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authorErik Troan <ewt@redhat.com>1997-09-16 14:12:05 +0000
committerErik Troan <ewt@redhat.com>1997-09-16 14:12:05 +0000
commitced9dffda28f1ec2b060f3e419cf3c6b964b03a1 (patch)
treeda3f56c24861ddc77e2910291c71adc12dca136b /rc.d/init.d/random
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Initial revision
Diffstat (limited to 'rc.d/init.d/random')
-rwxr-xr-xrc.d/init.d/random37
1 files changed, 37 insertions, 0 deletions
diff --git a/rc.d/init.d/random b/rc.d/init.d/random
new file mode 100755
index 00000000..348f0295
--- /dev/null
+++ b/rc.d/init.d/random
@@ -0,0 +1,37 @@
+#!/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
+