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612 lines
22 KiB
612 lines
22 KiB
#!/usr/bin/python3
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#vim: set fileencoding=utf8
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# parse-kickstart - read a kickstart file and emit equivalent dracut boot args
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#
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# Designed to run inside the dracut initramfs environment.
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# Requires python 2.7 or later.
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#
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#
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# Copyright (C) 2012-2014 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Authors:
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# Will Woods <wwoods@redhat.com>
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import sys, os
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import logging
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import shutil
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import uuid
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import glob
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from pykickstart.parser import KickstartParser, preprocessKickstart
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from pykickstart.sections import NullSection
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from pykickstart.version import returnClassForVersion
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from pykickstart.errors import KickstartError
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# pylint: disable=wildcard-import,unused-wildcard-import
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from pykickstart.constants import *
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from pykickstart import commands
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from collections import OrderedDict
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# Default logging: none
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log = logging.getLogger('parse-kickstart').addHandler(logging.NullHandler())
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TMPDIR = "/tmp"
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import functools
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def eintr_retry_call(func, *args, **kwargs):
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"""Retry an interruptible system call if interrupted."""
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while True:
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try:
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return func(*args, **kwargs)
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except InterruptedError:
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continue
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open = functools.partial(eintr_retry_call, open) # pylint: disable=redefined-builtin
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# Helper function for reading simple files in /sys
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def readsysfile(f):
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'''Return the contents of f, or "" if missing.'''
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try:
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val = open(f).readline().strip()
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except IOError:
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val = ""
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return val
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def read_cmdline(f):
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'''Returns an OrderedDict containing key-value pairs from a file with
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boot arguments (e.g. /proc/cmdline).'''
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args = OrderedDict()
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try:
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lines = open(f).readlines()
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except IOError:
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lines = []
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# pylint: disable=redefined-outer-name
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for line in lines:
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for arg in line.split():
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k,_,v = arg.partition("=")
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args[k] = v
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return args
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def first_device_with_link():
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for dev_dir in sorted(glob.glob("/sys/class/net/*")):
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##define ARPHRD_ETHER 1 /* Ethernet 10Mbps */
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##define ARPHRD_INFINIBAND 32 /* InfiniBand */
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try:
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with open(dev_dir+"/type") as f:
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if f.read().strip() not in ("1", "32"):
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continue
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with open(dev_dir+"/carrier") as f:
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if f.read().strip() == "1":
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return os.path.basename(dev_dir)
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except IOError:
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pass
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return ""
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def setting_only_hostname(net, args):
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return net.hostname and (len(args) == 2 or (len(args) == 3 and "--hostname" in args))
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proc_cmdline = read_cmdline("/proc/cmdline")
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class DracutArgsMixin(object):
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"""A mixin class to make a Command generate dracut args."""
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def dracut_args(self, args, lineno, obj):
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raise NotImplementedError
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# Here are the kickstart commands we care about:
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class Cdrom(commands.cdrom.FC3_Cdrom, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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return "inst.repo=cdrom"
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class HardDrive(commands.harddrive.FC3_HardDrive, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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if self.biospart:
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return "inst.repo=bd:%s:%s" % (self.partition, self.dir)
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else:
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return "inst.repo=hd:%s:%s" % (self.partition, self.dir)
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class NFS(commands.nfs.FC6_NFS, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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if self.opts:
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method = "nfs:%s:%s:%s" % (self.opts, self.server, self.dir)
