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lib
python3
dist-packages
DistUpgrade
File Content:
DistUpgradeCache.py
# DistUpgradeCache.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 glob import locale import os import re import logging import time import datetime import threading import configparser from subprocess import Popen, PIPE from .DistUpgradeGettext import gettext as _ from .DistUpgradeGettext import ngettext from .utils import inside_chroot class CacheException(Exception): pass class CacheExceptionLockingFailed(CacheException): pass class CacheExceptionDpkgInterrupted(CacheException): pass def estimate_kernel_initrd_size_in_boot(): """estimate the amount of space used by the kernel and initramfs in /boot, including a safety margin """ kernel = 0 initrd = 0 kver = os.uname()[2] for f in glob.glob("/boot/*%s*" % kver): if f == '/boot/initrd.img-%s' % kver: initrd += os.path.getsize(f) # don't include in the estimate any files that are left behind by # an interrupted package manager run elif (f.find('initrd.img') >= 0 or f.find('.bak') >= 0 or f.find('.dpkg-') >= 0): continue else: kernel += os.path.getsize(f) if kernel == 0: logging.warning( "estimate_kernel_initrd_size_in_boot() returned '0' for kernel?") kernel = 16*1024*1024 if initrd == 0: logging.warning( "estimate_kernel_initrd_size_in_boot() returned '0' for initrd?") initrd = 175*1024*1024 # add small safety buffer kernel += 1*1024*1024 # safety buffer as a percentage of the existing initrd's size initrd_buffer = 1*1024*1024 if initrd * 0.05 > initrd_buffer: initrd_buffer = initrd * 0.05 initrd += initrd_buffer return kernel,initrd KERNEL_SIZE, INITRD_SIZE = estimate_kernel_initrd_size_in_boot() class FreeSpaceRequired(object): """ FreeSpaceRequired object: This exposes: - the total size required (size_total) - the dir that requires the space (dir) - the additional space that is needed (size_needed) """ def __init__(self, size_total, dir, size_needed): self.size_total = size_total self.dir = dir self.size_needed = size_needed def __str__(self): return "FreeSpaceRequired Object: Dir: %s size_total: %s size_needed: %s" % (self.dir, self.size_total, self.size_needed) class NotEnoughFreeSpaceError(CacheException): """ Exception if there is not enough free space for this operation """ def __init__(self, free_space_required_list): self.free_space_required_list = free_space_required_list class MyCache(apt.Cache): ReInstReq = 1 HoldReInstReq = 3 # init def __init__(self, config, view, quirks, progress=None, lock=True): self.to_install = [] self.to_remove = [] self.view = view self.quirks = quirks self.lock = False self.partialUpgrade = False self.config = config self.metapkgs = self.config.getlist("Distro", "MetaPkgs") # acquire lock self._listsLock = -1 if lock: try: apt_pkg.pkgsystem_lock() self.lock_lists_dir() self.lock = True except SystemError as e: # checking for this is ok, its not translatable if "dpkg --configure -a" in str(e): raise CacheExceptionDpkgInterrupted(e) raise CacheExceptionLockingFailed(e) # Do not create the cache until we know it is not locked apt.Cache.__init__(self, progress) # a list of regexp that are not allowed to be removed self.removal_denylist = config.getListFromFile("Distro", "RemovalDenylistFile") # the linux metapackage should not be removed self.linux_metapackage = self.quirks._get_linux_metapackage(self, False) self.uname = Popen(["uname", "-r"], stdout=PIPE, universal_newlines=True).communicate()[0].strip() self._initAptLog() # from hardy on we use recommends by default, so for the # transition to the new dist we need to enable them now if (config.get("Sources", "From") == "hardy" and not "RELEASE_UPGRADE_NO_RECOMMENDS" in os.environ): apt_pkg.config.set("APT::Install-Recommends", "true") apt_pkg.config.set("APT::AutoRemove::SuggestsImportant", "false") def _apply_dselect_upgrade(self): """ honor the dselect install state """ for pkg in self: if pkg.is_installed: continue if pkg._pkg.selected_state == apt_pkg.SELSTATE_INSTALL: # upgrade() will take care of this pkg.mark_install(auto_inst=False, auto_fix=False) @property def req_reinstall_pkgs(self): " return the packages not downloadable packages in reqreinst state " reqreinst = set() for pkg in self: if ((not pkg.candidate or not pkg.candidate.downloadable) and (pkg._pkg.inst_state == self.ReInstReq or pkg._pkg.inst_state == self.HoldReInstReq)): reqreinst.add(pkg.name) return reqreinst def fix_req_reinst(self, view): " check for reqreinst state and offer to fix it " reqreinst = self.req_reinstall_pkgs if len(reqreinst) > 0: header = ngettext("Remove package in bad state", "Remove packages in bad 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. " "Do you want to remove this package " "now to continue?", "The packages '%s' are in an inconsistent " "state and need to be reinstalled, but " "no archives can be found for them. Do you " "want to remove these packages now to " "continue?", len(reqreinst)) % ", ".join(reqreinst) if view.askYesNoQuestion(header, summary): self.release_lock() cmd = ["/usr/bin/dpkg", "--remove", "--force-remove-reinstreq"] + list(reqreinst) view.getTerminal().call(cmd) self.get_lock() return True return False # logging stuff def _initAptLog(self): " init logging, create log file" logdir = self.config.getWithDefault("Files", "LogDir", "/var/log/dist-upgrade") if not os.path.exists(logdir): os.makedirs(logdir) apt_pkg.config.set("Dir::Log", logdir) apt_pkg.config.set("Dir::Log::Terminal", "apt-term.log") self.logfd = os.open(os.path.join(logdir, "apt.log"), os.O_RDWR | os.O_CREAT | os.O_APPEND, 0o644) now = datetime.datetime.now() header = "Log time: %s\n" % now os.write(self.logfd, header.encode("utf-8")) # turn on debugging in the cache apt_pkg.config.set("Debug::pkgProblemResolver", "true") apt_pkg.config.set("Debug::pkgDepCache::Marker", "true") apt_pkg.config.set("Debug::pkgDepCache::AutoInstall", "true") def _startAptResolverLog(self): if hasattr(self, "old_stdout"): os.close(self.old_stdout) os.close(self.old_stderr) self.old_stdout = os.dup(1) self.old_stderr = os.dup(2) os.dup2(self.logfd, 1) os.dup2(self.logfd, 2) def _stopAptResolverLog(self): os.fsync(1) os.fsync(2) os.dup2(self.old_stdout, 1) os.dup2(self.old_stderr, 2) # use this decorator instead of the _start/_stop stuff directly # FIXME: this should probably be a decorator class where all # logging is moved into? def withResolverLog(f): " decorator to ensure that the apt output is logged " def wrapper(*args, **kwargs): args[0]._startAptResolverLog() res = f(*args, **kwargs) args[0]._stopAptResolverLog() return res return wrapper # properties @property def required_download(self): """ get the size of the packages that are required to download """ pm = apt_pkg.PackageManager(self._depcache) fetcher = apt_pkg.Acquire() pm.get_archives(fetcher, self._list, self._records) return fetcher.fetch_needed @property def additional_required_space(self): """ get the size of the additional required space on the fs """ return self._depcache.usr_size @property def additional_required_space_for_snaps(self): """ get the extra size needed to install the snap replacements """ try: # update-manager uses DistUpgradeCache.MyCache as the base class # of its own MyCache version - but without actually calling our # constructor at all. This causes that the MyCache version from # update-manager has no self.quirks attribute while still calling # our default version of checkFreeSpace(). Since extra_snap_space # is only used on dist-upgrades, let's just not care and return 0 # in this weird, undocumented case. return self.quirks.extra_snap_space except AttributeError: return 0 @property def is_broken(self): """ is the cache broken """ return self._depcache.broken_count > 0 # methods def lock_lists_dir(self): name = apt_pkg.config.find_dir("Dir::State::Lists") + "lock" self._listsLock = apt_pkg.get_lock(name) if self._listsLock < 0: e = "Can not lock '%s' " % name raise CacheExceptionLockingFailed(e) def unlock_lists_dir(self): if self._listsLock > 0: os.close(self._listsLock) self._listsLock = -1 def update(self, fprogress=None): """ our own update implementation is required because we keep the lists dir lock """ self.unlock_lists_dir() res = apt.Cache.update(self, fprogress) self.lock_lists_dir() if fprogress and fprogress.release_file_download_error: # FIXME: not ideal error message, but we just reuse a # existing one here to avoid a new string raise IOError(_("The server may be overloaded")) if res == False: raise IOError("apt.cache.update() returned False, but did not raise exception?!?") def commit(self, fprogress, iprogress): logging.info("cache.commit()") if self.lock: self.release_lock() apt.Cache.commit(self, fprogress, iprogress) def release_lock(self, pkgSystemOnly=True): if self.lock: try: apt_pkg.pkgsystem_unlock() self.lock = False except SystemError as e: logging.debug("failed to SystemUnLock() (%s) " % e) def get_lock(self, pkgSystemOnly=True): if not self.lock: try: apt_pkg.pkgsystem_lock() self.lock = True except SystemError as e: logging.debug("failed to SystemLock() (%s) " % e) def downloadable(self, pkg, useCandidate=True): " check if the given pkg can be downloaded " if useCandidate: ver = self._depcache.get_candidate_ver(pkg._pkg) else: ver = pkg._pkg.current_ver if ver == None: logging.warning("no version information for '%s' (useCandidate=%s)" % (pkg.name, useCandidate)) return False return ver.downloadable def pkg_auto_removable(self, pkg): """ check if the pkg is auto-removable """ return (pkg.is_installed and self._depcache.is_garbage(pkg._pkg)) def fix_broken(self): """ try to fix broken dependencies on the system, may throw SystemError when it can't""" return self._depcache.fix_broken() def create_snapshot(self): """ create a snapshot of the current changes """ self.to_install = [] self.to_remove = [] for pkg in self.get_changes(): if