--- libaitsess/src/sess.c	2011/09/07 16:08:41	1.3.2.2
+++ libaitsess/src/sess.c	2011/09/07 23:38:39	1.3.2.5
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: sess.c,v 1.3.2.2 2011/09/07 16:08:41 misho Exp $
+* $Id: sess.c,v 1.3.2.5 2011/09/07 23:38:39 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -340,6 +340,10 @@ sess_prepareSession(tagSess * __restrict s, u_char use
 		sess_SetErr(EINVAL, "Error:: invalid argument\n");
 		return NULL;
 	}
+	if (s->addr) {
+		sess_SetErr(EINVAL, "Error:: already attached memory\n");
+		return NULL;
+	}
 
 	ATTACH_MEMORY(s);
 	if (!s->addr)
@@ -359,8 +363,7 @@ sess_prepareSession(tagSess * __restrict s, u_char use
 			hdr->hdr_argc, useDirect);
 	ADD_SEMAPHORE(s, ret);
 
-	if (!s->zcopy)
-		DETACH_MEMORY(s);
+	DETACH_MEMORY(s);
 	return arr;
 }
 
@@ -381,8 +384,6 @@ sess_doneSession(tagSess * __restrict s, array_t ** __
 
 	if (!s->zcopy)
 		io_arrayFree(*arr);
-	else
-		DETACH_MEMORY(s);
 	io_arrayDestroy(arr);
 }
 
@@ -404,31 +405,21 @@ sess_commitSession(tagSess * __restrict s, array_t * _
 		return -1;
 	}
 
-	if (!s->zcopy)
-		ATTACH_MEMORY(s);
+	ATTACH_MEMORY(s);
 	if (!s->addr) {
-		if (!s->zcopy)
-			DETACH_MEMORY(s);
-
+		DETACH_MEMORY(s);
 		return -1;
 	} else
 		hdr = (sess_hdr_t*) s->addr;
-	if (hdr->hdr_magic != SESS_AIT_MAGIC) {
-		if (!s->zcopy)
-			DETACH_MEMORY(s);
 
-		sess_SetErr(EINVAL, "Error:: shared memory not contains values with proper format\n");
-		return -1;
-	}
-
 	DEC_SEMAPHORE(s, rs);
 	if ((ret = io_vals2map(s->addr + sizeof(sess_hdr_t), s->eom - sizeof(sess_hdr_t), arr)) != -1) {
+		hdr->hdr_magic = SESS_AIT_MAGIC;
 		hdr->hdr_argc = io_arraySize(arr);
 		ret += sizeof(sess_hdr_t);
 	}
 	ADD_SEMAPHORE(s, rs);
 
-	if (!s->zcopy)
-		DETACH_MEMORY(s);
+	DETACH_MEMORY(s);
 	return ret;
 }