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

/* prototypes des fonctions annexes à ne pas exporter */
int msgSpaceIdIntern(msgSpaceId dest, const msgSpaceId src);
int msgPoolDataIdIntern(msgSpaceId dest, const msgSpaceId src);

msgSpace *msgSpaceOpen(msgSpaceId externId)
{
	int shmFd;
	msgSpaceId nzgId;
	msgSpace *mSAddr;
	if (msgSpaceIdIntern(nzgId, externId) < 0) {
		return NULL;
	}
	if ((shmFd = shm_open(nzgId, O_RDWR, MSGSPACE_DEFAULT_MODE)) < 0) {
		perror("shm_open");
		return NULL;
	}
	mSAddr =
	    mmap(NULL, sizeof(msgSpace), PROT_READ | PROT_WRITE, MAP_SHARED,
		 shmFd, (off_t) 0);

	printf("OPEN: msgSpace mapped to %p in %d\n", (void *)mSAddr,
	       (int)getpid());
	return mSAddr;
}