name : DistUpgradeQuirks.py # DistUpgradeQuirks.py # # Copyright (c) 2004-2010 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 atexit import distro_info import glob import logging import os import pwd import re import hashlib import subprocess import pathlib from subprocess import PIPE, Popen from .utils import get_arch from .DistUpgradeGettext import gettext as _ class DistUpgradeQuirks(object): """ This class collects the various quirks handlers that can be hooked into to fix/work around issues that the individual releases have """ def __init__(self, controller, config): self.controller = controller self._view = controller._view self.config = config self.uname = Popen(["uname", "-r"], stdout=PIPE, universal_newlines=True).communicate()[0].strip() self.arch = get_arch() self.extra_snap_space = 0 self._poke = None self._snapstore_reachable = False self._snap_list = None self._from_version = None self._to_version = None self._did_change_font = False # the quirk function have the name: # $Name (e.g. PostUpgrade) # $todist$Name (e.g. intrepidPostUpgrade) # $from_$fromdist$Name (e.g. from_dapperPostUpgrade) def run(self, quirksName): """ Run the specific quirks handler, the follow handlers are supported: - PreCacheOpen: run *before* the apt cache is opened the first time to set options that affect the cache - PostInitialUpdate: run *before* the sources.list is rewritten but after an initial apt-get update - PreDistUpgradeCache: run *right before* the dist-upgrade is calculated in the cache - PostDistUpgradeCache: run *after* the dist-upgrade was calculated in the cache - StartUpgrade: before the first package gets installed (but the download is finished) - PostUpgrade: run *after* the upgrade is finished successfully and packages got installed - PostCleanup: run *after* the cleanup (orphaned etc) is finished """ # we do not run any quirks in partialUpgrade mode if self.controller._partialUpgrade: logging.info("not running quirks in partialUpgrade mode") return to_release = self.config.get("Sources", "To") from_release = self.config.get("Sources", "From") # run the handler that is common to all dists funcname = "%s" % quirksName func = getattr(self, funcname, None) if func is not None: logging.debug("quirks: running %s" % funcname) func() # run the quirksHandler to-dist funcname = "%s%s" % (to_release, quirksName) func = getattr(self, funcname, None) if func is not None: logging.debug("quirks: running %s" % funcname) func() # now run the quirksHandler from_${FROM-DIST}Quirks funcname = "from_%s%s" % (from_release, quirksName) func = getattr(self, funcname, None) if func is not None: logging.debug("quirks: running %s" % funcname) func() # individual quirks handler that run *before* the cache is opened def PreCacheOpen(self): """ run before the apt cache is opened the first time """ logging.debug("running Quirks.PreCacheOpen") self._add_apport_ignore_list() # individual quirks handler that run *after* the cache is opened def noblePostInitialUpdate(self): # PreCacheOpen would be better but controller.abort fails terribly """ run after the apt cache is opened the first time """ logging.debug("running Quirks.noblePostInitialUpdate") self._get_from_and_to_version() self._test_and_fail_on_i386() self._test_and_fail_on_aufs() self._test_and_fail_on_power8() self._test_and_fail_on_armhf_raspi() self._test_and_fail_on_tpm_fde() cache = self.controller.cache self._test_and_warn_if_ros_installed(cache) self._maybe_prevent_flatpak_auto_removal() if 'snapd' not in cache: logging.debug("package required for Quirk not in cache") return if cache['snapd'].is_installed and \ (os.path.exists('/run/snapd.socket') or os.path.exists('/run/snapd-snap.socket')): self._checkStoreConnectivity() # If the snap store is accessible, at the same time calculate the # extra size needed by to-be-installed snaps. This also prepares # the snaps-to-install list for the actual upgrade. if self._snapstore_reachable: self._calculateSnapSizeRequirements() def noblePostUpgrade(self): logging.debug("running Quirks.noblePostUpgrade") cache = self.controller.cache if 'snapd' not in cache: logging.debug("package required for Quirk not in cache") return if cache['snapd'].is_installed and \ self._snap_list: self._replaceDebsAndSnaps() if 'ubuntu-desktop-raspi' in cache: if cache['ubuntu-desktop-raspi'].is_installed: self._replace_fkms_overlay() if 'ubuntu-server-raspi' in cache: if cache['ubuntu-server-raspi'].is_installed: self._add_kms_overlay() if 'linux-firmware-raspi2' in cache: if cache['linux-firmware-raspi2'].is_installed: self._remove_uboot_on_rpi() # individual quirks handler when the dpkg run is finished --------- def PostCleanup(self): " run after cleanup " logging.debug("running Quirks.PostCleanup") self._remove_apport_ignore_list() # run right before the first packages get installed def StartUpgrade(self): logging.debug("running Quirks.StartUpgrade") self._applyPatches() self._removeOldApportCrashes() self._killUpdateNotifier() self._killKBluetooth() self._pokeScreensaver() self._stopDocvertConverter() self._set_generic_font() # individual quirks handler that run *right before* the dist-upgrade # is calculated in the cache def PreDistUpgradeCache(self): """ run right before calculating the dist-upgrade """ logging.debug("running Quirks.PreDistUpgradeCache") # self._install_python_is_python2() self._maybe_remove_gpg_wks_server() self._install_t64_replacement_packages() self._handle_ufw_breaks() # individual quirks handler that run *after* the dist-upgrade was # calculated in the cache def PostDistUpgradeCache(self): """ run after calculating the dist-upgrade """ logging.debug("running Quirks.PostDistUpgradeCache") self._install_linux_metapackage() # helpers def _get_pci_ids(self): """ return a set of pci ids of the system (using lspci -n) """ lspci = set() try: p = subprocess.Popen(["lspci", "-n"], stdout=subprocess.PIPE, universal_newlines=True) except OSError: return lspci for line in p.communicate()[0].split("\n"): if line: lspci.add(line.split()[2]) return lspci def _get_from_and_to_version(self): di = distro_info.UbuntuDistroInfo() try: self._from_version = \ di.version('%s' % self.controller.fromDist).split()[0] self._to_version = \ di.version('%s' % self.controller.toDist).split()[0] # Ubuntu 18.04's python3-distro-info does not have version except AttributeError: self._from_version = next( (r.version for r in di.get_all("object") if r.series == self.controller.fromDist), self.controller.fromDist).split()[0] self._to_version = next( (r.version for r in di.get_all("object") if r.series == self.controller.toDist), self.controller.toDist).split()[0] def _test_and_warn_for_unity_3d_support(self): UNITY_SUPPORT_TEST = "/usr/lib/nux/unity_support_test" if (not os.path.exists(UNITY_SUPPORT_TEST) or "DISPLAY" not in os.environ): return # see if there is a running unity, that service is used by both 2d,3d return_code = subprocess.call( ["ps", "-C", "unity-panel-service"], stdout=open(os.devnull, "w")) if return_code != 0: logging.debug( "_test_and_warn_for_unity_3d_support: no unity running") return # if we are here, we need to test and warn return_code = subprocess.call([UNITY_SUPPORT_TEST]) logging.debug( "_test_and_warn_for_unity_3d_support '%s' returned '%s'" % ( UNITY_SUPPORT_TEST, return_code)) if return_code != 0: res = self._view.askYesNoQuestion( _("Your graphics hardware may not be fully supported in " "Ubuntu 14.04."), _("Running the 'unity' desktop environment is not fully " "supported by your graphics hardware. You will maybe end " "up in a very slow environment after the upgrade. Our " "advice is to keep the LTS version for now. For more " "information see " "https://wiki.ubuntu.com/X/Bugs/" "UpdateManagerWarningForUnity3D " "Do you still want to continue with the upgrade?") ) if not res: self.controller.abort() def _test_and_warn_on_i8xx(self): I8XX_PCI_IDS = ["8086:7121", # i810 "8086:7125", # i810e "8086:1132", # i815 "8086:3577", # i830 "8086:2562", # i845 "8086:3582", # i855 "8086:2572", # i865 ] lspci = self._get_pci_ids() if set(I8XX_PCI_IDS).intersection(lspci): res = self._view.askYesNoQuestion( _("Your graphics hardware may not be fully supported in " "Ubuntu 12.04 LTS."), _("The support in Ubuntu 12.04 LTS for your Intel " "graphics hardware is limited " "and you may encounter problems after the upgrade. " "For more information see " "https://wiki.ubuntu.com/X/Bugs/UpdateManagerWarningForI8xx " "Do you want to continue with the upgrade?") ) if not res: self.controller.abort() def _test_and_warn_on_dropped_fglrx_support(self): """ Some cards are no longer supported by fglrx. Check if that is the case and warn """ # this is to deal with the fact that support for some of the cards # that fglrx used to support got dropped if (self._checkVideoDriver("fglrx") and not self._supportInModaliases("fglrx")): res = self._view.askYesNoQuestion( _("Upgrading may reduce desktop " "effects, and performance in games " "and other graphically intensive " "programs."), _("This computer is currently using " "the AMD 'fglrx' graphics driver. " "No version of this driver is " "available that works with your " "hardware in Ubuntu 10.04 LTS.\n\n" "Do you want to continue?")) if not res: self.controller.abort() # if the user wants to continue we remove the fglrx driver # here because its no use (no support for this card) removals = [ "xorg-driver-fglrx", "xorg-driver-fglrx-envy", "fglrx-kernel-source", "fglrx-amdcccle", "xorg-driver-fglrx-dev", "libamdxvba1" ] logging.debug("remove %s" % ", ".join(removals)) postupgradepurge = self.controller.config.getlist( "Distro", "PostUpgradePurge") for remove in removals: postupgradepurge.append(remove) self.controller.config.set("Distro", "PostUpgradePurge", ",".join(postupgradepurge)) def _test_and_fail_on_i386(self): """ Test and fail if the package architecture is i386 as we have dropped support for this architecture. """ if self._from_version == '18.04': updates_end = 'April 2023' elif self._from_version == '19.04': updates_end = 'January 2020' # check on i386 only if self.arch == "i386": logging.error("apt architecture is i386") summary = _("Sorry, no more upgrades for this system") msg = _("There will not be any further Ubuntu releases " "for this system's 'i386' architecture.\n\n" "Updates for Ubuntu %s will continue until %s." % (self._from_version, updates_end)) self._view.error(summary, msg) self.controller.abort() def _test_and_fail_on_non_arm_v6(self): """ Test and fail if the cpu is not a arm v6 or greater, from 9.10 on we do no longer support those CPUs """ if self.arch == "armel": if not self._checkArmCPU(): self._view.error( _("No ARMv6 CPU"), _("Your system uses an ARM CPU that is older " "than the ARMv6 architecture. " "All packages in karmic were built with " "optimizations requiring ARMv6 as the " "minimal architecture. It is not possible to " "upgrade your system to a new Ubuntu release " "with this hardware.")) self.controller.abort() def _test_and_fail_on_aufs(self): """ Test and fail if docker has aufs storage driver available as it is deprecated after 20.04. Even if no containers are currently running aufs, the upgrade could break existing container images. """ for aufs_dir in ("/var/snap/docker/common/var-lib-docker/aufs", "/var/lib/docker/aufs"): if (os.path.exists(aufs_dir)): logging.error("Docker config uses aufs") summary = _("Sorry, this storage driver is not supported " "in kernels for newer releases") msg = _("There will not be any further Ubuntu releases " "that provide kernel support for the aufs " "storage driver.\n\n" "Please ensure that none of your containers are " "using the aufs storage driver, remove the directory " "%s and try again." % aufs_dir) self._view.error(summary, msg) self.controller.abort() def _test_and_fail_on_power8(self): """ Test and fail if running on a POWER8 processor. Starting with Ubuntu 22.04, ppc64el is compiled for POWER9 processors. Prior to 22.04 it was/is compiled for POWER8 processors. Hence POWER8 processors are not able to run, install or upgrade to jammy. """ if self.arch != "ppc64el": return updates_end = "" if self._from_version == "20.04": updates_end = "April 2025" elif self._from_version == "21.10": updates_end = "July 2022" with open("/proc/cpuinfo") as f: cpuinfo = f.read() if re.search(r"^cpu\s*:\s*POWER8", cpuinfo, re.MULTILINE): logging.error("POWER8 processor detected") summary = _("Sorry, no more upgrades for this system") msg = _("There will not be any further Ubuntu releases " "for this system's POWER8 processor.\n\n" "Updates for Ubuntu %s will continue until %s." % (self._from_version, updates_end)) self._view.error(summary, msg) self.controller.abort() def _test_and_warn_if_vserver(self): """ upstart and vserver environments are not a good match, warn if we find one """ # verver test (LP: #454783), see if there is a init around try: os.kill(1, 0) except OSError: logging.warning("no init found") res = self._view.askYesNoQuestion( _("No init available"), _("Your system appears to be a virtualised environment " "without an init daemon, e.g. Linux-VServer. " "Ubuntu 10.04 LTS cannot function within this type of " "environment, requiring an update to your virtual " "machine configuration first.\n\n" "Are you sure you want to continue?")) if not res: self.controller.abort() self._view.processEvents() def _test_and_warn_if_ros_installed(self, cache): """ Test and warn if ROS is installed. A given ROS release only supports specific Ubuntu releases, and can cause the upgrade to fail in an overly-cryptic manner. """ # These are the root ROS 1 and 2 dependencies as of 07/27/2020 ros_package_patterns = set() for package_name in ( "catkin", "rosboost-cfg", "rosclean", "ros-environment", "ros-workspace"): ros_package_patterns.add( re.compile(r"ros-[^\-]+-%s" % package_name)) ros_is_installed = False for pkg in cache: if ros_is_installed: break for pattern in ros_package_patterns: if pattern.match(pkg.name): if pkg.is_installed or pkg.marked_install: ros_is_installed = True break if ros_is_installed: res = self._view.askYesNoQuestion( _("The Robot Operating System (ROS) is installed"), _("It appears that ROS is currently installed. Each ROS " "release is very strict about the versions of Ubuntu " "it supports, and Ubuntu upgrades can fail if that " "guidance isn't followed. Before continuing, please " "either uninstall ROS, or ensure the ROS release you " "have installed supports the version of Ubuntu to " "which you're upgrading.