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# -*- coding: utf-8 -*-
#
# Copyright (c) 2015-2020 Red Hat, Inc.
#
# 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, see <http://www.gnu.org/licenses/>.
#
# Author(s): Will Woods <wwoods@redhat.com>
"""system_upgrade.py - DNF plugin to handle major-version system upgrades."""
from subprocess import call, Popen, check_output, CalledProcessError
import json
import os
import os.path
import re
import sys
import uuid
from systemd import journal
from dnfpluginscore import _, logger
import dnf
import dnf.cli
from dnf.cli import CliError
from dnf.i18n import ucd
import dnf.transaction
from dnf.transaction_sr import serialize_transaction, TransactionReplay
import libdnf.conf
# Translators: This string is only used in unit tests.
_("the color of the sky")
DOWNLOAD_FINISHED_ID = uuid.UUID('9348174c5cc74001a71ef26bd79d302e')
REBOOT_REQUESTED_ID = uuid.UUID('fef1cc509d5047268b83a3a553f54b43')
UPGRADE_STARTED_ID = uuid.UUID('3e0a5636d16b4ca4bbe5321d06c6aa62')
UPGRADE_FINISHED_ID = uuid.UUID('8cec00a1566f4d3594f116450395f06c')
ID_TO_IDENTIFY_BOOTS = UPGRADE_STARTED_ID
PLYMOUTH = '/usr/bin/plymouth'
RELEASEVER_MSG = _(
"Need a --releasever greater than the current system version.")
DOWNLOAD_FINISHED_MSG = _( # Translators: do not change "reboot" here
"Download complete! Use 'dnf {command} reboot' to start the upgrade.\n"
"To remove cached metadata and transaction use 'dnf {command} clean'")
CANT_RESET_RELEASEVER = _(
"Sorry, you need to use 'download --releasever' instead of '--network'")
STATE_VERSION = 3
# --- Miscellaneous helper functions ------------------------------------------
def reboot(poweroff = False):
if os.getenv("DNF_SYSTEM_UPGRADE_NO_REBOOT", default=False):
logger.info(_("Reboot turned off, not rebooting."))
else:
if poweroff:
Popen(["systemctl", "poweroff"])
else:
Popen(["systemctl", "reboot"])
def get_url_from_os_release():
key = "UPGRADE_GUIDE_URL="
for path in ["/etc/os-release", "/usr/lib/os-release"]:
try:
with open(path) as release_file:
for line in release_file:
line = line.strip()
if line.startswith(key):
return line[len(key):].strip('"')
except IOError:
continue
return None
# DNF-FIXME: dnf.util.clear_dir() doesn't delete regular files :/
def clear_dir(path, ignore=[]):
if not os.path.isdir(path):
return
for entry in os.listdir(path):
fullpath = os.path.join(path, entry)
if fullpath in ignore:
continue
try:
if os.path.isdir(fullpath):
dnf.util.rm_rf(fullpath)
else:
os.unlink(fullpath)
except OSError:
pass
def check_release_ver(conf, target=None):
if dnf.rpm.detect_releasever(conf.installroot) == conf.releasever:
raise CliError(RELEASEVER_MSG)
if target and target != conf.releasever:
# it's too late to set releasever here, so this can't work.
# (see https://bugzilla.redhat.com/show_bug.cgi?id=1212341)
raise CliError(CANT_RESET_RELEASEVER)
def disable_blanking():
try:
tty = open('/dev/tty0', 'wb')
tty.write(b'\33[9;0]')
except Exception as e:
print(_("Screen blanking can't be disabled: %s") % e)
# --- State object - for tracking upgrade state between runs ------------------
# DNF-INTEGRATION-NOTE: basically the same thing as dnf.persistor.JSONDB
class State(object):
def __init__(self, statefile):
self.statefile = statefile
self._data = {}
self._read()
def _read(self):
try:
with open(self.statefile) as fp:
self._data = json.load(fp)
except IOError:
self._data = {}
except ValueError:
self._data = {}
logger.warning(_("Failed loading state file: %s, continuing with "
"empty state."), self.statefile)
def write(self):
dnf.util.ensure_dir(os.path.dirname(self.statefile))
with open(self.statefile, 'w') as outf:
json.dump(self._data, outf, indent=4, sort_keys=True)
def clear(self):
if os.path.exists(self.statefile):
os.unlink(self.statefile)
self._read()
def __enter__(self):
return self
def __exit__(self, exc_type, exc_value, traceback):
if exc_type is None:
self.write()
# helper function for creating properties. pylint: disable=protected-access
def _prop(option): # pylint: disable=no-self-argument
def setprop(self, value):
self._data[option] = value
def getprop(self):
return self._data.get(option)
return property(getprop, setprop)