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else:
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method="nfs:%s:%s" % (self.server, self.dir)
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# Spaces on the cmdline need to be '\ '
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method = method.replace(" ", "\\ ")
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return "inst.repo=%s" % method
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class URL(commands.url.F18_Url, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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# Spaces in the url need to be %20
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if self.url:
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method = self.url.replace(" ", "%20")
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else:
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method = None
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args = ["inst.repo=%s" % method]
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if self.noverifyssl:
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args.append("rd.noverifyssl")
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if self.proxy:
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args.append("proxy=%s" % self.proxy)
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return "\n".join(args)
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class Updates(commands.updates.F7_Updates, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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if self.url == "floppy":
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return "live.updates=/dev/fd0"
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elif self.url:
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return "live.updates=%s" % self.url
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class MediaCheck(commands.mediacheck.FC4_MediaCheck, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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if self.mediacheck:
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return "rd.live.check"
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class DriverDisk(commands.driverdisk.F14_DriverDisk, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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dd_args = []
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for dd in self.driverdiskList:
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if dd.partition:
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dd_args.append("inst.dd=hd:%s" % dd.partition)
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elif dd.source:
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dd_args.append("inst.dd=%s" % dd.source)
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elif dd.biospart:
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dd_args.append("inst.dd=bd:%s" % dd.biospart)
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return "\n".join(dd_args)
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class Network(commands.network.F22_Network, DracutArgsMixin):
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def dracut_args(self, args, lineno, net):
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'''
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NOTE: The first 'network' line get special treatment:
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* '--activate' is always enabled
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* '--device' is optional (defaults to the 'ksdevice=' boot arg)
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* the device gets brought online in initramfs
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'''
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netline = None
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# Setting only hostname in kickstart
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if not net.device and not self.handler.ksdevice \
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and setting_only_hostname(net, args):
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return None
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# first 'network' line
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if len(self.network) == 1:
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net.activate = True
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# Note that there may be no net.device and no ksdevice if inst.ks=file:/ks.cfg
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# If that is the case, fall into ksnet_to_dracut with net.device=None and let
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# it handle things.
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if not net.device:
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if self.handler.ksdevice:
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net.device = self.handler.ksdevice
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log.info("Using ksdevice %s for missing --device in first kickstart network command", self.handler.ksdevice)
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if net.device == "link":
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net.device = first_device_with_link()
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if not net.device:
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log.warn("No device with link found for --device=link")
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return
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else:
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log.info("Using %s as first device with link found", net.device)
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# tell dracut to bring this device up
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netline = ksnet_to_dracut(args, lineno, net, bootdev=True)
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else:
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# all subsequent 'network' lines require '--device'
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if not net.device or net.device == "link":
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log.error("'%s': missing --device", " ".join(args))
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return
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# write ifcfg so NM will set up the device correctly later
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ksnet_to_ifcfg(net)
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return netline
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class DisplayMode(commands.displaymode.FC3_DisplayMode, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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if self.displayMode == DISPLAY_MODE_CMDLINE:
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return "inst.cmdline"
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elif self.displayMode == DISPLAY_MODE_TEXT:
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return "inst.text"
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elif self.displayMode == DISPLAY_MODE_GRAPHICAL:
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return "inst.graphical"
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class Bootloader(commands.bootloader.F21_Bootloader, DracutArgsMixin):
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def dracut_args(self, args, lineno, obj):
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if self.extlinux:
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return "extlinux"
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# FUTURE: keymap, lang... device? selinux?
