Migrate ntp from SystemV to Upstart

[Lars Noodén]

If upstart is indeed where Ubuntu is heading then ntp ought to be migrated over to it before 12.04.

Below is a guess at what /etc/init/ntp.conf could contain. Some other changes are needed for it to work properly.

# ntp - Network Time Protoco client and server
#
# The Network Time Protocol client and server synchronizes
# system clocks over the network

description "NTP server"

start on filesystem or runlevel [2345]
stop on runlevel [!2345]

respawn
respawn limit 10 5
umask 022

pre-start script
    test -x /usr/sbin/ntpd || { stop; exit 0; }
    test -f /etc/ntp.conf || { stop; exit 0; }

    mkdir -p -m0755 /var/run/ntp
end script

exec /usr/sbin/ntpd

[Jamie Strandboge (jdstrand)]

ntp also ships an enforcing apparmor profile. As such, the upstart script should include the following in the pre-start script:
pre-start script
    ...
    /lib/init/apparmor-profile-load usr.sbin.ntpd
end script