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# DistUpgradeController.py
#
# Copyright (c) 2004-2008 Canonical
#
# Author: Michael Vogt <michael.vogt@ubuntu.com>
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
import apt
import apt_pkg
import sys
import os
import subprocess
import locale
import logging
import shutil
import glob
import time
import copy
from configparser import NoOptionError
from configparser import ConfigParser as SafeConfigParser
from .utils import (country_mirror,
url_downloadable,
check_and_fix_xbit,
get_arch,
iptables_active,
inside_chroot,
get_string_with_no_auth_from_source_entry,
is_child_of_process_name,
inhibit_sleep)
from string import Template
from urllib.parse import urlsplit
from .DistUpgradeView import (
STEP_PREPARE,
STEP_MODIFY_SOURCES,
STEP_FETCH,
STEP_INSTALL,
STEP_CLEANUP,
STEP_REBOOT,
)
from .DistUpgradeCache import MyCache
from .DistUpgradeConfigParser import DistUpgradeConfig
from .DistUpgradeQuirks import DistUpgradeQuirks
from .DistUpgradeAptCdrom import AptCdrom
from .DistUpgradeAufs import setupAufs, aufsOptionsAndEnvironmentSetup
# workaround broken relative import in python-apt (LP: #871007), we
# want the local version of distinfo.py from oneiric, but because of
# a bug in python-apt we will get the natty version that does not
# know about "Component.parent_component" leading to a crash
from . import distinfo
from . import sourceslist
sourceslist.DistInfo = distinfo.DistInfo
from .sourceslist import SourcesList, is_mirror
from .distro import get_distro, NoDistroTemplateException
from .DistUpgradeGettext import gettext as _
from .DistUpgradeGettext import ngettext
import gettext
from .DistUpgradeCache import (CacheExceptionDpkgInterrupted,
CacheExceptionLockingFailed,
NotEnoughFreeSpaceError)
from .DistUpgradeApport import run_apport
REBOOT_REQUIRED_FILE = "/var/run/reboot-required"
def component_ordering_key(a):
""" key() function for sorted to ensure "correct" component ordering """
ordering = ["main", "restricted", "universe", "multiverse"]
try:
return ordering.index(a)
except ValueError:
# ensure to sort behind the "official" components, order is not
# really important for those
return len(ordering)+1
class NoBackportsFoundException(Exception):
pass
class DistUpgradeController(object):
""" this is the controller that does most of the work """
def __init__(self, distUpgradeView, options=None, datadir=None):
# setup the paths
localedir = "/usr/share/locale/"
if datadir == None or datadir == '.':
datadir = os.getcwd()
localedir = os.path.join(datadir,"mo")
self.datadir = datadir
self.options = options
# init gettext
gettext.bindtextdomain("ubuntu-release-upgrader",localedir)
gettext.textdomain("ubuntu-release-upgrader")
# setup the view
logging.debug("Using '%s' view" % distUpgradeView.__class__.__name__)
self._view = distUpgradeView
self._view.updateStatus(_("Reading cache"))
self.cache = None
if not self.options or self.options.withNetwork == None:
self.useNetwork = True
else:
self.useNetwork = self.options.withNetwork
if options:
cdrompath = options.cdromPath
else:
cdrompath = None
self.aptcdrom = AptCdrom(distUpgradeView, cdrompath)
# the configuration
self.config = DistUpgradeConfig(datadir)
self.sources_backup_ext = "."+self.config.get("Files","BackupExt")
# move some of the options stuff into the self.config,
# ConfigParser deals only with strings it seems *sigh*
self.config.add_section("Options")
self.config.set("Options","withNetwork", str(self.useNetwork))
# aufs stuff
aufsOptionsAndEnvironmentSetup(self.options, self.config)
# some constants here
self.fromDist = self.config.get("Sources","From")
self.toDist = self.config.get("Sources","To")
self.origin = self.config.get("Sources","ValidOrigin")
self.arch = get_arch()
# we run with --force-overwrite by default
if "RELEASE_UPGRADE_NO_FORCE_OVERWRITE" not in os.environ:
logging.debug("enable dpkg --force-overwrite")
apt_pkg.config.set("DPkg::Options::","--force-overwrite")
# we run in full upgrade mode by default
self._partialUpgrade = False
# install the quirks handler
self.quirks = DistUpgradeQuirks(self, self.config)
# install a logind sleep inhibitor
self.inhibitor_fd = inhibit_sleep()
# setup env var
os.environ["RELEASE_UPGRADE_IN_PROGRESS"] = "1"
os.environ["PYCENTRAL_FORCE_OVERWRITE"] = "1"
os.environ["PATH"] = "%s:%s" % (os.getcwd()+"/imported",
os.environ["PATH"])
check_and_fix_xbit("./imported/invoke-rc.d")
# set max retries
maxRetries = self.config.getint("Network","MaxRetries")
apt_pkg.config.set("Acquire::Retries", str(maxRetries))
# max sizes for dpkgpm for large installs (see linux/limits.h and
# linux/binfmts.h)
apt_pkg.config.set("Dpkg::MaxArgs", str(64*1024))
apt_pkg.config.set("Dpkg::MaxArgBytes", str(128*1024))
# smaller to avoid hangs
apt_pkg.config.set("Acquire::http::Timeout","20")
apt_pkg.config.set("Acquire::ftp::Timeout","20")
# no list cleanup here otherwise a "cancel" in the upgrade
# will not restore the full state (lists will be missing)
apt_pkg.config.set("Apt::Get::List-Cleanup", "false")
# forced obsoletes
self.forced_obsoletes = self.config.getlist("Distro","ForcedObsoletes")
# list of valid mirrors that we can add
self.valid_mirrors = self.config.getListFromFile("Sources","ValidMirrors")
# third party mirrors
self.valid_3p_mirrors = []
if self.config.has_section('ThirdPartyMirrors'):
self.valid_3p_mirrors = [pair[1] for pair in
self.config.items('ThirdPartyMirrors')]
# debugging
#apt_pkg.config.set("DPkg::Options::","--debug=0077")
# apt cron job
self._aptCronJobPerms = 0o755
def openCache(self, lock=True, restore_sources_list_on_fail=False):
logging.debug("openCache()")
if self.cache is None:
self.quirks.run("PreCacheOpen")
else:
self.cache.release_lock()
self.cache.unlock_lists_dir()
# this loop will try getting the lock a couple of times
MAX_LOCK_RETRIES = 20
lock_retry = 0
while True:
try:
# exit here once the cache is ready
return self._openCache(lock)
except CacheExceptionLockingFailed as e:
# wait a bit
lock_retry += 1
self._view.processEvents()
time.sleep(0.1)
logging.debug(
"failed to lock the cache, retrying (%i)" % lock_retry)
# and give up after some time
if lock_retry > MAX_LOCK_RETRIES:
logging.error("Cache can not be locked (%s)" % e)
self._view.error(_("Unable to get exclusive lock"),
_("This usually means that another "
"package management application "
"(like apt-get or aptitude) "
"already running. Please close that "
"application first."));
if restore_sources_list_on_fail:
self.abort()
else:
sys.exit(1)
def _openCache(self, lock):
try:
self.cache = MyCache(self.config,
self._view,
self.quirks,
self._view.getOpCacheProgress(),
lock)
# alias name for the plugin interface code
self.apt_cache = self.cache
# if we get a dpkg error that it was interrupted, just
# run dpkg --configure -a
except CacheExceptionDpkgInterrupted:
logging.warning("dpkg interrupted, calling dpkg --configure -a")
cmd = ["/usr/bin/dpkg","--configure","-a"]
if os.environ.get("DEBIAN_FRONTEND") == "noninteractive":
cmd.append("--force-confold")
self._view.getTerminal().call(cmd)
self.cache = MyCache(self.config,
self._view,
self.quirks,
self._view.getOpCacheProgress())
self.cache.partialUpgrade = self._partialUpgrade
logging.debug("/openCache(), new cache size %i" % len(self.cache))
def _viewSupportsSSH(self):
"""
Returns True if this view support upgrades over ssh.
In theory all views should support it, but for savety
we do only allow text ssh upgrades (see LP: #322482)
"""
supported = self.config.getlist("View","SupportSSH")
if self._view.__class__.__name__ in supported:
return True
return False
def _sshMagic(self):
""" this will check for server mode and if we run over ssh.
if this is the case, we will ask and spawn a additional
daemon (to be sure we have a spare one around in case
of trouble)
"""
pidfile = os.path.join("/var/run/release-upgrader-sshd.pid")
if (not os.path.exists(pidfile) and
os.path.isdir("/proc") and
is_child_of_process_name("sshd")):
# check if the frontend supports ssh upgrades (see lp: #322482)
if not self._viewSupportsSSH():
logging.error("upgrade over ssh not allowed")
self._view.error(_("Upgrading over remote connection not supported"),
_("You are running the upgrade over a "
"remote ssh connection with a frontend "
"that does "
"not support this. Please try a text "
"mode upgrade with 'do-release-upgrade'."