# !!! Increase STATE_VERSION for any changes in data structure like a new property or a new
# data structure !!!
state_version = _prop("state_version")
download_status = _prop("download_status")
destdir = _prop("destdir")
target_releasever = _prop("target_releasever")
system_releasever = _prop("system_releasever")
gpgcheck = _prop("gpgcheck")
# list of repos with gpgcheck=True
gpgcheck_repos = _prop("gpgcheck_repos")
# list of repos with repo_gpgcheck=True
repo_gpgcheck_repos = _prop("repo_gpgcheck_repos")
upgrade_status = _prop("upgrade_status")
upgrade_command = _prop("upgrade_command")
distro_sync = _prop("distro_sync")
poweroff_after = _prop("poweroff_after")
enable_disable_repos = _prop("enable_disable_repos")
module_platform_id = _prop("module_platform_id")
# --- Plymouth output helpers -------------------------------------------------
class PlymouthOutput(object):
"""A plymouth output helper class.
Filters duplicate calls, and stops calling the plymouth binary if we
fail to contact it.
"""
def __init__(self):
self.alive = True
self._last_args = dict()
self._last_msg = None
def _plymouth(self, cmd, *args):
dupe_cmd = (args == self._last_args.get(cmd))
if (self.alive and not dupe_cmd) or cmd == '--ping':
try:
self.alive = (call((PLYMOUTH, cmd) + args) == 0)
except OSError:
self.alive = False
self._last_args[cmd] = args
return self.alive
def ping(self):
return self._plymouth("--ping")
def message(self, msg):
if self._last_msg and self._last_msg != msg:
self._plymouth("hide-message", "--text", self._last_msg)
self._last_msg = msg
return self._plymouth("display-message", "--text", msg)
def set_mode(self):
mode = 'updates'
try:
s = check_output([PLYMOUTH, '--help'])
if re.search('--system-upgrade', ucd(s)):
mode = 'system-upgrade'
except (CalledProcessError, OSError):
pass
return self._plymouth("change-mode", "--" + mode)
def progress(self, percent):
return self._plymouth("system-update", "--progress", str(percent))
# A single PlymouthOutput instance for us to use within this module
Plymouth = PlymouthOutput()
# A TransactionProgress class that updates plymouth for us.
class PlymouthTransactionProgress(dnf.callback.TransactionProgress):
# pylint: disable=too-many-arguments
def progress(self, package, action, ti_done, ti_total, ts_done, ts_total):
self._update_plymouth(package, action, ts_done, ts_total)
def _update_plymouth(self, package, action, current, total):
# Prevents quick jumps of progressbar when pretrans scriptlets
# and TRANS_PREPARATION are reported as 1/1
if total == 1:
return
# Verification goes through all the packages again,
# which resets the "current" param value, this prevents
# resetting of the progress bar as well. (Rhbug:1809096)
if action != dnf.callback.PKG_VERIFY:
Plymouth.progress(int(90.0 * current / total))
else:
Plymouth.progress(90 + int(10.0 * current / total))
Plymouth.message(self._fmt_event(package, action, current, total))
def _fmt_event(self, package, action, current, total):
action = dnf.transaction.ACTIONS.get(action, action)
return "[%d/%d] %s %s..." % (current, total, action, package)
# --- journal helpers -------------------------------------------------
def find_boots(message_id):
"""Find all boots with this message id.
Returns the entries of all found boots.
