diff --git a/src/nzg_allocate.c b/src/nzg_allocate.c
index 1ad73a5..f509af0 100644
--- a/src/nzg_allocate.c
+++ b/src/nzg_allocate.c
@@ -73,12 +73,14 @@ void * msgAllocate(msgSpace *space,
 		msgPoolSemIdIntern(ressourceSemId,space->id,i);
 		ressourceSemFd = sem_open(ressourceSemId,O_CREAT,SEM_DEFAULT_MODE,0);
 		if (ressourceSemFd == SEM_FAILED){ 
-		  perror("sem_open"); return NULL; 
+		  NZG_ERROR("sem_open",ressourceSemId);
+		  return NULL; 
 		}
 		/* on remplit le tableau avec les valeurs des semaphores */
 				
 		if (sem_getvalue(ressourceSemFd, ressourceSemVal) < 0){ 
-		  perror("sem_getvalue"); return NULL; 
+		NZG_ERROR("sem_getvalue",ressourceSemId);
+		return NULL; 
 		}
 
 		if ((*ressourceSemVal) < 0){
@@ -95,7 +97,8 @@ void * msgAllocate(msgSpace *space,
 		  break;
 		}
 	if(	sem_close(ressourceSemFd) <0){
-		  perror("sem_getvalue"); return NULL; 
+		NZG_ERROR("sem_getvalue",ressourceSemId);
+		return NULL; 
 	}
 	  } // if buffSize > taille
 	} // for
@@ -129,13 +132,13 @@ void * msgAllocate(msgSpace *space,
 	msgPoolSemIdIntern(ressourceSemId,space->id,selectedPoolIndex);
 	ressourceSemFd=sem_open(ressourceSemId,O_CREAT,SEM_DEFAULT_MODE,0);
 	if(ressourceSemFd==SEM_FAILED){
-	  perror("sem_open");
+	  NZG_ERROR("sem_open",ressourceSemId);
 	  return NULL;
 	}
   }
 
   if (sem_wait(ressourceSemFd) < 0){
-	perror("sem_wait");
+	NZG_ERROR("sem_wait",ressourceSemId);
 	sem_close(ressourceSemFd);
 	return NULL;
   }		
diff --git a/src/nzg_bufferAttachProc.c b/src/nzg_bufferAttachProc.c
index 8e81bc5..9f83c90 100644
--- a/src/nzg_bufferAttachProc.c
+++ b/src/nzg_bufferAttachProc.c
@@ -16,7 +16,7 @@ int msgBufferAttachProc(
 
   bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
   if (bufferInfoTabFd<0){
-	perror("shm_open");
+	NZG_ERROR("sem_open",bufferInfoTabId);
 	return -1;
   }
 
@@ -29,7 +29,9 @@ int msgBufferAttachProc(
   bufferInfoTabAddr[bufferIndex].addr = addr;
 
   if (munmap(bufferInfoTabAddr,bufferInfoNb*sizeof(msgBufferInfo))< 0)
-  {	perror("munmap"); return -1; }
+  {	
+	NZG_ERROR("munmap",bufferInfoTabId);
+	return -1; }
 
   return 0;
 }
diff --git a/src/nzg_bufferDetachProc.c b/src/nzg_bufferDetachProc.c
index 24b26a4..5b1572e 100644
--- a/src/nzg_bufferDetachProc.c
+++ b/src/nzg_bufferDetachProc.c
@@ -16,7 +16,7 @@ int msgBufferDetachProc(
 
   bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
   if (bufferInfoTabFd<0){
-	perror("shm_open");
+	NZG_ERROR("shm_open",bufferInfoTabId);
 	return -1;
   }
 
