Author: toad
Date: 2008-11-28 17:44:21 +0000 (Fri, 28 Nov 2008)
New Revision: 23954
Modified:
trunk/freenet/src/freenet/store/saltedhash/SaltedHashFreenetStore.java
Log:
Logging
Modified: trunk/freenet/src/freenet/store/saltedhash/SaltedHashFreenetStore.java
===================================================================
--- trunk/freenet/src/freenet/store/saltedhash/SaltedHashFreenetStore.java
2008-11-28 17:40:40 UTC (rev 23953)
+++ trunk/freenet/src/freenet/store/saltedhash/SaltedHashFreenetStore.java
2008-11-28 17:44:21 UTC (rev 23954)
@@ -742,6 +742,14 @@
final long newHdLen = (headerBlockLength +
dataBlockLength + hdPadding) * storeFileSize;
if (preallocate) {
+ /*
+ * Fill the store file with random data. This
won't be compressed, unlike filling it with zeros.
+ * So the disk space usage of the node will not
change (apart from temp files).
+ *
+ * Note that MersenneTwister is *not*
cryptographically secure, in fact from 2.4KB of output you
+ * can predict the rest of the stream! This is
okay because an attacker knows which blocks are
+ * occupied anyway; it is essential to label
them to get good data retention on resizing etc.
+ */
byte[] b = new byte[4096];
ByteBuffer bf = ByteBuffer.wrap(b);
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