CDEV_DEVICE
CDEV_DEVICE);
printf("Written \"%s\" string to device /dev/" CDEV_DEVICE "\n",
printf("Read \"%s\" string from device /dev/" CDEV_DEVICE "\n",
if ((kernel_fd = open("/dev/" CDEV_DEVICE, O_RDWR)) == -1) {
perror("/dev/" CDEV_DEVICE);