--- libaitsync/inc/defs.h	2012/07/22 22:09:47	1.3
+++ libaitsync/inc/defs.h	2012/11/13 14:19:39	1.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: defs.h,v 1.3 2012/07/22 22:09:47 misho Exp $
+* $Id: defs.h,v 1.4 2012/11/13 14:19:39 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -51,15 +51,33 @@ SUCH DAMAGE.
 #define STRSIZ		256
 #endif
 
+#define DIFF_D0		'='
+#define DIFF_D1		'-'
+#define DIFF_D2		'+'
+
+#define CHUNK_MAX	4096
+#define DLTSYNC_MAGIC	0xDEBAC0DA
+#define SIGSYNC_MAGIC	0xDEADBEEF
+
 #define TABLESIZ	(1 << 16)
 #define NULL_TAG	(-1)
 
 #define GETTAG2(s1, s2)	(((s1) + (s2)) & 0xFFFF)
 #define GETTAG(sum)	GETTAG2((sum) & 0xFFFF, (sum) >> 16)
 
-#define SETERR	syncSetErr(errno, strerror(errno));
+#define LOGERR		sync_SetErr(errno, strerror(errno))
 
 
+typedef struct tagSyncChunk {
+	u_int sc_magic;
+	u_long sc_id;
+	off_t sc_off;
+	size_t sc_len;
+	u_int sc_roll;
+	u_char sc_cksum[MD5_DIGEST_LENGTH];
+} sync_chunk_t;
+
+
 typedef struct tagSyncTag {
 	u_long st_id;
 	u_short st_tag;
@@ -72,7 +90,7 @@ struct tagPiece {
 };
 
 
-inline void syncSetErr(int eno, char *estr, ...);
+inline void sync_SetErr(int eno, char *estr, ...);