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dracutCmds = {
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'cdrom': Cdrom,
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'harddrive': HardDrive,
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'nfs': NFS,
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'url': URL,
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'updates': Updates,
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'mediacheck': MediaCheck,
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'driverdisk': DriverDisk,
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'network': Network,
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'cmdline': DisplayMode,
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'graphical': DisplayMode,
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'text': DisplayMode,
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'bootloader': Bootloader,
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}
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handlerclass = returnClassForVersion()
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class DracutHandler(handlerclass):
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def __init__(self):
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handlerclass.__init__(self, commandUpdates=dracutCmds)
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self.output = []
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self.ksdevice = None
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def dispatcher(self, args, lineno):
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obj = handlerclass.dispatcher(self, args, lineno)
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# and execute any specified dracut_args
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cmd = args[0]
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# the commands member is implemented by the class returned
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# by returnClassForVersion
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# pylint: disable=no-member
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command = self.commands[cmd]
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if hasattr(command, "dracut_args"):
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log.debug("kickstart line %u: handling %s", lineno, cmd)
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self.output.append(command.dracut_args(args, lineno, obj))
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return obj
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def init_logger(level=None):
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if level is None and 'rd.debug' in proc_cmdline:
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level = logging.DEBUG
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logfmt = "%(name)s %(levelname)s: %(message)s"
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logging.basicConfig(format=logfmt, level=level)
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logger = logging.getLogger('parse-kickstart')
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return logger
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def is_mac(addr):
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return addr and len(addr) == 17 and addr.count(":") == 5 # good enough
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def find_devname(mac):
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for netif in os.listdir("/sys/class/net"):
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thismac = readsysfile("/sys/class/net/%s/address" % netif)
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if thismac.lower() == mac.lower():
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return netif
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def s390_settings(device):
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cfg = {
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'SUBCHANNELS': '',
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'NETTYPE': '',
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'OPTIONS': ''
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}
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subchannels = []
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for symlink in sorted(glob.glob("/sys/class/net/%s/device/cdev[0-9]*" % device)):
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subchannels.append(os.path.basename(os.readlink(symlink)))
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if not subchannels:
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return cfg
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cfg['SUBCHANNELS'] = ','.join(subchannels)
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## cat /etc/ccw.conf
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#qeth,0.0.0900,0.0.0901,0.0.0902,layer2=0,portname=FOOBAR,portno=0
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#
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#SUBCHANNELS="0.0.0900,0.0.0901,0.0.0902"
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#NETTYPE="qeth"
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#OPTIONS="layer2=1 portname=FOOBAR portno=0"
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with open('/etc/ccw.conf') as f:
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# pylint: disable=redefined-outer-name
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for line in f:
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if cfg['SUBCHANNELS'] in line:
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items = line.strip().split(',')
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cfg['NETTYPE'] = items[0]
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cfg['OPTIONS'] = " ".join(i for i in items[1:] if '=' in i)
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break
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return cfg
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def ksnet_to_dracut(args, lineno, net, bootdev=False):
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'''Translate the kickstart network data into dracut network data.'''
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# pylint: disable=redefined-outer-name
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line = []
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ip=""
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autoconf=""
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if is_mac(net.device): # this is a MAC - find the interface name
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mac = net.device
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net.device = find_devname(mac)
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if net.device is None: # iface not active - pick a name for it
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net.device = "ksdev0" # we only get called once, so this is OK
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line.append("ifname=%s:%s" % (net.device, mac.lower()))
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# NOTE: dracut currently only does ipv4 *or* ipv6, so only one ip=arg..
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if net.bootProto in (BOOTPROTO_DHCP, BOOTPROTO_BOOTP):
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autoconf="dhcp"
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elif net.bootProto == BOOTPROTO_IBFT:
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autoconf="ibft"
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elif net.bootProto == BOOTPROTO_QUERY:
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log.error("'%s': --bootproto=query is deprecated", " ".join(args))
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elif net.bootProto == BOOTPROTO_STATIC:
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req = ("gateway", "netmask", "nameserver", "ip")
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missing = ", ".join("--%s" % i for i in req if not hasattr(net, i))
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if missing:
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log.warn("line %u: network missing %s", lineno, missing)
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else:
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ip="{0.ip}::{0.gateway}:{0.netmask}:" \
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"{0.hostname}:{0.device}:none:{0.mtu}".format(net)
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elif net.ipv6 == "auto":
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autoconf="auto6"
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elif net.ipv6 == "dhcp":
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autoconf="dhcp6"
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elif net.ipv6:
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ip="[{0.ipv6}]::{0.ipv6gateway}:{0.netmask}:" \
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"{0.hostname}:{0.device}:none:{0.mtu}".format(net)
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if autoconf:
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if net.device or net.mtu:
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ip="%s:%s:%s" % (net.device, autoconf, net.mtu)
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else:
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ip=autoconf
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if ip:
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line.append("ip=%s" % ip)
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for ns in net.nameserver.split(","):
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if ns:
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line.append("nameserver=%s" % ns)
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if bootdev:
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if net.device:
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line.append("bootdev=%s" % net.device)
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# touch /tmp/net.ifaces to make sure dracut brings up network
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open(TMPDIR+"/net.ifaces", "a")
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if net.essid or net.wepkey or net.wpakey:
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# NOTE: does dracut actually support wireless? (do we care?)