"\n\n"
"The upgrade will "
"abort now. Please try without ssh.")
)
sys.exit(1)
return False
# ask for a spare one to start (and below 1024)
port = 1022
res = self._view.askYesNoQuestion(
_("Continue running under SSH?"),
_("This session appears to be running under ssh. "
"It is not recommended to perform a upgrade "
"over ssh currently because in case of failure "
"it is harder to recover.\n\n"
"If you continue, an additional ssh daemon will be "
"started at port '%s'.\n"
"Do you want to continue?") % port)
# abort
if res == False:
sys.exit(1)
res = subprocess.call(["/usr/sbin/sshd",
"-o", "PidFile=%s" % pidfile,
"-p",str(port)])
if res == 0:
summary = _("Starting additional sshd")
descr = _("To make recovery in case of failure easier, an "
"additional sshd will be started on port '%s'. "
"If anything goes wrong with the running ssh "
"you can still connect to the additional one.\n"
) % port
if iptables_active():
cmd = "iptables -I INPUT -p tcp --dport %s -j ACCEPT" % port
descr += _(
"If you run a firewall, you may need to "
"temporarily open this port. As this is "
"potentially dangerous it's not done automatically. "
"You can open the port with e.g.:\n'%s'") % cmd
self._view.information(summary, descr)
return True
def _tryUpdateSelf(self):
""" this is a helper that is run if we are started from a CD
and we have network - we will then try to fetch a update
of ourself
"""
from .MetaRelease import MetaReleaseCore
from .DistUpgradeFetcherSelf import DistUpgradeFetcherSelf
# check if we run from a LTS
forceLTS=False
if (self.release == "dapper" or
self.release == "hardy" or
self.release == "lucid" or
self.release == "precise"):
forceLTS=True
m = MetaReleaseCore(useDevelopmentRelease=False,
forceLTS=forceLTS)
# this will timeout eventually
self._view.processEvents()
while not m.downloaded.wait(0.1):
self._view.processEvents()
if m.new_dist is None:
logging.error("No new dist found")
return False
# we have a new dist
progress = self._view.getAcquireProgress()
fetcher = DistUpgradeFetcherSelf(new_dist=m.new_dist,
progress=progress,
options=self.options,
view=self._view)
fetcher.run()
def _pythonSymlinkCheck(self):
""" sanity check that /usr/bin/python points to the default
python version. Users tend to modify this symlink, which
breaks stuff in obscure ways (Ubuntu #75557).
"""
logging.debug("_pythonSymlinkCheck run")
if os.path.exists('/usr/share/python/debian_defaults'):
config = SafeConfigParser()
with open('/usr/share/python/debian_defaults') as f:
config.readfp(f)
try:
expected_default = config.get('DEFAULT', 'default-version')
except NoOptionError:
logging.debug("no default version for python found in '%s'" % config)
return False
try:
fs_default_version = os.readlink('/usr/bin/python')
except OSError as e:
logging.error("os.readlink failed (%s)" % e)
return False
if not fs_default_version in (expected_default, os.path.join('/usr/bin', expected_default)):
logging.debug("python symlink points to: '%s', but expected is '%s' or '%s'" % (fs_default_version, expected_default, os.path.join('/usr/bin', expected_default)))
return False
return True
def prepare(self):
""" initial cache opening, sanity checking, network checking """
# first check if that is a good upgrade
self.release = release = subprocess.Popen(["lsb_release","-c","-s"],
stdout=subprocess.PIPE,
universal_newlines=True).communicate()[0].strip()
logging.debug("lsb-release: '%s'" % release)
if not (release == self.fromDist or release == self.toDist):
logging.error("Bad upgrade: '%s' != '%s' " % (release, self.fromDist))
self._view.error(_("Can not upgrade"),
_("An upgrade from '%s' to '%s' is not "
"supported with this tool." % (release, self.toDist)))
sys.exit(1)
# setup aufs
if self.config.getWithDefault("Aufs", "EnableFullOverlay", False):
aufs_rw_dir = self.config.get("Aufs","RWDir")
if not setupAufs(aufs_rw_dir):
logging.error("aufs setup failed")
self._view.error(_("Sandbox setup failed"),
_("It was not possible to create the sandbox "
"environment."))
return False
# all good, tell the user about the sandbox mode
logging.info("running in aufs overlay mode")
self._view.information(_("Sandbox mode"),
_("This upgrade is running in sandbox "
"(test) mode. All changes are written "
"to '%s' and will be lost on the next "
"reboot.\n\n"
"*No* changes written to a system directory "
"from now until the next reboot are "
"permanent.") % aufs_rw_dir)
# setup backports (if we have them)
if self.options and self.options.havePrerequists:
backportsdir = os.getcwd()+"/backports"
logging.info("using backports in '%s' " % backportsdir)
logging.debug("have: %s" % glob.glob(backportsdir+"/*.udeb"))
if os.path.exists(backportsdir+"/usr/bin/dpkg"):
apt_pkg.config.set("Dir::Bin::dpkg",backportsdir+"/usr/bin/dpkg");
if os.path.exists(backportsdir+"/usr/lib/apt/methods"):
apt_pkg.config.set("Dir::Bin::methods",backportsdir+"/usr/lib/apt/methods")
conf = backportsdir+"/etc/apt/apt.conf.d/01ubuntu"
if os.path.exists(conf):
logging.debug("adding config '%s'" % conf)
apt_pkg.read_config_file(apt_pkg.config, conf)
# do the ssh check and warn if we run under ssh
self._sshMagic()
# check python version
if not self._pythonSymlinkCheck():
logging.error("pythonSymlinkCheck() failed, aborting")
self._view.error(_("Can not upgrade"),
_("Your python install is corrupted. "
"Please fix the '/usr/bin/python' symlink."))
sys.exit(1)
# open cache
try:
self.openCache()
except SystemError as e:
logging.error("openCache() failed: '%s'" % e)
return False
if not self.cache.sanity_check(self._view):
return False
# now figure out if we need to go into desktop or
# server mode - we use a heuristic for this
self.serverMode = self.cache.need_server_mode()
if self.serverMode:
os.environ["RELEASE_UPGRADE_MODE"] = "server"
else:
os.environ["RELEASE_UPGRADE_MODE"] = "desktop"
if not self.checkViewDepends():
logging.error("checkViewDepends() failed")
return False
from .DistUpgradeMain import SYSTEM_DIRS
for systemdir in SYSTEM_DIRS:
if os.path.exists(systemdir) and not os.access(systemdir, os.W_OK):
logging.error("%s not writable" % systemdir)
self._view.error(
_("Can not write to '%s'") % systemdir,
_("Its not possible to write to the system directory "
"'%s' on your system. The upgrade can not "
"continue.\n"
"Please make sure that the system directory is "
"writable.") % systemdir)
self.abort()
# FIXME: we may try to find out a bit more about the network
# connection here and ask more intelligent questions
if self.aptcdrom and self.options and self.options.withNetwork == None:
res = self._view.askYesNoQuestion(_("Include latest updates from the Internet?"),
_("The upgrade system can use the internet to "
"automatically download "
"the latest updates and install them during the "
"upgrade. If you have a network connection this is "
"highly recommended.\n\n"
"The upgrade will take longer, but when "
"it is complete, your system will be fully up to "
"date. You can choose not to do this, but you "
"should install the latest updates soon after "
"upgrading.\n"
"If you answer 'no' here, the network is not "
"used at all."),
'Yes')
self.useNetwork = res
self.config.set("Options","withNetwork", str(self.useNetwork))
logging.debug("useNetwork: '%s' (selected by user)" % res)
if res:
self._tryUpdateSelf()
return True
def _sourcesListEntryDownloadable(self, entry):
"""
helper that checks if a sources.list entry points to
something downloadable
"""
logging.debug("verifySourcesListEntry: %s" % entry)
# no way to verify without network
if not self.useNetwork:
logging.debug("skipping downloadable check (no network)")
return True
# check if the entry points to something we can download
uri = "%s/dists/%s/Release" % (entry.uri, entry.dist)
return url_downloadable(uri, logging.debug)
def rewriteSourcesList(self, mirror_check=True):
if mirror_check:
logging.debug("rewriteSourcesList() with mirror_check")
else:
logging.debug("rewriteSourcesList()")
sync_components = self.config.getlist("Sources","Components")
# skip mirror check if special environment is set
# (useful for server admins with internal repos)
if (self.config.getWithDefault("Sources","AllowThirdParty",False) or
