Initial revision

1 files changed, 37 insertions, 0 deletions

diff --git a/rc.d/init.d/random b/rc.d/init.d/random
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+#!/bin/sh
+#
+# random	Script to snapshot random state and reload it at boot time.
+#
+# Author:       Theodore Ts'o <tytso@mit.edu>
+#
+
+random_seed=/var/run/random-seed
+
+# See how we were called.
+case "$1" in
+  start)
+	echo "Initializing random number generator..."
+	# Carry a random seed from start-up to start-up
+	# Load and then save 512 bytes, which is the size of the entropy pool
+	if [ -f $random_seed ]; then
+		cat $random_seed >/dev/urandom
+	fi
+	dd if=/dev/urandom of=$random_seed count=1 bs=512 2>/dev/null
+	touch /var/lock/subsys/random
+
+	;;
+  stop)
+	# Carry a random seed from shut-down to start-up
+	# Save 512 bytes, which is the size of the entropy pool
+	echo "Saving random seed..."
+	dd if=/dev/urandom of=$random_seed count=1 bs=512 2>/dev/null
+	
+	rm -f /var/lock/subsys/random
+	;;
+  *)
+	echo "Usage: random {start|stop}"
+	exit 1
+esac
+
+exit 0
+