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#!/bin/sh #set -e # # This file understands the following apt configuration variables: # Values here are the default. # Create /etc/apt/apt.conf.d/10periodic file to set your preference. # # All of the n-days interval options also accept the suffixes # s for seconds, m for minutes, h for hours, d for days or # the "always" value to do the action for every job run, # which can be used with systemd OnCalendar overrides to # define custom schedules for the apt update/upgrade jobs. # # Dir "/"; # - RootDir for all configuration files # # Dir::Cache "var/cache/apt/"; # - Set apt package cache directory # # Dir::Cache::Archives "archives/"; # - Set package archive directory # # APT::Periodic::Enable "1"; # - Enable the update/upgrade script (0=disable) # # APT::Periodic::BackupArchiveInterval "0"; # - Backup after n-days if archive contents changed.(0=disable) # # APT::Periodic::BackupLevel "3"; # - Backup level.(0=disable), 1 is invalid. # # Dir::Cache::Backup "backup/"; # - Set periodic package backup directory # # APT::Archives::MaxAge "0"; (old, deprecated) # APT::Periodic::MaxAge "0"; (new) # - Set maximum allowed age of a cache package file. If a cache # package file is older it is deleted (0=disable) # # APT::Archives::MinAge "2"; (old, deprecated) # APT::Periodic::MinAge "2"; (new) # - Set minimum age of a package file. If a file is younger it # will not be deleted (0=disable). Useful to prevent races # and to keep backups of the packages for emergency. # # APT::Archives::MaxSize "0"; (old, deprecated) # APT::Periodic::MaxSize "0"; (new) # - 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 oldest packages will be deleted # first). # # APT::Periodic::Update-Package-Lists "0"; # - 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::Download-Upgradeable-Packages-Debdelta "1"; # - Use debdelta-upgrade to download updates if available (0=disable) # # APT::Periodic::Unattended-Upgrade "0"; # - 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::Periodic::AutocleanInterval "0"; # - Do "apt-get autoclean" every n-days (0=disable) # # APT::Periodic::CleanInterval "0"; # - Do "apt-get clean" every n-days (0=disable) # # APT::Periodic::Verbose "0"; # - Send report mail to root # 0: no report (or null string) # 1: progress report (actually any string) # 2: + command outputs (remove -qq, remove 2>/dev/null, add -d) # 3: + trace on # check_stamp() { stamp="$1" interval="$2" if [ "$interval" = always ]; then debug_echo "check_stamp: ignoring time stamp file, interval set to always" # treat as enough time has passed return 0 fi if [ "$interval" = 0 ]; then debug_echo "check_stamp: interval=0" # treat as no time has passed return 1 fi if [ ! -f "$stamp" ]; then debug_echo "check_stamp: missing time stamp file: $stamp." # treat as enough time has passed return 0 fi # compare midnight today to midnight the day the stamp was updated stamp_file="$stamp" stamp=$(date --date="$(date -r "$stamp_file" --iso-8601)" +%s 2>/dev/null) if [ "$?" != "0" ]; then # Due to some timezones returning 'invalid date' for midnight on # certain dates (e.g. America/Sao_Paulo), if date returns with error # remove the stamp file and return 0. See coreutils bug: # http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html rm -f "$stamp_file" return 0 fi now=$(date --date="$(date --iso-8601)" +%s 2>/dev/null) if [ "$?" != "0" ]; then # As above, due to some timezones returning 'invalid date' for midnight # on certain dates (e.g. America/Sao_Paulo), if date returns with error # return 0. return 0 fi delta=$((now-stamp)) # Calculate the interval in seconds depending on the unit specified if [ "${interval%s}" != "$interval" ] ; then interval="${interval%s}" elif [ "${interval%m}" != "$interval" ] ; then interval="${interval%m}" interval=$((interval*60)) elif [ "${interval%h}" != "$interval" ] ; then interval="${interval%h}" interval=$((interval*60*60)) else interval="${interval%d}" interval=$((interval*60*60*24)) fi debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)" # remove timestamps a day (or more) in the future and force re-check if [ "$stamp" -gt $((now+86400)) ]; then echo "WARNING: file $stamp_file has a timestamp in the future: $stamp" rm -f "$stamp_file" return 0 fi 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() { 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" = always ]; then : elif [ "$BackupArchiveInterval" = 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 } debug_echo() { # Display message if $VERBOSE >= 1 if [ "$VERBOSE" -ge 1 ]; then echo "$1" 1>&2 fi } # ------------------------ main ---------------------------- if [ "$1" = "lock_is_held" ]; then shift else # Maintain a lock on fd 3, so we can't run the script twice at the same # time. eval $(apt-config shell StateDir