--- libaitsess/src/aitsess.c	2008/08/28 13:18:30	1.1.1.1
+++ libaitsess/src/aitsess.c	2011/04/30 22:02:59	1.2.2.1
@@ -1,3 +1,48 @@
+/*************************************************************************
+* (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
+*  by Michael Pounov <misho@openbsd-bg.org>
+*
+* $Author: misho $
+* $Id: aitsess.c,v 1.2.2.1 2011/04/30 22:02:59 misho Exp $
+*
+**************************************************************************
+The ELWIX and AITNET software is distributed under the following
+terms:
+
+All of the documentation and software included in the ELWIX and AITNET
+Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
+
+Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+	by Michael Pounov <misho@elwix.org>.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. All advertising materials mentioning features or use of this software
+   must display the following acknowledgement:
+This product includes software developed by Michael Pounov <misho@elwix.org>
+ELWIX - Embedded LightWeight unIX and its contributors.
+4. Neither the name of AITNET nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+*/
 #include "global.h"
 #include "aitsess.h"
 
@@ -63,7 +108,7 @@ inline int initSession(const int cnID, const char *csF
 	if (!access(csFName, F_OK))
 		ret = 1;
 	// Build new key & new session
-	h = open(csFName, O_WRONLY | O_CREAT, 0640);
+	h = open(csFName, O_WRONLY | O_CREAT, MEM_MODE);
 	if (h == -1) {
 		LOGERR;
 		free(*Sess);
@@ -152,7 +197,7 @@ int map_createSession(const char *csFName, const int c
 		memset(mem, 0, cnSize);
 
 	// create semaphore & add 1
-	(*Sess)->id.sid = sem_open(szSName[0], O_CREAT, 0644);
+	(*Sess)->id.sid = sem_open(szSName[0], O_CREAT, MEM_MODE);
 	if ((*Sess)->id.sid == SEM_FAILED) {
 		LOGERR;
 		map_destroySession(csFName, Sess);
@@ -162,7 +207,7 @@ int map_createSession(const char *csFName, const int c
 		sem_post((*Sess)->id.sid);
 
 	// create file for shared memory storage
-	(*Sess)->mem.fd = open(szSName[1], O_RDWR | O_CREAT, 0644);
+	(*Sess)->mem.fd = open(szSName[1], O_RDWR | O_CREAT, MEM_MODE);
 	if ((*Sess)->mem.fd == -1) {
 		LOGERR;
 		map_destroySession(csFName, Sess);
@@ -252,7 +297,7 @@ int ipc_createSession(const char *csFName, const int c
 	}
 
 	// create semaphore
-	(*Sess)->id.semid = semget((*Sess)->key, 1, 0644 | IPC_CREAT);
+	(*Sess)->id.semid = semget((*Sess)->key, 1, MEM_MODE | IPC_CREAT);
 	if ((*Sess)->id.semid == -1) {
 		LOGERR;
 		ipc_destroySession(csFName, Sess);
@@ -269,7 +314,7 @@ int ipc_createSession(const char *csFName, const int c
 	}
 
 	// create shared memory object
-	(*Sess)->mem.shmid = shmget((*Sess)->key, cnSize, 0644 | IPC_CREAT);
+	(*Sess)->mem.shmid = shmget((*Sess)->key, cnSize, MEM_MODE | IPC_CREAT);
 	if ((*Sess)->mem.shmid == -1) {
 		LOGERR;
 		ipc_destroySession(csFName, Sess);
@@ -387,6 +432,19 @@ inline void ipc_detachSession(tagSess * __restrict s)
 		shmdt(s->addr);
 		s->addr = NULL;
 	}
+}
+
+/*
+ * isAttached() Check for mapped/(attached) shared memory
+ * @s = Session item
+ * return: -1 null session item, 0 not attached, 1 attached memory
+*/
+inline int isAttached(tagSess * __restrict s)
+{
+	if (!s)
+		return -1;
+
+	return (s->addr ? 1 : 0);
 }