@@ -29,7 +29,10 @@ int msgBufferDetachProc(
   bufferInfoTabAddr[bufferIndex].addr = NULL;
 
   if (munmap(bufferInfoTabAddr,bufferInfoNb*sizeof(msgBufferInfo))< 0)
-  {	perror("munmap"); return -1; }
+  {	
+	NZG_ERROR("munmap",bufferInfoTabId);
+	return -1; 
+  }
 
   return 0;
 }
diff --git a/src/nzg_bufferGetFreeIndex.c b/src/nzg_bufferGetFreeIndex.c
index 4a0f9d3..7d698f8 100644
--- a/src/nzg_bufferGetFreeIndex.c
+++ b/src/nzg_bufferGetFreeIndex.c
@@ -8,11 +8,12 @@ int bufferInfoNb;
 int bufferFreeIndex;
 
   //récuperer l'ID du BufferInfoTab;
+  printf("=>%s<=\n",poolDataTabAddr[poolIndex].bufferInfoTabId);
   strcpy(bufferInfoTabId, poolDataTabAddr[poolIndex].bufferInfoTabId);
   
   bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
   if (bufferInfoTabFd<0){
-	perror("shm_open");
+	NZG_ERROR("shm_open",bufferInfoTabId);
 	return -1;
   }
 
@@ -28,7 +29,10 @@ int bufferFreeIndex;
   bufferFreeIndex=i;
   
   if (munmap(bufferInfoTabAddr,bufferInfoNb*sizeof(msgBufferInfo))< 0)
-  {	perror("munmap"); return -1; }
+  {	
+	NZG_ERROR("munmap",bufferInfoTabId);
+	return -1; 
+  }
   
   return bufferFreeIndex;
 }
diff --git a/src/nzg_bufferInfoTabCreate.c b/src/nzg_bufferInfoTabCreate.c
index e33293f..6d716da 100644
--- a/src/nzg_bufferInfoTabCreate.c
+++ b/src/nzg_bufferInfoTabCreate.c
@@ -1,8 +1,37 @@
+#include "libnazgul.h"
+#include "nzg_ids.h"
+
 int msgBufferInfoTabCreate(
-		msgSpaceId externId,
-		int poolIdx,
-		int buffNb) {
-	
-  bufferInfoTabInit(poolIdx);
-  return -1;
+	msgSpaceId externId,
+	msgPoolData * poolDataTabAddr,
+	int poolIdx,
+	int bufferNb) {
+
+  int bufferInfoTabFd;
+  msgBufferInfoTabId bufferInfoTabId;
+
+  /* creation des infos sur buffers DEBUT */
+  if (msgBufferInfoTabIdIntern(bufferInfoTabId,externId,poolIdx) == -1){
+	NZG_ERROR("msgPoolId creation",bufferInfoTabId);
+	return -1;
+  }
+
+  bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR|O_CREAT|O_EXCL|O_TRUNC,MSGSPACE_DEFAULT_MODE);
+  if (bufferInfoTabFd == -1 ) {
+	fprintf( stderr, "msgInfoTab : %s creation failed: %s\n",bufferInfoTabId,
+		strerror( errno ) );
+	return -1;
+  }
+  if (ftruncate(bufferInfoTabFd, bufferNb*sizeof(msgBufferInfo)) == -1){
+	fprintf( stderr, "msgBufferInfoTab resizing failed: %s\n",
+		strerror( errno ) );
+	return -1;
+  }
+  close(bufferInfoTabFd);
+  /* creation des infos sur buffers FIN */	
+
+  msgBufferInfoTabInit(poolDataTabAddr,poolIdx);
+
+  return -1;NZG_ERROR("munmap",bufferInfoTabId);
+	return -1; 
 }
diff --git a/src/nzg_bufferInfoTabInit.c b/src/nzg_bufferInfoTabInit.c
index 38fb8d8..2d3e373 100644
--- a/src/nzg_bufferInfoTabInit.c
+++ b/src/nzg_bufferInfoTabInit.c
@@ -1,6 +1,6 @@
 #include "libnazgul.h"
 
-int msgBufferInit(msgPoolData * poolDataTabAddr,int poolIndex){
+int msgBufferInfoTabInit(msgPoolData * poolDataTabAddr,int poolIndex){
   msgBufferInfoTabId bufferInfoTabId;
 int bufferInfoTabFd;
 msgBufferInfo * bufferInfoTabAddr;
@@ -8,17 +8,19 @@ int bufferInfoNb;
 
