touch $stamp
}
-
-
-# we check here if autoclean was enough sizewise
-check_size_constraints()
+debug_echo()
{
- # 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
+ # Display message if $VERBOSE >= 1
+ if [ "$VERBOSE" -ge 1 ]; then
+ echo $1 1>&2
fi
-
- Cache="${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 apt-config exstance
+if ! which apt-config >/dev/null ; then
+ exit 0
+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
+# Set VERBOSE mode from apt-config (or inherit from environment)
+eval $(apt-config shell VERBOSE APT::Periodic::Verbose)
+if [ -z "$VERBOSE" ]; then
+ VERBOSE="0"
+fi
+if [ "$VERBOSE" -le 2 ]; then
+ # quiet for 0,1,2
+ XSTDOUT=">/dev/null"
+ XSTDERR="2>/dev/null"
+ XAPTOPT="-qq"
+ XUUPOPT=""
+else
+ XSTDOUT=""
+ XSTDERR=""
+ XAPTOPT=""
+ XUUPOPT="-d"
+fi
+if [ "$VERBOSE" -ge 3 ]; then
+ # trace output
+ set -x
+fi
+
- # delete oldest file
- rm -f $file
- done
+# laptop check, on_ac_power returns:
+# 0 (true) System is on main power
+# 1 (false) System is not on main power
+# 255 (false) Power status could not be determined
+# Desktop systems always return 255 it seems
+if which on_ac_power >/dev/null; then
+ on_ac_power
+ POWER=$?
+ if [ $POWER -eq 1 ]; then
+ debug_echo "exit: system on main power."
+ exit 0
+ elif [ $POWER -ne 0 ]; then
+ debug_echo "exit: power status ($POWER) undetermined."
+ exit 0
fi
-}
+ debug_echo "system is on main power."
+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
-}
+# check if we can lock the cache and if the cache is clean
+if which apt-get >/dev/null && ! eval apt-get check $XAPTOPT $XSTDERR ; then
+ debug_echo "error encountered in cron job with \"apt-get check\"."
+ exit 0
+fi
+# No need to check for apt-get below
-# main
+# Global current time in seconds since 1970-01-01 00:00:00 UTC
+now=$(date +%s)
-if ! which apt-config >/dev/null; then
- exit 0
+# Set default values and normalize
+Dir="/"
+eval $(apt-config shell Dir Dir)
+Dir=${Dir%/}
+
+CacheDir="var/cache/apt/"
+eval $(apt-config shell CacheDir Dir::Cache)
+CacheDir=${CacheDir%/}
+if [ -z "$CacheDir" ]; then
+ debug_echo "practically empty Dir::Cache, exiting"
+ exit 0
fi
+CacheArchive="archives/"
+eval $(apt-config shell CacheArchive Dir::Cache::Archives)
+CacheArchive=${CacheArchive%/}
+if [ -z "$CacheArchive" ]; then
+ debug_echo "practically empty Dir::Cache::archives, exiting"
+ exit 0
+fi
+
+BackupArchiveInterval=0
+eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
+
+BackupLevel=3
+eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
+if [ $BackupLevel -le 1 ]; then BackupLevel=2 ; fi
+
+CacheBackup="backup/"
+eval $(apt-config shell CacheBackup Dir::Cache::Backup)
+CacheBackup=${CacheBackup%/}
+if [ -z "$CacheBackup" ]; then
+ echo "practically empty Dir::Cache::Backup, exiting" 1>&2
+ exit 0
+fi
+
+# Support old Archive for compatibility.
+# Document only Periodic for all controling parameters of this script.
+MaxAge=0
+eval $(apt-config shell MaxAge APT::Archives::MaxAge)
+eval $(apt-config shell MaxAge APT::Periodic::MaxAge)
+
+MinAge=2
+eval $(apt-config shell MinAge APT::Archives::MinAge)
+eval $(apt-config shell MinAge APT::Periodic::MinAge)
+
+MaxSize=0
+eval $(apt-config shell MaxSize APT::Archives::MaxSize)
+eval $(apt-config shell MaxSize APT::Periodic::MaxSize)
+
UpdateInterval=0
+eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
+
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)
+eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
+
UnattendedUpgradeInterval=0
eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
-# 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
+AutocleanInterval=0
+eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
+
+Cache="${Dir}/${CacheDir}/${CacheArchive}/"
+Back="${Dir}/${CacheDir}/${CacheBackup}/"
+BackX="${Back}${CacheArchive}/"
+for x in $(seq 0 1 $((${BackupLevel}-1))); do
+ eval "Back${x}=${Back}${x}/"
+done
+
+ # check if we actually have to do anything
+ if [ $UpdateInterval -eq 0 ] &&
+ [ $DownloadUpgradeableInterval -eq 0 ] &&
+ [ $UnattendedUpgradeInterval -eq 0 ] &&
++ [ $BackupArchiveInterval -eq 0 ] &&
+ [ $AutocleanInterval -eq 0 ]; then
+ exit 0
+ 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
+
+# backup after n-days if archive contents changed.