"RELEASE_UPGRADER_ALLOW_THIRD_PARTY" in os.environ):
logging.warning("mirror check skipped, *overriden* via config")
mirror_check=False
# check if we need to enable main
main_was_missing = False
if mirror_check == True and self.useNetwork:
# now check if the base-meta pkgs are available in
# the archive or only available as "now"
# -> if not that means that "main" is missing and we
# need to enable it
logging.debug(self.config.getlist("Distro", "BaseMetaPkgs"))
for pkgname in self.config.getlist("Distro", "BaseMetaPkgs"):
logging.debug("Checking pkg: %s" % pkgname)
if ((not pkgname in self.cache or
not self.cache[pkgname].candidate or
len(self.cache[pkgname].candidate.origins) == 0)
or
(self.cache[pkgname].candidate and
len(self.cache[pkgname].candidate.origins) == 1 and
self.cache[pkgname].candidate.origins[0].archive == "now")
):
logging.debug("BaseMetaPkg '%s' has no candidate.origins" % pkgname)
try:
distro = get_distro()
distro.get_sources(self.sources)
distro.enable_component("main")
main_was_missing = True
except NoDistroTemplateException as e:
logging.exception('NoDistroTemplateException raised: %s' % e)
# fallback if everything else does not work,
# we replace the sources.list with lines to
# main and restricted
logging.debug('get_distro().enable_component("main") failed, overwriting sources.list instead as last resort')
comment = " auto generated by ubuntu-release-upgrader"
comps = ["main", "restricted"]
uri = "http://archive.ubuntu.com/ubuntu"
self.sources.add("deb", uri, self.toDist, comps,
comment)
self.sources.add("deb", uri, self.toDist+"-updates",
comps, comment)
self.sources.add("deb",
"http://security.ubuntu.com/ubuntu",
self.toDist+"-security", comps,
comment)
break
# this must map, i.e. second in "from" must be the second in "to"
# (but they can be different, so in theory we could exchange
# component names here)
pockets = self.config.getlist("Sources","Pockets")
fromDists = [self.fromDist] + ["%s-%s" % (self.fromDist, x)
for x in pockets]
toDists = [self.toDist] + ["%s-%s" % (self.toDist,x)
for x in pockets]
self.sources_disabled = False
# Special quirk to remove extras.ubuntu.com
new_list = []
for entry in self.sources.list[:]:
if "/extras.ubuntu.com" in entry.uri:
continue
if entry.line.startswith(
"## This software is not part of Ubuntu, but is offered by third-party"):
continue
if entry.line.startswith(
"## developers who want to ship their latest software."):
continue
new_list.append(entry)
self.sources.list = new_list
# look over the stuff we have
foundToDist = False
# collect information on what components (main,universe) are enabled for what distro (sub)version
# e.g. found_components = { 'hardy':set("main","restricted"), 'hardy-updates':set("main") }
self.found_components = {}
for entry in self.sources.list[:]:
# ignore invalid records or disabled ones
if entry.invalid or entry.disabled:
continue
# we disable breezy cdrom sources to make sure that demoted
# packages are removed
if entry.uri.startswith("cdrom:") and entry.dist == self.fromDist:
logging.debug("disabled '%s' cdrom entry (dist == fromDist)" % entry)
entry.disabled = True
continue
# check if there is actually a lists file for them available
# and disable them if not
elif entry.uri.startswith("cdrom:"):
#
listdir = apt_pkg.config.find_dir("Dir::State::lists")
if not os.path.exists("%s/%s%s_%s_%s" %
(listdir,
apt_pkg.uri_to_filename(entry.uri),
"dists",
entry.dist,
"Release")):
logging.warning("disabling cdrom source '%s' because it has no Release file" % entry)
entry.disabled = True
continue
# special case for archive.canonical.com that needs to
# be rewritten (for pre-gutsy upgrades)
cdist = "%s-commercial" % self.fromDist
if (not entry.disabled and
entry.uri.startswith("http://archive.canonical.com") and
entry.dist == cdist):
entry.dist = self.toDist
entry.comps = ["partner"]
logging.debug("transitioned commercial to '%s' " % entry)
continue
# special case for landscape.canonical.com because they
# don't use a standard archive layout (gutsy->hardy)
# XXX - Is this still relevant?
if (not entry.disabled and
entry.uri.startswith("http://landscape.canonical.com/packages/%s" % self.fromDist)):
logging.debug("commenting landscape.canonical.com out")
entry.disabled = True
continue
# Disable proposed on upgrade to a development release.
if (not entry.disabled and self.options
and self.options.devel_release == True and
"%s-proposed" % self.fromDist in entry.dist):
logging.debug("upgrade to development release, disabling proposed")
entry.dist = "%s-proposed" % self.toDist
entry.comment += _("Not for humans during development stage of release %s") % self.toDist
entry.disabled = True
continue
# handle upgrades from a EOL release and check if there
# is a supported release available
if (not entry.disabled and
"old-releases.ubuntu.com/" in entry.uri):
logging.debug("upgrade from old-releases.ubuntu.com detected")
# test country mirror first, then archive.u.c
for uri in ["http://%sarchive.ubuntu.com/ubuntu" % country_mirror(),
"http://archive.ubuntu.com/ubuntu"]:
test_entry = copy.copy(entry)
test_entry.uri = uri
test_entry.dist = self.toDist
if self._sourcesListEntryDownloadable(test_entry):
logging.info("transition from old-release.u.c to %s" % uri)
entry.uri = uri
break
logging.debug("examining: '%s'" % get_string_with_no_auth_from_source_entry(entry))
# check if it's a mirror (or official site)
validMirror = self.isMirror(entry.uri)
thirdPartyMirror = not mirror_check or self.isThirdPartyMirror(entry.uri)
if validMirror or thirdPartyMirror:
# disabled/security/commercial/extras are special cases
# we use validTo/foundToDist to figure out if we have a
# main archive mirror in the sources.list or if we
# need to add one
validTo = True
if (entry.disabled or
entry.type == "deb-src" or
"/security.ubuntu.com" in entry.uri or
"%s-security" % self.fromDist in entry.dist or
"%s-backports" % self.fromDist in entry.dist or
"/archive.canonical.com" in entry.uri):
validTo = False
if entry.dist in toDists:
# so the self.sources.list is already set to the new
# distro
logging.debug("entry '%s' is already set to new dist" % get_string_with_no_auth_from_source_entry(entry))
foundToDist |= validTo
elif entry.dist in fromDists:
foundToDist |= validTo
entry.dist = toDists[fromDists.index(entry.dist)]
logging.debug("entry '%s' updated to new dist" % get_string_with_no_auth_from_source_entry(entry))
elif entry.type == 'deb-src':
continue
elif validMirror:
# disable all entries that are official but don't
# point to either "to" or "from" dist
entry.disabled = True
self.sources_disabled = True
logging.debug("entry '%s' was disabled (unknown dist)" % get_string_with_no_auth_from_source_entry(entry))
# if we make it to this point, we have an official or third-party mirror
# XXX - is this still relevant?
# check if the arch is powerpc or sparc and if so, transition
# to ports.ubuntu.com (powerpc got demoted in gutsy, sparc
# in hardy)
if (entry.type == "deb" and
not "ports.ubuntu.com" in entry.uri and
(self.arch == "powerpc" or self.arch == "sparc")):
logging.debug("moving %s source entry to 'ports.ubuntu.com' " % self.arch)
entry.uri = "http://ports.ubuntu.com/ubuntu-ports/"
# gather what components are enabled and are inconsistent
for d in ["%s" % self.toDist,
"%s-updates" % self.toDist,
"%s-security" % self.toDist]:
# create entry if needed, ignore disabled
# entries and deb-src
self.found_components.setdefault(d, set())
if (not entry.disabled and entry.dist == d and
entry.type == "deb"):
for comp in entry.comps:
# only sync components we know about
if not comp in sync_components:
continue
self.found_components[d].add(comp)
else:
# disable anything that is not from a official mirror or a whitelisted third party
if entry.dist == self.fromDist:
entry.dist = self.toDist
disable_comment = " " + _("disabled on upgrade to %s") % self.toDist
if isinstance(entry.comment, bytes):
entry.comment += disable_comment.encode('UTF-8')
else:
entry.comment += disable_comment
entry.disabled = True
self.sources_disabled = True
logging.debug("entry '%s' was disabled (unknown mirror)" % get_string_with_no_auth_from_source_entry(entry))