\n\n" "For ROS 1 releases, refer to REP 3:\n" "https://www.ros.org/reps/rep-0003.html\n\n" "For ROS 2 releases, refer to REP 2000:\n" "https://www.ros.org/reps/rep-2000.html\n\n" "Are you sure you want to continue?")) if not res: self.controller.abort() def _maybe_prevent_flatpak_auto_removal(self): """ If flatpak is installed, and there are either active remotes, or flatpak apps installed, prevent flatpak's auto-removal on upgrade. """ prevent_auto_removal = False if "flatpak" not in self.controller.cache: return if not self.controller.cache["flatpak"].is_installed: return if not os.path.exists("/usr/bin/flatpak"): return for subcmd in ["remotes", "list"]: r = subprocess.run( ["/usr/bin/flatpak", subcmd], stdout=subprocess.PIPE ) if r.stdout.decode("utf-8").strip(): prevent_auto_removal = True break logging.debug("flatpak will{}be marked as manually installed" .format(" " if prevent_auto_removal else " NOT ")) if not prevent_auto_removal: return self.controller.cache["flatpak"].mark_auto(auto=False) for pkg in ("plasma-discover-backend-flatpak", "gnome-software-plugin-flatpak"): if pkg not in self.controller.cache: continue if not self.controller.cache[pkg].is_installed: continue logging.debug("{} will be marked as manually installed" .format(pkg)) self.controller.cache[pkg].mark_auto(auto=False) self.controller.cache.commit( self._view.getAcquireProgress(), self._view.getInstallProgress(self.controller.cache) ) def _add_apport_ignore_list(self): ignore_list = [ '/usr/libexec/tracker-extract-3', # LP: #2012638 '/usr/sbin/update-apt-xapian-index', # LP: #2058227 ] path = '/etc/apport/blacklist.d/upgrade-quirks-ignore-list' try: os.makedirs(os.path.dirname(path), exist_ok=True) with open(path, 'w') as f: for bin in ignore_list: f.write(f'{bin}\n') except Exception as e: logging.debug(f'Failed to create {path}: {e}') def _remove_apport_ignore_list(self): path = '/etc/apport/blacklist.d/upgrade-quirks-ignore-list' try: os.remove(path) except Exception as e: logging.debug(f'Failed to remove {path}: {e}') def _checkArmCPU(self): """ parse /proc/cpuinfo and search for ARMv6 or greater """ logging.debug("checking for ARM CPU version") if not os.path.exists("/proc/cpuinfo"): logging.error("cannot open /proc/cpuinfo ?!?") return False with open("/proc/cpuinfo") as f: cpuinfo = f.read() if re.search(r"^Processor\s*:\s*ARMv[45]", cpuinfo, re.MULTILINE): return False return True def _readDMIVendor(self): """ read /sys/class/dmi/id/sys_vendor in case there are system specific issues with upgrading e.g LP: #1928434 """ logging.debug("checking for system vendor") if not os.path.exists("/sys/class/dmi/id/sys_vendor"): logging.error("cannot open /sys/class/dmi/id/sys_vendor") return '' with open("/sys/class/dmi/id/sys_vendor") as f: vendor = f.read() return vendor def _stopApparmor(self): """ /etc/init.d/apparmor stop (see bug #559433)""" if os.path.exists("/etc/init.d/apparmor"): logging.debug("/etc/init.d/apparmor stop") subprocess.call(["/etc/init.d/apparmor", "stop"]) def _stopDocvertConverter(self): " /etc/init.d/docvert-converter stop (see bug #450569)" if os.path.exists("/etc/init.d/docvert-converter"): logging.debug("/etc/init.d/docvert-converter stop") subprocess.call(["/etc/init.d/docvert-converter", "stop"]) def _killUpdateNotifier(self): "kill update-notifier" # kill update-notifier now to suppress reboot required if os.path.exists("/usr/bin/killall"): logging.debug("killing update-notifier") subprocess.call(["killall", "-q", "update-notifier"]) def _killKBluetooth(self): """killall kblueplugd kbluetooth (riddel requested it)""" if os.path.exists("/usr/bin/killall"): logging.debug("killing kblueplugd kbluetooth4") subprocess.call(["killall", "-q", "kblueplugd", "kbluetooth4"]) def _pokeScreensaver(self): if (os.path.exists("/usr/bin/xdg-screensaver") and os.environ.get('DISPLAY')): logging.debug("setup poke timer for the screensaver") cmd = "while true;" cmd += " do /usr/bin/xdg-screensaver reset >/dev/null 2>&1;" cmd += " sleep 30; done" try: self._poke = subprocess.Popen(cmd, shell=True) atexit.register(self._stopPokeScreensaver) except (OSError, ValueError): logging.exception("failed to setup screensaver poke") def _stopPokeScreensaver(self): res = False if self._poke is not None: try: self._poke.terminate() res = self._poke.wait() except OSError: logging.exception("failed to stop screensaver poke") self._poke = None return res def _removeOldApportCrashes(self): " remove old apport crash files and whoopsie control files " try: for ext in ['.crash', '.upload', '.uploaded']: for f in glob.glob("/var/crash/*%s" % ext): logging.debug("removing old %s file '%s'" % (ext, f)) os.unlink(f) except Exception as e: logging.warning("error during unlink of old crash files (%s)" % e) def _checkStoreConnectivity(self): """ check for connectivity to the snap store to install snaps""" res = False snap_env = os.environ.copy() snap_env["LANG"] = "C.UTF-8" connected = Popen(["snap", "debug", "connectivity"], stdout=PIPE, stderr=PIPE, env=snap_env, universal_newlines=True).communicate() if re.search(r"^ \* PASS", connected[0], re.MULTILINE): self._snapstore_reachable = True return # can't connect elif re.search(r"^ \*.*unreachable", connected[0], re.MULTILINE): logging.error("No snap store connectivity") old_lxd_deb_installed = False cache = self.controller.cache if 'lxd' in cache: # epoch 1 is the transitional deb if cache['lxd'].is_installed and not \ cache['lxd'].candidate.version.startswith("1:"): logging.error("lxd is installed") old_lxd_deb_installed = True if old_lxd_deb_installed: summary = _("Connection to the Snap Store failed") msg = _("You have the package lxd installed but your " "system is unable to reach the Snap Store. " "lxd is now provided via a snap and the release " "upgrade will fail if snapd is not functional. " "Please make sure you're connected to the " "Internet and update any firewall or proxy " "settings as needed so that you can reach " "api.snapcraft.io. If you are an enterprise " "with a firewall setup you may want to configure " "a Snap Store proxy." ) self._view.error(summary, msg) self.controller.abort() else: res = self._view.askYesNoQuestion( _("Connection to Snap Store failed"), _("Your system does not have a connection to the Snap " "Store. For the best upgrade experience make sure " "that your system can connect to api.snapcraft.io.\n" "Do you still want to continue with the upgrade?") ) # debug command not available elif 'error: unknown command' in connected[1]: logging.error("snap debug command not available") res = self._view.askYesNoQuestion( _("Outdated snapd package"), _("Your system does not have the latest version of snapd. " "Please update the version of snapd on your system to " "improve the upgrade experience.