- Per-file dynamic block size is now sqrt(file length).

[rsync/rsync.git] / NEWS

diff --git a/NEWS b/NEWS
index 4a9406c..ec1966d 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,5 @@
 NEWS for rsync version 2.5.7
-Protocol: 26 (unchanged)
+Protocol: 27 (changed)
 Changes since version 2.5.6:
 
   ENHANCEMENTS:
@@ -8,9 +8,31 @@ Changes since version 2.5.6:
       Note that --from0 affects the line-ending character for all the
       --*-from options. (Wayne Davison)
 
+    -  Length of csum2 is now per-file starting with protocol verison
+       27. (J.W. Schultz)
+
+    -   Per-file dynamic block size is now sqrt(file length).
+
+       The per-file checksum size is determined according
+       to an algorythm provided by Donovan Baarda which
+       reduces the probability of rsync algorithm
+       corrupting data and falling back using the whole md4
+       checksums. (J.W. Schultz, Donovan Baarda)
+
   BUG FIXES:
 
-    - Fixed a crash bug when interacting with older rsync versions and
+    -   for protocol version >= 27, mdfour_tail() is called when the
+       block size (including checksum_seed) is a multiple of 64.
+       Previously it was not called, giving the wrong MD4 checksum.
+       (Craig Barratt)
+  
+    -   for protocol version >= 27, a 64 bit bit counter is used in
+       mdfour.c as required by the RFC.  Previously only a 32 bit bit
+       counter was used, causing incorrect MD4 file checksums for
+       file sizes >= 512MB - 4.  (Craig Barratt)
+
+
+    - Fixed a crash bug when interacting with  Craiolder rsync versioss and
       multiple files of the same name are destined for the same dir.
       (Wayne Davison)