s/%s" % (root,f))
    except OSError:
        pass

if __name__ == "__main__":
    print "Starting installer, one moment..."

    # Allow a file to be loaded as early as possible
    try:
        # pylint: disable-msg=F0401,W0611
        import updates_disk_hook
    except ImportError:
        pass

    # this handles setting up updates for pypackages to minimize the set needed
    setupPythonUpdates()
    setupPythonPath()

    # init threading before Gtk can do anything and before we start using threads
    # initThreading initializes the threadMgr instance, import it afterwards
    from pyanaconda.threads import initThreading, AnacondaThread
    initThreading()
    from pyanaconda.threads import threadMgr

    import gettext
    _ = lambda x: gettext.ldgettext("anaconda", x)

    from pyanaconda import constants
    from pyanaconda.addons import collect_addon_paths
    from pyanaconda import geoloc

    # do this early so we can set flags before initializing logging
    from pyanaconda.flags import flags, can_touch_runtime_system
    (opts, args, depr) = parseOptions(cmdline=flags.cmdline)

    if opts.askmethod:
        flags.askmethod = True

    # Set up logging as early as possible.
    import logging
    from pyanaconda import anaconda_log
    anaconda_log.init()
    anaconda_log.logger.setupVirtio()

    from pyanaconda import network
    network.setup_ifcfg_log()

    log = logging.getLogger("anaconda")
    stdoutLog = logging.getLogger("anaconda.stdout")

    if os.geteuid() != 0:
        stdoutLog.error("anaconda must be run as root.")
        sys.exit(0)

    if opts.images and opts.dirinstall:
        stdoutLog.error("--images and --dirinstall cannot be used at the same time")
        sys.exit(0)
    elif opts.images:
        flags.imageInstall = True
    elif opts.dirinstall:
        flags.dirInstall = True

    # see if we're on s390x and if we've got an ssh connection
    uname = os.uname()
    if uname[4] == 's390x':
        if 'TMUX' not in os.environ and "RUNKS" not in flags.cmdline and not flags.imageInstall:
            prompt_for_ssh()
            sys.exit(0)
        # If we get RUNKS, we default to cmdline display mode, because nothing
        # else will work.  Kickstart options can still override.
        if "RUNKS" in flags.cmdline:
            opts.display_mode = 'c'

    log.info("%s %s", sys.argv[0], getAnacondaVersion())

    # TODO: uncomment this when we're sure that we're doing the right thing
    # with flags.cmdline *everywhere* it appears...
    #for arg in depr:
    #    stdoutLog.warn("Boot argument '%s' is deprecated. "
    #                   "In the future, use 'inst.%s'.", arg, arg)

    # pull this in to get product name and versioning
    from pyanaconda import product

    from pyanaconda import isys
    isys.initLog()

    import signal, string

    from pyanaconda import iutil
    from pyanaconda import vnc
    from pyanaconda import kickstart
    from pyanaconda import ntp
    from pyanaconda import keyboard

    verdesc = "%s for %s %s" % (getAnacondaVersion(),
                                product.productName, product.productVersion)
    if product.isFinal:
        print "anaconda %s started." % verdesc
    else:
        print "anaconda %s (pre-release) started." % verdesc

    from pyanaconda.anaconda import Anaconda
    anaconda = Anaconda()
    iutil.setup_translations(gettext)

    # reset python's default SIGINT handler
    signal.signal(signal.SIGINT, signal.SIG_IGN)
    signal.signal(signal.SIGSEGV, isys.handleSegv)
    signal.signal(signal.SIGTERM, lambda num, frame: sys.exit(1))

    setupEnvironment()
    # make sure we have /var/log soon, some programs fail to start without it
    iutil.mkdirChain("/var/log")

    pidfile = open("/var/run/anaconda.pid", "w")
    pidfile.write("%s\n" % (os.getpid(),))
    del pidfile
    # add our own additional signal handlers
    signal.signal(signal.SIGHUP, startDebugger)

    anaconda.opts = opts

    # check memory, just the text mode for now:
    check_memory(anaconda, opts, 't')

    # Now that we've got arguments, do some extra processing.
    setupLoggingFromOpts(opts)

    # Default is to prompt to mount the installed system.
    anaconda.rescue_mount = not opts.rescue_nomount

    if opts.dlabel: #autodetected driverdisc in use
        flags.dlabel = True

    if opts.noipv4:
        flags.useIPv4 = False

    if opts.noipv6:
        flags.useIPv6 = False

    if opts.proxy:
        anaconda.proxy = opts.proxy

    if opts.updateSrc:
        anaconda.updateSrc = opts.updateSrc

    if opts.method:
        anaconda.methodstr = opts.method

    if opts.stage2:
        anaconda.stage2 = opts.stage2

    if opts.noverifyssl:
        flags.noverifyssl = True

    if opts.liveinst:
        flags.livecdInstall = True

    if opts.module:
        for mod in opts.module:
            anaconda.extraModules.append(mod.split(":"))

    if opts.ibft:
        flags.ibft = 1

    if opts.iscsi:
        flags.iscsi = 1

    if opts.targetArch:
        flags.targetarch = opts.targetArch

    if opts.armPlatform:
        flags.armPlatform = opts.armPlatform

    if opts.extlinux:
        flags.extlinux = opts.extlinux

    if opts.dnf:
        flags.dnf = opts.dnf

    # set flags
    flags.dmraid = opts.dmraid
    flags.mpath = opts.mpath
    flags.selinux = opts.selinux
    flags.eject = opts.eject

    if can_touch_runtime_system("start audit daemon"):
        startAuditDaemon()