"""
j = journal.Reader()
j.add_match(MESSAGE_ID=message_id.hex, # identify the message
_UID=0) # prevent spoofing of logs
oldboot = None
for entry in j:
boot = entry['_BOOT_ID']
if boot == oldboot:
continue
oldboot = boot
yield entry
def list_logs():
print(_('The following boots appear to contain upgrade logs:'))
n = -1
for n, entry in enumerate(find_boots(ID_TO_IDENTIFY_BOOTS)):
print('{} / {.hex}: {:%Y-%m-%d %H:%M:%S} {}→{}'.format(
n + 1,
entry['_BOOT_ID'],
entry['__REALTIME_TIMESTAMP'],
entry.get('SYSTEM_RELEASEVER', '??'),
entry.get('TARGET_RELEASEVER', '??')))
if n == -1:
print(_('-- no logs were found --'))
def pick_boot(message_id, n):
boots = list(find_boots(message_id))
# Positive indices index all found boots starting with 1 and going forward,
# zero is the current boot, and -1, -2, -3 are previous going backwards.
# This is the same as journalctl.
try:
if n == 0:
raise IndexError
if n > 0:
n -= 1
return boots[n]['_BOOT_ID']
except IndexError:
raise CliError(_("Cannot find logs with this index."))
def show_log(n):
boot_id = pick_boot(ID_TO_IDENTIFY_BOOTS, n)
process = Popen(['journalctl', '--boot', boot_id.hex])
process.wait()
rc = process.returncode
if rc == 1:
raise dnf.exceptions.Error(_("Unable to match systemd journal entry"))
CMDS = ['download', 'clean', 'reboot', 'upgrade', 'log']
# --- The actual Plugin and Command objects! ----------------------------------
class SystemUpgradePlugin(dnf.Plugin):
name = 'system-upgrade'
def __init__(self, base, cli):
super(SystemUpgradePlugin, self).__init__(base, cli)
if cli:
cli.register_command(SystemUpgradeCommand)
cli.register_command(OfflineUpgradeCommand)
cli.register_command(OfflineDistrosyncCommand)
class SystemUpgradeCommand(dnf.cli.Command):
aliases = ('system-upgrade', 'fedup',)
summary = _("Prepare system for upgrade to a new release")
DATADIR = 'var/lib/dnf/system-upgrade'
def __init__(self, cli):
super(SystemUpgradeCommand, self).__init__(cli)
self.datadir = os.path.join(cli.base.conf.installroot, self.DATADIR)
self.transaction_file = os.path.join(self.datadir, 'system-upgrade-transaction.json')
self.magic_symlink = os.path.join(cli.base.conf.installroot, 'system-update')
self.state = State(os.path.join(self.datadir, 'system-upgrade-state.json'))
@staticmethod
def set_argparser(parser):
parser.add_argument("--no-downgrade", dest='distro_sync',
action='store_false',
help=_("keep installed packages if the new "
"release's version is older"))
parser.add_argument('--poweroff', dest='poweroff_after',
action='store_true',
help=_("power off system after the operation "
"is completed"))
parser.add_argument('tid', nargs=1, choices=CMDS,
metavar="[%s]" % "|".join(CMDS))
parser.add_argument('--number', type=int, help=_('which logs to show'))
def log_status(self, message, message_id):
"""Log directly to the journal."""