# if its not a valid mirror and we manually added main, be
# nice and add pockets and components corresponding to what we
# disabled.
if main_was_missing:
if entry.dist in fromDists:
entry.dist = toDists[fromDists.index(entry.dist)]
# gather what components are enabled and are inconsistent
for d in ["%s" % self.toDist,
"%s-updates" % self.toDist,
"%s-security" % self.toDist]:
# create entry if needed, ignore deb-src entries
self.found_components.setdefault(d, set())
if entry.dist == d and entry.type == "deb":
for comp in entry.comps:
# only sync components we know about
if not comp in sync_components:
continue
self.found_components[d].add(comp)
logging.debug("Adding entry: %s %s %s" % (entry.type, entry.dist, entry.comps))
uri = "http://archive.ubuntu.com/ubuntu"
comment = " auto generated by ubuntu-release-upgrader"
self.sources.add(entry.type, uri, entry.dist, entry.comps, comment)
# now go over the list again and check for missing components
# in $dist-updates and $dist-security and add them
for entry in self.sources.list[:]:
# skip all comps that are not relevant (including e.g. "hardy")
if (entry.invalid or entry.disabled or entry.type == "deb-src" or
entry.uri.startswith("cdrom:") or entry.dist == self.toDist):
continue
# now check for "$dist-updates" and "$dist-security" and add any inconsistencies
if entry.dist in self.found_components:
component_diff = self.found_components[self.toDist]-self.found_components[entry.dist]
if component_diff:
logging.info("fixing components inconsistency from '%s'" % get_string_with_no_auth_from_source_entry(entry))
# extend and make sure to keep order
entry.comps.extend(
sorted(component_diff, key=component_ordering_key))
logging.info("to new entry '%s'" % get_string_with_no_auth_from_source_entry(entry))
del self.found_components[entry.dist]
return foundToDist
def updateSourcesList(self):
logging.debug("updateSourcesList()")
self.sources = SourcesList(matcherPath=".")
# backup first!
self.sources.backup(self.sources_backup_ext)
if not self.rewriteSourcesList(mirror_check=True):
logging.error("No valid mirror found")
res = self._view.askYesNoQuestion(_("No valid mirror found"),
_("While scanning your repository "
"information no mirror entry for "
"the upgrade was found. "
"This can happen if you run an internal "
"mirror or if the mirror information is "
"out of date.\n\n"
"Do you want to rewrite your "
"'sources.list' file anyway? If you choose "
"'Yes' here it will update all '%s' to '%s' "
"entries.\n"
"If you select 'No' the upgrade will cancel."
) % (self.fromDist, self.toDist))
if res:
# re-init the sources and try again
self.sources = SourcesList(matcherPath=".")
# its ok if rewriteSourcesList fails here if
# we do not use a network, the sources.list may be empty
if (not self.rewriteSourcesList(mirror_check=False)
and self.useNetwork):
#hm, still nothing useful ...
prim = _("Generate default sources?")
secon = _("After scanning your 'sources.list' no "
"valid entry for '%s' was found.\n\n"
"Should default entries for '%s' be "
"added? If you select 'No', the upgrade "
"will cancel.") % (self.fromDist, self.toDist)
if not self._view.askYesNoQuestion(prim, secon):
self.abort()
# add some defaults here
# FIXME: find mirror here
logging.info("Generated new default sources.list")
uri = "http://archive.ubuntu.com/ubuntu"
comps = ["main","restricted"]
self.sources.add("deb", uri, self.toDist, comps)
self.sources.add("deb", uri, self.toDist+"-updates", comps)
self.sources.add("deb",
"http://security.ubuntu.com/ubuntu/",
self.toDist+"-security", comps)
else:
self.abort()
# now write
self.sources.save()
# re-check if the written self.sources are valid, if not revert and
# bail out
# TODO: check if some main packages are still available or if we
# accidentally shot them, if not, maybe offer to write a standard
# sources.list?
try:
sourceslist = apt_pkg.SourceList()
sourceslist.read_main_list()
except SystemError:
logging.error("Repository information invalid after updating (we broke it!)")
if os.path.exists("/usr/bin/apport-bug"):
self._view.error(_("Repository information invalid"),
_("Upgrading the repository information "
"resulted in a invalid file so a bug "
"reporting process is being started."))
subprocess.Popen(["apport-bug", "ubuntu-release-upgrader-core"])
else:
self._view.error(_("Repository information invalid"),
_("Upgrading the repository information "
"resulted in a invalid file. To report "
"a bug install apport and then execute "
"'apport-bug ubuntu-release-upgrader'."))
logging.error("Missing apport-bug, bug report not "
"autocreated")
return False
if self.sources_disabled:
self._view.information(_("Third party sources disabled"),
_("Some third party entries in your sources.list "
"were disabled. You can re-enable them "
"after the upgrade with the "
"'software-properties' tool or "
"your package manager."
))
return True
def _logChanges(self):
# debugging output
logging.debug("About to apply the following changes")
inst = []
up = []
rm = []
held = []
keep = []
for pkg in self.cache:
if pkg.marked_install: inst.append(pkg.name)
elif pkg.marked_upgrade: up.append(pkg.name)
elif pkg.marked_delete: rm.append(pkg.name)
elif (pkg.is_installed and pkg.is_upgradable): held.append(pkg.name)
elif pkg.is_installed and pkg.marked_keep: keep.append(pkg.name)
logging.debug("Keep at same version: %s" % " ".join(keep))
logging.debug("Upgradable, but held- back: %s" % " ".join(held))
logging.debug("Remove: %s" % " ".join(rm))
logging.debug("Install: %s" % " ".join(inst))
logging.debug("Upgrade: %s" % " ".join(up))
def doPostInitialUpdate(self):
# check if we have packages in ReqReinst state that are not
# downloadable
logging.debug("doPostInitialUpdate")
self.quirks.run("PostInitialUpdate")
if not self.cache:
return False
if len(self.cache.req_reinstall_pkgs) > 0:
logging.warning("packages in reqReinstall state, trying to fix")
self.cache.fix_req_reinst(self._view)
self.openCache()
if len(self.cache.req_reinstall_pkgs) > 0:
reqreinst = self.cache.req_reinstall_pkgs
header = ngettext("Package in inconsistent state",
"Packages in inconsistent state",
len(reqreinst))
summary = ngettext("The package '%s' is in an inconsistent "
"state and needs to be reinstalled, but "
"no archive can be found for it. "
"Please reinstall the package manually "
"or remove it from the system.",
"The packages '%s' are in an inconsistent "
"state and need to be reinstalled, but "
"no archive can be found for them. "
"Please reinstall the packages manually "
"or remove them from the system.",
len(reqreinst)) % ", ".join(reqreinst)
self._view.error(header, summary)
return False
# Log MetaPkgs installed to see if there is more than one.
meta_pkgs = []
for pkg in self.config.getlist("Distro","MetaPkgs"):
if pkg in self.cache and self.cache[pkg].is_installed:
meta_pkgs.append(pkg)
logging.debug("MetaPkgs: %s" % " ".join(sorted(meta_pkgs)))
# FIXME: check out what packages are downloadable etc to
# compare the list after the update again
self.obsolete_pkgs = self.cache._getObsoletesPkgs()
self.foreign_pkgs = self.cache._getForeignPkgs(self.origin, self.fromDist, self.toDist)
if self.serverMode:
self.tasks = self.cache.installedTasks
logging.debug("Foreign: %s" % " ".join(sorted(self.foreign_pkgs)))
logging.debug("Obsolete: %s" % " ".join(sorted(self.obsolete_pkgs)))
return True
def doUpdate(self, showErrors=True, forceRetries=None):
logging.debug("running doUpdate() (showErrors=%s)" % showErrors)
if not self.useNetwork:
logging.debug("doUpdate() will not use the network because self.useNetwork==false")
return True
self.cache._list.read_main_list()
progress = self._view.getAcquireProgress()
# FIXME: also remove all files from the lists partial dir!
currentRetry = 0
if forceRetries is not None:
maxRetries=forceRetries
else:
maxRetries = self.config.getint("Network","MaxRetries")
# LP: #1321959
error_msg = ""
while currentRetry < maxRetries:
try:
self.cache.update(progress)
except (SystemError, IOError) as e:
error_msg = str(e)
logging.error("IOError/SystemError in cache.update(): '%s'. Retrying (currentRetry: %s)" % (e,currentRetry))
currentRetry += 1
continue
# no exception, so all was fine, we are done
return True
logging.error("doUpdate() failed completely")
if showErrors:
self._view.error(_("Error during update"),
_("A problem occurred during the update. "
"This is usually some sort of network "
"problem, please check your network "
"connection and retry."), "%s" % error_msg)
return False
def _checkFreeSpace(self):
" this checks if we have enough free space on /var and /usr"
err_sum = _("Not enough free disk space")
err_msg = _("The upgrade has aborted. "
"The upgrade needs a total of %s free space on disk '%s'. "
"Please free at least an additional %s of disk "
"space on '%s'. %s")
# specific ways to resolve lack of free space
remedy_archivedir = _("Remove temporary packages of former "
"installations using 'sudo apt clean'.")
