# networking - configure virtual network devices
#
# This task causes virtual network devices that do not have an associated
# kernel object to be started on boot.

description "configure virtual network devices"

emits static-network-up
emits net-device-up
emits deconfiguring-networking

start on (local-filesystems
and (stopped udevtrigger or container)) or runlevel [2345] or stopped networking RESULT=failed PROCESS=post-stop EXIT_STATUS=100
stop on unmounted-remote-filesystems

pre-start script
if [ "$UPSTART_EVENTS" = "stopped" ] && [ "$UPSTART_JOB" = "networking" ] && [ "$EXIT_STATUS" = "100" ]; then
exit 0
fi

mkdir -p /run/network
ifup -a
end script

post-stop script
if [ -z "$UPSTART_STOP_EVENTS" ]; then
echo "Stopping or restarting the networking job is not supported."
echo "Use ifdown & ifup to reconfigure desired interface."
exit 100
fi

log_warning_msg() {
echo $*
}

# These checks were taken from the Debian ifupdown.networking.init script
check_network_file_systems() {
[ -e /proc/mounts ] || return 0

if [ -e /etc/iscsi/iscsi.initramfs ]; then
log_warning_msg "not deconfiguring network interfaces: iSCSI root is mounted."
exit 0
fi

while read DEV MTPT FSTYPE REST; do
case $DEV in
/dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
log_warning_msg "not deconfiguring network interfaces: network devices still mounted."
exit 0
;;
esac
case $FSTYPE in
nfs|nfs4|smbfs|ncp|ncpfs|cifs|coda|ocfs2|gfs|pvfs|pvfs2|fuse.httpfs|fuse.curlftpfs)
log_warning_msg "not deconfiguring network interfaces: network file systems still mounted."
exit 0
;;
esac
done < /proc/mounts
}

check_network_swap() {
[ -e /proc/swaps ] || return 0

while read DEV MTPT FSTYPE REST; do
case $DEV in
/dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
log_warning_msg "not deconfiguring network interfaces: network swap still mounted."
exit 0
;;
esac
done < /proc/swaps
}

check_network_file_systems
check_network_swap

# Anything that manages network interfaces *MUST* wait for this event
initctl emit deconfiguring-networking
ifdown -a --exclude=lo
end script