X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/9e31c4824cabb1bf173f87cbd0abe93f25ea9598..a06d19e3fca289d07ba18c71f39124a0da1ddd4a:/rsync.h

diff --git a/rsync.h b/rsync.h
index 9bd631a1..ce360185 100644
--- a/rsync.h
+++ b/rsync.h
@@ -23,6 +23,11 @@
 #define RSYNC_NAME "rsync"
 #define BACKUP_SUFFIX "~"
 
+/* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
+   imcompatible with older versions :-( */
+#define CHAR_OFFSET 0
+
+
 #define FILE_VALID 1
 #define SAME_MODE (1<<1)
 #define SAME_RDEV (1<<2)
@@ -170,6 +175,7 @@
 #endif
 
 /* the length of the md4 checksum */
+#define MD4_SUM_LENGTH 16
 #define SUM_LENGTH 16
 
 #ifndef MAXPATHLEN
@@ -188,7 +194,7 @@ struct file_struct {
   char *name;
   char *dir;
   char *link;
-  char sum[SUM_LENGTH];
+  char sum[MD4_SUM_LENGTH];
 };
 
 struct file_list {
@@ -202,7 +208,7 @@ struct sum_buf {
   int len;			/* length of chunk of file */
   int i;			/* index of this chunk */
   uint32 sum1;	                /* simple checksum */
-  char sum2[SUM_LENGTH];	/* md4 checksum  */
+  char sum2[SUM_LENGTH];	/* checksum  */
 };
 
 struct sum_struct {