Comment 2 for bug 1692543

What if the test was changed to check writability of path_max? Just changing the the check for the sysfs path to -w won't work for root, but maybe something like this (perhaps there's a simpler way to do the check though):

if [[ -f /sys/module/apparmor/parameters/path_max &&
      $(stat -c "%a" /sys/module/apparmor/parameters/path_max) == "600" ]] ; then
        buf_max=2048 #standard x86 page size/2
        old_max=`cat /sys/module/apparmor/parameters/path_max`
        echo $buf_max > /sys/module/apparmor/parameters/path_max
else
        echo "WARNING: This version of AppArmor does not support changing buffer size."
fi