   //récuperer l'ID du BufferInfoTab;
   strcpy(bufferInfoTabId, poolDataTabAddr[poolIndex].bufferInfoTabId);
-  
+ 
+  printf("msgBufferInfoTabId %d open >>%s<<\n",poolIndex,bufferInfoTabId);
   bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
   if (bufferInfoTabFd<0){
-	perror("shm_open");
+	NZG_ERROR("msgBufferInfoTabId open",bufferInfoTabId);
 	return -1;
   }
 
   /** on regarde dans le tableau d'infos de buffer **/
   bufferInfoNb=poolDataTabAddr[poolIndex].bufferNb;
   bufferInfoTabAddr=mmap(NULL,bufferInfoNb*sizeof(msgBufferInfo),
-	  PROT_READ,MAP_SHARED,bufferInfoTabFd,(off_t)0);
+	  PROT_WRITE|PROT_READ,MAP_SHARED,bufferInfoTabFd,(off_t)0);
+  printf("fd ?\n"); fflush(stdout);
 
   int i;
   for (i=0;i<bufferInfoNb;i++){
diff --git a/src/nzg_bufferInit.c b/src/nzg_bufferInit.c
deleted file mode 100644
index 38fb8d8..0000000
--- a/src/nzg_bufferInit.c
+++ /dev/null
@@ -1,33 +0,0 @@
-#include "libnazgul.h"
-
-int msgBufferInit(msgPoolData * poolDataTabAddr,int poolIndex){
-  msgBufferInfoTabId bufferInfoTabId;
-int bufferInfoTabFd;
-msgBufferInfo * bufferInfoTabAddr;
-int bufferInfoNb;  
-
-  //récuperer l'ID du BufferInfoTab;
-  strcpy(bufferInfoTabId, poolDataTabAddr[poolIndex].bufferInfoTabId);
-  
-  bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
-  if (bufferInfoTabFd<0){
-	perror("shm_open");
-	return -1;
-  }
-
-  /** on regarde dans le tableau d'infos de buffer **/
-  bufferInfoNb=poolDataTabAddr[poolIndex].bufferNb;
-  bufferInfoTabAddr=mmap(NULL,bufferInfoNb*sizeof(msgBufferInfo),
-	  PROT_READ,MAP_SHARED,bufferInfoTabFd,(off_t)0);
-
-  int i;
-  for (i=0;i<bufferInfoNb;i++){
-	bufferInfoTabAddr[i].ownerPid = (pid_t)-1;
-  }
-  
-  if (munmap(bufferInfoTabAddr,bufferInfoNb*sizeof(msgBufferInfo))< 0)
-  {	perror("munmap"); return -1; }
-
-  return 0;
-}
-
diff --git a/src/nzg_global.h b/src/nzg_global.h
index 68fb7ce..74c4700 100644
--- a/src/nzg_global.h
+++ b/src/nzg_global.h
@@ -22,4 +22,6 @@
 #define SEM_FAILED ((sem_t *)0)
 #endif
 
+#define NZG_ERROR(func,str) fprintf(stderr,"%s: %s\n%s in %s:%d\n",func,strerror(errno),str,__FILE__,__LINE__);
+
 #endif
diff --git a/src/nzg_poolCreate.c b/src/nzg_poolCreate.c
index b984c6e..5670ce9 100644
--- a/src/nzg_poolCreate.c
+++ b/src/nzg_poolCreate.c
@@ -2,66 +2,45 @@
 #include "nzg_ids.h"
 
 int msgPoolCreate(
-		msgSpaceId spaceId,
+		msgSpaceId externId,
 		int poolIdx,
 		int buffNb,
 		int buffSize
 	) {
 	
 	int poolFd;
-	int bufferTabFd;
 	sem_t * ressourceSem;
 	msgPoolId poolId;
-	msgBufferInfoTabId bufferInfoTabId;
 	msgPoolSemId poolRessourceSemId;
 
