slots = malloc(sizeof(*slots) * numSlots);

	chk_rv = C_GetSlotList(FALSE, slots, &numSlots);
	if (chk_rv != CKR_OK) {
		return(1);
	}

	/* Test waiting for slot events */
	currSlot = 0;
	printf("Please insert a card now.\n");

	/* Initially, every slot has changed state (but probably should not) */
	chk_rv = C_WaitForSlotEvent(0, &currSlot, NULL);

	/* This actually waits */
	chk_rv = C_WaitForSlotEvent(0, &currSlot, NULL);
	if (chk_rv != CKR_OK) {
		printf("Failed to wait for slot event.\n");
	}

	/* This just ensures DONT_BLOCK works */
	chk_rv = C_WaitForSlotEvent(CKF_DONT_BLOCK, &currSlot, NULL);

	for (currSlot = 0; currSlot < numSlots; currSlot++) {
		printf("  Slot %lu:\n", currSlot);

		chk_rv = C_GetSlotInfo(slots[currSlot], &slotInfo);
		if (chk_rv != CKR_OK) {
			return(1);
		}