freebsd-dev/etc/rc.shutdown
Bjoern A. Zeeb 7bc5585ecb Instead of killing the 'watchdog' subshell and leaving a sleep for
rcshutdown_timeout (normally 30s) around re-parented to init, make
sure both go away using pkill -P.

While noone normally notices this for the system shutdown, it helps for
cleanly shutting down trusted jails.
Found without a killall in the base system, which in rc.d/jail normally
ensures that all processes of a jail to be stopped will be killed.

Reviewed by:	silence on current@
MFC after:	4 weeks
2009-01-25 10:31:45 +00:00

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#!/bin/sh
#
# Copyright (c) 1997 Ollivier Robert
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
# Site-specific closing actions for daemons run by init on shutdown,
# or before going single-user from multi-user.
# Output and errors are directed to console by init, and the
# console is the controlling terminal.
stty status '^T'
# Set shell to ignore SIGINT (2), but not children;
# shell catches SIGQUIT (3) and returns to single user after fsck.
trap : 2
trap : 3 # shouldn't be needed
HOME=/
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin
export HOME PATH
. /etc/rc.subr
load_rc_config 'XXX'
# reverse_list list
# print the list in reverse order
#
reverse_list()
{
_revlist=
for _revfile in $*; do
_revlist="$_revfile${script_name_sep}$_revlist"
done
echo $_revlist
}
# If requested, start a watchdog timer in the background which
# will terminate rc.shutdown if rc.shutdown doesn't complete
# within the specified time.
#
_rcshutdown_watchdog=
if [ -n "$rcshutdown_timeout" ]; then
debug "Initiating watchdog timer."
sleep $rcshutdown_timeout && (
_msg="$rcshutdown_timeout second watchdog"
_msg="$_msg timeout expired. Shutdown terminated."
logger -t rc.shutdown "$_msg"
echo "$_msg"
date
kill -KILL $$ >/dev/null 2>&1
) &
_rcshutdown_watchdog=$!
fi
# Determine the shutdown order of the /etc/rc.d scripts,
# and perform the operation
#
rcorder_opts="-k shutdown"
[ `/sbin/sysctl -n security.jail.jailed` -eq 1 ] && rcorder_opts="$rcorder_opts -s nojail"
case ${local_startup} in
[Nn][Oo] | '') ;;
*) find_local_scripts_new ;;
esac
files=`rcorder ${rcorder_opts} /etc/rc.d/* ${local_rc} 2>/dev/null`
for _rc_elem in `reverse_list $files`; do
debug "run_rc_script $_rc_elem faststop"
run_rc_script $_rc_elem faststop
done
# Terminate the background watchdog timer (if it is running)
#
if [ -n "$_rcshutdown_watchdog" ]; then
pkill -TERM -P $_rcshutdown_watchdog >/dev/null 2>&1
fi
# Insert other shutdown procedures here
echo '.'
exit 0