| 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 |
| unload_obsolete_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 |