remedy_boot = _("You can remove old kernels using "
"'sudo apt autoremove' and you could also "
"set COMPRESS=xz in "
"/etc/initramfs-tools/initramfs.conf to "
"reduce the size of your initramfs.")
remedy_root = _("Empty your trash and remove temporary "
"packages of former installations using "
"'sudo apt-get clean'.")
remedy_tmp = _("Reboot to clean up files in /tmp.")
remedy_usr = _("")
# allow override
if self.config.getWithDefault("FreeSpace","SkipCheck",False):
logging.warning("free space check skipped via config override")
return True
# do the check
with_snapshots = self._is_apt_btrfs_snapshot_supported()
try:
self.cache.checkFreeSpace(with_snapshots)
except NotEnoughFreeSpaceError as e:
# ok, showing multiple error dialog sucks from the UI
# perspective, but it means we do not need to break the
# string freeze
archivedir = apt_pkg.config.find_dir("Dir::Cache::archives")
err_long = ""
for req in e.free_space_required_list:
if err_long != "":
err_long += " "
if req.dir == archivedir:
err_long += err_msg % (req.size_total, req.dir,
req.size_needed, req.dir,
remedy_archivedir)
elif req.dir == "/boot":
err_long += err_msg % (req.size_total, req.dir,
req.size_needed, req.dir,
remedy_boot)
elif req.dir == "/":
err_long += err_msg % (req.size_total, req.dir,
req.size_needed, req.dir,
remedy_root)
elif req.dir == "/tmp":
err_long += err_msg % (req.size_total, req.dir,
req.size_needed, req.dir,
remedy_tmp)
elif req.dir == "/usr":
err_long += err_msg % (req.size_total, req.dir,
req.size_needed, req.dir,
remedy_usr)
self._view.error(err_sum, err_long)
return False
return True
def askDistUpgrade(self):
self._view.updateStatus(_("Calculating the changes"))
if not self.cache.distUpgrade(self._view, self.serverMode, self._partialUpgrade):
return False
if self.serverMode:
if not self.cache.installTasks(self.tasks):
return False
# show changes and confirm
changes = self.cache.get_changes()
self._view.processEvents()
# log the changes for debugging
self._logChanges()
self._view.processEvents()
# check if we have enough free space
if not self._checkFreeSpace():
return False
self._view.processEvents()
# get the demotions
self.installed_demotions = self.cache.get_installed_demoted_packages()
if len(self.installed_demotions) > 0:
self.installed_demotions.sort()
logging.debug("demoted: '%s'" % " ".join([x.name for x in self.installed_demotions]))
logging.debug("found components: %s" % self.found_components)
# flush UI
self._view.processEvents()
# ask the user
res = self._view.confirmChanges(_("Do you want to start the upgrade?"),
changes,
self.installed_demotions,
self.cache.required_download)
return res
def _disableAptCronJob(self):
if os.path.exists("/etc/cron.daily/apt"):
#self._aptCronJobPerms = os.stat("/etc/cron.daily/apt")[ST_MODE]
logging.debug("disabling apt cron job (%s)" % oct(self._aptCronJobPerms))
os.chmod("/etc/cron.daily/apt",0o644)
def _enableAptCronJob(self):
if os.path.exists("/etc/cron.daily/apt"):
logging.debug("enabling apt cron job")
os.chmod("/etc/cron.daily/apt", self._aptCronJobPerms)
def doDistUpgradeFetching(self):
# ensure that no apt cleanup is run during the download/install
self._disableAptCronJob()
# get the upgrade
currentRetry = 0
fprogress = self._view.getAcquireProgress()
#iprogress = self._view.getInstallProgress(self.cache)
# start slideshow
url = self.config.getWithDefault("Distro","SlideshowUrl",None)
if url:
try:
lang = locale.getdefaultlocale()[0].split('_')[0]
except:
logging.exception("getdefaultlocale")
lang = "en"
self._view.getHtmlView().open("%s#locale=%s" % (url, lang))
# retry the fetching in case of errors
maxRetries = self.config.getint("Network","MaxRetries")
# FIXME: we get errors like
# "I wasn't able to locate file for the %s package"
# here sometimes. its unclear why and not reproducible, the
# current theory is that for some reason the file is not
# considered trusted at the moment
# pkgAcquireArchive::QueueNext() runs debReleaseIndex::IsTrused()
# (the later just checks for the existence of the .gpg file)
# OR
# the fact that we get a pm and fetcher here confuses something
# in libapt?
# POSSIBLE workaround: keep the list-dir locked so that
# no apt-get update can run outside from the release
# upgrader
user_canceled = False
# LP: #1102593 - In Python 3, the targets of except clauses get `del`d
# from the current namespace after the exception is handled, so we
# must assign it to a different variable in order to use it after
# the while loop.
exception = None
while currentRetry < maxRetries:
try:
pm = apt_pkg.PackageManager(self.cache._depcache)
fetcher = apt_pkg.Acquire(fprogress)
self.cache._fetch_archives(fetcher, pm)
except apt.cache.FetchCancelledException as e:
logging.info("user canceled")
user_canceled = True
exception = e
break
except IOError as e:
# fetch failed, will be retried
logging.error("IOError in cache.commit(): '%s'. Retrying (currentTry: %s)" % (e,currentRetry))
currentRetry += 1
exception = e
continue
return True
# maximum fetch-retries reached without a successful commit
if user_canceled:
self._view.information(_("Upgrade canceled"),
_("The upgrade will cancel now and the "
"original system state will be restored. "
"You can resume the upgrade at a later "
"time."))
else:
logging.error("giving up on fetching after maximum retries")
self._view.error(_("Could not download the upgrades"),
_("The upgrade has aborted. Please check your "
"Internet connection or "
"installation media and try again. All files "
"downloaded so far have been kept."),
"%s" % exception)
# abort here because we want our sources.list back
self._enableAptCronJob()
self.abort()
def _is_apt_btrfs_snapshot_supported(self):
""" check if apt-btrfs-snapshot is usable """
try:
import apt_btrfs_snapshot
except ImportError:
return
try:
apt_btrfs = apt_btrfs_snapshot.AptBtrfsSnapshot()
res = apt_btrfs.snapshots_supported()
except:
logging.exception("failed to check btrfs support")
return False
logging.debug("apt btrfs snapshots supported: %s" % res)
return res
def _maybe_create_apt_btrfs_snapshot(self):
""" create btrfs snapshot (if btrfs layout is there) """
if not self._is_apt_btrfs_snapshot_supported():
return
import apt_btrfs_snapshot
apt_btrfs = apt_btrfs_snapshot.AptBtrfsSnapshot()
prefix = "release-upgrade-%s-" % self.toDist
res = apt_btrfs.create_btrfs_root_snapshot(prefix)
logging.info("creating snapshot '%s' (success=%s)" % (prefix, res))
def doDistUpgrade(self):
# add debug code only here
#apt_pkg.config.set("Debug::pkgDpkgPM", "1")
#apt_pkg.config.set("Debug::pkgOrderList", "1")
#apt_pkg.config.set("Debug::pkgPackageManager", "1")
# get the upgrade
currentRetry = 0
fprogress = self._view.getAcquireProgress()
iprogress = self._view.getInstallProgress(self.cache)
# retry the fetching in case of errors
maxRetries = self.config.getint("Network","MaxRetries")
if not self._partialUpgrade:
self.quirks.run("StartUpgrade")
# FIXME: take this into account for diskspace calculation
self._maybe_create_apt_btrfs_snapshot()
res = False
while currentRetry < maxRetries:
try:
res = self.cache.commit(fprogress,iprogress)
logging.debug("cache.commit() returned %s" % res)
except SystemError as e:
logging.error("SystemError from cache.commit(): %s" % e)
# if its a ordering bug we can cleanly revert to
# the previous release, no packages have been installed
# yet (LP: #328655, #356781)
if os.path.exists("/var/run/ubuntu-release-upgrader-apt-exception"):
with open("/var/run/ubuntu-release-upgrader-apt-exception") as f:
e = f.read()
logging.error("found exception: '%s'" % e)
# if its a ordering bug we can cleanly revert but we need to write
# a marker for the parent process to know its this kind of error
pre_configure_errors = [
"E:Internal Error, Could not perform immediate configuration",
"E:Couldn't configure pre-depend "]
for preconf_error in pre_configure_errors:
if str(e).startswith(preconf_error):
logging.debug("detected preconfigure error, restorting state")
self._enableAptCronJob()
# FIXME: strings are not good, but we are in string freeze
# currently
msg = _("Error during commit")
msg += "\n'%s'\n" % str(e)
msg += _("Restoring original system state")
self._view.error(_("Could not install the upgrades"), msg)
# abort() exits cleanly
self.abort()
# invoke the frontend now and show a error message
msg = _("The upgrade has aborted. Your system "
"could be in an unusable state. A recovery "
"will run now (dpkg --configure -a).")