pkg.marked_install or pkg.marked_upgrade: self.to_install.append(pkg.name) if pkg.marked_delete: self.to_remove.append(pkg.name) def clear(self): self._depcache.init() def restore_snapshot(self): """ restore a snapshot """ actiongroup = apt_pkg.ActionGroup(self._depcache) # just make pyflakes shut up, later we need to use # with self.actiongroup(): actiongroup self.clear() for name in self.to_remove: pkg = self[name] pkg.mark_delete() for name in self.to_install: pkg = self[name] pkg.mark_install(auto_fix=False, auto_inst=False) def need_server_mode(self): """ This checks if we run on a desktop or a server install. A server install has more freedoms, for a desktop install we force a desktop meta package to be install on the upgrade. We look for a installed desktop meta pkg and for key dependencies, if none of those are installed we assume server mode """ #logging.debug("need_server_mode() run") # check for the MetaPkgs (e.g. ubuntu-desktop) metapkgs = self.config.getlist("Distro", "MetaPkgs") for key in metapkgs: # if it is installed we are done if key in self and self[key].is_installed: logging.debug("need_server_mode(): run in 'desktop' mode, (because of pkg '%s')" % key) return False # if it is not installed, but its key depends are installed # we are done too (we auto-select the package later) deps_found = True for pkg in self.config.getlist(key, "KeyDependencies"): deps_found &= pkg in self and self[pkg].is_installed if deps_found: logging.debug("need_server_mode(): run in 'desktop' mode, (because of key deps for '%s')" % key) return False logging.debug("need_server_mode(): can not find a desktop meta package or key deps, running in server mode") return True def coherence_check(self, view): """ check if the cache is ok and if the required metapkgs are installed """ if self.is_broken: try: logging.debug("Have broken pkgs, trying to fix them") self.fix_broken() except SystemError: view.error(_("Broken packages"), _("Your system contains broken packages " "that couldn't be fixed with this " "software. " "Please fix them first using synaptic or " "apt-get before proceeding.")) return False return True def mark_install(self, pkg, reason="", **flags): logging.debug("Installing '%s' (%s)" % (pkg, reason)) if pkg in self: self[pkg].mark_install(**flags) if not (self[pkg].marked_install or self[pkg].marked_upgrade): logging.error("Installing/upgrading '%s' failed" % pkg) #raise SystemError("Installing '%s' failed" % pkg) return False return True def mark_upgrade(self, pkg, reason=""): logging.debug("Upgrading '%s' (%s)" % (pkg, reason)) if pkg in self and self[pkg].is_installed: self[pkg].mark_upgrade() if not self[pkg].marked_upgrade: logging.error("Upgrading '%s' failed" % pkg) return False return True def mark_remove(self, pkg, reason="", **flags): logging.debug("Removing '%s' (%s)" % (pkg, reason)) if pkg in self: self[pkg].mark_delete(**flags) def mark_purge(self, pkg, reason=""): logging.debug("Purging '%s' (%s)" % (pkg, reason)) if pkg in self: self._depcache.mark_delete(self[pkg]._pkg, True) def _keep_installed(self, pkgname, reason): if (pkgname in self and self[pkgname].is_installed and self[pkgname].marked_delete): self.mark_install(pkgname, reason) def keep_installed_rule(self): """ run after the dist-upgrade to ensure that certain packages are kept installed """ # first the global list for pkgname in self.config.getlist("Distro", "KeepInstalledPkgs"): self._keep_installed(pkgname, "Distro KeepInstalledPkgs rule") # the the per-metapkg rules for key in self.metapkgs: if key in self and (self[key].is_installed or self[key].marked_install): for pkgname in self.config.getlist(key, "KeepInstalledPkgs"): self._keep_installed(pkgname, "%s KeepInstalledPkgs rule" % key) # only enforce section if we have a network. Otherwise we run # into CD upgrade issues for installed language packs etc if self.config.get("Options", "withNetwork") == "True": logging.debug("Running KeepInstalledSection rules") # now the KeepInstalledSection code for section in self.config.getlist("Distro", "KeepInstalledSection"): for pkg in self: if (pkg.candidate and pkg.candidate.downloadable and pkg.marked_delete and pkg.candidate.section == section): self._keep_installed(pkg.name, "Distro KeepInstalledSection rule: %s" % section) for key in self.metapkgs: if key in self and (self[key].is_installed or self[key].marked_install): for section in self.config.getlist(key, "KeepInstalledSection"): for pkg in self: if (pkg.candidate and pkg.candidate.downloadable and pkg.marked_delete and pkg.candidate.section == section): self._keep_installed(pkg.name, "%s KeepInstalledSection rule: %s" % (key, section)) def pre_upgrade_rule(self): " run before the upgrade was done in the cache " # run the quirks handlers if not self.partialUpgrade: self.quirks.run("PreDistUpgradeCache") def post_upgrade_rule(self): " run after the upgrade was done in the cache " for (rule, action) in [("Install", self.mark_install), ("Upgrade", self.mark_upgrade), ("Remove", self.mark_remove), ("Purge", self.mark_purge)]: # first the global list for pkg in self.config.getlist("Distro", "PostUpgrade%s" % rule): action(pkg, "Distro PostUpgrade%s rule" % rule) for key in self.metapkgs: if key in self and (self[key].is_installed or self[key].marked_install): for pkg in self.config.getlist(key, "PostUpgrade%s" % rule): action(pkg, "%s PostUpgrade%s rule" % (key, rule)) # run the quirks handlers if not self.partialUpgrade: self.quirks.run("PostDistUpgradeCache") def checkForNvidia(self): """ this checks for nvidia hardware and checks what driver is needed """ logging.debug("nvidiaUpdate()") # if the free drivers would give us a equally hard time, we would # never be able to release try: from NvidiaDetector.nvidiadetector import NvidiaDetection except (ImportError, SyntaxError) as e: # SyntaxError is temporary until the port of NvidiaDetector to # Python 3 is in the archive. logging.error("NvidiaDetector can not be imported %s" % e) return False try: # get new detection module and use the modalises files # from within the release-upgrader nv = NvidiaDetection(obsolete="./ubuntu-drivers-obsolete.pkgs") #nv = NvidiaDetection() # check if a binary driver is installed now for oldDriver in nv.oldPackages: if oldDriver in self and self[oldDriver].is_installed: self.mark_remove(oldDriver, "old nvidia driver") break else: logging.info("no old nvidia driver installed, installing no new") return False # check which one to use driver = nv.selectDriver() logging.debug("nv.selectDriver() returned '%s'" % driver) if not driver in self: logging.warning("no '%s' found" % driver) return False if not (self[driver].marked_install or self[driver].marked_upgrade): self[driver].mark_install() logging.info("installing %s as suggested by NvidiaDetector" % driver) return True except Exception as e: logging.error("NvidiaDetection returned a error: %s" % e) return False def _has_kernel_headers_installed(self): for pkg in self: if (pkg.name.startswith("linux-headers-") and pkg.is_installed): return True return False def checkForKernel(self): """ check for the running kernel and try to ensure that we have an updated version """ logging.debug("Kernel uname: '%s' " % self.uname) try: (version, build, flavour) = self.uname.split("-") except Exception as e: logging.warning("Can't parse kernel uname: '%s' (self compiled?)" % e) return False # now check if we have a SMP system dmesg = Popen(["dmesg"], stdout=PIPE).communicate()[0] if b"WARNING: NR_CPUS limit" in dmesg: logging.debug("UP kernel on SMP system!?!") return True def checkPriority(self): # tuple of priorities we require to be installed need = ('required', ) # stuff that its ok not to have removeEssentialOk = self.config.getlist("Distro", "RemoveEssentialOk") # check now for pkg in self: # WORKAROUND bug on the CD/python-apt #253255 ver = pkg._pcache._depcache.get_candidate_ver(pkg._pkg) if ver and ver.priority == 0: logging.error("Package %s has no priority set" % pkg.name) continue if (pkg.candidate and pkg.candidate.downloadable and not (pkg.is_installed or pkg.marked_install) and not pkg.name in removeEssentialOk and # ignore multiarch priority required packages not ":" in pkg.name and pkg.candidate.priority in need): self.mark_install(pkg.name, "priority in required set '%s' but not scheduled for install" % need) # FIXME: make this a decorator (just like the withResolverLog()) def updateGUI(self, view, lock): i = 0 while lock.locked(): if i % 15 == 0: view.pulseProgress() view.processEvents() time.sleep(0.02) i += 1 view.pulseProgress(finished=True) view.processEvents() @withResolverLog def distUpgrade(self, view, serverMode, partialUpgrade): # keep the GUI alive lock = threading.Lock() lock.acquire() t = threading.Thread(target=self.updateGUI, args=(self.view, lock,)) t.start() try: # mvo: disabled as it casues to many errornous installs #self._apply_dselect_upgrade() # run PreDistUpgradeCache quirks self.pre_upgrade_rule() # upgrade (and make sure this way that the cache is ok) self.upgrade(True) # check that everything in priority required is installed self.checkPriority() # see if our KeepInstalled rules are honored self.keep_installed_rule() # check if we got a new kernel (if we are not inside a # chroot) if inside_chroot(): logging.warning("skipping kernel checks because we run inside a chroot") else: self.checkForKernel() # check for nvidia stuff self.checkForNvidia() # and if we have some special rules self.post_upgrade_rule() # install missing meta-packages (if not in server upgrade mode) self._keepBaseMetaPkgsInstalled(view) if not serverMode: # if this fails, a system error is raised self._installMetaPkgs(view) # see if it all makes sense, if not this function raises self._verifyChanges() if self.is_broken: raise SystemError(_("Broken packages after upgrade: %s") % ", ".join(p.name for p in self if p.is_inst_broken or p.is_now_broken)) except SystemError as e: # the most likely problem is the 3rd party pkgs so don't address # foreignPkgs and devRelease being True details = _("An unresolvable problem occurred while " "calculating the upgrade.