-	
-	/* creation des infos sur buffers DEBUT */
-	if (msgBufferInfoTabIdIntern(bufferInfoTabId,spaceId,poolIdx) == -1){
-	  fprintf( stderr, "msgPoolId creation failed for id %s\n", (char*)poolId );
-	  return -1;
-	}
-	bufferTabFd=shm_open(bufferInfoTabId,O_RDWR|O_CREAT|O_EXCL|O_TRUNC,MSGSPACE_DEFAULT_MODE);
-	if (bufferTabFd == -1 ) {
-	fprintf( stderr, "msgInfoTab : %s creation failed: %s\n",bufferInfoTabId,
-		strerror( errno ) );
-	return -1;
-	}
-	if (ftruncate(bufferTabFd, buffNb*sizeof(msgBufferInfo)) == -1){
-	fprintf( stderr, "msgBufferInfoTab resizing failed: %s\n",
-		strerror( errno ) );
-	return -1;
-  }
- /* creation des infos sur buffers FIN */	
-	
 	/* creation des buffers DEBUT */
-	if (msgPoolIdIntern(poolId,spaceId,poolIdx) == -1){
+	if (msgPoolIdIntern(poolId,externId,poolIdx) == -1){
 	  fprintf( stderr, "msgPoolId creation failed for id %s\n", (char*)poolId );
 	  return -1;
 	}
 	poolFd=shm_open(poolId,O_RDWR|O_CREAT|O_EXCL|O_TRUNC,MSGSPACE_DEFAULT_MODE);
 	if (poolFd == -1 ) {
-	fprintf( stderr, "msgPool : %s creation failed: %s\n",poolId,
-		strerror( errno ) );
-	return -1;
+	  fprintf( stderr, "msgPool : %s creation failed: %s\n",poolId,
+		  strerror( errno ) );
+	  return -1;
 	}
 	if (ftruncate(poolFd, (buffSize*buffNb)) == -1){
-	fprintf( stderr, "msgPool resizing failed: %s\n",
-		strerror( errno ) );
-	return -1;
-  }
- /* creation des buffers FIN */
-	
-	if (msgPoolSemIdIntern(poolRessourceSemId,spaceId,poolIdx) == -1){
+	  fprintf( stderr, "msgPool resizing failed: %s\n",
+		  strerror( errno ) );
+	  return -1;
+	}
+	/* creation des buffers FIN */
+
+	if (msgPoolSemIdIntern(poolRessourceSemId,externId,poolIdx) == -1){
 	  fprintf( stderr, "msgPoolId creation failed for id %s\n",
-		(char*)poolRessourceSemId );
+		  (char*)poolRessourceSemId );
 	  return -1;
 	}
 
 	// on met un semaphore sur le pool
 	ressourceSem = sem_open(poolRessourceSemId, O_CREAT|O_EXCL, 0666, buffNb);
 	//TODO: verrifier les erreurs sur l'ouverture de la sem
-	
+
 	// on met le pool a la taille voulue pour qu'il
 	// puisse contenir les buffs
 
diff --git a/src/nzg_proto.h b/src/nzg_proto.h
index 7ff6547..869e3aa 100644
--- a/src/nzg_proto.h
+++ b/src/nzg_proto.h
@@ -1,26 +1,39 @@
 #ifndef _NZG_PROTO
 #define _NZG_PROTO 1
 