+# (This uses hardlink to save disk space)
+BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
+if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval; then
+ if [ $({(cd $Cache 2>/dev/null; find . -name "*.deb"); (cd $Back0 2>/dev/null;find . -name "*.deb") ;}| sort|uniq -u|wc -l) -ne 0 ]; then
+ mkdir -p $Back
+ rm -rf $Back$((${BackupLevel}-1))
+ for y in $(seq $((${BackupLevel}-1)) -1 1); do
+ eval BackY=${Back}$y
+ eval BackZ=${Back}$(($y-1))
+ if [ -e $BackZ ]; then mv -f $BackZ $BackY ; fi
+ done
+ cp -la $Cache $Back ; mv -f $BackX $Back0
+ update_stamp $BACKUP_ARCHIVE_STAMP
+ debug_echo "backup with hardlinks. (success)"
+ else
+
+ debug_echo "skip backup since same content."
fi
+else
+ debug_echo "skip backup since too new."
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
+# package archive contnts removal by package age
+if [ $MaxAge -ne 0 ] && [ $MinAge -ne 0 ]; then
+ find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
+ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
+elif [ $MaxAge -ne 0 ]; then
+ find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
+ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
+else
+ debug_echo "skip aging since MaxAge is 0"
fi
+
+# package archive contnts removal down to $MaxSize
+if [ $MaxSize -ne 0 ]; then
+
+ MinAgeSec=$(($MinAge*24*60*60))
+
+ # reverse-sort by mtime
+ for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
+ du=$(du -m -s $Cache)
+ size=${du%%/*}
+ # check if the cache is small enough
+ if [ $size -lt $MaxSize ]; then
+ debug_echo "end remove by archive size: size=$size < $MaxSize"
+ break
+ fi
+
+ # check for MinAge in second of the file
+ if [ $MinAgeSec -ne 0 ]; then
+ # check both ctime and mtime
+ mtime=$(stat -c %Y $file)
+ ctime=$(stat -c %Z $file)
+ if [ $mtime -gt $ctime ]; then
+ delta=$(($now-$mtime))
+ else
+ delta=$(($now-$ctime))
+ fi
+ if [ $delta -le $MinAgeSec ]; then
+ debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
+ else
+ # delete oldest file
+ debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
+ rm -f $file
+ 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
+ done
fi
-UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
-if check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
- unattended-upgrade
- update_stamp $UPGRADE_STAMP
+# update package lists
+UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
+if check_stamp $UPDATE_STAMP $UpdateInterval; then
+ if eval apt-get $XAPTOPT -y update $XSTDERR; then
+ debug_echo "download updated metadata (success)."
+ if which dbus-send >/dev/null && pidof dbus-daemon >/dev/null; then
+ if dbus-send --system / app.apt.dbus.updated boolean:true ; then
+ debug_echo "send dbus signal (success)"
+ else
+ debug_echo "send dbus signal (error)"
+ fi
+ else
+ debug_echo "dbus signal not send (command not available)"
+ fi
+ update_stamp $UPDATE_STAMP
+ # download all upgradeable packages if it is requested
+ DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
+ if check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
+ if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then
+ update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
+ debug_echo "download upgradable (success)."
+ # auto upgrade all upgradeable packages
+ UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
+ if which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval; then
+ if unattended-upgrade $XUUPOPT; then
+ update_stamp $UPGRADE_STAMP
+ debug_echo "unattended-upgrade (success)."
+ else
+ debug_echo "unattended-upgrade (error)."
+ fi
+ else
+ debug_echo "unattended-upgrade (not run)."
+ fi
+ else
+ debug_echo "download upgradable (error)."
+ fi
+ else
+ debug_echo "download upgradable (not run)."
+ fi
+ else
+ debug_echo "download updated metadata (error)."
+ fi
+else
+ debug_echo "download updated metadata (not run)."
fi
+# autoclean package archive
AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
- apt-get -qq autoclean
- update_stamp $AUTOCLEAN_STAMP
+ if apt-get $XAPTOPT -y autoclean $XSTDERR; then
+ debug_echo "autoclean (success)."
+ update_stamp $AUTOCLEAN_STAMP
+ else
+ debug_echo "autoclean (error)."
+ fi
+else
+ debug_echo "autoclean (not run)."
fi
-# check cache size
-check_size_constraints
+#
+# vim: set sts=4 ai :
+#
+
projects / apt.git / commitdiff