if not self._partialUpgrade:
if not run_apport():
msg += _("\n\nPlease report this bug in a browser at "
"http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug "
"and attach the files in /var/log/dist-upgrade/ "
"to the bug report.\n"
"%s" % e)
self._view.error(_("Could not install the upgrades"), msg)
# installing the packages failed, can't be retried
cmd = ["/usr/bin/dpkg","--configure","-a"]
if os.environ.get("DEBIAN_FRONTEND") == "noninteractive":
cmd.append("--force-confold")
self._view.getTerminal().call(cmd)
self._enableAptCronJob()
return False
except IOError as e:
# fetch failed, will be retried
logging.error("IOError in cache.commit(): '%s'. Retrying (currentTry: %s)" % (e,currentRetry))
currentRetry += 1
continue
except OSError as e:
logging.exception("cache.commit()")
# deal gracefully with:
# OSError: [Errno 12] Cannot allocate memory
if e.errno == 12:
self._enableAptCronJob()
msg = _("Error during commit")
msg += "\n'%s'\n" % str(e)
msg += _("Restoring original system state")
self._view.error(_("Could not install the upgrades"), msg)
# abort() exits cleanly
self.abort()
# no exception, so all was fine, we are done
self._enableAptCronJob()
return True
# maximum fetch-retries reached without a successful commit
logging.error("giving up on fetching after maximum retries")
self._view.error(_("Could not download the upgrades"),
_("The upgrade has aborted. Please check your "\
"Internet connection or "\
"installation media and try again. "),
"%s" % e)
# abort here because we want our sources.list back
self.abort()
def doPostUpgrade(self):
# reopen cache
self.openCache()
# run the quirks handler that does does like things adding
# missing groups or similar work arounds, only do it on real
# upgrades
self.quirks.run("PostUpgrade")
# check out what packages are cruft now
# use self.{foreign,obsolete}_pkgs here and see what changed
now_obsolete = self.cache._getObsoletesPkgs()
now_foreign = self.cache._getForeignPkgs(self.origin, self.fromDist, self.toDist)
logging.debug("Obsolete: %s" % " ".join(sorted(now_obsolete)))
logging.debug("Foreign: %s" % " ".join(sorted(now_foreign)))
# now sanity check - if a base meta package is in the obsolete list now, that means
# that something went wrong (see #335154) badly with the network. this should never happen, but it did happen
# at least once so we add extra paranoia here
for pkg in self.config.getlist("Distro","BaseMetaPkgs"):
if pkg in now_obsolete:
logging.error("the BaseMetaPkg '%s' is in the obsolete list, something is wrong, ignoring the obsoletes" % pkg)
now_obsolete = set()
break
# check if we actually want obsolete removal
if not self.config.getWithDefault("Distro","RemoveObsoletes", True):
logging.debug("Skipping obsolete Removal")
return True
# now get the meta-pkg specific obsoletes and purges
for pkg in self.config.getlist("Distro","MetaPkgs"):
if pkg in self.cache and self.cache[pkg].is_installed:
self.forced_obsoletes.extend(self.config.getlist(pkg,"ForcedObsoletes"))
# now add the obsolete kernels to the forced obsoletes
self.forced_obsoletes.extend(self.cache.identifyObsoleteKernels())
logging.debug("forced_obsoletes: %s" % self.forced_obsoletes)
# mark packages that are now obsolete (and where not obsolete
# before) to be deleted. make sure to not delete any foreign
# (that is, not from ubuntu) packages
if self.useNetwork:
# we can only do the obsoletes calculation here if we use a
# network. otherwise after rewriting the sources.list everything
# that is not on the CD becomes obsolete (not-downloadable)
remove_candidates = now_obsolete - self.obsolete_pkgs
else:
# initial remove candidates when no network is used should
# be the demotions to make sure we don't leave potential
# unsupported software
remove_candidates = set([p.name for p in self.installed_demotions])
remove_candidates |= set(self.forced_obsoletes)
# now go for the unused dependencies
unused_dependencies = self.cache._getUnusedDependencies()
logging.debug("Unused dependencies: %s" %" ".join(unused_dependencies))
remove_candidates |= set(unused_dependencies)
# see if we actually have to do anything here
if not self.config.getWithDefault("Distro","RemoveObsoletes", True):
logging.debug("Skipping RemoveObsoletes as stated in the config")
remove_candidates = set()
logging.debug("remove_candidates: '%s'" % remove_candidates)
logging.debug("Start checking for obsolete pkgs")
progress = self._view.getOpCacheProgress()
for (i, pkgname) in enumerate(remove_candidates):
progress.update((i/float(len(remove_candidates)))*100.0)
if pkgname not in self.foreign_pkgs:
self._view.processEvents()
if not self.cache.tryMarkObsoleteForRemoval(pkgname, remove_candidates, self.foreign_pkgs):
logging.debug("'%s' scheduled for remove but not safe to remove, skipping", pkgname)
logging.debug("Finish checking for obsolete pkgs")
progress.done()
# get changes
changes = self.cache.get_changes()
logging.debug("The following packages are marked for removal: %s" % " ".join([pkg.name for pkg in changes]))
summary = _("Remove obsolete packages?")
actions = [_("_Keep"), _("_Remove")]
# FIXME Add an explanation about what obsolete packages are
#explanation = _("")
if (len(changes) > 0 and
self._view.confirmChanges(summary, changes, [], 0, actions, False)):
fprogress = self._view.getAcquireProgress()
iprogress = self._view.getInstallProgress(self.cache)
try:
self.cache.commit(fprogress,iprogress)
except (SystemError, IOError) as e:
logging.error("cache.commit() in doPostUpgrade() failed: %s" % e)
self._view.error(_("Error during commit"),
_("A problem occurred during the clean-up. "
"Please see the below message for more "
"information. "),
"%s" % e)
# run stuff after cleanup
self.quirks.run("PostCleanup")
# run the post upgrade scripts that can do fixup like xorg.conf
# fixes etc - only do on real upgrades
if not self._partialUpgrade:
self.runPostInstallScripts()
return True
def runPostInstallScripts(self):
"""
scripts that are run in any case after the distupgrade finished
whether or not it was successful
Cache lock is released during script runs in the event that the
PostInstallScripts require apt or dpkg changes.
