int cq_cmd; /* ioctl command (from ioc_cmd) */
cred_t *cq_cr; /* full credentials */
uint_t cq_id; /* ioctl id (from ioc_id) */
uint_t cq_flag; /* must be zero */
mblk_t *cq_private; /* private state information */
caddr_t cq_addr; /* address to copy data to/from */
size_t cq_size; /* number of bytes to copy */
