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#!/usr/bin/python3
# Copyright (c) 2009 Canonical Ltd
#
# AUTHOR:
# Michael Vogt <mvo@ubuntu.com>
#
# unattended-upgrade-shutdown - helper that checks if a
# unattended-upgrade is in progress and waits until it exists
#
# This file is part of unattended-upgrades
#
# unattended-upgrades 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.
#
# unattended-upgrades 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 unattended-upgrades; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import copy
import signal
import sys
import time
import logging
import logging.handlers
import gettext
import subprocess
import os.path
from optparse import OptionParser
from gettext import gettext as _
try:
import apt_pkg
except:
# if there is no python-apt no unattended-upgrades can run so not
# need to stop the shutdown
logging.exception("importing of apt_pkg failed, exiting")
sys.exit(0)
def do_usplash(msg):
if os.path.exists("/sbin/usplash_write"):
logging.debug("Running usplash_write")
subprocess.call(["/sbin/usplash_write", "TEXT", msg])
subprocess.call(["/sbin/usplash_write", "PULSATE"])
def do_plymouth(msg):
if os.path.exists("/bin/plymouth"):
logging.debug("Running plymouth --text")
subprocess.call(["/bin/plymouth", "message", "--text", msg])
def log_msg(msg, level=logging.WARN):
""" helper that will print msg to usplash, plymouth, console """
logging.log(level, msg)
do_plymouth(msg)
do_usplash(msg)
def log_progress():
""" helper to log the install progress (if any) """
# wait a some seconds and try again
msg = _("Unattended-upgrade in progress during shutdown, "
"sleeping for 5s")
# progress info
progress = "/var/run/unattended-upgrades.progress"
if os.path.exists(progress):
msg += "\n" + open(progress).read()
# log it
log_msg(msg)
if __name__ == "__main__":
# setup gettext
localesApp = "unattended-upgrades"
localesDir = "/usr/share/locale"
gettext.bindtextdomain(localesApp, localesDir)
gettext.textdomain(localesApp)
parser = OptionParser()
parser.add_option("", "--debug",
action="store_true", dest="debug", default=False,
help="print debug messages")
parser.add_option("", "--delay", default=10,
help="delay in minutes to wait for unattended-upgrades")
parser.add_option("", "--lock-file",
default="/var/run/unattended-upgrades.lock",
help="lock file location")
(options, args) = parser.parse_args()
# setup logging
level = logging.INFO
if options.debug:
level = logging.DEBUG
# use a normal logfile instead of syslog too as on shutdown its too
# easy to get syslog killed
logdir = apt_pkg.config.find_dir(
"Unattended-Upgrade::LogDir", "/var/log/unattended-upgrades/")
if not os.path.exists(logdir):
os.makedirs(logdir)
logfile = os.path.join(logdir, "unattended-upgrades-shutdown.log")
logging.basicConfig(filename=logfile,
level=level,
format="%(asctime)s %(levelname)s - %(message)s")
# check if we need to run unattended-upgrades on shutdown and if so,
# run it
p = None
apt_pkg.init_config()
if apt_pkg.config.find_b("Unattended-Upgrade::InstallOnShutdown", False):
env = copy.copy(os.environ)
env["UNATTENDED_UPGRADES_FORCE_INSTALL_ON_SHUTDOWN"] = "1"
logging.debug("starting unattended-upgrades in shutdown mode")
p = subprocess.Popen(["unattended-upgrade"], env=env)
log_msg(_("Running unattended-upgrades in shutdown mode"))
while True:
log_progress()
if p.poll() is not None:
break
time.sleep(5)
# run the monitoring loop and keep the "UI" updated
start_time = time.time()
lock_was_taken = False
while True:
res = apt_pkg.get_lock(options.lock_file)
logging.debug("get_lock returned %i" % res)
# exit here if there is no lock
if res > 0:
logging.debug("lock not taken")
break
lock_was_taken = True
# signal unattended-upgrades to stop
p = "/var/run/unattended-upgrades.pid"
if os.path.exists(p):
pid = int(open(p).read())
logging.debug("found running unattended-upgrades pid %s" % pid)
os.kill(pid, signal.SIGUSR1)
# show log
log_progress()
time.sleep(5)
if (time.time() - start_time) > options.delay*60:
logging.warning(_("Giving up on lockfile after %s delay") %
options.delay)
sys.exit(1)
# add finished info to the log/terminal to help tracking down
# LP: #434835
if lock_was_taken:
# re-use existing string
log_msg(_("All upgrades installed"), logging.INFO)
sys.exit(0)