Dir::State/d) exec 3>${StateDir}/daily_lock if ! flock -w 3600 3; then echo "E: Could not acquire lock" >&2 exit 1 fi # We hold the lock. Rerun this script as a child process, which # can run without propagating an extra fd to all of its children. "$0" lock_is_held "$@" 3>&- exit $? fi if test -r /var/lib/apt/extended_states; then # Backup the 7 last versions of APT's extended_states file # shameless copy from dpkg cron if cd /var/backups ; then if ! cmp -s apt.extended_states.0 /var/lib/apt/extended_states; then cp -p /var/lib/apt/extended_states apt.extended_states savelog -c 7 apt.extended_states >/dev/null fi fi fi # check apt-config existence if ! command -v 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 # Set VERBOSE mode from apt-config (or inherit from environment) VERBOSE=0 eval $(apt-config shell VERBOSE APT::Periodic::Verbose) debug_echo "verbose level $VERBOSE" if [ "$VERBOSE" -le 1 ]; then # quiet for 0/1 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 # check if we can lock the cache and if the cache is clean if command -v apt-get >/dev/null && ! eval apt-get check $XAPTOPT $XSTDERR ; then debug_echo "error encountered in cron job with \"apt-get check\"." exit 0 fi # Global current time in seconds since 1970-01-01 00:00:00 UTC now=$(date +%s) # Support old Archive for compatibility. # Document only Periodic for all controlling parameters of this script. UpdateInterval=0 eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists) DownloadUpgradeableInterval=0 eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages) UnattendedUpgradeInterval=0 eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade) AutocleanInterval=0 eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval) CleanInterval=0 eval $(apt-config shell CleanInterval APT::Periodic::CleanInterval) BackupArchiveInterval=0 eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval) Debdelta=1 eval $(apt-config shell Debdelta APT::Periodic::Download-Upgradeable-Packages-Debdelta) # check if we actually have to do anything that requires locking the cache if [ $UpdateInterval = always ] || [ $DownloadUpgradeableInterval = always ] || [ $UnattendedUpgradeInterval = always ] || [ $BackupArchiveInterval = always ] || [ $AutocleanInterval = always ] || [ $CleanInterval = always ] ; then : elif [ $UpdateInterval = 0 ] && [ $DownloadUpgradeableInterval = 0 ] && [ $UnattendedUpgradeInterval = 0 ] && [ $BackupArchiveInterval = 0 ] && [ $AutocleanInterval = 0 ] && [ $CleanInterval = 0 ] ; then # check cache size check_size_constraints exit 0 fi if [ "$1" = "update" ] || [ -z "$1" ] ; then # deal with BackupArchiveInterval do_cache_backup $BackupArchiveInterval # include default system language so that "apt-get update" will # fetch the right translated package descriptions if [ -r /etc/default/locale ]; then . /etc/default/locale export LANG LANGUAGE LC_MESSAGES LC_ALL fi # update package lists UPDATED=0 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)." update_stamp $UPDATE_STAMP UPDATED=1 else debug_echo "download updated metadata (error)" fi else debug_echo "download updated metadata (not run)." fi # download all upgradeable packages (if it is requested) DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp if [ $UPDATED -eq 1 ] && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then if [ $Debdelta -eq 1 ]; then debdelta-upgrade >/dev/null 2>&1 || true fi if eval apt-get $XAPTOPT -y -d dist-upgrade $XSTDERR; then update_stamp $DOWNLOAD_UPGRADEABLE_STAMP debug_echo "download upgradable (success)" else debug_echo "download upgradable (error)" fi else debug_echo "download upgradable (not run)" fi if command -v unattended-upgrade >/dev/null && env LC_ALL=C.UTF-8 unattended-upgrade --help | grep -q download-only && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $UnattendedUpgradeInterval; then if unattended-upgrade --download-only $XUUPOPT; then update_stamp $DOWNLOAD_UPGRADEABLE_STAMP debug_echo "unattended-upgrade -d (success)" else debug_echo "unattended-upgrade -d (error)" fi else debug_echo "unattended-upgrade -d (not run)" fi fi if [ "$1" = "install" ] || [ -z "$1" ] ; then # auto upgrade all upgradeable packages UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp if command -v 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 # clean package archive CLEAN_STAMP=/var/lib/apt/periodic/clean-stamp if check_stamp $CLEAN_STAMP $CleanInterval; then if eval apt-get $XAPTOPT -y clean $XSTDERR; then debug_echo "clean (success)." update_stamp $CLEAN_STAMP else debug_echo "clean (error)" fi else debug_echo "clean (not run)" fi # autoclean package archive AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp if check_stamp $AUTOCLEAN_STAMP $AutocleanInterval; then if eval 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 fi # # vim: set sts=4 ai : #