\n" "Do you still want to continue with the upgrade?") ) # not running as root elif 'error: access denied' in connected[1]: res = False logging.error("Not running as root!") else: logging.error("Unhandled error connecting to the snap store.") if not res: self.controller.abort() def _calculateSnapSizeRequirements(self): import json import urllib.request from urllib.error import URLError # first fetch the list of snap-deb replacements that will be needed # and store them for future reference, along with other data we'll # need in the process self._prepare_snap_replacement_data() # now perform direct API calls to the store, requesting size # information for each of the snaps needing installation self._view.updateStatus(_("Calculating snap size requirements")) for snap, snap_object in self._snap_list.items(): if snap_object['command'] != 'install': continue action = { "instance-key": "upgrade-size-check", "action": "download", "snap-id": snap_object['snap-id'], "channel": snap_object['channel'], } data = { "context": [], "actions": [action], } req = urllib.request.Request( url='https://api.snapcraft.io/v2/snaps/refresh', data=bytes(json.dumps(data), encoding='utf-8')) req.add_header('Snap-Device-Series', '16') req.add_header('Content-type', 'application/json') req.add_header('Snap-Device-Architecture', self.arch) try: response = urllib.request.urlopen(req).read() info = json.loads(response) size = int(info['results'][0]['snap']['download']['size']) except (KeyError, URLError, ValueError): logging.debug("Failed fetching size of snap %s" % snap) continue self.extra_snap_space += size def _replaceDebsAndSnaps(self): """ install a snap and mark its corresponding package for removal """ self._view.updateStatus(_("Processing snap replacements")) # _snap_list should be populated by the earlier # _calculateSnapSizeRequirements call. for snap, snap_object in self._snap_list.items(): command = snap_object['command'] if command == 'switch': # TODO: This status should be updated, but the time of # this change to snap switch is post-translation freeze. self._view.updateStatus(_("refreshing snap %s" % snap)) popenargs = ["snap", command, "--channel", snap_object['channel'], snap] elif command == 'remove': self._view.updateStatus(_("removing snap %s" % snap)) popenargs = ["snap", command, snap] else: self._view.updateStatus(_("installing snap %s" % snap)) popenargs = ["snap", command, "--channel", snap_object['channel'], snap] try: self._view.processEvents() proc = subprocess.run( popenargs, stdout=subprocess.PIPE, check=True) self._view.processEvents() except subprocess.CalledProcessError: logging.debug("%s of snap %s failed" % (command, snap)) continue if proc.returncode == 0: logging.debug("%s of snap %s succeeded" % (command, snap)) if command == 'install' and snap_object['deb']: self.controller.forced_obsoletes.append(snap_object['deb']) def _checkPae(self): " check PAE in /proc/cpuinfo " # upgrade from Precise will fail if PAE is not in cpu flags logging.debug("_checkPae") pae = 0 with open('/proc/cpuinfo') as f: cpuinfo = f.read() if re.search(r"^flags\s+:.* pae ", cpuinfo, re.MULTILINE): pae = 1 if not pae: logging.error("no pae in /proc/cpuinfo") summary = _("PAE not enabled") msg = _("Your system uses a CPU that does not have PAE enabled. " "Ubuntu only supports non-PAE systems up to Ubuntu " "12.04. To upgrade to a later version of Ubuntu, you " "must enable PAE (if this is possible) see:\n" "http://help.ubuntu.com/community/EnablingPAE") self._view.error(summary, msg) self.controller.abort() def _checkVideoDriver(self, name): " check if the given driver is in use in xorg.conf " XORG = "/etc/X11/xorg.conf" if not os.path.exists(XORG): return False with open(XORG) as f: lines = f.readlines() for line in lines: s = line.split("#")[0].strip() # check for fglrx driver entry if (s.lower().startswith("driver") and s.endswith('"%s"' % name)): return True return False def _applyPatches(self, patchdir="./patches"): """ helper that applies the patches in patchdir. the format is _path_to_file.md5sum and it will apply the diff to that file if the md5sum matches """ if not os.path.exists(patchdir): logging.debug("no patchdir") return for f in os.listdir(patchdir): # skip, not a patch file, they all end with .$md5sum if "." not in f: logging.debug("skipping '%s' (no '.')" % f) continue logging.debug("check if patch '%s' needs to be applied" % f) (encoded_path, md5sum, result_md5sum) = f.rsplit(".", 2) # FIXME: this is not clever and needs quoting support for # filenames with "_" in the name path = encoded_path.replace("_", "/") logging.debug("target for '%s' is '%s' -> '%s'" % ( f, encoded_path, path)) # target does not exist if not os.path.exists(path): logging.debug("target '%s' does not exist" % path) continue # check the input md5sum, this is not strictly needed as patch() # will verify the result md5sum and discard the result if that # does not match but this will remove a misleading error in the # logs md5 = hashlib.md5() with open(path, "rb") as fd: md5.update(fd.read()) if md5.hexdigest() == result_md5sum: logging.debug("already at target hash, skipping '%s'" % path) continue elif md5.hexdigest() != md5sum: logging.warning("unexpected target md5sum, skipping: '%s'" % path) continue # patchable, do it from .DistUpgradePatcher import patch try: patch(path, os.path.join(patchdir, f), result_md5sum) logging.info("applied '%s' successfully" % f) except Exception: logging.exception("ed failed for '%s'" % f) def _supportInModaliases(self, pkgname, lspci=None): """ Check if pkgname will work on this hardware This helper will check with the modaliasesdir if the given pkg will work on this hardware (or the hardware given via the lspci argument) """ # get lspci info (if needed) if not lspci: lspci = self._get_pci_ids() # get pkg if (pkgname not in self.controller.cache or not self.controller.cache[pkgname].candidate): logging.warning("can not find '%s' in cache") return False pkg = self.controller.cache[pkgname] for (module, pciid_list) in \ self._parse_modaliases_from_pkg_header(pkg.candidate.record): for pciid in pciid_list: m = re.match("pci:v0000(.+)d0000(.+)sv.*", pciid) if m: matchid = "%s:%s" % (m.group(1), m.group(2)) if matchid.lower() in lspci: logging.debug("found system pciid '%s' in modaliases" % matchid) return True logging.debug("checking for %s support in modaliases but none found" % pkgname) return False def _parse_modaliases_from_pkg_header(self, pkgrecord): """ return a list of (module1, (pciid, ...), ...)""" if "Modaliases" not in pkgrecord: return [] # split the string modules = [] for m in pkgrecord["Modaliases"].split(")"): m = m.strip(", ") if not m: continue (module, pciids) = m.split("(") modules.append((module, [x.strip() for x in pciids.split(",")])) return modules def _add_extras_repository(self): logging.debug("_add_extras_repository") cache = self.controller.cache if "ubuntu-extras-keyring" not in cache: logging.debug("no ubuntu-extras-keyring, no need to add repo") return if not (cache["ubuntu-extras-keyring"].marked_install or cache["ubuntu-extras-keyring"].installed): logging.debug("ubuntu-extras-keyring not installed/marked_install") return try: import aptsources.sourceslist sources = aptsources.sourceslist.SourcesList() for entry in sources: if "extras.ubuntu.com" in entry.uri: logging.debug("found extras.ubuntu.com, no need to