+# we check here if autoclean was enough sizewise
+check_size_constraints()
+{
+ 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)
+
+ Cache="/var/cache/apt/archives/"
+ eval $(apt-config shell Cache Dir::Cache::archives/d)
+
+ # sanity check
+ if [ -z "$Cache" ]; then
+ echo "empty Dir::Cache::archives, exiting"
+ exit
+ fi
+
+ # check age
+ if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
+ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
+ find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
+ elif [ ! $MaxAge -eq 0 ]; then
+ debug_echo "aged: ctime <$MaxAge and mtime <$MaxAge only"
+ find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
+ else
+ debug_echo "skip aging since MaxAge is 0"
+ 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 $MaxSize ]; then
+ debug_echo "end remove by archive size: size=$size < $MaxSize"
+ break
+ fi
+
+ # check for MinAge of the file
+ if [ $MinAge -ne 0 ]; then
+ # check both ctime and mtime
+ mtime=$(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 $MinAge ]; then
+ debug_echo "skip remove by archive size: $file, delta=$delta < $MinAge"
+ break
+ else
+ # delete oldest file
+ debug_echo "remove by archive size: $file, delta=$delta >= $MinAge (sec), size=$size >= $MaxSize"
+ rm -f $file
+ fi
+ fi
+ done
+ fi
+}
+
+# deal with the Apt::Periodic::BackupArchiveInterval
+do_cache_backup()
+{
+ BackupArchiveInterval="$1"
+ if [ $BackupArchiveInterval -eq 0 ]; then
+ return
+ fi
+
+ # Set default values and normalize
+ CacheDir="/var/cache/apt"
+ eval $(apt-config shell CacheDir Dir::Cache/d)
+ CacheDir=${CacheDir%/}
+ if [ -z "$CacheDir" ]; then
+ debug_echo "practically empty Dir::Cache, exiting"
+ return 0
+ fi
+
+ Cache="${CacheDir}/archives/"
+ eval $(apt-config shell Cache Dir::Cache::Archives/d)
+ if [ -z "$Cache" ]; then
+ debug_echo "practically empty Dir::Cache::archives, exiting"
+ return 0
+ fi
+
+ BackupLevel=3
+ eval $(apt-config shell BackupLevel APT::Periodic::BackupLevel)
+ if [ $BackupLevel -le 1 ]; then
+ BackupLevel=2 ;
+ fi
+
+ Back="${CacheDir}/backup/"
+ eval $(apt-config shell Back Dir::Cache::Backup/d)
+ if [ -z "$Back" ]; then
+ echo "practically empty Dir::Cache::Backup, exiting" 1>&2
+ return
+ fi
+
+ CacheArchive="$(basename "${Cache}")"
+ test -n "${CacheArchive}" || CacheArchive="archives"
+ BackX="${Back}${CacheArchive}/"
+ for x in $(seq 0 1 $((${BackupLevel}-1))); do
+ eval "Back${x}=${Back}${x}/"
+ done
+
+ # 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
+}
+
+# sleep for a random interval 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=$(( $(dd if=/dev/urandom bs=2 count=1 2> /dev/null | cksum | cut -d' ' -f1) % 32767 ))
+ fi
+ TIME=$(($RANDOM % $RandomSleep))
+ debug_echo "sleeping for $TIME seconds"
+ sleep $TIME
+}
+
+
projects / apt.git / blobdiff