Corpus for ioctl$TUNGETFEATURES:

Coverage	Program
195	openat$tun-ioctl$TUNGETFEATURES
117	openat$tun-ioctl$TUNGETFEATURES
117	openat$tun-ioctl$TUNGETFEATURES
106	pipe2-ioctl$TUNGETFEATURES
48	openat$tun-ioctl$TUNGETFEATURES