spec_ioctl
.vop_ioctl = spec_ioctl,
.vop_ioctl = spec_ioctl,
.vop_ioctl = spec_ioctl,
int spec_ioctl(void *);
.vop_ioctl = spec_ioctl,
.vop_ioctl = spec_ioctl,
.vop_ioctl = spec_ioctl,