NetBSD/etc/rc.shutdown

#!/bin/sh
#
# $NetBSD: rc.shutdown,v 1.9 2012/06/25 07:22:45 jnemeth Exp $
#
# rc.shutdown --
#	Run the scripts in /etc/rc.d with reverse rcorder.

#	System shutdown script run by shutdown(8) at system shutdown time.
#	Note that halt(8) and reboot(8) do NOT invoke this script.

export HOME=/
export PATH=/sbin:/bin:/usr/sbin:/usr/bin

. /etc/rc.subr
. /etc/rc.conf

if ! checkyesno do_rcshutdown; then
	echo "Skipping shutdown hooks."
	exit 0
fi

stty status '^T'

#	Set shell to ignore SIGINT, but not children;
#	shell catches SIGQUIT and returns to single user.
#
trap : INT
trap "echo 'Shutdown interrupted.'; exit 1" QUIT

#	If requested, start a watchdog timer in the background which
#	will terminate rc.shutdown if rc.shutdown doesn't complete
#	within the specified time.
#
_rcshutdown_watchdog=
if [ -n "$rcshutdown_timeout" ]; then
	sleep $rcshutdown_timeout && (
	    _msg="$rcshutdown_timeout second watchdog timeout expired. Shutdown terminated."
	    logger -t rc.shutdown "$_msg"
	    echo "$_msg"
	    date
	    kill -KILL $$ >/dev/null 2>&1
	    ) &
	_rcshutdown_watchdog=$!
fi


#	Determine the shutdown order of the rc.d scripts,
#	and perform the operation
#
scripts=$(for rcd in ${rc_directories:-/etc/rc.d}; do
	test -d ${rcd} && echo ${rcd}/*; done)
files=$(rcorder -k shutdown ${rcshutdown_rcorder_flags} ${scripts})

for _rc_elem in $(reverse_list $files); do
	run_rc_script $_rc_elem stop
done


#	Terminate the background watchdog timer (if it is running)
#
if [ -n "$_rcshutdown_watchdog" ]; then
	kill -TERM $_rcshutdown_watchdog >/dev/null 2>&1
fi

date
exit 0