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log.error("'%s': dracut doesn't support wireless networks",
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" ".join(args))
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return " ".join(line)
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def add_s390_settings(dev, ifcfg):
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s390cfg = s390_settings(dev)
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if s390cfg['SUBCHANNELS']:
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ifcfg.pop('HWADDR', None)
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ifcfg['SUBCHANNELS'] = s390cfg['SUBCHANNELS']
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if s390cfg['NETTYPE']:
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ifcfg['NETTYPE'] = s390cfg['NETTYPE']
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if s390cfg['OPTIONS']:
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ifcfg['OPTIONS'] = s390cfg['OPTIONS']
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def ksnet_to_ifcfg(net, filename=None):
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'''Write an ifcfg file for the given kickstart network config'''
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dev = net.device
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if is_mac(dev):
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dev = find_devname(dev)
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if not dev:
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return
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if (not os.path.isdir("/sys/class/net/%s" % dev)
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and not net.bondslaves and not net.teamslaves and not net.bridgeslaves):
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log.info("can't find device %s", dev)
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return
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ifcfg = dict()
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if filename is None:
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filename = TMPDIR+"/ifcfg/ifcfg-%s" % dev
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if not os.path.isdir(TMPDIR+"/ifcfg"):
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os.makedirs(TMPDIR+"/ifcfg")
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ifcfg['DEVICE'] = dev
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hwaddr = readsysfile("/sys/class/net/%s/address" % dev)
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if "ifname={0}:{1}".format(dev, hwaddr).upper() in open("/proc/cmdline").read().upper():
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# rename by initscript's 60-net-rules on target system after switchroot
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ifcfg['HWADDR'] = hwaddr
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ifcfg['UUID'] = str(uuid.uuid4())
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# we set real ONBOOT value in anaconda, here
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# we use it to activate devcies by NM on start
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ifcfg['ONBOOT'] = "yes" if net.activate else "no"
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add_s390_settings(dev, ifcfg)
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# dhcp etc.
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ifcfg['BOOTPROTO'] = net.bootProto
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if net.bootProto == 'static':
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ifcfg['IPADDR'] = net.ip
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ifcfg['NETMASK'] = net.netmask
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ifcfg['GATEWAY'] = net.gateway
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if net.bootProto == 'dhcp':
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if net.hostname:
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ifcfg['DHCP_HOSTNAME'] = net.hostname
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# ipv6 settings
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if net.noipv6:
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ifcfg['IPV6INIT'] = "no"
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else:
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ifcfg['IPV6INIT'] = "yes"
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if net.ipv6 == 'dhcp':
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ifcfg['DHCPV6C'] = "yes"
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ifcfg['IPV6_AUTOCONF'] = "no"
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if net.ipv6gateway:
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ifcfg['IPV6_DEFAULTGW'] = net.ipv6gateway
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elif net.ipv6 == 'auto':
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ifcfg['IPV6_AUTOCONF'] = "yes" # NOTE: redundant (this is the default)
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elif ':' in net.ipv6:
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ifcfg['IPV6ADDR'] = net.ipv6
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ifcfg['IPV6_AUTOCONF'] = "no"
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# misc stuff
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if net.mtu:
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ifcfg['MTU'] = net.mtu
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if net.nameserver:
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for i, ip in enumerate(net.nameserver.split(",")):
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ifcfg["DNS%d" % (i+1)] = ip
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if net.nodefroute:
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ifcfg['DEFROUTE'] = "no"
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# FUTURE: dhcpclass, ethtool, essid/wepkey/wpakay, etc.