    # setup links required for all install types
    for i in ( "services", "protocols", "nsswitch.conf", "joe", "selinux",
               "mke2fs.conf" ):
        try:
            if os.path.exists("/mnt/runtime/etc/" + i):
                os.symlink ("../mnt/runtime/etc/" + i, "/etc/" + i)
        except OSError:
            pass

    if opts.debug:
        flags.debug = True

    if opts.rescue:
        anaconda.rescue = True

    log.info("anaconda called with cmdline = %s", sys.argv)
    log.info("Default encoding = %s ", sys.getdefaultencoding())

    os.system("udevadm control --env=ANACONDA=1")

    # Collect all addon paths
    addon_paths = collect_addon_paths(constants.ADDON_PATHS)

    # If we were given a kickstart file on the command line, parse (but do not
    # execute) that now.  Otherwise, load in defaults from kickstart files
    # shipped with the installation media.
    ksdata = None
    if opts.ksfile:
        flags.automatedInstall = True
        flags.eject = False
        ksFiles = [opts.ksfile]
    else:
        ksFiles = ["/tmp/updates/interactive-defaults.ks",
                   "/usr/share/anaconda/interactive-defaults.ks"]

    for ks in ksFiles:
        if not os.path.exists(ks):
            continue

        kickstart.preScriptPass(ks)
        ksdata = kickstart.parseKickstart(ks)

        # Only load the first defaults file we find.
        break

    if not ksdata:
        ksdata = kickstart.AnacondaKSHandler(addon_paths["ks"])

    if ksdata.rescue.rescue:
        anaconda.rescue = True

    # Some kickstart commands must be executed immediately, as they affect
    # how anaconda operates.
    ksdata.logging.execute()

    anaconda.ksdata = ksdata

    # setup keyboard layout from the command line option and let
    # it override from kickstart if/when X is initialized
    if opts.keymap:
        if not ksdata.keyboard.keyboard:
            ksdata.keyboard.keyboard = opts.keymap

    if ksdata.keyboard.keyboard and can_touch_runtime_system("activate keyboard"):
        keyboard.activate_keyboard(ksdata.keyboard)

    # Some post-install parts of anaconda are implemented as kickstart
    # scripts.  Add those to the ksdata now.
    kickstart.appendPostScripts(ksdata)

    # cmdline flags override kickstart settings
    if anaconda.proxy:
        ksdata.method.proxy = anaconda.proxy
    if flags.noverifyssl:
        ksdata.method.noverifyssl = flags.noverifyssl
    if opts.multiLib:
        # sets yum's multilib_policy to "all" (as opposed to "best")
        ksdata.packages.multiLib = opts.multiLib

    # set ksdata.method based on anaconda.method if it isn't already set
    if anaconda.methodstr and not ksdata.method.seen:
        if anaconda.methodstr.startswith("cdrom"):
            ksdata.method.method = "cdrom"
        elif anaconda.methodstr.startswith("nfs"):
            ksdata.method.method = "nfs"
            (nfsOptions, server, path) = iutil.parseNfsUrl(anaconda.methodstr)
            ksdata.method.server = server
            ksdata.method.dir = path
            ksdata.method.opts = nfsOptions
        elif anaconda.methodstr.startswith("hd:"):
            ksdata.method.method = "harddrive"
            url = anaconda.methodstr.split(":", 1)[1]
            url_parts = url.split(":")
            device = url_parts[0]
            path = ""
            if len(url_parts) == 2:
                path = url_parts[1]
            elif len(url_parts) == 3:
                fstype = url_parts[1]   # XXX not used
                path = url_parts[2]

            ksdata.method.partition = device
            ksdata.method.dir = path
        elif anaconda.methodstr.startswith("http") or \
             anaconda.methodstr.startswith("ftp"):
            ksdata.method.method = "url"
            ksdata.method.url = anaconda.methodstr
            # installation source specified by bootoption
            # overrides source set from kickstart;
            # the kickstart might have specified a mirror list,
            # so we need to clear it here if plain url source is provided
            # by a bootoption, because having both url & mirror list
            # set at once is not supported and breaks Yum in
            # unpredictable ways
            ksdata.method.mirrorlist = None
        elif anaconda.methodstr.startswith("livecd"):
            ksdata.method.method = "harddrive"
            device = anaconda.methodstr.split(":", 1)[1]
            ksdata.method.partition = os.path.normpath(device)
        else:
            log.error("Unknown method: %s", anaconda.methodstr)

    from pyanaconda import localization
    # Set the language before loading an interface, when it may be too late.

