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

void *msgQueueOpen(msgQueueId queueId)
{
	int queueFd;
	void *queueAddr;

	queueFd = shm_open(queueId, O_RDWR, SHM_DEFAULT_MODE);
	if (queueFd == -1) {
		NZG_ERROR("shm_open : msgQueue open", queueId);
		goto ERROR;
	}

	queueAddr = mmap(NULL,
			 sizeof(msgQueue),
			 PROT_READ | PROT_WRITE, MAP_SHARED, queueFd, 0);
	if (queueAddr == MAP_FAILED) {
		NZG_ERROR("mmap", queueId);
		goto ERROR;
	}

	close(queueFd);
	return queueAddr;
 ERROR:
	return NULL;
}