-/* src/nzg_allocate.c */
+/* nzg_allocate.c */
 void *msgAllocate(msgSpace *space, int pool, int taille, int option);
-/* src/nzg_list.c */
-/* src/nzg_msgList.c */
+/* nzg_bufferAttachProc.c */
+int msgBufferAttachProc(msgPoolData *poolDataTabAddr, int poolIndex, int bufferIndex, void *addr);
+/* nzg_buffer.c */
+int msgBufferGetAttachedProcIndex(msgPoolData *poolDataTabAddr, int poolIndex, void *addr);
+/* nzg_bufferDetachProc.c */
+int msgBufferDetachProc(msgPoolData *poolDataTabAddr, int poolIndex, int bufferIndex, void *addr);
+/* nzg_bufferGetFreeIndex.c */
+int msgBufferGetFreeIndex(msgPoolData *poolDataTabAddr, int poolIndex);
+/* nzg_bufferInfoTabCreate.c */
+int msgBufferInfoTabCreate(msgSpaceId externId,msgPoolData * poolDataTabAddr, int poolIdx, int buffNb);
+/* nzg_bufferInfoTabInit.c */
+int msgBufferInfoTabInit(msgPoolData *poolDataTabAddr, int poolIndex);
+/* nzg_ids.c */
+int msgSpaceIdIntern(msgSpaceId dest, const msgSpaceId src);
+int msgPoolSemIdIntern(msgPoolSemId destSemId, const msgSpaceId srcPoolId, int poolIdx);
+int msgPoolDataIdIntern(msgPoolDataTabId dest, const msgSpaceId src);
+int msgPoolIdIntern(msgPoolId dest, msgPoolId src, int num);
+int msgBufferInfoTabIdIntern(msgBufferInfoTabId dest, msgSpaceId src, int num);
+/* nzg_list.c */
+/* nzg_msgList.c */
 msgSpaceListElem *addBegining(msgSpaceListElem *list, int ownerpid);
-/* src/nzg_pool.c */
-int msgPoolCreate(msgSpaceId spaceId, int poolIdx, int buffNb, int buffSize);
-/* src/nzg_spaces.c */
-msgSpace *msgSpaceCreate(msgSpaceId spaceId, int queueNb, int poolNb, msgPool *poolInfos);
+/* nzg_poolCreate.c */
+int msgPoolCreate(msgSpaceId externId, int poolIdx, int buffNb, int buffSize);
+/* nzg_poolDelete.c */
+int msgPoolDelete(msgSpaceId spaceId, int poolIdx);
+/* nzg_spaceCreate.c */
+msgSpace *msgSpaceCreate(msgSpaceId externId, int queueNb, int poolNb, msgPool *poolInfos);
+/* nzg_spaceDelete.c */
+int msgSpaceDelete(msgSpaceId externId);
+/* nzg_spaceOpen.c */
 msgSpace *msgSpaceOpen(msgSpaceId spaceId);
-int msgSpaceDelete(msgSpaceId spaceId);
-/* src/nzg_buffer.c */
-int msgBufferGetFreeIndex(msgPoolData * poolDataTab, int poolIndex);
-int msgBufferAttachProc(msgPoolData * poolDataTab, int poolIndex, int bufferIndex,void *addr);
-int msgBufferInfoTabIdIntern(
-	msgBufferInfoTabId dest,
-	msgSpaceId src, 
-	int num);
-int msgPoolDelete(
-		msgSpaceId spaceId,
-		int poolIdx
-	);
+/* nzg_state.c */
+
 #endif
diff --git a/src/nzg_spaceCreate.c b/src/nzg_spaceCreate.c
index 0bd4d63..f410e7e 100644
--- a/src/nzg_spaceCreate.c
+++ b/src/nzg_spaceCreate.c
@@ -13,7 +13,7 @@ int msgPoolDataIdIntern(msgSpaceId dest,const msgSpaceId src );
  */
 
 msgSpace * msgSpaceCreate(
-	msgSpaceId spaceId, 
+	msgSpaceId externId, 
 	int queueNb, 
 	int poolNb, 
 	msgPool * poolInfos ){
@@ -25,10 +25,11 @@ msgSpace * msgSpaceCreate(
   static int mSIdNum=-1;
   msgSpace * mSAddr;
 
-  msgPoolId poolDataTabId;
+  msgPoolDataTabId poolDataTabId;
   msgPoolData * mSPoolDataAddr; 
+  msgBufferInfoTabId bufferInfoTabId;
+  msgPoolId poolId;
 
