#!/bin/sh

. /etc/init/rc.conf

main() {
    PATH=/sbin:/bin:/usr/sbin:/usr/bin

    log "Waiting for services to stop..."; {
        sv -w196 force-stop /var/service/*
        sv exit /var/service/*
    }

    log "Saving random seed..."; {
        dd count=1 bs=512 if=/dev/random of=/var/random.seed
    }

    halt -w

    log "Sending TERM signal to all processes..."; {
        killall5 -TERM
        sleep 1
    }

    log "Sending KILL signal to all processes..."; {
        killall5 -KILL
    }

    log "Unmounting filesystems and disabling swap..." \
	    "Remounting rootfs as readonly"; {
        swapoff -a
        umount -rat nosysfs,noproc,nodevtmpfs,notmpfs
        mount -o remount,ro /

        sync
    }

    log "Deactivating dmcrypt devices (if any exist)."; {
        [ -x /bin/cryptsetup ] && [ -x /bin/dmsetup ] && {
            dmsetup ls --target crypt \
                       --exec "dmsetup info -c --noheadings -o open,name" |
            while read -r drive; do
                [ "${drive%%:*}" = "0" ] && cryptsetup close "${drive##*:}"
            done
        }
    }
}

main