302 lines
10 KiB
Python
302 lines
10 KiB
Python
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#
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# upgrade.py - Existing install probe and upgrade procedure
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#
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# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author(s): Matt Wilson <msw@redhat.com>
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#
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import isys
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import os
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import iutil
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import time
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import sys
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import os.path
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import shutil
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import string
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import selinux
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from flags import flags
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from constants import *
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from product import productName
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from storage import findExistingRootDevices, getReleaseString
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from storage import mountExistingSystem
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from storage.formats import getFormat
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import gettext
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_ = lambda x: gettext.ldgettext("anaconda", x)
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import rpm
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import logging
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log = logging.getLogger("anaconda")
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def queryUpgradeContinue(anaconda):
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if anaconda.dir == DISPATCH_FORWARD:
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return
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rc = anaconda.intf.messageWindow(_("Proceed with upgrade?"),
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_("The file systems of the Linux installation "
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"you have chosen to upgrade have already been "
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"mounted. You cannot go back past this point. "
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"\n\n") +
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_("Would you like to continue with the upgrade?"),
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type="custom", custom_icon=["error","error"],
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custom_buttons=[_("_Exit installer"), _("_Continue")])
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if rc == 0:
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sys.exit(0)
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return DISPATCH_FORWARD
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def setUpgradeRoot(anaconda):
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anaconda.upgradeRoot = []
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root_device = None
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# kickstart can pass device as device name or uuid. No quotes allowed.
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if anaconda.ksdata and anaconda.ksdata.upgrade.root_device is not None:
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root_device = anaconda.ksdata.upgrade.root_device
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for (dev, label) in anaconda.rootParts:
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if ((root_device is not None) and
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(root_device == dev.name or root_device == "UUID=%s" % dev.format.uuid)):
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anaconda.upgradeRoot.insert(0, (dev,label))
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else:
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anaconda.upgradeRoot.append((dev,label))
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def findRootParts(anaconda):
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if anaconda.dir == DISPATCH_BACK:
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return
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if anaconda.rootParts is None:
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anaconda.rootParts = findExistingRoots(anaconda,
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flags.cmdline.has_key("upgradeany"))
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setUpgradeRoot(anaconda)
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if anaconda.rootParts is not None and len(anaconda.rootParts) > 0:
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anaconda.dispatch.skipStep("findinstall", skip = 0)
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if productName.find("Red Hat Enterprise Linux") == -1:
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anaconda.dispatch.skipStep("installtype", skip = 1)
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else:
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anaconda.dispatch.skipStep("findinstall", skip = 1)
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anaconda.dispatch.skipStep("installtype", skip = 0)
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def findExistingRoots(anaconda, upgradeany=False):
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rootparts = findExistingRootDevices(anaconda, upgradeany=upgradeany)
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return rootparts
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def bindMountDevDirectory(instPath):
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getFormat("bind",
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device="/dev",
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mountpoint="/dev",
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exists=True).mount(chroot=instPath)
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# returns None if no filesystem exist to migrate
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def upgradeMigrateFind(anaconda):
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migents = anaconda.storage.migratableDevices
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if not migents or len(migents) < 1:
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anaconda.dispatch.skipStep("upgrademigratefs")
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else:
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anaconda.dispatch.skipStep("upgrademigratefs", skip = 0)
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# returns None if no more swap is needed
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def upgradeSwapSuggestion(anaconda):
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# mem is in kb -- round it up to the nearest 4Mb
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mem = iutil.memInstalled()
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rem = mem % 16384
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if rem:
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mem = mem + (16384 - rem)
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mem = mem / 1024
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anaconda.dispatch.skipStep("addswap", 0)
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# don't do this if we have more then 250 MB
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if mem > 250:
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anaconda.dispatch.skipStep("addswap", 1)
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return
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swap = iutil.swapAmount() / 1024
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# if we have twice as much swap as ram and at least 192 megs
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# total, we're safe
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if (swap >= (mem * 1.5)) and (swap + mem >= 192):
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anaconda.dispatch.skipStep("addswap", 1)
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return
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# if our total is 512 megs or more, we should be safe
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if (swap + mem >= 512):
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anaconda.dispatch.skipStep("addswap", 1)
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return
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fsList = []
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for device in anaconda.storage.fsset.devices:
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if not device.format:
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continue
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if device.format.mountable and device.format.linuxNative:
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if not device.format.status:
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continue
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space = isys.pathSpaceAvailable(anaconda.rootPath + device.format.mountpoint)
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if space > 16:
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info = (device, space)
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fsList.append(info)
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suggestion = mem * 2 - swap
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if (swap + mem + suggestion) < 192:
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suggestion = 192 - (swap + mem)
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if suggestion < 32:
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suggestion = 32
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suggSize = 0
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suggMnt = None
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for (device, size) in fsList:
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if (size > suggSize) and (size > (suggestion + 100)):
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suggDev = device
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anaconda.upgradeSwapInfo = (fsList, suggestion, suggDev)
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# XXX handle going backwards
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def upgradeMountFilesystems(anaconda):
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# mount everything and turn on swap
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try:
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mountExistingSystem(anaconda, anaconda.upgradeRoot[0], allowDirty = 0)
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except ValueError as e:
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log.error("Error mounting filesystem: %s" % e)
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anaconda.intf.messageWindow(_("Mount failed"),
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_("The following error occurred when mounting the file "
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"systems listed in /etc/fstab. Please fix this problem "
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"and try to upgrade again.\n%s" % e))
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sys.exit(0)
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except IndexError as e:
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# The upgrade root is search earlier but we give the message here.
