random: update initskript for machines with low entropy

[ipfire-2.x.git] / src / initscripts / system / random

diff --git a/src/initscripts/system/random b/src/initscripts/system/random
index 57aef99d42bb2fb689015011ce86f675698481fa..1f825cd183e4ad9191e720791f17e4b0da8d1bb1 100644 (file)
--- a/src/initscripts/system/random
+++ b/src/initscripts/system/random
@@ -1,28 +1,45 @@
 #!/bin/sh
-# Begin $rc_base/init.d/random
-
-# Based on sysklogd script from LFS-3.1 and earlier.
-# Rewritten by Gerard Beekmans  - gerard@linuxfromscratch.org
-# Random script elements by Larry Lawrence
-
 . /etc/sysconfig/rc
 . $rc_functions
 
+if [ -e /proc/sys/kernel/random/poolsize ]; then
+       poolsize=$(</proc/sys/kernel/random/poolsize);
+       poolsize=$(expr $poolsize / 8 );
+else
+       poolsize=512;
+fi
+
 case "$1" in
        start)
-               boot_mesg "Initializing kernel random number generator..."
+
+               #CRNG init need 128bit so wait until there is more)
+               avail=$(</proc/sys/kernel/random/entropy_avail)
+               while [ $avail -lt 130 ]; do
+                       avail=$(</proc/sys/kernel/random/entropy_avail)
+                       boot_mesg -n "\rWait for entropy: $avail/130   "
+                       # Generate some disc access to gather entropy
+                       echo  avail > /var/tmp/random-tmpfile
+                       sync
+                       rm -f /var/tmp/random-tmpfile
+               done;
+
+               boot_mesg "\rInitializing kernel random number generator..."
                if [ -f /var/tmp/random-seed ]; then
                        /bin/cat /var/tmp/random-seed >/dev/urandom
                fi
+               touch /var/tmp/random-seed
+               chmod 600 /var/tmp/random-seed
                /bin/dd if=/dev/urandom of=/var/tmp/random-seed \
-                       count=4 &>/dev/null
+                       count=1 bs=$poolsize &>/dev/null
                evaluate_retval
                ;;
 
        stop)
                boot_mesg "Saving random seed..."
+               touch /var/tmp/random-seed
+               chmod 600 /var/tmp/random-seed
                /bin/dd if=/dev/urandom of=/var/tmp/random-seed \
-                       count=4 &>/dev/null
+                       count=1 bs=$poolsize &>/dev/null
                evaluate_retval
                ;;