"""
if self.cache:
self.cache.release_lock()
self.cache.unlock_lists_dir()
# now run the post-upgrade fixup scripts (if any)
for script in self.config.getlist("Distro","PostInstallScripts"):
if not os.path.exists(script):
logging.warning("PostInstallScript: '%s' not found" % script)
continue
logging.debug("Running PostInstallScript: '%s'" % script)
try:
# work around kde tmpfile problem where it eats permissions
check_and_fix_xbit(script)
self._view.getTerminal().call([script], hidden=True)
except Exception as e:
logging.error("got error from PostInstallScript %s (%s)" % (script, e))
if self.cache:
self.cache.get_lock()
def abort(self):
""" abort the upgrade, cleanup (as much as possible) """
logging.debug("abort called")
if hasattr(self, "sources"):
self.sources.restore_backup(self.sources_backup_ext)
if hasattr(self, "aptcdrom"):
self.aptcdrom.restore_backup(self.sources_backup_ext)
# generate a new cache
self._view.updateStatus(_("Restoring original system state"))
self._view.abort()
self.openCache()
sys.exit(1)
def _checkDep(self, depstr):
" check if a given depends can be satisfied "
for or_group in apt_pkg.parse_depends(depstr):
logging.debug("checking: '%s' " % or_group)
for dep in or_group:
depname = dep[0]
ver = dep[1]
oper = dep[2]
if depname not in self.cache:
logging.error("_checkDep: '%s' not in cache" % depname)
return False
inst = self.cache[depname]
instver = getattr(inst.installed, "version", None)
if (instver != None and
apt_pkg.check_dep(instver,oper,ver) == True):
return True
logging.error("depends '%s' is not satisfied" % depstr)
return False
def checkViewDepends(self):
" check if depends are satisfied "
logging.debug("checkViewDepends()")
res = True
# now check if anything from $foo-updates is required
depends = self.config.getlist("View","Depends")
depends.extend(self.config.getlist(self._view.__class__.__name__,
"Depends"))
for dep in depends:
logging.debug("depends: '%s'", dep)
res &= self._checkDep(dep)
if not res:
# FIXME: instead of error out, fetch and install it
# here
self._view.error(_("Required depends is not installed"),
_("The required dependency '%s' is not "
"installed. " % dep))
sys.exit(1)
return res
def _verifyBackports(self):
# run update (but ignore errors in case the countrymirror
# substitution goes wrong, real errors will be caught later
# when the cache is searched for the backport packages)
backportslist = self.config.getlist("PreRequists","Packages")
i=0
noCache = apt_pkg.config.find("Acquire::http::No-Cache","false")
maxRetries = self.config.getint("Network","MaxRetries")
while i < maxRetries:
self.doUpdate(showErrors=False)
self.openCache()
for pkgname in backportslist:
if pkgname not in self.cache:
logging.error("Can not find backport '%s'" % pkgname)
raise NoBackportsFoundException(pkgname)
if self._allBackportsAuthenticated(backportslist):
break
# FIXME: move this to some more generic place
logging.debug("setting a cache control header to turn off caching temporarily")
apt_pkg.config.set("Acquire::http::No-Cache","true")
i += 1
if i == maxRetries:
logging.error("pre-requists item is NOT trusted, giving up")
return False
apt_pkg.config.set("Acquire::http::No-Cache",noCache)
return True
def _allBackportsAuthenticated(self, backportslist):
# check if the user overwrote the check
if apt_pkg.config.find_b("APT::Get::AllowUnauthenticated",False) == True:
logging.warning("skip authentication check because of APT::Get::AllowUnauthenticated==true")
return True
try:
b = self.config.getboolean("Distro","AllowUnauthenticated")
if b:
return True
except NoOptionError:
pass
for pkgname in backportslist:
pkg = self.cache[pkgname]
if not pkg.candidate:
return False
for cand in pkg.candidate.origins:
if cand.trusted:
break
else:
return False
return True
def isMirror(self, uri):
""" check if uri is a known mirror """
# deal with username:password in a netloc
raw_uri = uri.rstrip("/")
scheme, netloc, path, query, fragment = urlsplit(raw_uri)
if "@" in netloc:
netloc = netloc.split("@")[1]
# construct new mirror url without the username/pw
uri = "%s://%s%s" % (scheme, netloc, path)
for mirror in self.valid_mirrors:
mirror = mirror.rstrip("/")
if is_mirror(mirror, uri):
return True
# deal with mirrors like
# deb http://localhost:9977/security.ubuntu.com/ubuntu intrepid-security main restricted
# both apt-debtorrent and apt-cacher use this (LP: #365537)
mirror_host_part = mirror.split("//")[1]
if uri.endswith(mirror_host_part):
logging.debug("found apt-cacher/apt-torrent style uri %s" % uri)
return True
return False
def isThirdPartyMirror(self, uri):
" check if uri is a whitelisted third-party mirror "
uri = uri.rstrip("/")
for mirror in self.valid_3p_mirrors:
mirror = mirror.rstrip("/")
if is_mirror(mirror, uri):
return True
return False
def _getPreReqMirrorLines(self, dumb=False):
" get sources.list snippet lines for the current mirror "
lines = ""
sources = SourcesList(matcherPath=".")
for entry in sources.list:
if entry.invalid or entry.disabled:
continue
if (entry.type == "deb" and
entry.disabled == False and
self.isMirror(entry.uri) and
"main" in entry.comps and
"%s-updates" % self.fromDist in entry.dist and
not entry.uri.startswith("http://security.ubuntu.com") and
not entry.uri.startswith("http://archive.ubuntu.com") ):
new_line = "deb %s %s-updates main\n" % (entry.uri, self.fromDist)
if not new_line in lines:
lines += new_line
# FIXME: do we really need "dumb" mode?
#if (dumb and entry.type == "deb" and
# "main" in entry.comps):
# lines += "deb %s %s-proposed main\n" % (entry.uri, self.fromDist)
return lines
def _addPreRequistsSourcesList(self, template, out, dumb=False):
" add prerequists based on template into the path outfile "
# go over the sources.list and try to find a valid mirror
# that we can use to add the backports dir
logging.debug("writing prerequists sources.list at: '%s' " % out)
mirrorlines = self._getPreReqMirrorLines(dumb)
with open(out, "w") as outfile, open(template) as infile:
for line in infile:
template = Template(line)
outline = template.safe_substitute(mirror=mirrorlines)
outfile.write(outline)
logging.debug("adding '%s' prerequists" % outline)
return True
def getRequiredBackports(self):
" download the backports specified in DistUpgrade.cfg "
logging.debug("getRequiredBackports()")
res = True
backportsdir = os.path.join(os.getcwd(),"backports")
if not os.path.exists(backportsdir):
os.mkdir(backportsdir)
backportslist = self.config.getlist("PreRequists","Packages")
# FIXME: this needs to be ported
# if we have them on the CD we are fine
if self.aptcdrom and not self.useNetwork:
logging.debug("Searching for pre-requists on CDROM")
p = os.path.join(self.aptcdrom.cdrompath,
"dists/stable/main/dist-upgrader/binary-%s/" % apt_pkg.config.find("APT::Architecture"))
found_pkgs = set()
for deb in glob.glob(p+"*_*.deb"):
logging.debug("found pre-req '%s' to '%s'" % (deb, backportsdir))
found_pkgs.add(os.path.basename(deb).split("_")[0])
# now check if we got all backports on the CD
if not set(backportslist).issubset(found_pkgs):
logging.error("Expected backports: '%s' but got '%s'" % (set(backportslist), found_pkgs))
return False
# now install them
self.cache.release_lock()
p = subprocess.Popen(
["/usr/bin/dpkg", "-i", ] + glob.glob(p+"*_*.deb"),
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
universal_newlines=True)
res = None
while res is None:
res = p.poll()
self._view.pulseProgress()
time.sleep(0.02)
self._view.pulseProgress(finished=True)
self.cache.get_lock()
logging.info("installing backport debs exit code '%s'" % res)
logging.debug("dpkg output:\n%s" % p.communicate()[0])
if res != 0:
return False
# and re-start itself when it done
return self.setupRequiredBackports()
# we support PreRequists/SourcesList-$arch sections here too
#
# logic for mirror finding works list this:
# - use the mirror template from the config, then: [done]
#
# - try to find known mirror (isMirror) and prepend it [done]
# - archive.ubuntu.com is always a fallback at the end [done]
#
# see if we find backports with that
# - if not, try guessing based on URI, Trust and Dist [done]
# in existing sources.list (internal mirror with no
# outside connection maybe)
#
# make sure to remove file on cancel
# FIXME: use the DistUpgradeFetcherCore logic
# in mirror_from_sources_list() here
# (and factor that code out into a helper)
conf_option = "SourcesList"
if self.config.has_option("PreRequists",conf_option+"-%s" % self.arch):
conf_option = conf_option + "-%s" % self.arch
prereq_template = self.config.get("PreRequists",conf_option)
if not os.path.exists(prereq_template):
logging.error("sourceslist not found '%s'" % prereq_template)
return False
outpath = os.path.join(apt_pkg.config.find_dir("Dir::Etc::sourceparts"), prereq_template)
outfile = os.path.join(apt_pkg.config.find_dir("Dir::Etc::sourceparts"), prereq_template)
self._addPreRequistsSourcesList(prereq_template, outfile)
try:
self._verifyBackports()
except NoBackportsFoundException as e:
self._addPreRequistsSourcesList(prereq_template, outfile, dumb=True)
try:
self._verifyBackports()
except NoBackportsFoundException as e:
logging.warning("no backport for '%s' found" % e)
return False
# FIXME: sanity check the origin (just for safety)
for pkgname in backportslist:
pkg = self.cache[pkgname]
# look for the right version (backport)
ver = self.cache._depcache.get_candidate_ver(pkg._pkg)
if not ver:
logging.error("No candidate for '%s'" % pkgname)
os.unlink(outpath)
return False
if ver.file_list == None:
logging.error("No ver.file_list for '%s'" % pkgname)
os.unlink(outpath)
return False
logging.debug("marking '%s' for install" % pkgname)
# mark install
pkg.mark_install(auto_inst=False, auto_fix=False)
# now get it
res = False
try:
res = self.cache.commit(self._view.getAcquireProgress(),
self._view.getInstallProgress(self.cache))
except IOError as e:
logging.error("fetch_archives returned '%s'" % e)
res = False
except SystemError as e:
logging.error("install_archives returned '%s'" % e)
res = False
if res == False:
logging.warning("_fetch_archives for backports returned False")
# all backports done, remove the pre-requirests.list file again
try:
os.unlink(outfile)
except Exception as e:
logging.error("failed to unlink pre-requists file: '%s'" % e)
return self.setupRequiredBackports()
# used by both cdrom/http fetcher
def setupRequiredBackports(self):
# ensure that the new release upgrader uses the latest python-apt
# from the backport path
os.environ["PYTHONPATH"] = "/usr/lib/release-upgrader-python-apt"
# copy log so that it gets not overwritten
logging.shutdown()
shutil.copy("/var/log/dist-upgrade/main.log",
"/var/log/dist-upgrade/main_pre_req.log")
# now exec self again
args = sys.argv + ["--have-prerequists"]
if self.useNetwork:
args.append("--with-network")
else:
args.append("--without-network")
logging.info("restarting upgrader")
#print("restarting upgrader to make use of the backports")
# work around kde being clever and removing the x bit
check_and_fix_xbit(sys.argv[0])
os.execve(sys.argv[0],args, os.environ)
# this is the core
def fullUpgrade(self):
# sanity check (check for ubuntu-desktop, brokenCache etc)
self._view.updateStatus(_("Checking package manager"))
self._view.setStep(STEP_PREPARE)
if not self.prepare():
logging.error("self.prepared() failed")
if os.path.exists("/usr/bin/apport-bug"):
self._view.error(_("Preparing the upgrade failed"),
_("Preparing the system for the upgrade "
"failed so a bug reporting process is "
"being started."))