    # check if the LANG environmental variable is set
    env_lang = os.environ.get("LANG")
    if env_lang is not None:
        # parse it using langtable
        env_langs = localization.get_language_locales(env_lang)
        # if parsed LANG is the same as our default language - ignore it;
        # otherwise use it as valid language candidate
        if env_langs and env_langs[0] != constants.DEFAULT_LANG:
            env_lang = env_langs[0]  # the first language is the best match
        else:
            env_lang = None

    requested_lang = opts.lang or ksdata.lang.lang or env_lang

    if requested_lang:
        locales = localization.get_language_locales(requested_lang)
        if locales:
            localization.setup_locale(locales[0], ksdata.lang)
            ksdata.lang.seen = True
        else:
            log.error("Invalid locale '%s' given on command line or in kickstart", requested_lang)
    else:
        # no kickstart or bootoption - use default
        localization.setup_locale(constants.DEFAULT_LANG, ksdata.lang)

    import blivet
    blivet.enable_installer_mode()

    # now start the interface
    setupDisplay(anaconda, opts, addon_paths)

    if anaconda.rescue:
        from pyanaconda import rescue
        anaconda.intf = rescue.RescueInterface()

    # Set flag to prompt for missing ks data
    if anaconda.displayMode == 'c':
        flags.ksprompt = False

    image_count = 0
    for image in opts.images:
        image_spec = image.rsplit(":", 1)
        path = image_spec[0]
        if len(image_spec) == 2 and image_spec[1].strip():
            imageName = image_spec[1].strip()
        else:
            imageName = os.path.splitext(os.path.basename(path))[0]

        if "/" in imageName or imageName in anaconda.storage.config.diskImages.keys():
            imageName = "diskimg%d" % image_count

        log.info("naming disk image '%s' '%s'", path, imageName)
        anaconda.storage.config.diskImages[imageName] = path
        image_count += 1
        flags.imageInstall = True

    if image_count:
        anaconda.storage.setupDiskImages()

    from pyanaconda import exception
    # comment out the next line to make exceptions non-fatal
    anaconda.mehConfig = exception.initExceptionHandling(anaconda)

    # add our own additional signal handlers
    signal.signal(signal.SIGUSR1, lambda signum, frame:
                                         exception.test_exception_handling())
    signal.signal(signal.SIGUSR2, lambda signum, frame: anaconda.dumpState())

    from blivet import storageInitialize
    from pyanaconda.packaging import payloadInitialize
    from pyanaconda.network import networkInitialize, wait_for_connecting_NM_thread
    from pyanaconda.timezone import time_initialize

    if anaconda.rescue:
        rescue.doRescue(anaconda.intf, anaconda.rescue_mount, ksdata)
    else:
        cleanPStore()

    networkInitialize(ksdata)
    if not flags.dirInstall:
        threadMgr.add(AnacondaThread(name=constants.THREAD_STORAGE, target=storageInitialize,
                                     args=(anaconda.storage, ksdata, anaconda.protected)))
        threadMgr.add(AnacondaThread(name=constants.THREAD_TIME_INIT, target=time_initialize,
                                     args=(ksdata.timezone, anaconda.storage, anaconda.bootloader)))

    threadMgr.add(AnacondaThread(name=constants.THREAD_WAIT_FOR_CONNECTING_NM, target=wait_for_connecting_NM_thread, args=(ksdata,)))
    threadMgr.add(AnacondaThread(name=constants.THREAD_PAYLOAD, target=payloadInitialize, args=(anaconda.storage, ksdata, anaconda.payload)))

    atexit.register(exitHandler, ksdata.reboot, anaconda.storage)

    # check if geolocation should be enabled for this type of installation
    use_geolocation = True
    if flags.imageInstall or flags.dirInstall:
        use_geolocation = False
    # and also check if it was not disabled by boot option
    else:
        # flags.cmdline.getbool is used as it handles values such as
        # 0, no, off and also nogeoloc as False
        # and other values or geoloc not being present as True
        use_geolocation = flags.cmdline.getbool('geoloc', True)


    if use_geolocation:
        provider_id = constants.GEOLOC_DEFAULT_PROVIDER
        # check if a provider was specified by an option
        if opts.geoloc is not None:
            parsed_id = geoloc.get_provider_id_from_option(opts.geoloc)
            if parsed_id is None:
                log.error('geoloc: wrong provider id specified: %s', opts.geoloc)
            else:
                provider_id = parsed_id
        # instantiate the geolocation module and start location data refresh
        geoloc.init_geolocation(provider_id=provider_id)
        geoloc.refresh()

    # setup ntp servers and start NTP daemon if not requested otherwise
    if can_touch_runtime_system("start chronyd"):
        if anaconda.ksdata.timezone.ntpservers:
            ntp.save_servers_to_config(anaconda.ksdata.timezone.ntpservers)

        if not anaconda.ksdata.timezone.nontp:
            iutil.start_service("chronyd")

    # try to load firmware language
    localization.load_firmware_language(ksdata.lang)

    # FIXME:  This will need to be made cleaner once this file starts to take
    # shape with the new UI code.
    anaconda._intf.setup(ksdata)
    anaconda._intf.run()

# vim:tw=78:ts=4:et:sw=4