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if net.bootProto == 'dhcp':
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srcpath = TMPDIR+"/dhclient.%s.lease" % dev
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dstdir = TMPDIR+"/ifcfg-leases"
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dstpath = "%s/dhclient-%s-%s.lease" % (dstdir, ifcfg['UUID'], dev)
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if os.path.exists(srcpath):
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if not os.path.isdir(dstdir):
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os.makedirs(dstdir)
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shutil.copyfile(srcpath, dstpath)
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if net.bondslaves:
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ifcfg.pop('HWADDR', None)
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ifcfg['TYPE'] = "Bond"
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ifcfg['BONDING_MASTER'] = "yes"
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ifcfg['NAME'] = "Bond connection %s" % dev
|
|
if ';' in net.bondopts:
|
|
sep = ";"
|
|
else:
|
|
sep = ","
|
|
ifcfg['BONDING_OPTS'] = '"' + " ".join(net.bondopts.split(sep)) + '"'
|
|
|
|
for i, slave in enumerate(net.bondslaves.split(","), 1):
|
|
slave_ifcfg = {
|
|
'TYPE' : "Ethernet",
|
|
'NAME' : "%s slave %s" % (dev, i),
|
|
'UUID' : str(uuid.uuid4()),
|
|
'ONBOOT' : "yes",
|
|
'MASTER' : ifcfg['UUID'],
|
|
'HWADDR' : readsysfile("/sys/class/net/%s/address" % slave),
|
|
}
|
|
add_s390_settings(slave, slave_ifcfg)
|
|
slave_filename = TMPDIR+"/ifcfg/ifcfg-%s" % "_".join(slave_ifcfg['NAME'].split(" "))
|
|
log.info("writing ifcfg %s for slave %s of bond %s", slave_filename, slave, dev)
|
|
write_ifcfg(slave_filename, slave_ifcfg)
|
|
|
|
if net.teamslaves:
|
|
|
|
ifcfg.pop('HWADDR', None)
|
|
ifcfg['TYPE'] = "Team"
|
|
ifcfg['NAME'] = "Team connection %s" % dev
|
|
ifcfg['TEAM_CONFIG'] = "'" + net.teamconfig + "'"
|
|
|
|
for i, (slave, cfg) in enumerate(net.teamslaves):
|
|
slave_ifcfg = {
|
|
'DEVICE': slave,
|
|
'DEVICETYPE' : "TeamPort",
|
|
'NAME' : "%s slave %s" % (dev, i),
|
|
'UUID' : str(uuid.uuid4()),
|
|
'ONBOOT' : "yes",
|
|
'TEAM_MASTER' : dev,
|
|
# 'HWADDR' : readsysfile("/sys/class/net/%s/address" % slave),
|
|
}
|
|
if cfg:
|
|
slave_ifcfg['TEAM_PORT_CONFIG'] = "'" + cfg + "'"
|
|
|
|
slave_filename = TMPDIR+"/ifcfg/ifcfg-%s" % "_".join(slave_ifcfg['NAME'].split(" "))
|
|
log.info("writing ifcfg %s for slave %s of team %s", slave_filename, slave, dev)
|
|
write_ifcfg(slave_filename, slave_ifcfg)
|
|
|
|
if net.bridgeslaves:
|
|
|
|
ifcfg.pop('HWADDR', None)
|
|
ifcfg['TYPE'] = "Bridge"
|
|
ifcfg['NAME'] = "Bridge connection %s" % dev
|
|
|
|
options = {}
|
|
for opt in net.bridgeopts.split(","):
|
|
key, _, value = opt.partition("=")
|
|
if not value:
|
|
log.error("Invalid bridge option %s", opt)
|
|
continue
|
|
key = key.replace('-', '_')
|
|
options[key] = value
|
|
