l3.libnazgul/src/poolDataTabOpen.c

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

void *msgPoolDataTabOpen(msgSpace * space)
{
	int poolDataTabFd;
	void *poolDataTabAddr;

	poolDataTabFd = shm_open(space->poolDataTabId,
				 O_RDWR, MSGSPACE_DEFAULT_MODE);
	if (poolDataTabFd == -1) {
		NZG_ERROR("shm_open", space->poolDataTabId);
		goto ERROR;
	}

	poolDataTabAddr = mmap(NULL, (space->poolNb) * sizeof(msgPoolData),
			       PROT_READ | PROT_WRITE,
			       MAP_SHARED, poolDataTabFd, 0);

	if (poolDataTabAddr == MAP_FAILED) {
		NZG_ERROR("mmap", space->poolDataTabId);
		goto ERROR;
	}

	close(poolDataTabFd);

	return poolDataTabAddr;
 ERROR:
	return NULL;
}