#!/usr/bin/openrc-run # Copyright (c) 2007-2009 Roy Marples # Released under the 2-clause BSD license. : ${urandom_seed:=${URANDOM_SEED:-/var/lib/misc/random-seed}} description="Initializes the random number generator." depend() { need localmount keyword -jail -lxc -openvz -prefix -systemd-nspawn } save_seed() { local psz=1 if [ -e /proc/sys/kernel/random/poolsize ]; then : $(( psz = $(cat /proc/sys/kernel/random/poolsize) / 4096 )) fi ( # sub shell to prevent umask pollution umask 077 dd if=/dev/urandom of="$urandom_seed" count=${psz} 2>/dev/null ) } start() { [ -c /dev/urandom ] || return if [ -f "$urandom_seed" ]; then ebegin "Initializing random number generator" cat "$urandom_seed" > /dev/urandom eend $? "Error initializing random number generator" fi rm -f "$urandom_seed" && save_seed return 0 } stop() { ebegin "Saving random seed" save_seed eend $? "Failed to save random seed" }