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description "Pre-cache and pre-load apparmor profiles" author "Dimitri John Ledkov <xnox@ubuntu.com> and Jamie Strandboge <jamie@ubuntu.com>" task start on starting rc-sysinit script [ -d /rofs/etc/apparmor.d ] && exit 0 # do not load on liveCD [ -d /sys/module/apparmor ] || exit 0 # do not load without AppArmor [ -x /sbin/apparmor_parser ] || exit 0 # do not load without parser . /lib/apparmor/functions systemd-detect-virt --quiet --container && ! is_container_with_internal_policy && exit 0 || true # Need securityfs for any mode if [ ! -d /sys/kernel/security/apparmor ]; then if cut -d" " -f2,3 /proc/mounts | grep -q "^/sys/kernel/security securityfs"'$' ; then exit 0 else mount -t securityfs none /sys/kernel/security || exit 0 fi fi [ -w /sys/kernel/security/apparmor/.load ] || exit 0 apparmor_was_updated=0 if ! compare_previous_version ; then # On snappy flavors, if the current and previous versions are # different then clear the system cache. snappy will handle # "$PROFILES_CACHE_VAR" itself (on Touch flavors # compare_previous_version always returns '0' since snappy # isn't available). clear_cache_system apparmor_was_updated=1 elif ! compare_and_save_debsums apparmor ; then # If the system policy has been updated since the last time we # ran, clear the cache to prevent potentially stale binary # cache files after an Ubuntu image based upgrade (LP: # #1350673). This can be removed once all system image flavors # move to snappy (on snappy systems compare_and_save_debsums # always returns '0' since /var/lib/dpkg doesn't exist). clear_cache apparmor_was_updated=1 fi if [ -x /usr/bin/aa-clickhook ] || [ -x /usr/bin/aa-profile-hook ] ; then # If packages for system policy that affect click packages have # been updated since the last time we ran, run aa-clickhook -f force_clickhook=0 force_profile_hook=0 if ! compare_and_save_debsums apparmor-easyprof-ubuntu ; then force_clickhook=1 fi if ! compare_and_save_debsums apparmor-easyprof-ubuntu-snappy ; then force_clickhook=1 fi if ! compare_and_save_debsums click-apparmor ; then force_clickhook=1 force_profile_hook=1 fi if [ -x /usr/bin/aa-clickhook ] && ([ $force_clickhook -eq 1 ] || [ $apparmor_was_updated -eq 1 ]) ; then aa-clickhook -f fi if [ -x /usr/bin/aa-profile-hook ] && ([ $force_profile_hook -eq 1 ] || [ $apparmor_was_updated -eq 1 ]) ; then aa-profile-hook -f fi fi if [ "$ACTION" = "teardown" ]; then running_profile_names | while read profile; do unload_profile "$profile" done exit 0 fi if [ "$ACTION" = "clear" ]; then clear_cache exit 0 fi if [ "$ACTION" = "reload" ] || [ "$ACTION" = "force-reload" ]; then clear_cache load_configured_profiles exit 0 fi # Note: if apparmor-easyprof-ubuntu md5sums didn't match up above, # aa-clickhook will have already compiled the policy, generated the cache # files and loaded them into the kernel by this point, so reloading click # policy from cache, while fairly fast (<2 seconds for 250 profiles on # armhf), is redundant. Fixing this would complicate the logic quite a bit # and it wouldn't improve the (by far) common case (ie, when # 'aa-clickhook -f' is not run). load_configured_profiles end script