diff --git a/src/allocate.c b/src/allocate.c
index 36c98d5..d4ee11e 100644
--- a/src/allocate.c
+++ b/src/allocate.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 /* TODO: remplacer le bool de msgPoolData par un identifiant
    de semaphore. Le semaphore contient poolNb valeurs (et indique
diff --git a/src/bufferInfoTabCreate.c b/src/bufferInfoTabCreate.c
index 6d716da..06b0037 100644
--- a/src/bufferInfoTabCreate.c
+++ b/src/bufferInfoTabCreate.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 int msgBufferInfoTabCreate(
 	msgSpaceId externId,
diff --git a/src/ids.c b/src/ids.c
index 3a17866..88247d6 100644
--- a/src/ids.c
+++ b/src/ids.c
@@ -2,7 +2,7 @@
 #define _NZG_IDS 1
 
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 int msgSpaceIdIntern(msgSpaceId dest,const msgSpaceId src ){
   if (strlen(src)>MSGSPACE_ID_LEN){
diff --git a/src/ids.h b/src/ids.h
index 63a1b15..6dcd08c 100644
--- a/src/ids.h
+++ b/src/ids.h
@@ -2,7 +2,6 @@
 #define _NZG_IDS 1
 
 #include "libnazgul.h"
-#include "nzg_ids.h"
 
 /* nzg_ids.c */
 int msgSpaceIdIntern(msgSpaceId dest, const msgSpaceId src);
diff --git a/src/iface.h b/src/iface.h
index cdc2864..863b5a4 100644
--- a/src/iface.h
+++ b/src/iface.h
@@ -1,7 +1,7 @@
 #ifndef _NZG_IFACE
 #define _NZG_IFACE 1
 
-#include "nzg_global.h"
+#include "global.h"
 
 typedef enum { true=1, false=0} bool;
 
@@ -21,6 +21,7 @@ typedef char msgPoolSemId[4*MSGSPACE_ID_LEN];
 
 typedef char msgQueueDataId[4*MSGSPACE_ID_LEN];
 typedef char msgQueueId[4*MSGSPACE_ID_LEN];
+typedef char msgQueueSemId[4*MSGSPACE_ID_LEN];
 
   /* pid[] */
   /* liste des processus demandeurs */ 
diff --git a/src/libnazgul.h b/src/libnazgul.h
index ef5a98a..c7d47b2 100644
--- a/src/libnazgul.h
+++ b/src/libnazgul.h
@@ -1,8 +1,8 @@
 #ifndef _LIBNAZGUL
 #define _LIBNAZGUL 1
 
-#include "nzg_global.h"
-#include "nzg_iface.h"
-#include "nzg_proto.h"
+#include "global.h"
+#include "iface.h"
+#include "proto.h"
 
 #endif
diff --git a/src/poolCreate.c b/src/poolCreate.c
index 41deaa4..f23d218 100644
--- a/src/poolCreate.c
+++ b/src/poolCreate.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 int msgPoolCreate(
 		msgSpaceId externId,
diff --git a/src/poolDelete.c b/src/poolDelete.c
index 70c9316..4fcecb2 100644
--- a/src/poolDelete.c
+++ b/src/poolDelete.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 int msgPoolDelete(
 		msgSpaceId spaceId,
diff --git a/src/queueLock.c b/src/queueLock.c
index e69de29..879af78 100644
--- a/src/queueLock.c
+++ b/src/queueLock.c
@@ -0,0 +1,14 @@
+#include "libnazgul.h"
+
+int queueLock(msgSpaceId spaceid,int queueIdx){
+  sem_t * queueSemFd;
+  msgQueueSemId queueSemId;
+
+  queueSemFd=sem_open(queueSemId,O_CREAT|O_EXCL,0666,1);
+  if(queueSemFd==SEM_FAILED){
+				NZG_ERROR("sem_open",queueSemId);
+				return -1;
+		}
+  return -1;
+}
+
diff --git a/src/queueUnlock.c b/src/queueUnlock.c
index e69de29..46f702d 100644
--- a/src/queueUnlock.c
+++ b/src/queueUnlock.c
@@ -0,0 +1,5 @@
+#include "libnazgul.h"
+
+int queueUnlock(msgSpaceId spaceid,int queueIdx){
+  return -1;
+}
diff --git a/src/spaceCreate.c b/src/spaceCreate.c
index ec64ac6..4564e78 100644
--- a/src/spaceCreate.c
+++ b/src/spaceCreate.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 /* prototypes des fonctions annexes à ne pas exporter */
 int msgSpaceIdIntern(msgSpaceId dest,const msgSpaceId src );
diff --git a/src/spaceDelete.c b/src/spaceDelete.c
index f7e9247..43fd717 100644
--- a/src/spaceDelete.c
+++ b/src/spaceDelete.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 /* prototypes des fonctions annexes à ne pas exporter */
 int msgSpaceIdIntern(msgSpaceId dest,const msgSpaceId src );
diff --git a/src/spaceOpen.c b/src/spaceOpen.c
index ec21eeb..d04ccf7 100644
--- a/src/spaceOpen.c
+++ b/src/spaceOpen.c
@@ -1,5 +1,5 @@
 #include "libnazgul.h"
-#include "nzg_ids.h"
+#include "ids.h"
 
 /* prototypes des fonctions annexes à ne pas exporter */
 int msgSpaceIdIntern(msgSpaceId dest,const msgSpaceId src );