#include "libnazgul.h"
#include "ids.h"

// cree un nouvel elemen
void *msgSpaceListElemOpen(msgSpaceListElemId listElemId)
{
	int listElemFd;
	void *listElemAddr;

	listElemFd = shm_open(listElemId, O_RDWR, SHM_DEFAULT_MODE);
	if (listElemFd == -1) {
		NZG_ERROR("shm_open : msgSpaceListElem open", listElemId);
		goto ERROR;
	}

	listElemAddr = mmap(NULL,
			    sizeof(msgQueueElem),
			    PROT_READ | PROT_WRITE, MAP_SHARED, listElemFd, 0);

	if (listElemAddr == MAP_FAILED) {
		NZG_ERROR("mmap", listElemId);
		goto ERROR;
	}

	close(listElemFd);
	return listElemAddr;
 ERROR:
	return NULL;

};