//svmsgmpxnq/mesg_recv.c
ssize_t
Mesg_recv(int id, struct mymesg *mptr)
{
	ssize_t	n;

	do {
		n = mesg_recv(id, mptr);
	} while (n == -1 && errno == EINTR);

	if (n == -1)
		err_sys("mesg_recv error");

	return(n);
}
