busybox/examples/shutdown-1.0/script/do_shutdown

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#!/bin/sh
# We are called with stdin/out/err = /dev/null
resetgracetime=60
logfile="/var/log/reboot/`date '+%Y%m%d%H%M%S'`.log"
mkdir -p /var/log/reboot
PATH=/sbin:/bin
say() {
printf "\r%s\n\r" "$*"
}
# Since there is a potential for various fuckups during umount,
# we start delayed hard reboot here which will forcibly
# reboot hung box in a remote datacenter a thousand miles away ;)
if test "$1" = "-r"; then
./hardshutdown -r "$resetgracetime" &
fi
# Now, (try to) switch away from X and open a console. I've seen reboots
# hung on open("/dev/console"), therefore we do it _after_ hardshutdown
exec >/dev/console 2>&1
if test "$1" = "-r"; then
say "* `date '+%H:%M:%S'` Scheduled hard reboot in $resetgracetime seconds"
fi
say "* `date '+%H:%M:%S'` Stopping tasks (see /var/log/reboot/* files)"
# log reboot event to file. %Y%m%d%H%M%S: YYYYMMDDHHMMSS
./stop_tasks >"$logfile" 2>&1
# Dying X tends to leave us at semi-random vt. Try to fix that,
# but if it doesn't work, proceed anyway.
exec >/dev/null 2>&1
chvt 1 & sleep 1
exec >/dev/console 2>&1
command -v ctrlaltdel >/dev/null && {
say "* `date '+%H:%M:%S'` Setting Ctrl-Alt-Del to 'hard'"
ctrlaltdel hard
}
say "* `date '+%H:%M:%S'` Stopping storage devices"
# we can't log this: we are about to unmount everything!
./stop_storage "$@"
# If we have cmdline params, start hardshutdown with them
test "$*" && ./hardshutdown "$@"
# Just sleep endlessly...
say "* `date '+%H:%M:%S'` You may now power off or press Ctrl-Alt-Del to reboot"
while true; do sleep 32000; done