\n\n ") if self.config.get("Options", "foreignPkgs") == "True": details += _("This was likely caused by:\n" " * Unofficial software packages not provided by Ubuntu\n" "Please use the tool 'ppa-purge' from the ppa-purge \n" "package to remove software from a Launchpad PPA and \n" "try the upgrade again.\n" "\n") elif self.config.get("Options", "foreignPkgs") == "False" and \ self.config.get("Options", "devRelease") == "True": details += _("This was caused by:\n" " * Upgrading to a pre-release version of Ubuntu\n" "This is most likely a transient problem, \n" "please try again later.\n") # we never have partialUpgrades (including removes) on a stable system # with only ubuntu sources so we do not recommend reporting a bug if partialUpgrade: details += _("This is most likely a transient problem, " "please try again later.") else: details += _("If none of this applies, then please report this bug using " "the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. ") details += _("If you want to investigate this yourself the log files in " "'/var/log/dist-upgrade' will contain details about the upgrade. " "Specifically, look at 'main.log' and 'apt.log'.") # make the error text available again on stdout for the # text frontend self._stopAptResolverLog() view.error(_("Could not calculate the upgrade"), details) # may contain utf-8 (LP: #1310053) error_msg = str(e) logging.error("Dist-upgrade failed: '%s'", error_msg) # start the resolver log again because this is run with # the withResolverLog decorator self._startAptResolverLog() return False finally: # wait for the gui-update thread to exit lock.release() t.join() # check the trust of the packages that are going to change untrusted = [] downgrade = [] for pkg in self.get_changes(): if pkg.marked_delete: continue # special case because of a bug in pkg.candidate.origins if pkg.marked_downgrade: downgrade.append(pkg.name) for ver in pkg._pkg.version_list: # version is lower than installed one if apt_pkg.version_compare( ver.ver_str, pkg.installed.version) < 0: for (verFileIter, index) in ver.file_list: indexfile = pkg._pcache._list.find_index(verFileIter) if indexfile and not indexfile.is_trusted: untrusted.append(pkg.name) break continue origins = pkg.candidate.origins trusted = False for origin in origins: #print(origin) trusted |= origin.trusted if not trusted: untrusted.append(pkg.name) # check if the user overwrote the unauthenticated warning try: b = self.config.getboolean("Distro", "AllowUnauthenticated") if b: logging.warning("AllowUnauthenticated set!") return True except configparser.NoOptionError: pass if len(downgrade) > 0: downgrade.sort() logging.error("Packages to downgrade found: '%s'" % " ".join(downgrade)) if len(untrusted) > 0: untrusted.sort() logging.error("Unauthenticated packages found: '%s'" % " ".join(untrusted)) # FIXME: maybe ask a question here? instead of failing? self._stopAptResolverLog() view.error(_("Error authenticating some packages"), _("It was not possible to authenticate some " "packages. This may be a transient network problem. " "You may want to try again later. See below for a " "list of unauthenticated packages."), "\n".join(untrusted)) # start the resolver log again because this is run with # the withResolverLog decorator self._startAptResolverLog() return False return True def _verifyChanges(self): """ this function tests if the current changes don't violate our constraints (deny listed removals etc) """ main_arch = apt_pkg.config.find("APT::Architecture") removeEssentialOk = self.config.getlist("Distro", "RemoveEssentialOk") # check changes for pkg in self.get_changes(): if pkg.marked_delete and self._inRemovalDenylist(pkg.name): logging.debug("The package '%s' is marked for removal but it's in the removal deny list", pkg.name) raise SystemError(_("The package '%s' is marked for removal but it is in the removal deny list.") % pkg.name) if pkg.marked_delete and ( pkg._pkg.essential == True and pkg.installed.architecture in (main_arch, "all") and not pkg.name in removeEssentialOk): logging.debug("The package '%s' is marked for removal but it's an ESSENTIAL package", pkg.name) raise SystemError(_("The essential package '%s' is marked for removal.") % pkg.name) # check bad-versions deny list badVersions = self.config.getlist("Distro", "BadVersions") for bv in badVersions: (pkgname, ver) = bv.split("_") if (pkgname in self and self[pkgname].candidate and self[pkgname].candidate.version == ver and (self[pkgname].marked_install or self[pkgname].marked_upgrade)): raise SystemError(_("Trying to install deny listed version '%s'") % bv) return True def _lookupPkgRecord(self, pkg): """ helper to make sure that the pkg._records is pointing to the right location - needed because python-apt 0.7.9 dropped the python-apt version but we can not yet use the new version because on upgrade the old version is still installed """ ver = pkg._pcache._depcache.get_candidate_ver(pkg._pkg) if ver is None: print("No candidate ver: ", pkg.name) return False if ver.file_list is None: print("No file_list for: %s " % self._pkg.name()) return False f, index = ver.file_list.pop(0) pkg._pcache._records.lookup((f, index)) return True @property def installedTasks(self): tasks = {} installed_tasks = set() for pkg in self: if not self._lookupPkgRecord(pkg): logging.debug("no PkgRecord found for '%s', skipping " % pkg.name) continue for line in pkg._pcache._records.record.split("\n"): if line.startswith("Task:"): for task in (line[len("Task:"):]).split(","): task = task.strip() if task not in tasks: tasks[task] = set() tasks[task].add(pkg.name) for task in tasks: installed = True ignored_tasks = self.config.getlist("Distro", "IgnoredTasks") if task in ignored_tasks: installed = False for pkgname in tasks[task]: if not self[pkgname].is_installed: installed = False break if installed: installed_tasks.add(task) return installed_tasks def installTasks(self, tasks): logging.debug("running installTasks") for pkg in self: if pkg.marked_install or pkg.is_installed: continue self._lookupPkgRecord(pkg) if not (hasattr(pkg._pcache._records, "record") and pkg._pcache._records.record): logging.warning("can not find Record for '%s'" % pkg.name) continue for line in pkg._pcache._records.record.split("\n"): if line.startswith("Task:"): for task in (line[len("Task:"):]).split(","): task = task.strip() if task in tasks: pkg.mark_install() return True def _keepBaseMetaPkgsInstalled(self, view): for pkg in self.config.getlist("Distro", "BaseMetaPkgs"): self._keep_installed(pkg, "base meta package keep installed rule") def _installMetaPkgs(self, view): def metaPkgInstalled(): """ internal helper that checks if at least one meta-pkg is installed or marked install """ for key in metapkgs: if key in self: pkg = self[key] if pkg.is_installed and pkg.marked_delete: logging.debug("metapkg '%s' installed but marked_delete" % pkg.name) if ((pkg.is_installed and not pkg.marked_delete) or self[key].marked_install): return True return False # now check for ubuntu-desktop, kubuntu-desktop, edubuntu-desktop metapkgs = self.config.getlist("Distro", "MetaPkgs") # we never go without ubuntu-base for pkg in self.config.getlist("Distro", "BaseMetaPkgs"): self[pkg].mark_install() # every meta-pkg that is installed currently, will be marked # install (that result in a upgrade and removes a mark_delete) for key in metapkgs: try: if (key in self and self[key].is_installed and self[key].is_upgradable): logging.debug("Marking '%s' for upgrade" % key) self[key].mark_upgrade() except SystemError as e: # warn here, but don't fail, its possible that meta-packages # conflict (like ubuntu-desktop vs xubuntu-desktop) LP: #775411 logging.warning("Can't mark '%s' for upgrade (%s)" % (key, e)) # check if we have a meta-pkg, if not, try to guess which one to pick if not metaPkgInstalled(): logging.debug("none of the '%s' meta-pkgs installed" % metapkgs) for key in metapkgs: deps_found = True for pkg in self.config.getlist(key, "KeyDependencies"): deps_found &= pkg in self and self[pkg].is_installed if deps_found: logging.debug("guessing '%s' as missing meta-pkg" % key) try: self[key].mark_install() except (SystemError, KeyError) as e: logging.error("failed to mark '%s' for install (%s)" % (key, e)) view.error(_("Can't install '%s'") % key, _("It was impossible to install a " "required package. Please report " "this as a bug using " "'ubuntu-bug ubuntu-release-upgrader-core' in " "a terminal.")) return False logging.debug("marked_install: '%s' -> '%s'" % (key, self[key].marked_install)) break # check if we actually found one if not metaPkgInstalled(): meta_pkgs = ', '.join(metapkgs[0:-1]) view.error(_("Can't guess meta-package"), _("Your system does not contain a " "%s or %s package and it was not " "possible to detect which version of " "Ubuntu you are running.\n " "Please install one of the packages " "above first using synaptic or " "apt-get before proceeding.") % (meta_pkgs, metapkgs[-1])) return False return True def _inRemovalDenylist(self, pkgname): for expr in self.removal_denylist: if re.compile(expr).match(pkgname): logging.debug("denylist expr '%s' matches '%s'" % (expr, pkgname)) return True return False @withResolverLog def tryMarkObsoleteForRemoval(self, pkgname, remove_candidates, forced_obsoletes, foreign_pkgs): #logging.debug("tryMarkObsoleteForRemoval(): %s" % pkgname) # coherence check, first see if it looks like a running kernel pkg if pkgname.endswith(self.uname): logging.debug("skipping running kernel pkg '%s'" % pkgname) return False if pkgname == self.linux_metapackage: logging.debug("skipping kernel metapackage '%s'" % pkgname) return False if