journal.send(message,
MESSAGE_ID=message_id,
PRIORITY=journal.LOG_NOTICE,
SYSTEM_RELEASEVER=self.state.system_releasever,
TARGET_RELEASEVER=self.state.target_releasever,
DNF_VERSION=dnf.const.VERSION)
def pre_configure(self):
self._call_sub("check")
self._call_sub("pre_configure")
def configure(self):
self._call_sub("configure")
def run(self):
self._call_sub("run")
def run_transaction(self):
self._call_sub("transaction")
def run_resolved(self):
self._call_sub("resolved")
def _call_sub(self, name):
subfunc = getattr(self, name + '_' + self.opts.tid[0], None)
if callable(subfunc):
subfunc()
def _check_state_version(self, command):
if self.state.state_version != STATE_VERSION:
msg = _("Incompatible version of data. Rerun 'dnf {command} download [OPTIONS]'"
"").format(command=command)
raise CliError(msg)
def _set_cachedir(self):
# set download directories from json state file
self.base.conf.cachedir = self.datadir
self.base.conf.destdir = self.state.destdir if self.state.destdir else None
def _get_forward_reverse_pkg_reason_pairs(self):
"""
forward = {repoid:{pkg_nevra: {tsi.action: tsi.reason}}
reverse = {pkg_nevra: {tsi.action: tsi.reason}}
:return: forward, reverse
"""
backward_action = set(dnf.transaction.BACKWARD_ACTIONS + [libdnf.transaction.TransactionItemAction_REINSTALLED])
forward_actions = set(dnf.transaction.FORWARD_ACTIONS)
forward = {}
reverse = {}
for tsi in self.cli.base.transaction:
if tsi.action in forward_actions:
pkg = tsi.pkg
forward.setdefault(pkg.repo.id, {}).setdefault(
str(pkg), {})[tsi.action] = tsi.reason
elif tsi.action in backward_action:
reverse.setdefault(str(tsi.pkg), {})[tsi.action] = tsi.reason
return forward, reverse
# == pre_configure_*: set up action-specific demands ==========================
def pre_configure_download(self):
# only download subcommand accepts --destdir command line option
self.base.conf.cachedir = self.datadir
self.base.conf.destdir = self.opts.destdir if self.opts.destdir else None
if 'offline-distrosync' == self.opts.command and not self.opts.distro_sync:
raise CliError(
_("Command 'offline-distrosync' cannot be used with --no-downgrade option"))
elif 'offline-upgrade' == self.opts.command:
self.opts.distro_sync = False
def pre_configure_reboot(self):
self._set_cachedir()
def pre_configure_upgrade(self):
self._set_cachedir()
if self.state.enable_disable_repos:
self.opts.repos_ed = self.state.enable_disable_repos
self.base.conf.releasever = self.state.target_releasever
def pre_configure_clean(self):
self._set_cachedir()
# == configure_*: set up action-specific demands ==========================
def configure_download(self):
if 'system-upgrade' == self.opts.command or 'fedup' == self.opts.command:
logger.warning(_('WARNING: this operation is not supported on the RHEL distribution. '
'Proceed at your own risk.'))
help_url = get_url_from_os_release()
if help_url:
msg = _('Additional information for System Upgrade: {}')
logger.info(msg.format(ucd(help_url)))
if self.base._promptWanted():
msg = _('Before you continue ensure that your system is fully upgraded by running '
'"dnf --refresh upgrade". Do you want to continue')
if self.base.conf.assumeno or not self.base.output.userconfirm(
msg='{} [y/N]: '.format(msg), defaultyes_msg='{} [Y/n]: '.format(msg)):
logger.error(_("Operation aborted."))
sys.exit(1)
check_release_ver(self.base.conf, target=self.opts.releasever)
elif 'offline-upgrade' == self.opts.command:
self.cli._populate_update_security_filter(self.opts)
self.cli.demands.root_user = True
self.cli.demands.resolving = True
self.cli.demands.available_repos = True
self.cli.demands.sack_activation = True
self.cli.demands.freshest_metadata = True
# We want to do the depsolve / download / transaction-test, but *not*
# run the actual RPM transaction to install the downloaded packages.
# Setting the "test" flag makes the RPM transaction a test transaction,
# so nothing actually gets installed.
# (It also means that we run two test transactions in a row, which is
# kind of silly, but that's something for DNF to fix...)
self.base.conf.tsflags += ["test"]
def configure_reboot(self):
# FUTURE: add a --debug-shell option to enable debug shell:
# systemctl add-wants system-update.target debug-shell.service
self.cli.demands.root_user = True
def configure_upgrade(self):
