freebsd-dev/etc/rc.shutdown
Mark Murray b74aa5644c Add entropy caching. With this, some entropy is cached at shutdown
time, and this is used to reseed the random number generator at
boot time.

NOTE - this has no hope of working if you halt(); you need to
execute rc.shutdown to get the entropy stash.
2000-07-17 12:28:58 +00:00

79 lines
1.6 KiB
Bash

#!/bin/sh
# $FreeBSD$
# 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
# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/rc.conf ]; then
. /etc/defaults/rc.conf
source_rc_confs
elif [ -r /etc/rc.conf ]; then
. /etc/rc.conf
fi
# Write some entropy so the rebooting /dev/random can reseed
#
case ${entropy_file} in
[Nn][Oo] | '')
;;
*)
if [ -f ${entropy_file} -a -r ${entropy_file} ] ; then
echo -n "Writing entropy file"
touch ${entropy_file} && \
chmod 600 ${entropy_file} && \
dd if=/dev/random of=${entropy_file} bs=4096 count=1
fi
;;
esac
# Check if /var/db/mounttab is clean.
case $1 in
reboot)
if [ -f /var/db/mounttab ]; then
rpc.umntall
fi
;;
esac
echo -n "Shutting down daemon processes: "
# for each valid dir in $local_startup, search for init scripts matching *.sh
case ${local_startup} in
[Nn][Oo] | '')
;;
*)
for dir in ${local_startup}; do
if [ -d "${dir}" ]; then
for script in ${dir}/*.sh; do
if [ -x "${script}" ]; then
(set -T
trap 'exit 1' 2
${script} stop)
fi
done
fi
done
echo .
;;
esac
# Insert other shutdown procedures here
echo '.'
exit 0