diff options
Diffstat (limited to 'mk/rootfs/openrc/etc/init.d/urandom')
-rw-r--r-- | mk/rootfs/openrc/etc/init.d/urandom | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/mk/rootfs/openrc/etc/init.d/urandom b/mk/rootfs/openrc/etc/init.d/urandom new file mode 100644 index 0000000..edd645d --- /dev/null +++ b/mk/rootfs/openrc/etc/init.d/urandom @@ -0,0 +1,39 @@ +#!/sbin/openrc-run +# Copyright (c) 2007-2009 Roy Marples <roy@marples.name> +# Released under the 2-clause BSD license. + +: ${urandom_seed:=${URANDOM_SEED:-/etc/random-seed}} +description="Initializes the random number generator." + +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" +} |