Bug#485476: Patch for /etc/cron.daily/apt
Hi!
I got no response so far, so I changed /etc/cron.daily/apt to implement a
parameter to stop the script if the user want this.
You can disable the script with:
APT::Periodic::Enable=0
in apt.conf.
if APT::Periodic::Enable is not there the script whill behave like before
like APT::Periodic::Enable=1.
Please apply this patch to the script!
Cheers,
Oliver
--
(O> (0- _o) -O)
//\ //\ /\\ /\\
V_/_ V_/_ _\_V _\_V
Dr. Oliver-M. Cordes E-Mail: ocordes@astro.uni-bonn.de
WWW-URL: http://www.astro.uni-bonn.de/~ocordes/
Argelander Institut fuer Astronomie
Universitaet Bonn Phone: (49) 228 / 73-5656
Auf dem Huegel 71 Fax: (49) 228 / 73-3672
D - 53121 Bonn Germany
Private address: Zukunftsweg 10 , D - 53343 Wachtberg-Villiprott
Private phone: (49) 228 / 7482582
#!/bin/sh
#
#set -e
#
# This file understands the following apt configuration variables:
#
# "APT::Periodic::Enable=1"
# - Enable the update/upgrade script (0=disable)
#
# "APT::Periodic::Update-Package-Lists=1"
# - Do "apt-get update" automatically every n-days (0=disable)
#
# "APT::Periodic::Download-Upgradeable-Packages=0",
# - Do "apt-get upgrade --download-only" every n-days (0=disable)
#
# "APT::Periodic::AutocleanInterval"
# - Do "apt-get autoclean" every n-days (0=disable)
#
# "APT::Periodic::Unattended-Upgrade"
# - Run the "unattended-upgrade" security upgrade script
# every n-days (0=disabled)
# Requires the package "unattended-upgrades" and will write
# a log in /var/log/unattended-upgrades
#
# "APT::Archives::MaxAge",
# - Set maximum allowed age of a cache package file. If a cache
# package file is older it is deleted (0=disable)
#
# "APT::Archives::MaxSize",
# - Set maximum size of the cache in MB (0=disable). If the cache
# is bigger, cached package files are deleted until the size
# requirement is met (the biggest packages will be deleted
# first).
#
# "APT::Archives::MinAge"
# - Set minimum age of a package file. If a file is younger it
# will not be deleted (0=disable). Usefull to prevent races
# and to keep backups of the packages for emergency.
#
check_stamp()
{
stamp="$1"
interval="$2"
if [ $interval -eq 0 ]; then
return 1
fi
if [ ! -f $stamp ]; then
return 0
fi
# compare midnight today to midnight the day the stamp was updated
stamp=$(date --date=$(date -r $stamp --iso-8601) +%s)
now=$(date --date=$(date --iso-8601) +%s)
delta=$(($now-$stamp))
# intervall is in days,
interval=$(($interval*60*60*24))
#echo "stampfile: $1"
#echo "interval=$interval, now=$now, stamp=$stamp, delta=$delta"
if [ $delta -ge $interval ]; then
return 0
fi
return 1
}
update_stamp()
{
stamp="$1"
touch $stamp
}
# we check here if autoclean was enough sizewise
check_size_constraints()
{
# min-age in days
MaxAge=0
MinAge=2
MaxSize=0
CacheDir="var/cache/apt"
CacheArchive="archives/"
eval $(apt-config shell MaxAge APT::Archives::MaxAge)
eval $(apt-config shell MinAge APT::Archives::MinAge)
eval $(apt-config shell MaxSize APT::Archives::MaxSize)
eval $(apt-config shell Dir Dir)
eval $(apt-config shell CacheDir Dir::Cache)
eval $(apt-config shell CacheArchive Dir::Cache::archives)
# sanity check
if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
echo "empty Dir::Cache or Dir::Cache::archives, exiting"
exit
fi
Cache="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
# check age
if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
elif [ ! $MaxAge -eq 0 ]; then
find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
fi
# check size
if [ ! $MaxSize -eq 0 ]; then
# maxSize is in MB
MaxSize=$(($MaxSize*1024))
#get current time
now=$(date --date=$(date --iso-8601) +%s)
MinAge=$(($MinAge*24*60*60))
# reverse-sort by mtime
for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
du=$(du -s $Cache)
size=${du%%/*}
# check if the cache is small enough
if [ $size -lt $MaxSize ]; then
break
fi
# check for MinAge of the file
if [ ! $MinAge -eq 0 ]; then
# check both ctime and mtime
mtime=$(stat -c %Y $file)
ctime=$(stat -c %Z $file)
if [ $mtime -gt $ctime ]; then
delta=$(($now-$mtime))
else
delta=$(($now-$ctime))
fi
#echo "$file ($delta), $MinAge"
if [ $delta -le $MinAge ]; then
#echo "Skiping $file (delta=$delta)"
break
fi
fi
# delete oldest file
rm -f $file
done
fi
}
# sleep for a random intervall of time (default 30min)
# (some code taken from cron-apt, thanks)
random_sleep()
{
RandomSleep=1800
eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
if [ $RandomSleep -eq 0 ]; then
return
fi
if [ -z "$RANDOM" ] ; then
# A fix for shells that do not have this bash feature.
RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null | cksum | cut -c"1-5")
fi
TIME=$(($RANDOM % $RandomSleep))
sleep $TIME
}
# main
if ! which apt-config >/dev/null; then
exit 0
fi
# check if the user really wants to do something
AutoAptEnable=1 # default is yes
eval $(apt-config shell AutoAptEnable APT::Periodic::Enable)
if [ $AutoAptEnable -eq 0 ]
then
exit 0
fi
UpdateInterval=0
DownloadUpgradeableInterval=0
eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
AutocleanInterval=$DownloadUpgradeableInterval
eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
UnattendedUpgradeInterval=0
eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
# check if we actually have to do anything
if [ $UpdateInterval -eq 0 ] &&
[ $DownloadUpgradeableInterval -eq 0 ] &&
[ $UnattendedUpgradeInterval -eq 0 ] &&
[ $AutocleanInterval -eq 0 ]; then
exit 0
fi
# laptop check, on_ac_power returns:
# 0 (true) System is on mains power
# 1 (false) System is not on mains power
# 255 (false) Power status could not be determined
# Desktop systems always return 255 it seems
if which on_ac_power >/dev/null; then
on_ac_power
if [ $? -eq 1 ]; then
exit 0
fi
fi
# sleep random amount of time to avoid hitting the
# mirrors at the same time
random_sleep
# check if we can access the cache
if ! apt-get check -q -q 2>/dev/null; then
# wait random amount of time before retrying
random_sleep
# check again
if ! apt-get check -q -q 2>/dev/null; then
echo "$0: could not lock the APT cache while performing daily cron job. "
echo "Is another package manager working?"
exit 1
fi
fi
UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
if check_stamp $UPDATE_STAMP $UpdateInterval; then
if apt-get -qq update 2>/dev/null; then
if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
dbus-send --system / app.apt.dbus.updated boolean:true
fi
update_stamp $UPDATE_STAMP
fi
fi
DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
apt-get -qq -d dist-upgrade 2>/dev/null
update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
fi
UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
if check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
unattended-upgrade
update_stamp $UPGRADE_STAMP
fi
AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
apt-get -qq autoclean
update_stamp $AUTOCLEAN_STAMP
fi
# check cache size
check_size_constraints
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