# same as the download, but offline and non-interactive. so...
self.cli.demands.root_user = True
self.cli.demands.resolving = True
self.cli.demands.available_repos = True
self.cli.demands.sack_activation = True
# use the saved value for --allowerasing, etc.
self.opts.distro_sync = self.state.distro_sync
if self.state.gpgcheck is not None:
self.base.conf.gpgcheck = self.state.gpgcheck
if self.state.gpgcheck_repos is not None:
for repo in self.base.repos.values():
repo.gpgcheck = repo.id in self.state.gpgcheck_repos
if self.state.repo_gpgcheck_repos is not None:
for repo in self.base.repos.values():
repo.repo_gpgcheck = repo.id in self.state.repo_gpgcheck_repos
self.base.conf.module_platform_id = self.state.module_platform_id
# don't try to get new metadata, 'cuz we're offline
self.cli.demands.cacheonly = True
# and don't ask any questions (we confirmed all this beforehand)
self.base.conf.assumeyes = True
self.cli.demands.transaction_display = PlymouthTransactionProgress()
# upgrade operation already removes all element that must be removed. Additional removal
# could trigger unwanted changes in transaction.
self.base.conf.clean_requirements_on_remove = False
self.base.conf.install_weak_deps = False
def configure_clean(self):
self.cli.demands.root_user = True
def configure_log(self):
pass
# == check_*: do any action-specific checks ===============================
def check_reboot(self):
if not self.state.download_status == 'complete':
raise CliError(_("system is not ready for upgrade"))
self._check_state_version(self.opts.command)
if self.state.upgrade_command != self.opts.command:
msg = _("the transaction was not prepared for '{command}'. "
"Rerun 'dnf {command} download [OPTIONS]'").format(command=self.opts.command)
raise CliError(msg)
if os.path.lexists(self.magic_symlink):
raise CliError(_("upgrade is already scheduled"))
dnf.util.ensure_dir(self.datadir)
# FUTURE: checkRPMDBStatus(self.state.download_transaction_id)
def check_upgrade(self):
if not os.path.lexists(self.magic_symlink):
logger.info(_("trigger file does not exist. exiting quietly."))
raise SystemExit(0)
if os.readlink(self.magic_symlink) != self.datadir:
logger.info(_("another upgrade tool is running. exiting quietly."))
raise SystemExit(0)
# Delete symlink ASAP to avoid reboot loops
dnf.yum.misc.unlink_f(self.magic_symlink)
command = self.state.upgrade_command
if not command:
command = self.opts.command
self._check_state_version(command)
if not self.state.upgrade_status == 'ready':
msg = _("use 'dnf {command} reboot' to begin the upgrade").format(command=command)
raise CliError(msg)
# == run_*: run the action/prep the transaction ===========================
def run_prepare(self):
# make the magic symlink
os.symlink(self.datadir, self.magic_symlink)
# set upgrade_status so that the upgrade can run
with self.state as state:
state.upgrade_status = 'ready'
def run_reboot(self):
self.run_prepare()
if not self.opts.tid[0] == "reboot":
return
self.state.poweroff_after = self.opts.poweroff_after
self.log_status(_("Rebooting to perform upgrade."),
REBOOT_REQUESTED_ID)
# Explicit write since __exit__ doesn't seem to get called when rebooting
self.state.write()
reboot()
def run_download(self):
# Mark everything in the world for upgrade/sync
if self.opts.distro_sync:
self.base.distro_sync()
else:
self.base.upgrade_all()
if self.opts.command not in ['offline-upgrade', 'offline-distrosync']:
# Mark all installed groups and environments for upgrade
self.base.read_comps()
installed_groups = [g.id for g in self.base.comps.groups if self.base.history.group.get(g.id)]
if installed_groups:
self.base.env_group_upgrade(installed_groups)
installed_environments = [g.id for g in self.base.comps.environments if self.base.history.env.get(g.id)]
if installed_environments:
self.base.env_group_upgrade(installed_environments)
with self.state as state:
state.download_status = 'downloading'
state.target_releasever = self.base.conf.releasever
state.destdir = self.base.conf.destdir
def run_upgrade(self):
# change the upgrade status (so we can detect crashed upgrades later)
command = ''
with self.state as state:
state.upgrade_status = 'incomplete'
command = state.upgrade_command
if command == 'offline-upgrade':
msg = _("Starting offline upgrade. This will take a while.")
elif command == 'offline-distrosync':
msg = _("Starting offline distrosync. This will take a while.")
else:
msg = _("Starting system upgrade. This will take a while.")
self.log_status(msg, UPGRADE_STARTED_ID)
# reset the splash mode and let the user know we're running
Plymouth.set_mode()
Plymouth.progress(0)
Plymouth.message(msg)
# disable screen blanking
disable_blanking()
self.replay = TransactionReplay(self.base, self.transaction_file)
self.replay.run()
def run_clean(self):
logger.info(_("Cleaning up downloaded data..."))
