VINUM_DAEMON_DEV_NAME
if (mknod(VINUM_DAEMON_DEV_NAME, /* daemon super device */
fprintf(stderr, "Can't create %s: %s\n", VINUM_DAEMON_DEV_NAME, strerror(errno));
superdev = open(VINUM_DAEMON_DEV_NAME, O_RDWR); /* open deamon superdevice */
perror("Can't open " VINUM_DAEMON_DEV_NAME);