stp = options.pop("stp", None)
|
|
if stp:
|
|
ifcfg['STP'] = stp
|
|
delay = options.pop("forward_delay", None)
|
|
if delay:
|
|
ifcfg['DELAY'] = delay
|
|
if options:
|
|
keyvalues = ["%s=%s" % (key, options[key]) for key in options]
|
|
ifcfg['BRIDGING_OPTS'] = '"' + " ".join(keyvalues) + '"'
|
|
|
|
for i, slave in enumerate(net.bridgeslaves.split(","), 1):
|
|
slave_ifcfg = {
|
|
'TYPE' : "Ethernet",
|
|
'NAME' : "%s slave %s" % (dev, i),
|
|
'UUID' : str(uuid.uuid4()),
|
|
'ONBOOT' : "yes",
|
|
'BRIDGE' : dev,
|
|
'HWADDR' : readsysfile("/sys/class/net/%s/address" % slave),
|
|
}
|
|
slave_filename = TMPDIR+"/ifcfg/ifcfg-%s" % "_".join(slave_ifcfg['NAME'].split(" "))
|
|
log.info("writing ifcfg %s for slave %s of bridge %s", slave_filename, slave, dev)
|
|
write_ifcfg(slave_filename, slave_ifcfg)
|
|
|
|
if net.vlanid:
|
|
interface_name = net.interfacename or "%s.%s" % (dev, net.vlanid)
|
|
ifcfg.pop('HWADDR', None)
|
|
ifcfg['TYPE'] = "Vlan"
|
|
ifcfg['VLAN'] = "yes"
|
|
ifcfg['VLAN_ID'] = net.vlanid
|
|
ifcfg['NAME'] = "VLAN connection %s" % interface_name
|
|
ifcfg['DEVICE'] = interface_name
|
|
ifcfg['PHYSDEV'] = dev
|
|
filename = TMPDIR+"/ifcfg/ifcfg-%s" % interface_name
|
|
|
|
log.info("writing ifcfg %s for %s", filename, dev)
|
|
if write_ifcfg(filename, ifcfg):
|
|
return filename
|
|
|
|
def write_ifcfg(filename, ifcfg):
|
|
try:
|
|
with open(filename, "w") as f:
|
|
f.write('# Generated by parse-kickstart\n')
|
|
for k,v in list(ifcfg.items()):
|
|
f.write("%s=%s\n" % (k,v))
|
|
except IOError as e:
|
|
log.error("can't write %s: %s", filename, e)
|
|
return False
|
|
return True
|
|
|
|
def process_kickstart(ksfile):
|
|
handler = DracutHandler()
|
|
try:
|
|
handler.ksdevice = proc_cmdline['ksdevice']
|
|
except KeyError:
|
|
log.debug("ksdevice argument is not available")
|
|
parser = KickstartParser(handler, missingIncludeIsFatal=False, errorsAreFatal=False)
|
|
parser.registerSection(NullSection(handler, sectionOpen="%addon"))
|
|
parser.registerSection(NullSection(handler, sectionOpen="%anaconda"))
|
|
log.info("processing kickstart file %s", ksfile)
|
|
processed_file = preprocessKickstart(ksfile)
|
|
try:
|
|
parser.readKickstart(processed_file)
|
|
except KickstartError as e:
|
|
log.error(str(e))
|
|
with open(TMPDIR+"/ks.info", "a") as f:
|
|
f.write('parsed_kickstart="%s"\n' % processed_file)
|
|
log.info("finished parsing kickstart")
|
|
return processed_file, handler.output
|
|
|
|
if __name__ == '__main__':
|
|
log = init_logger()
|
|
|
|
# Override tmp directory path for testing. Don't use argparse because we don't want to
|
|
# include that dependency in the initramfs. Pass '--tmpdir /path/to/tmp/'
|
|
if "--tmpdir" in sys.argv:
|
|
idx = sys.argv.index("--tmpdir")
|
|
try:
|
|
sys.argv.pop(idx)
|
|
TMPDIR = os.path.normpath(sys.argv.pop(idx))
|
|
except IndexError:
|
|
pass
|
|
|
|
for path in sys.argv[1:]:
|
|
outfile, output = process_kickstart(path)
|
|
for line in (l for l in output if l):
|
|
print(line)
|