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log.debug("No upgrade root was found.")
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if anaconda.ksdata and anaconda.ksdata.upgrade.upgrade:
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anaconda.intf.messageWindow(_("Upgrade root not found"),
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_("The root for the previously installed system was not "
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"found."), type="custom",
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custom_icon="info",
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custom_buttons=[_("Exit installer")])
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sys.exit(0)
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else:
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rc = anaconda.intf.messageWindow(_("Upgrade root not found"),
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_("The root for the previously installed system was not "
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"found. You can exit installer or backtrack to choose "
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"installation instead of upgrade."),
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type="custom",
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custom_buttons = [ _("_Back"),
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_("_Exit installer") ],
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custom_icon="question")
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if rc == 0:
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return DISPATCH_BACK
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elif rc == 1:
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sys.exit(0)
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checkLinks = ( '/etc', '/var', '/var/lib', '/var/lib/rpm',
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'/boot', '/tmp', '/var/tmp', '/root',
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'/bin/sh', '/usr/tmp')
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badLinks = []
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for n in checkLinks:
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if not os.path.islink(anaconda.rootPath + n): continue
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l = os.readlink(anaconda.rootPath + n)
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if l[0] == '/':
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badLinks.append(n)
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if badLinks:
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message = _("The following files are absolute symbolic "
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"links, which we do not support during an "
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"upgrade. Please change them to relative "
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"symbolic links and restart the upgrade.\n\n")
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for n in badLinks:
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message = message + '\t' + n + '\n'
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anaconda.intf.messageWindow(_("Absolute Symlinks"), message)
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sys.exit(0)
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# fix for 80446
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badLinks = []
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mustBeLinks = ( '/usr/tmp', )
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for n in mustBeLinks:
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if not os.path.islink(anaconda.rootPath + n):
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badLinks.append(n)
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if badLinks:
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message = _("The following are directories which should instead "
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"be symbolic links, which will cause problems with the "
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"upgrade. Please return them to their original state "
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"as symbolic links and restart the upgrade.\n\n")
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for n in badLinks:
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message = message + '\t' + n + '\n'
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anaconda.intf.messageWindow(_("Invalid Directories"), message)
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sys.exit(0)
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anaconda.storage.turnOnSwap(upgrading=True)
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anaconda.storage.mkDevRoot()
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# Move /etc/rpm/platform out of the way.
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if os.path.exists(anaconda.rootPath + "/etc/rpm/platform"):
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shutil.move(anaconda.rootPath + "/etc/rpm/platform",
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anaconda.rootPath + "/etc/rpm/platform.rpmsave")
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# if they've been booting with selinux disabled, then we should
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# disable it during the install as well (#242510)
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try:
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if os.path.exists(anaconda.rootPath + "/.autorelabel"):
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ctx = selinux.getfilecon(anaconda.rootPath + "/.autorelabel")[1]
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if not ctx or ctx == "unlabeled":
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flags.selinux = False
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log.info("Disabled SELinux for upgrade based on /.autorelabel")
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except Exception, e:
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log.warning("error checking selinux state: %s" %(e,))
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def setSteps(anaconda):
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dispatch = anaconda.dispatch
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dispatch.setStepList(
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"language",
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"keyboard",
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"welcome",
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"filtertype",
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"filter",
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"cleardiskssel",
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"installtype",
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"storageinit",
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"findrootparts",
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"findinstall",
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"upgrademount",
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"upgrademigfind",
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"upgrademigratefs",
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"enablefilesystems",
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"upgradecontinue",
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"reposetup",
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"upgbootloader",
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"checkdeps",
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"dependencies",
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"confirmupgrade",
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"postselection",
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"reipl",
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"install",
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"preinstallconfig",
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"installpackages",
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"postinstallconfig",
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"instbootloader",
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"dopostaction",
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"methodcomplete",
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"postscripts",
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"copylogs",
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"complete"
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)
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if not iutil.isX86():
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dispatch.skipStep("bootloader")
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if not iutil.isX86():
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dispatch.skipStep("upgbootloader")
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