add it") break else: logging.info("no extras.ubuntu.com, adding it to sources.list") sources.add("deb", "http://extras.ubuntu.com/ubuntu", self.controller.toDist, ["main"], "Third party developers repository") sources.save() except Exception: logging.exception("error adding extras.ubuntu.com") def _gutenprint_fixup(self): """ foomatic-db-gutenprint get removed during the upgrade, replace it with the compressed ijsgutenprint-ppds (context is foomatic-db vs foomatic-db-compressed-ppds) """ try: cache = self.controller.cache if ("foomatic-db-gutenprint" in cache and cache["foomatic-db-gutenprint"].marked_delete and "ijsgutenprint-ppds" in cache): logging.info("installing ijsgutenprint-ppds") cache.mark_install( "ijsgutenprint-ppds", "foomatic-db-gutenprint -> ijsgutenprint-ppds rule") except Exception: logging.exception("_gutenprint_fixup failed") def _enable_multiarch(self, foreign_arch="i386"): """ enable multiarch via /etc/dpkg/dpkg.cfg.d/multiarch """ cfg = "/etc/dpkg/dpkg.cfg.d/multiarch" if not os.path.exists(cfg): try: os.makedirs("/etc/dpkg/dpkg.cfg.d/") except OSError: pass with open(cfg, "w") as f: f.write("foreign-architecture %s\n" % foreign_arch) def _is_greater_than(self, term1, term2): """ copied from ubuntu-drivers common """ # We don't want to take into account # the flavour pattern = re.compile('(.+)-([0-9]+)-(.+)') match1 = pattern.match(term1) match2 = pattern.match(term2) if match1 and match2: term1 = '%s-%s' % (match1.group(1), match1.group(2)) term2 = '%s-%s' % (match2.group(1), match2.group(2)) logging.debug('Comparing %s with %s' % (term1, term2)) return apt.apt_pkg.version_compare(term1, term2) > 0 def _get_linux_metapackage(self, cache, headers): """ Get the linux headers or linux metapackage copied from ubuntu-drivers-common """ suffix = headers and '-headers' or '' pattern = re.compile('linux-image-(.+)-([0-9]+)-(.+)') source_pattern = re.compile('linux-(.+)') metapackage = '' version = '' for pkg in cache: if ('linux-image' in pkg.name and 'extra' not in pkg.name and (pkg.is_installed or pkg.marked_install)): match = pattern.match(pkg.name) # Here we filter out packages such as # linux-generic-lts-quantal if match: source = pkg.candidate.record['Source'] current_version = '%s-%s' % (match.group(1), match.group(2)) # See if the current version is greater than # the greatest that we've found so far if self._is_greater_than(current_version, version): version = current_version match_source = source_pattern.match(source) # Set the linux-headers metapackage if '-lts-' in source and match_source: # This is the case of packages such as # linux-image-3.5.0-18-generic which # comes from linux-lts-quantal. # Therefore the linux-headers-generic # metapackage would be wrong here and # we should use # linux-headers-generic-lts-quantal # instead metapackage = 'linux%s-%s-%s' % ( suffix, match.group(3), match_source.group(1)) else: # The scheme linux-headers-$flavour works # well here metapackage = 'linux%s-%s' % ( suffix, match.group(3)) return metapackage def _install_linux_metapackage(self): """ Ensure the linux metapackage is installed for the newest_kernel installed. (LP: #1509305) """ cache = self.controller.cache linux_metapackage = self._get_linux_metapackage(cache, False) # Seen on errors.u.c with linux-rpi2 metapackage # https://errors.ubuntu.com/problem/994bf05fae85fbcd44f721495db6518f2d5a126d if linux_metapackage not in cache: logging.info("linux metapackage (%s) not available" % linux_metapackage) return # install the package if it isn't installed if not cache[linux_metapackage].is_installed: logging.info("installing linux metapackage: %s" % linux_metapackage) reason = "linux metapackage may have been accidentally uninstalled" cache.mark_install(linux_metapackage, reason) def _install_python_is_python2(self): """ Ensure python is removed, before it can produce a conflict with any other package and the python-is-python2 package is installed instead, if python-minimal was installed. """ # python-dbg must come first for reasons unknown replacements = (('python-dbg', 'python2-dbg'), ('python-doc', 'python2-doc'), ('python-minimal', 'python-is-python2'), ('python-dev', 'python-dev-is-python2'), ('libpython-dev', None), ('libpython-stdlib', None), ('libpython-dbg', None)) cache = self.controller.cache # We run with auto_inst=False first to mark our explicit choices so it # can guide the code with auto_inst=True when it makes decisions for auto_inst in False, True: for old, new in replacements: logging.info("checking for %s (auto_inst=%s)" % (old, auto_inst)) if old in cache and cache[old].is_installed: if new: logging.info("installing %s because %s was installed" % (new, old)) reason = "%s was installed on the system" % old if not cache.mark_install(new, reason, auto_fix=False, auto_inst=auto_inst): logging.info("failed to install %s" % new) logging.info("removing %s because %s is being installed" % (old, new)) reason = "%s is being installed on the system" % new if not cache.mark_remove(old, reason, auto_fix=False): logging.info("failed to remove %s", old) solver = apt.cache.ProblemResolver(cache) for old, new in replacements: if old in cache and cache[old].is_installed: if new: if new not in cache: old_inst = [old for old, new in replacements if old in cache and cache[old].is_installed] summary = _("universe component not enabled") msg = _("You have the package %s installed which " "is a python2 package. python2 has been " "deprecated in Ubuntu 20.04 LTS and is now " "available from the universe component of " "the Ubuntu archive. To ensure any existing " "third party code you have installed " "continues to work the release upgrade " "process would install %s for you. However, " "the universe component of the archive is not " "enabled on this system. For the upgrade " "process to proceed you should either enable " "the universe component in " "/etc/apt/sources.list or remove %s" % (old, new, ', '.join(old_inst)) ) logging.info(summary) # necessary to make the error text available again on # stdout for the text frontend cache._stopAptResolverLog() self._view.error(summary, msg) self.controller.abort() else: solver.clear(cache[new]) solver.protect(cache[new]) solver.clear(cache[old]) solver.remove(cache[old]) solver.resolve() def ensure_recommends_are_installed_on_desktops(self): """ ensure that on a desktop install recommends are installed (LP: #759262) """ if not self.controller.serverMode: if not apt.apt_pkg.config.find_b("Apt::Install-Recommends"): msg = "Apt::Install-Recommends was disabled," msg += " enabling it just for the upgrade" logging.warning(msg) apt.apt_pkg.config.set("Apt::Install-Recommends", "1") def _is_deb2snap_metapkg_installed(self, deb2snap_entry): """ Helper function that checks if the given deb2snap entry has at least one metapkg which is installed on the system. """ metapkg_list = deb2snap_entry.get("metapkg", None) if not isinstance(metapkg_list, list): metapkg_list = [metapkg_list] for metapkg in metapkg_list: if metapkg not in self.controller.cache: continue if metapkg and \ self.controller.cache[metapkg].is_installed is False: continue return True return False def _prepare_snap_replacement_data(self): """ Helper function fetching all required info for the deb-to-snap migration: version strings for upgrade (from and to) and the list of snaps (with actions). """ import json self._snap_list = {} from_channel = "stable/ubuntu-%s" % self._from_version to_channel = "stable/ubuntu-%s" % self._to_version seeded_snaps = {} unseeded_snaps = {} try: current_path = os.path.dirname(os.path.abspath(__file__)) d2s_file = open(current_path + '/deb2snap.json', 'r') d2s = json.load(d2s_file) d2s_file.close() for snap in d2s["seeded"]: seed = d2s["seeded"][snap] if not self._is_deb2snap_metapkg_installed(seed): continue deb = seed.get("deb", None) from_chan = seed.get("from_channel", from_channel) to_chan = seed.get("to_channel", to_channel) seeded_snaps[snap] = (deb, from_chan, to_chan) for snap in d2s["unseeded"]: unseed = d2s["unseeded"][snap] deb = unseed.get("deb", None) if not self._is_deb2snap_metapkg_installed(unseed): continue from_chan = unseed.get("from_channel", from_channel) unseeded_snaps[snap] = (deb, from_chan) except Exception as e: logging.warning("error reading deb2snap.json file (%s)" % e) snap_list = '' # list the installed snaps and add them to seeded ones snap_list = subprocess.Popen(["snap", "list"], universal_newlines=True, stdout=subprocess.PIPE).communicate() if snap_list: # first line of output is a header and the last line is empty snaps_installed = [line.split()[0] for line in snap_list[0].split('\n')[1:-1]] for snap in snaps_installed: if snap in seeded_snaps or snap in unseeded_snaps: continue else: seeded_snaps[snap] = (None, from_channel, to_channel) self._view.updateStatus(_("Checking for installed snaps")) for snap, (deb, from_channel, to_channel) in seeded_snaps.items(): snap_object = {} # check to see if the snap is already installed snap_info = subprocess.Popen(["snap", "info", snap], universal_newlines=True, stdout=subprocess.PIPE).communicate() self._view.processEvents() if re.search(r"^installed: ", snap_info[0], re.MULTILINE): logging.debug("Snap %s is installed" % snap) # its not tracking the release channel so don't switch if not re.search(r"^tracking:.*%s" % from_channel, snap_info[0], re.MULTILINE): logging.debug("Snap %s is not tracking the release channel" % snap) continue snap_object['command'] = 'switch' else: # Do not replace packages not installed cache = self.controller.cache if (deb and (deb not in cache or not cache[deb].is_installed)): logging.debug("Deb package %s is not installed. Skipping " "snap package %s installation" % (deb, snap)) continue match = re.search(r"snap-id:\s*(\w*)", snap_info[0]) if not match: logging.debug("Could not parse snap-id for the %s snap" % snap) continue snap_object['command'] = 'install' snap_object['deb'] = deb snap_object['snap-id'] = match[1] snap_object['channel'] = to_channel self._snap_list[snap] = snap_object for snap, (deb, from_channel) in unseeded_snaps.items(): snap_object = {} # check to see if the snap is already installed snap_info = subprocess.Popen(["snap", "info", snap], universal_newlines=True, stdout=subprocess.PIPE).communicate() self._view.processEvents() if re.search(r"^installed: ", snap_info[0], re.MULTILINE): logging.debug("Snap %s is installed" % snap) # its not tracking the release channel so don't remove if not re.search(r"^tracking:.*%s" % from_channel, snap_info[0], re.MULTILINE): logging.debug("Snap %s is not tracking the release channel" % snap) continue snap_object['command'] = 'remove' # check if this snap is being used by any other snaps conns = subprocess.Popen(["snap", "connections", snap], universal_newlines=True, stdout=subprocess.PIPE).communicate() self._view.processEvents() for conn in conns[0].split('\n'): conn_cols = conn.split() if len(conn_cols) != 4: continue plug = conn_cols[1] slot = conn_cols[2] if slot.startswith(snap + ':'): plug_snap = plug.split(':')[0] if plug_snap != '-' and \ plug_snap not in unseeded_snaps: logging.debug("Snap %s is being used by %s. " "Switching it to stable track" % (snap, plug_snap)) snap_object['command'] = 'switch' snap_object['channel'] = 'stable' break self._snap_list[snap] = snap_object return self._snap_list def _replace_pi_boot_config(self, old_config, new_config, boot_config_filename, failure_action): try: boot_backup_filename = boot_config_filename + '.distUpgrade' with open(boot_backup_filename, 'w', encoding='utf-8') as f: f.write(old_config) except IOError as exc: logging.error("unable to write boot config backup to %s: %s; %s", boot_backup_filename, exc, failure_action) return try: with open(boot_config_filename, 'w', encoding='utf-8') as f: f.write(new_config) except IOError as exc: logging.error("unable to write new boot config to %s: %s; %s", boot_config_filename, exc, failure_action) def _replace_fkms_overlay(self, boot_dir='/boot/firmware'): failure_action = ( "You may need to replace the vc4-fkms-v3d overlay with " "vc4-kms-v3d in config.txt on your boot partition") try: boot_config_filename = os.path.join(boot_dir, 'config.txt') with open(boot_config_filename, 'r', encoding='utf-8') as f: boot_config = f.read() except FileNotFoundError: logging.error("failed to open boot configuration in %s; %s", boot_config_filename, failure_action) return new_config = ''.join( # startswith and replace used to cope with (and preserve) any # trailing d-t parameters, and any use of the -pi4 suffix '# changed by do-release-upgrade (LP: #1923673)\n#' + line + line.replace('dtoverlay=vc4-fkms-v3d', 'dtoverlay=vc4-kms-v3d') if line.startswith('dtoverlay=vc4-fkms-v3d') else # camera firmware disabled due to incompatibility with "full" kms # overlay; without the camera firmware active it's also better to # disable gpu_mem leaving the default (64MB) to allow as much as # possible for the KMS driver '# disabled by do-release-upgrade (LP: #1923673)\n#' + line if line.startswith('gpu_mem=') or line.rstrip() == 'start_x=1' else line for line in boot_config.splitlines(keepends=True) ) if new_config == boot_config: logging.warning("no fkms overlay or camera firmware line found " "in %s", boot_config_filename) return self._replace_pi_boot_config( boot_config, new_config, boot_config_filename, failure_action) def _add_kms_overlay(self, boot_dir='/boot/firmware'): failure_action = ( "You may need to add dtoverlay=vc4-kms-v3d to an [all] section " "in config.txt on your boot partition") added_lines = [ '# added by do-release-upgrade (LP: #2065051)', 'dtoverlay=vc4-kms-v3d', 'disable_fw_kms_setup=1', '', '[pi3+]', 'dtoverlay=vc4-kms-v3d,cma-128', '', '[pi02]', 'dtoverlay=vc4-kms-v3d,cma-128', '', '[all]', ] try: boot_config_filename = os.path.join(boot_dir, 'config.txt') with open(boot_config_filename, 'r', encoding='utf-8') as f: boot_config = f.read() except FileNotFoundError: logging.error("failed to open boot configuration in %s; %s", boot_config_filename, failure_action) return def find_insertion_point(lines): # Returns the zero-based index of the dtoverlay=vc4-kms-v3d line in # an [all] section, if one exists, or the last line of the last # [all] section of the file, if one does not exist in_all = True last = 0 for index, line in enumerate(lines): line = line.rstrip() if in_all: last = index # startswith used to cope with any trailing dtparams if line.startswith('dtoverlay=vc4-kms-v3d'): return last elif line.startswith('[') and line.endswith(']'): in_all = line == '[all]' elif line.startswith('include '): # [sections] are included from includes verbatim, hence # (without reading the included file) we must assume # we're no longer in an [all] section in_all = False else: in_all = line == '[all]' return last def add_kms_overlay(lines): insert_point = find_insertion_point(lines) try: if lines[insert_point].startswith('dtoverlay=vc4-kms-v3d'): return lines except IndexError: # Empty config, apparently! pass lines[insert_point:insert_point] = added_lines return lines lines = [line.rstrip() for line in boot_config.splitlines()] lines = add_kms_overlay(lines) new_config = ''.join(line + '\n' for line in lines) if new_config == boot_config: logging.warning("no addition of KMS overlay required in %s", boot_config_filename) return self._replace_pi_boot_config( boot_config, new_config, boot_config_filename, failure_action) def _remove_uboot_on_rpi(self, boot_dir='/boot/firmware'): kernel_line = 'kernel=vmlinuz' initramfs_line = 'initramfs initrd.img followkernel' failure_action = ( "You may need to replace u_boot_* with vmlinuz, and add " "{initramfs_line!r} to config.txt on your boot " "partition; see LP: #1936401 for further details") failure_action = failure_action.format(initramfs_line=initramfs_line) change_prefix = '# commented by do-release-upgrade (LP: #1936401)' added_prefix = '# added by do-release-upgrade (LP: #1936401)' merge_prefix = '# merged from {} by do-release-upgrade (LP: #1936401)' try: boot_config_filename = os.path.join(boot_dir, 'config.txt') with open(boot_config_filename, 'r', encoding='utf-8') as f: boot_config = f.read() except FileNotFoundError: logging.error("failed to open boot configuration in %s; %s", boot_config_filename, failure_action) return def replace_uboot(lines): result = [] removed_uboot = added_kernel = False for line in lines: if line == '[all]': # Add the vmlinuz kernel and initrd.img to the first # encountered [all] section, just in case the user has any # custom kernel overrides later in the sequence result.append(line) if not added_kernel: result.append(added_prefix) result.append(kernel_line) result.append(initramfs_line) added_kernel = True elif line.startswith('device_tree_address='): # Disable any device_tree_address= line (leave the boot # firmware to place this rather than risk trampling over it # with kernel/initrd) result.append(change_prefix) result.append('#' + line) elif line.startswith('kernel=uboot_rpi_'): # Disable all kernel=uboot_rpi_* lines found in the # configuration removed_uboot = True result.append(change_prefix) result.append('#' + line) else: result.append(line) # We don't *want* to touch the config unless we absolutely have to, # and the user may have already performed this conversion (e.g. to # take advantage of USB MSD boot), or otherwise customized their # boot configuration. Hence, if we didn't find (and remove) any # u-boot entries, assume the kernel/initrd config was already fine # and return the verbatim config if removed_uboot: if not added_kernel: result.append(added_prefix) result.append('[all]') result.append(kernel_line) result.append(initramfs_line) return result else: return lines def merge_includes(lines): result = [] skip_comments = True found_includes = False for line in lines: # Skip the initial comment block warning that config.txt is not # to be edited (the usercfg.txt and syscfg.txt files were # merged in the groovy release, but not for upgraders) if line.startswith('#') and skip_comments: continue skip_comments = False if line in ('include syscfg.txt', 'include usercfg.txt'): # Merge the usercfg.txt and syscfg.txt configuration files # into config.txt, skipping the initial comments. Note that # we don't bother with other includes the user has added # themselves (as they presumably want to keep those) found_includes = True included_filename = line.split(maxsplit=1)[1] result.append(merge_prefix.format(included_filename)) included_filename = os.path.join(boot_dir, included_filename) skip_comments = True with open(included_filename, 'r', encoding='utf-8') as f: for line in f: if line.startswith('#') and skip_comments: continue skip_comments = False result.append(line.rstrip()) target_filename = included_filename + '.distUpgrade' try: os.rename(included_filename, target_filename) except IOError as exc: logging.error("failed to move included configuration " "from %s to %s; %s", included_filename, target_filename, exc) else: result.append(line) # Again, if we found no includes, return the original verbatim # (i.e. with initial comments intact) if found_includes: return result else: return lines lines = [line.rstrip() for line in boot_config.splitlines()] lines = replace_uboot(merge_includes(lines)) new_config = ''.join(line + '\n' for line in lines) if new_config == boot_config: logging.warning("no u-boot removal performed in %s", boot_config_filename) return self._replace_pi_boot_config( boot_config, new_config, boot_config_filename, failure_action) def _set_generic_font(self): """ Due to changes to the Ubuntu font we enable a generic font (in practice DejaVu or Noto) during the upgrade. See https://launchpad.net/bugs/2034986 """ temp_font = 'Sans' if self._did_change_font: return if os.getenv('XDG_SESSION_TYPE', '') in ('', 'tty'): # Avoid running this on server systems or when the upgrade # is done over ssh. return if not {'SUDO_UID', 'PKEXEC_UID'}.intersection(os.environ): logging.debug( 'Cannot determine how root privileges were gained, will ' 'not change font' ) return try: uid = int(os.getenv('SUDO_UID', os.getenv('PKEXEC_UID'))) pwuid = pwd.getpwuid(uid) except ValueError: logging.debug( 'Cannot determine non-root UID, will not change font' ) return schema = 'org.gnome.desktop.interface' desktops = os.getenv('XDG_CURRENT_DESKTOP', '').split(':') # Some flavors use other schemas for the desktop font. if 'MATE' in desktops or 'UKUI' in desktops: schema = 'org.mate.interface' elif 'X-Cinnamon' in desktops: schema = 'org.cinnamon.desktop.interface' # Some flavors lack the systemd integration needed for a # user service, so we create an autostart file instead. use_autostart = bool( set(['Budgie', 'LXQt', 'MATE', 'UKUI', 'X-Cinnamon', 'XFCE']) & set(desktops) ) r = subprocess.run( ['systemd-run', '--user', '-M', f'{pwuid.pw_name}@.host', '--wait', '--pipe', '-q', '--', '/usr/bin/gsettings', 'get', f'{schema}', 'font-name'], stdout=subprocess.PIPE, encoding='utf-8', ) (font, _, size) = r.stdout.strip('\'\n').rpartition(' ') font = font or 'Ubuntu' try: int(size) except ValueError: size = '11' logging.debug(f'Setting generic font {temp_font} {size} during the ' f'upgrade. Original font is {font} {size}.') r = subprocess.run([ 'systemd-run', '--user', '-M', f'{pwuid.pw_name}@.host', '--wait', '--pipe', '-q', '--', '/usr/bin/gsettings', 'set', f'{schema}', 'font-name', f'"{temp_font} {size}"' ]) if r.returncode != 0: logging.debug(f'Failed to change font to {temp_font} {size}') return self._did_change_font = True # Touch a file to indiate that the font should be restored on the next # boot. need_font_restore_file = os.path.join( pwuid.pw_dir, '.config/upgrade-need-font-restore' ) os.makedirs(os.path.dirname(need_font_restore_file), exist_ok=True) pathlib.Path(need_font_restore_file).touch(mode=0o666) os.chown(need_font_restore_file, pwuid.pw_uid, pwuid.pw_gid) if use_autostart: autostart_file = '/etc/xdg/autostart/upgrade-restore-font.desktop' os.makedirs(os.path.dirname(autostart_file), exist_ok=True) flag = '$HOME/.config/upgrade-need-font-restore' with open(autostart_file, 'w') as f: f.write( '[Desktop Entry]\n' 'Name=Restore font after upgrade\n' 'Comment=Auto-generated by ubuntu-release-upgrader\n' 'Type=Application\n' f'Exec=sh -c \'if [ -e "{flag}" ]; then gsettings set ' f'{schema} font-name "{font} {size}";' f'rm -f "{flag}"; fi\'\n' 'NoDisplay=true\n' ) return # If we set the font back to normal before a reboot, the font will # still get all messed up. To allow normal usage whether the user # reboots immediately or not, create a service that will run only if a # ~/.config/upgrade-need-font-restore exists, and then remove that file # in ExecStart. This has the effect of creating a one-time service on # the next boot. unit_file = '/usr/lib/systemd/user/upgrade-restore-font.service' os.makedirs(os.path.dirname(unit_file), exist_ok=True) with open(unit_file, 'w') as f: f.write( '# Auto-generated by ubuntu-release-upgrader\n' '[Unit]\n' 'Description=Restore font after upgrade\n' 'After=graphical-session.target dconf.service\n' 'ConditionPathExists=%h/.config/upgrade-need-font-restore\n' '\n' '[Service]\n' 'Type=oneshot\n' 'ExecStart=/usr/bin/gsettings set ' f'{schema} font-name \'{font} {size}\'\n' 'ExecStart=/usr/bin/rm -f ' '%h/.config/upgrade-need-font-restore\n' '\n' '[Install]\n' 'WantedBy=graphical-session.target\n' ) subprocess.run([ 'systemctl', '--user', '-M', f'{pwuid.pw_name}@.host', 'daemon-reload' ]) r = subprocess.run([ 'systemctl', '--user', '-M', f'{pwuid.pw_name}@.host', 'enable', os.path.basename(unit_file) ]) if r.returncode != 0: logging.debug(f'Failed to enable {os.path.basename(unit_file)}. ' 'Font will not be restored on reboot') def _maybe_remove_gpg_wks_server(self): """ Prevent postfix from being unnecessarily installed, and leading to a debconf prompt (LP: #2060578). """ # We want to use attributes of the cache that are only exposed in # apt_pkg.Cache, not the higher level apt.Cache. Hence we operate on # apt.Cache._cache. cache = self.controller.cache._cache try: if not cache['gpg-wks-server'].current_ver: # Not installed, nothing to do. return provides_mta = cache['mail-transport-agent'].provides_list installed_mta = [ ver for _, _, ver in provides_mta if ver.parent_pkg.current_ver ] except KeyError: # Something wasn't in the cache, ignore. return if not any(installed_mta): logging.info( 'No mail-transport-agent installed, ' 'marking gpg-wks-server for removal' ) self.controller.cache['gpg-wks-server'].mark_delete(auto_fix=False) apt.ProblemResolver(self.controller.cache).protect( self.controller.cache['gpg-wks-server'] ) def _test_and_fail_on_armhf_raspi(self): """ Test and fail if running armhf on a Raspberry Pi. Starting with Ubuntu 24.04, armhf is not well supported on Raspberry Pi. Hence, prevent upgrades on such platforms. LP: #2060220. """ if self.arch != 'armhf': return if ( 'linux-image-raspi' in self.controller.cache and self.controller.cache['linux-image-raspi'].is_installed ): logging.error('Detected Raspberry Pi kernel on armhf') di = distro_info.UbuntuDistroInfo() releases = { r.series: r for r in di.get_all('object') } from_release = releases.get(self.controller.fromDist) if from_release is not None: updates_end = from_release.eol.strftime('%B %Y') updates_end_msg = _( f'Updates for Ubuntu {from_release.version} will ' f'continue until {updates_end}.' ) else: # This shouldn't happen. But rather than crash the upgrader, # just don't show the second part of the message. updates_end_msg = '' self._view.error( _( 'Sorry, cannot upgrade this system to 24.04 LTS' ), _( 'The Raspberry Pi kernel for Ubuntu 24.04 LTS ' 'does not support the armhf architecture.\n\n' ) + updates_end_msg, ) self.controller.abort() def _install_t64_replacement_packages(self): """ LP: #2061175 """ for package in self.controller.cache: if not package.is_installed: continue if package.candidate and package.candidate.downloadable: continue # If we get here, then it means that this package is installed # and its candidate version is obsolete (i.e. not downloadable). # Now, we need to find a replacement for it. logging.debug(f'Searching for replacement for {package.name}') reverse_depends_list = [ (dep.dep_type_untranslated, dep.parent_ver) for dep in package._pkg.rev_depends_list ] provides_list = [ver for _, _, ver in package._pkg.provides_list] for ver in provides_list: if ('Replaces', ver) not in reverse_depends_list: continue if ( ('Breaks', ver) not in reverse_depends_list and ('Conflicts', ver) not in reverse_depends_list ): continue replacement = apt.Package( self.controller.cache, ver.parent_pkg ) if replacement.candidate is None: continue if replacement.candidate._cand != ver: continue logging.debug( f'Found replacement {replacement.name} ' f'for {package.name}' ) # Transition the automatically installed bit from_user = not package.is_auto_installed replacement.mark_install(auto_fix=False, auto_inst=False, from_user=from_user) package.mark_delete(auto_fix=False) apt.ProblemResolver(self.controller.cache).protect(package) # We found a replacement. Exit the loop. break else: # We did not find a replacement in the provides list. logging.debug( f'Failed to find a replacement for {package.name}' ) def _handle_ufw_breaks(self): """ LP: #2061891 """ # This is only required for upgrades from jammy. if self.controller.fromDist != 'jammy': return try: ufw = self.controller.cache['ufw'] except KeyError: return if not ufw.is_installed: return remove_ufw = False for name in ('netfilter-persistent', 'iptables-persistent'): try: pkg = self.controller.cache[name] except KeyError: continue if pkg.is_installed: logging.info( f'Keeping {name}, and removing ufw as a result.' ) pkg.mark_install(auto_fix=False, auto_inst=False) remove_ufw = True if remove_ufw: ufw.mark_delete(auto_fix=False) apt.ProblemResolver(self.controller.cache).protect(ufw) def _test_and_fail_on_tpm_fde(self): """ LP: #2065229 """ try: snap_list = subprocess.check_output(['snap', 'list']) snaps = [s.decode().split()[0] for s in snap_list.splitlines()] except FileNotFoundError: # snapd not installed? return if ( 'pc-kernel' in snaps and 'ubuntu-desktop-minimal' in self.controller.cache and self.controller.cache['ubuntu-desktop-minimal'].is_installed ): logging.debug('Detected TPM FDE system') di = distro_info.UbuntuDistroInfo() version = di.version(self.controller.toDist) or 'next release' self._view.error( _( f'Sorry, cannot upgrade this system to {version}' ), _( 'Upgrades for desktop systems running TPM FDE are not ' 'currently supported. ' 'Please see https://launchpad.net/bugs/2065229 ' 'for more information.' ), ) self.controller.abort()