--- libaitio/inc/defs.h	2013/01/17 12:56:22	1.8.14.2
+++ libaitio/inc/defs.h	2013/03/13 14:16:12	1.8.14.3
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: defs.h,v 1.8.14.2 2013/01/17 12:56:22 misho Exp $
+* $Id: defs.h,v 1.8.14.3 2013/03/13 14:16:12 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -52,6 +52,11 @@ SUCH DAMAGE.
 #define BUFIO_MODE_LIMIT	0
 #define BUFIO_MODE_INFINIT	1
 
+#define SESS_AIT_MAGIC		0x3CC3
+
+#define SESS_MEM_MODE		0640
+#define SESS_MEM_DELIM		"\xFF"
+
 #define LOGERR	{ \
 			io_Errno = errno; \
 			strlcpy(io_Error, strerror(errno), STRSIZ); \
@@ -67,6 +72,26 @@ struct tagBufIO {
 
 	void 		(*buf_unmap)();
 };
+
+/*
+union semun {
+	int			val;
+	struct semid_ds		*buf;
+	unsigned short int	*array;
+	struct seminfo		*__buf;
+}; */
+#ifndef HAVE_UNION_SEMUN
+union semun {
+	int		val;		/* value for SETVAL */
+	struct semid_ds	*buf;		/* buffer for IPC_STAT & IPC_SET */
+	unsigned short	*array;		/* array for GETALL & SETALL */
+};
+#endif
+
+typedef struct _tagSessHdr {
+	uint16_t	hdr_magic;
+	uint16_t	hdr_argc;
+} sess_hdr_t;
 
 
 extern int io_Errno;