# Don't delete persistor, it contains paths for downloaded packages
# that are used by dnf during finalizing base to clean them up
clear_dir(self.base.conf.cachedir,
[dnf.persistor.TempfilePersistor(self.base.conf.cachedir).db_path])
with self.state as state:
state.download_status = None
state.state_version = None
state.upgrade_status = None
state.upgrade_command = None
state.destdir = None
def run_log(self):
if self.opts.number:
show_log(self.opts.number)
else:
list_logs()
# == resolved_*: do staff after succesful resolvement =====================
def resolved_upgrade(self):
"""Adjust transaction reasons according to stored values"""
self.replay.post_transaction()
# == transaction_*: do stuff after a successful transaction ===============
def transaction_download(self):
transaction = self.base.history.get_current()
if not transaction.packages():
logger.info(_("The system-upgrade transaction is empty, your system is already up-to-date."))
return
data = serialize_transaction(transaction)
try:
with open(self.transaction_file, "w") as f:
json.dump(data, f, indent=4, sort_keys=True)
f.write("\n")
print(_("Transaction saved to {}.").format(self.transaction_file))
except OSError as e:
raise dnf.cli.CliError(_('Error storing transaction: {}').format(str(e)))
# Okay! Write out the state so the upgrade can use it.
system_ver = dnf.rpm.detect_releasever(self.base.conf.installroot)
with self.state as state:
state.download_status = 'complete'
state.state_version = STATE_VERSION
state.distro_sync = self.opts.distro_sync
state.gpgcheck = self.base.conf.gpgcheck
state.gpgcheck_repos = [
repo.id for repo in self.base.repos.values() if repo.gpgcheck]
state.repo_gpgcheck_repos = [
repo.id for repo in self.base.repos.values() if repo.repo_gpgcheck]
state.system_releasever = system_ver
state.target_releasever = self.base.conf.releasever
state.module_platform_id = self.base.conf.module_platform_id
state.enable_disable_repos = self.opts.repos_ed
state.destdir = self.base.conf.destdir
state.upgrade_command = self.opts.command
msg = DOWNLOAD_FINISHED_MSG.format(command=self.opts.command)
logger.info(msg)
self.log_status(_("Download finished."), DOWNLOAD_FINISHED_ID)
def transaction_upgrade(self):
if self.state.poweroff_after:
upgrade_complete_msg = _("Upgrade complete! Cleaning up and powering off...")
else:
upgrade_complete_msg = _("Upgrade complete! Cleaning up and rebooting...")
Plymouth.message(upgrade_complete_msg)
self.log_status(upgrade_complete_msg, UPGRADE_FINISHED_ID)
self.run_clean()
if self.opts.tid[0] == "upgrade":
reboot(self.state.poweroff_after)
class OfflineUpgradeCommand(SystemUpgradeCommand):
aliases = ('offline-upgrade',)
summary = _("Prepare offline upgrade of the system")
class OfflineDistrosyncCommand(SystemUpgradeCommand):
aliases = ('offline-distrosync',)
summary = _("Prepare offline distrosync of the system")
| .. | |||||
| __pycache__ | |||||
| builddep.py | |||||
| changelog.py | |||||
| config_manager.py | |||||
| copr.py | |||||
| debug.py | |||||
| debuginfo-install.py | |||||
| download.py | |||||
| generate_completion_cache.py | |||||
| groups_manager.py | |||||
| needs_restarting.py | |||||
| post-transaction-actions.py | |||||
| repoclosure.py | |||||
| repodiff.py | |||||
| repograph.py | |||||
| repomanage.py | |||||
| reposync.py | |||||
| spacewalk.py | |||||
| system_upgrade.py | |||||
| versionlock.py |