if (optlen < sizeof(__u32))
if (optlen != sizeof(struct sctp_setadaption))
static int sctp_setsockopt_adaption_layer(struct sock *sk, char __user *optval,					  int optlen){	__u32 val;	if (optlen < sizeof(__u32))		return -EINVAL;	if (copy_from_user(&val, optval, sizeof(__u32)))		return -EFAULT;	sctp_sk(sk)->adaption_ind = val;	return 0;}