subprocess.Popen(["apport-bug", "ubuntu-release-upgrader-core"])
else:
self._view.error(_("Preparing the upgrade failed"),
_("Preparing the system for the upgrade "
"failed. To report a bug install apport "
"and then execute 'apport-bug "
"ubuntu-release-upgrader'."))
logging.error("Missing apport-bug, bug report not "
"autocreated")
sys.exit(1)
# mvo: commented out for now, see #54234, this needs to be
# refactored to use a arch=any tarball
if (self.config.has_section("PreRequists") and
self.options and
self.options.havePrerequists == False):
logging.debug("need backports")
# get backported packages (if needed)
if not self.getRequiredBackports():
if os.path.exists("/usr/bin/apport-bug"):
self._view.error(_("Getting upgrade prerequisites failed"),
_("The system was unable to get the "
"prerequisites for the upgrade. "
"The upgrade will abort now and restore "
"the original system state.\n"
"\n"
"Additionally, a bug reporting process is "
"being started."))
subprocess.Popen(["apport-bug", "ubuntu-release-upgrader-core"])
else:
self._view.error(_("Getting upgrade prerequisites failed"),
_("The system was unable to get the "
"prerequisites for the upgrade. "
"The upgrade will abort now and restore "
"the original system state.\n"
"\n"
"To report a bug install apport and "
"then execute 'apport-bug "
"ubuntu-release-upgrader'."))
logging.error("Missing apport-bug, bug report not "
"autocreated")
self.abort()
# run a "apt-get update" now, its ok to ignore errors,
# because
# a) we disable any third party sources later
# b) we check if we have valid ubuntu sources later
# after we rewrite the sources.list and do a
# apt-get update there too
# because the (unmodified) sources.list of the user
# may contain bad/unreachable entries we run only
# with a single retry
self.doUpdate(showErrors=False, forceRetries=1)
self.openCache()
# do pre-upgrade stuff (calc list of obsolete pkgs etc)
if not self.doPostInitialUpdate():
self.abort()
# update sources.list
self._view.setStep(STEP_MODIFY_SOURCES)
self._view.updateStatus(_("Updating repository information"))
if not self.updateSourcesList():
self.abort()
# add cdrom (if we have one)
if (self.aptcdrom and
not self.aptcdrom.add(self.sources_backup_ext)):
self._view.error(_("Failed to add the cdrom"),
_("Sorry, adding the cdrom was not successful."))
sys.exit(1)
# then update the package index files
if not self.doUpdate():
self.abort()
# then open the cache (again)
self._view.updateStatus(_("Checking package manager"))
# if something fails here (e.g. locking the cache) we need to
# restore the system state (LP: #1052605)
self.openCache(restore_sources_list_on_fail=True)
# re-check server mode because we got new packages (it may happen
# that the system had no sources.list entries and therefore no
# desktop file information)
self.serverMode = self.cache.need_server_mode()
# do it here as we need to know if we are in server or client mode
self.quirks.ensure_recommends_are_installed_on_desktops()
# now check if we still have some key packages available/downloadable
# after the update - if not something went seriously wrong
# (this happend e.g. during the intrepid->jaunty upgrade for some
# users when de.archive.ubuntu.com was overloaded)
for pkg in self.config.getlist("Distro","BaseMetaPkgs"):
if (pkg not in self.cache or
not self.cache.anyVersionDownloadable(self.cache[pkg])):
# FIXME: we could offer to add default source entries here,
# but we need to be careful to not duplicate them
# (i.e. the error here could be something else than
# missing sources entries but network errors etc)
logging.error("No '%s' available/downloadable after sources.list rewrite+update" % pkg)
if pkg not in self.cache:
logging.error("'%s' was not in the cache" % pkg)
if not self.cache.anyVersionDownloadable(self.cache[pkg]):
logging.error("'%s' was not downloadable" % pkg)
self._view.error(_("Invalid package information"),
_("After updating your package "
"information, the essential package '%s' "
"could not be located. This may be "
"because you have no official mirrors "
"listed in your software sources, or "
"because of excessive load on the mirror "
"you are using. See /etc/apt/sources.list "
"for the current list of configured "
"software sources."
"\n"
"In the case of an overloaded mirror, you "
"may want to try the upgrade again later.")
% pkg)
if os.path.exists("/usr/bin/apport-bug"):
subprocess.Popen(["apport-bug", "ubuntu-release-upgrader-core"])
else:
logging.error("Missing apport-bug, bug report not "
"autocreated")
self.abort()
# calc the dist-upgrade and see if the removals are ok/expected
# do the dist-upgrade
self._view.updateStatus(_("Calculating the changes"))
if not self.askDistUpgrade():
self.abort()
# fetch the stuff
self._view.setStep(STEP_FETCH)
self._view.updateStatus(_("Fetching"))
if not self.doDistUpgradeFetching():
self.abort()
# now do the upgrade
self._view.setStep(STEP_INSTALL)
self._view.updateStatus(_("Upgrading"))
if not self.doDistUpgrade():
# run the post install scripts (for stuff like UUID conversion)
self.runPostInstallScripts()
# don't abort here, because it would restore the sources.list
self._view.information(_("Upgrade complete"),
_("The upgrade has completed but there "
"were errors during the upgrade "
"process."))
sys.exit(1)
# do post-upgrade stuff
self._view.setStep(STEP_CLEANUP)
self._view.updateStatus(_("Searching for obsolete software"))
self.doPostUpgrade()
# comment out cdrom source
if self.aptcdrom:
self.aptcdrom.comment_out_cdrom_entry()
# remove upgrade-available notice
if os.path.exists("/var/lib/ubuntu-release-upgrader/release-upgrade-available"):
os.unlink("/var/lib/ubuntu-release-upgrader/release-upgrade-available")
# done, ask for reboot
self._view.setStep(STEP_REBOOT)
self._view.updateStatus(_("System upgrade is complete."))
# FIXME should we look into /var/run/reboot-required here?
if (not inside_chroot() and
self._view.confirmRestart()):
subprocess.Popen("/sbin/reboot")
sys.exit(0)
return True
def run(self):
self._view.processEvents()
return self.fullUpgrade()
def doPartialUpgrade(self):
" partial upgrade mode, useful for repairing "
self._view.setStep(STEP_PREPARE)
self._view.hideStep(STEP_MODIFY_SOURCES)
self._view.hideStep(STEP_REBOOT)
self._partialUpgrade = True
self.prepare()
if not self.doPostInitialUpdate():
return False
if not self.askDistUpgrade():
return False
self._view.setStep(STEP_FETCH)
self._view.updateStatus(_("Fetching"))
if not self.doDistUpgradeFetching():
return False
self._view.setStep(STEP_INSTALL)
self._view.updateStatus(_("Upgrading"))
if not self.doDistUpgrade():
self._view.information(_("Upgrade complete"),
_("The upgrade has completed but there "
"were errors during the upgrade "
"process."))
return False
self._view.setStep(STEP_CLEANUP)
if not self.doPostUpgrade():
self._view.information(_("Upgrade complete"),
_("The upgrade has completed but there "
"were errors during the upgrade "
"process."))
return False
if os.path.exists(REBOOT_REQUIRED_FILE):
# we can not talk to session management here, we run as root
if self._view.confirmRestart():
subprocess.Popen("/sbin/reboot")
else:
self._view.information(_("Upgrade complete"),
_("The partial upgrade was completed."))
return True
if __name__ == "__main__":
from .DistUpgradeViewText import DistUpgradeViewText
logging.basicConfig(level=logging.DEBUG)
v = DistUpgradeViewText()
dc = DistUpgradeController(v)
#dc.openCache()
dc._disableAptCronJob()
dc._enableAptCronJob()
#dc._addRelatimeToFstab()
#dc.prepare()
#dc.askDistUpgrade()
#dc._checkFreeSpace()
#dc._rewriteFstab()
#dc._checkAdminGroup()
#dc._rewriteAptPeriodic(2)
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