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-rw-r--r--debian/apt.cron.daily104
1 files changed, 104 insertions, 0 deletions
diff --git a/debian/apt.cron.daily b/debian/apt.cron.daily
index 3e6b384d2..7ee7e46db 100644
--- a/debian/apt.cron.daily
+++ b/debian/apt.cron.daily
@@ -2,6 +2,33 @@
#
#set -e
+#
+# This file understands the following apt configuration variables:
+#
+# "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::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()
{
@@ -21,6 +48,11 @@ check_stamp()
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
@@ -35,6 +67,75 @@ update_stamp()
touch $stamp
}
+
+
+# we check here if autoclean was enough sizewise
+check_size_constraints()
+{
+ # min-age in days
+ MaxAge=0
+ MinAge=1
+ 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 -not -mtime -$MinAge -print0 | xargs -r -0 rm -f
+ elif [ ! $MaxAge -eq 0 ]; then
+ find $Cache -name "*.deb" -mtime +$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 $Cache/*.deb); do
+ du=$(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 [ ! $MinAge -eq 0 ]; then
+ mtime=$(date --date=$(date -r $file --iso-8601) +%s)
+ delta=$(($now-$mtime))
+ #echo "$file ($delta), $MinAge"
+ if [ $delta -le $MinAge ]; then
+ #echo "Skiping $file (delta=$delta)"
+ continue
+ fi
+ fi
+
+ # delete oldest file
+ rm -f $file
+ done
+ fi
+}
+
+
UpdateInterval=0
DownloadUpgradeableInterval=0
eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
@@ -74,3 +175,6 @@ if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then
apt-get -qq autoclean
update_stamp $AUTOCLEAN_STAMP
fi
+
+# check cache size
+check_size_constraints