self._inRemovalDenylist(pkgname): logging.debug("skipping '%s' (in removalDenylist)" % pkgname) return False # ensure we honor KeepInstalledSection here as well for section in self.config.getlist("Distro", "KeepInstalledSection"): if (pkgname in self and self[pkgname].installed and self[pkgname].installed.section == section): logging.debug("skipping '%s' (in KeepInstalledSection)" % pkgname) return False # if we don't have the package anyway, we are fine (this can # happen when forced_obsoletes are specified in the config file) if pkgname not in self: #logging.debug("package '%s' not in cache" % pkgname) return True # check if we want to purge try: purge = self.config.getboolean("Distro", "PurgeObsoletes") except configparser.NoOptionError: purge = False # if this package has not been forced obsolete, only # delete it if it doesn't remove other dependents # that are not obsolete as well actiongroup = apt_pkg.ActionGroup(self._depcache) # just make pyflakes shut up, later we should use # with self.actiongroup(): actiongroup self.create_snapshot() try: self[pkgname].mark_delete(purge=purge) self.view.processEvents() if pkgname in forced_obsoletes: return True #logging.debug("marking '%s' for removal" % pkgname) for pkg in self.get_changes(): if (pkg.name not in remove_candidates or pkg.name in foreign_pkgs or self._inRemovalDenylist(pkg.name) or pkg.name == self.linux_metapackage): logging.debug("package '%s' produces an unwanted removal '%s', skipping" % (pkgname, pkg.name)) self.restore_snapshot() return False except (SystemError, KeyError) as e: logging.warning("_tryMarkObsoleteForRemoval failed for '%s' (%s: %s)" % (pkgname, repr(e), e)) self.restore_snapshot() return False return True def _getObsoletesPkgs(self): " get all package names that are not downloadable " obsolete_pkgs = set() for pkg in self: if pkg.is_installed: # check if any version is downloadable. we need to check # for older ones too, because there might be # cases where e.g. firefox in gutsy-updates is newer # than hardy if not self.anyVersionDownloadable(pkg): obsolete_pkgs.add(pkg.name) return obsolete_pkgs def anyVersionDownloadable(self, pkg): " helper that checks if any of the version of pkg is downloadable " for ver in pkg._pkg.version_list: if ver.downloadable: return True return False def _getUnusedDependencies(self): " get all package names that are not downloadable " unused_dependencies = set() for pkg in self: if pkg.is_installed and self._depcache.is_garbage(pkg._pkg): unused_dependencies.add(pkg.name) return unused_dependencies def get_installed_demoted_packages(self): """ return list of installed and demoted packages If a demoted package is a automatic install it will be skipped """ demotions = set() demotions_file = self.config.get("Distro", "Demotions") if os.path.exists(demotions_file): with open(demotions_file) as demotions_f: for line in demotions_f: if not line.startswith("#"): demotions.add(line.strip()) installed_demotions = set() for demoted_pkgname in demotions: if demoted_pkgname not in self: continue pkg = self[demoted_pkgname] if (not pkg.is_installed or self._depcache.is_auto_installed(pkg._pkg) or pkg.marked_delete): continue installed_demotions.add(pkg) return list(installed_demotions) def _getForeignPkgs(self, allowed_origin, fromDist, toDist): """ get all packages that are installed from a foreign repo (and are actually downloadable) """ foreign_pkgs = set() for pkg in self: if pkg.is_installed and self.downloadable(pkg): if not pkg.candidate: continue # assume it is foreign and see if it is from the # official archive foreign = True for origin in pkg.candidate.origins: # FIXME: use some better metric here if fromDist in origin.archive and \ origin.origin == allowed_origin: foreign = False if toDist in origin.archive and \ origin.origin == allowed_origin: foreign = False if foreign: foreign_pkgs.add(pkg.name) return foreign_pkgs def checkFreeSpace(self, snapshots_in_use=False): """ this checks if we have enough free space on /var, /boot and /usr with the given cache Note: this can not be fully accurate if there are multiple mountpoints for /usr, /var, /boot """ class FreeSpace(object): " helper class that represents the free space on each mounted fs " def __init__(self, initialFree): self.free = initialFree self.need = 0 def make_fs_id(d): """ return 'id' of a directory so that directories on the same filesystem get the same id (simply the mount_point) """ for mount_point in mounted: if d.startswith(mount_point): return mount_point return "/" # this is all a bit complicated # 1) check what is mounted (in mounted) # 2) create FreeSpace objects for the dirs we are interested in # (mnt_map) # 3) use the mnt_map to check if we have enough free space and # if not tell the user how much is missing mounted = [] mnt_map = {} fs_free = {} with open("/proc/mounts") as mounts: for line in mounts: try: (what, where, fs, options, a, b) = line.split() except ValueError as e: logging.debug("line '%s' in /proc/mounts not understood (%s)" % (line, e)) continue if not where in mounted: mounted.append(where) # make sure mounted is sorted by longest path mounted.sort(key=len, reverse=True) archivedir = apt_pkg.config.find_dir("Dir::Cache::archives") aufs_rw_dir = "/tmp/" if (hasattr(self, "config") and self.config.getWithDefault("Aufs", "Enabled", False)): aufs_rw_dir = self.config.get("Aufs", "RWDir") if not os.path.exists(aufs_rw_dir): os.makedirs(aufs_rw_dir) logging.debug("cache aufs_rw_dir: %s" % aufs_rw_dir) for d in ["/", "/usr", "/var", "/boot", archivedir, aufs_rw_dir, "/home", "/tmp/"]: d = os.path.realpath(d) fs_id = make_fs_id(d) if os.path.exists(d): st = os.statvfs(d) free = st.f_bavail * st.f_frsize else: logging.warning("directory '%s' does not exists" % d) free = 0 if fs_id in mnt_map: logging.debug("Dir %s mounted on %s" % (d, mnt_map[fs_id])) fs_free[d] = fs_free[mnt_map[fs_id]] else: logging.debug("Free space on %s: %s" % (d, free)) mnt_map[fs_id] = d fs_free[d] = FreeSpace(free) del mnt_map logging.debug("fs_free contains: '%s'" % fs_free) # now calculate the space that is required on /boot # we do this by checking how many linux-image-$ver packages # are installed or going to be installed kernel_count = 0 for pkg in self: # we match against everything that looks like a kernel # and add space check to filter out metapackages if re.match("^linux-(image|image-debug)-[0-9.]*-.*", pkg.name): # upgrade because early in the release cycle the major version # may be the same or they might be -lts- kernels if pkg.marked_install or pkg.marked_upgrade: logging.debug("%s (new-install) added with %s to boot space" % (pkg.name, KERNEL_SIZE)) kernel_count += 1 # space calculated per LP: #1646222 space_in_boot = (kernel_count * KERNEL_SIZE + (kernel_count + 1) * INITRD_SIZE) # we check for various sizes: # archivedir is where we download the debs # /usr is assumed to get *all* of the install space (incorrect, # but as good as we can do currently + safety buffer # / has a small safety buffer as well required_for_aufs = 0.0 if (hasattr(self, "config") and self.config.getWithDefault("Aufs", "Enabled", False)): logging.debug("taking aufs overlay into space calculation") aufs_rw_dir = self.config.get("Aufs", "RWDir") # if we use the aufs rw overlay all the space is consumed # the overlay dir for pkg in self: if pkg.marked_upgrade or pkg.marked_install: required_for_aufs += pkg.candidate.installed_size # add old size of the package if we use snapshots required_for_snapshots = 0.0 if snapshots_in_use: for pkg in self: if (pkg.is_installed and (pkg.marked_upgrade or pkg.marked_delete)): required_for_snapshots += pkg.installed.installed_size logging.debug("additional space for the snapshots: %s" % required_for_snapshots) # sum up space requirements for (dir, size) in [(archivedir, self.required_download), ("/usr", self.additional_required_space), # this is only >0 for the deb-to-snap quirks ("/var", self.additional_required_space_for_snaps), # plus 50M safety buffer in /usr ("/usr", 50*1024*1024), ("/boot", space_in_boot), ("/tmp", 5*1024*1024), # /tmp for dkms LP: #427035 ("/", 10*1024*1024), # small safety buffer / (aufs_rw_dir, required_for_aufs), # if snapshots are in use ("/usr", required_for_snapshots), ]: # we are ensuring we have more than enough free space not less if size < 0: continue dir = os.path.realpath(dir) logging.debug("dir '%s' needs '%s' of '%s' (%f)" % (dir, size, fs_free[dir], fs_free[dir].free)) fs_free[dir].free -= size fs_free[dir].need += size # check for space required violations required_list = {} for dir in fs_free: if fs_free[dir].free < 0: # ensure unicode here (LP: #1172740) free_at_least = apt_pkg.size_to_str(float(abs(fs_free[dir].free)+1)) if isinstance(free_at_least, bytes): free_at_least = free_at_least.decode( locale.getpreferredencoding()) free_needed = apt_pkg.size_to_str(fs_free[dir].need) if isinstance(free_needed, bytes): free_needed = free_needed.decode( locale.getpreferredencoding()) # make_fs_id ensures we only get stuff on the same # mountpoint, so we report the requirements only once # per mountpoint required_list[make_fs_id(dir)] = FreeSpaceRequired(free_needed, make_fs_id(dir), free_at_least) # raise exception if free space check fails if len(required_list) > 0: logging.error("Not enough free space: %s" % [str(i) for i in required_list]) raise NotEnoughFreeSpaceError(list(required_list.values())) return True if __name__ == "__main__": import sys from .DistUpgradeConfigParser import DistUpgradeConfig from .DistUpgradeView import DistUpgradeView print("foo") c = MyCache(DistUpgradeConfig("."), DistUpgradeView(), None) #c.checkForNvidia() #print(c._identifyObsoleteKernels()) print(c.checkFreeSpace()) sys.exit() c.clear() c.create_snapshot() c.installedTasks c.installTasks(["ubuntu-desktop"]) print(c.get_changes()) c.restore_snapshot()
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