-  fprintf(stderr,"Creating msgSpace with id : %s\n",spaceId);
 
   mSIdNum++;
   mSAddr=NULL;
@@ -37,19 +38,17 @@ msgSpace * msgSpaceCreate(
 
   /** on créee le nouvel element **/
   printf("PAGESIZE : %d\n",(int)PAGESIZE);
-  if (msgSpaceIdIntern(nzgId,spaceId) < 0){
+  if (msgSpaceIdIntern(nzgId,externId) < 0){
 	return NULL;
   }
-  printf("Id interne : %s\n",nzgId);
+  fprintf(stderr,"Creating msgSpace with id : %s\n",nzgId);
   mSFd=shm_open(
 	  nzgId,
 	  O_RDWR|O_CREAT|O_EXCL|O_TRUNC,
 	  MSGSPACE_DEFAULT_MODE
 	  );
   if (mSFd == -1 ) {
-	fprintf( stderr, "msgSpace %s creation failed: %s\n",
-		(char*)nzgId,
-		strerror( errno ) );
+	NZG_ERROR("shm_open : msgSpace creation",nzgId);
 	return NULL;
   }
 
@@ -76,13 +75,13 @@ msgSpace * msgSpaceCreate(
   close(mSFd);
 
   /* on remplit la structure */
-  strncpy(mSAddr->id,nzgId,MSGSPACE_ID_LEN);
+  strncpy(mSAddr->id,externId,MSGSPACE_ID_LEN);
   mSAddr->poolNb=poolNb;
   mSAddr->queueNb=queueNb;
   mSAddr->pid=getpid();
 
   /*  creation du poolData */
-  msgPoolDataIdIntern(poolDataTabId,spaceId);
+  msgPoolDataIdIntern(poolDataTabId,externId);
   strcpy(mSAddr->poolDataTabId,poolDataTabId);
 
   mSPoolDataFd=shm_open(
@@ -125,14 +124,22 @@ msgSpace * msgSpaceCreate(
 	mSPoolDataAddr[i].bufferSize=poolInfos[i].bufferSize;
 	mSPoolDataAddr[i].allocDispBuffer=0;
 
-	msgPoolId poolId;
-	if (msgPoolIdIntern(poolId,spaceId,i) == -1){
+	if (msgBufferInfoTabIdIntern(bufferInfoTabId,externId,i) == -1){
+	  fprintf( stderr, "msgBufferInfoTabId creation failed for id %s\n",
+		  (char*)poolId );
+	  return NULL;
+	}	
+	strcpy(mSPoolDataAddr[i].bufferInfoTabId,bufferInfoTabId);
+	printf("buffIfoTab %d name : %s\n",i,mSPoolDataAddr[i].bufferInfoTabId);
+	msgBufferInfoTabCreate(externId,mSPoolDataAddr,i,poolInfos[i].bufferNb);
+
+		if (msgPoolIdIntern(poolId,externId,i) == -1){
 	  fprintf( stderr, "msgPoolId creation failed for id %s\n",
 		(char*)poolId );
 	  return NULL;
 	}
-	msgPoolCreate(spaceId,i,poolInfos[i].bufferNb,poolInfos[i].bufferSize);
 	strcpy(mSPoolDataAddr[i].id,poolId);
+	msgPoolCreate(externId,i,poolInfos[i].bufferNb,poolInfos[i].bufferSize);
 
   }
 
diff --git a/test/create_delete.c b/test/create_delete.c
index da62b63..5ca435b 100644
--- a/test/create_delete.c
+++ b/test/create_delete.c
@@ -8,17 +8,21 @@ int main(void) {
   msgSpaceId testId;
   msgSpace * mSPAC;
   msgPool poolInfos[2];
+  char * montext;
 
   poolInfos[0].bufferNb=4;
   poolInfos[0].bufferSize=200;
   
-  poolInfos[1].bufferNb=1;
-  poolInfos[1].bufferSize=700;
+  poolInfos[1].bufferNb=5;
+  poolInfos[1].bufferSize=250;
   
   strcpy(testId,"test");
   printf("RequestedId: %s\n",testId);
   
   mSPAC=msgSpaceCreate(testId,0,2,poolInfos);
+  
+  montext=msgAllocate(mSPAC,1,200,0);
+
   msgSpaceDelete(testId);
 
   return 0;