Example #1
0
int ipv6_getsockopt(struct sock *sk, int level, int optname,
		    char __user *optval, int __user *optlen)
{
	int err;

	if (level == SOL_IP && sk->sk_type != SOCK_RAW)
		return udp_prot.getsockopt(sk, level, optname, optval, optlen);

	if(level != SOL_IPV6)
		return -ENOPROTOOPT;

	err = do_ipv6_getsockopt(sk, level, optname, optval, optlen, 0);
#ifdef CONFIG_NETFILTER
	/* we need to exclude all possible ENOPROTOOPTs except default case */
	if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
		int len;

		if (get_user(len, optlen))
			return -EFAULT;

		lock_sock(sk);
		err = nf_getsockopt(sk, PF_INET6, optname, optval,
				&len);
		release_sock(sk);
		if (err >= 0)
			err = put_user(len, optlen);
	}
#endif
	return err;
}
int ip_getsockopt(struct sock *sk, int level,
		  int optname, char __user *optval, int __user *optlen)
{
	int err;

	err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0);
#if IS_ENABLED(CONFIG_BPFILTER_UMH)
	if (optname >= BPFILTER_IPT_SO_GET_INFO &&
	    optname < BPFILTER_IPT_GET_MAX)
		err = bpfilter_ip_get_sockopt(sk, optname, optval, optlen);
#endif
#ifdef CONFIG_NETFILTER
	/* we need to exclude all possible ENOPROTOOPTs except default case */
	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
			!ip_mroute_opt(optname)) {
		int len;

		if (get_user(len, optlen))
			return -EFAULT;

		err = nf_getsockopt(sk, PF_INET, optname, optval, &len);
		if (err >= 0)
			err = put_user(len, optlen);
		return err;
	}
#endif
	return err;
}
Example #3
0
int ip_getsockopt(struct sock *sk, int level,
		  int optname, char __user *optval, int __user *optlen)
{
	int err;

	err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0);
#ifdef CONFIG_NETFILTER
	/* we need to exclude all possible ENOPROTOOPTs except default case */
	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
			!ip_mroute_opt(optname)) {
		int len;

		if (get_user(len, optlen))
			return -EFAULT;

		lock_sock(sk);
		err = nf_getsockopt(sk, PF_INET, optname, optval,
				&len);
		release_sock(sk);
		if (err >= 0)
			err = put_user(len, optlen);
		return err;
	}
#endif
	return err;
}
Example #4
0
int ipv6_getsockopt(struct sock *sk, int level, int optname,
		    char __user *optval, int __user *optlen)
{
	struct ipv6_pinfo *np = inet6_sk(sk);
	int len;
	int val;

	if (level == SOL_IP && sk->sk_type != SOCK_RAW)
		return udp_prot.getsockopt(sk, level, optname, optval, optlen);
	if(level!=SOL_IPV6)
		return -ENOPROTOOPT;
	if (get_user(len, optlen))
		return -EFAULT;
	switch (optname) {
	case IPV6_ADDRFORM:
		if (sk->sk_protocol != IPPROTO_UDP &&
		    sk->sk_protocol != IPPROTO_TCP)
			return -EINVAL;
		if (sk->sk_state != TCP_ESTABLISHED)
			return -ENOTCONN;
		val = sk->sk_family;
		break;
	case MCAST_MSFILTER:
	{
		struct group_filter gsf;
		int err;

		if (len < GROUP_FILTER_SIZE(0))
			return -EINVAL;
		if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
			return -EFAULT;
		lock_sock(sk);
		err = ip6_mc_msfget(sk, &gsf,
			(struct group_filter __user *)optval, optlen);
		release_sock(sk);
		return err;
	}

	case IPV6_PKTOPTIONS:
	{
		struct msghdr msg;
		struct sk_buff *skb;

		if (sk->sk_type != SOCK_STREAM)
			return -ENOPROTOOPT;

		msg.msg_control = optval;
		msg.msg_controllen = len;
		msg.msg_flags = 0;

		lock_sock(sk);
		skb = np->pktoptions;
		if (skb)
			atomic_inc(&skb->users);
		release_sock(sk);

		if (skb) {
			int err = datagram_recv_ctl(sk, &msg, skb);
			kfree_skb(skb);
			if (err)
				return err;
		} else {
			if (np->rxopt.bits.rxinfo) {
				struct in6_pktinfo src_info;
				src_info.ipi6_ifindex = np->mcast_oif;
				ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
				put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
			}
			if (np->rxopt.bits.rxhlim) {
				int hlim = np->mcast_hops;
				put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
			}
		}
		len -= msg.msg_controllen;
		return put_user(len, optlen);
	}
	case IPV6_MTU:
	{
		struct dst_entry *dst;
		val = 0;	
		lock_sock(sk);
		dst = sk_dst_get(sk);
		if (dst) {
			val = dst_mtu(dst);
			dst_release(dst);
		}
		release_sock(sk);
		if (!val)
			return -ENOTCONN;
		break;
	}

	case IPV6_V6ONLY:
		val = np->ipv6only;
		break;

	case IPV6_PKTINFO:
		val = np->rxopt.bits.rxinfo;
		break;

	case IPV6_HOPLIMIT:
		val = np->rxopt.bits.rxhlim;
		break;

	case IPV6_RTHDR:
		val = np->rxopt.bits.srcrt;
		break;

	case IPV6_HOPOPTS:
		val = np->rxopt.bits.hopopts;
		break;

	case IPV6_DSTOPTS:
		val = np->rxopt.bits.dstopts;
		break;

	case IPV6_FLOWINFO:
		val = np->rxopt.bits.rxflow;
		break;

	case IPV6_UNICAST_HOPS:
		val = np->hop_limit;
		break;

	case IPV6_MULTICAST_HOPS:
		val = np->mcast_hops;
		break;

	case IPV6_MULTICAST_LOOP:
		val = np->mc_loop;
		break;

	case IPV6_MULTICAST_IF:
		val = np->mcast_oif;
		break;

	case IPV6_MTU_DISCOVER:
		val = np->pmtudisc;
		break;

	case IPV6_RECVERR:
		val = np->recverr;
		break;

	case IPV6_FLOWINFO_SEND:
		val = np->sndflow;
		break;

	default:
#ifdef CONFIG_NETFILTER
		lock_sock(sk);
		val = nf_getsockopt(sk, PF_INET6, optname, optval, 
				    &len);
		release_sock(sk);
		if (val >= 0)
			val = put_user(len, optlen);
		return val;
#else
		return -EINVAL;
#endif
	}
	len = min_t(unsigned int, sizeof(int), len);
	if(put_user(len, optlen))
		return -EFAULT;
	if(copy_to_user(optval,&val,len))
		return -EFAULT;
	return 0;
}
Example #5
0
int ipv6_getsockopt(struct sock *sk, int level, int optname, char *optval, 
		    int *optlen)
{
	struct ipv6_pinfo *np = &sk->net_pinfo.af_inet6;
	int len;
	int val;

	if(level==SOL_IP && sk->type != SOCK_RAW)
		return udp_prot.getsockopt(sk, level, optname, optval, optlen);
	if(level!=SOL_IPV6)
		return -ENOPROTOOPT;
	if (get_user(len, optlen))
		return -EFAULT;
	if (optlen < 0)
		return -EINVAL;
	switch (optname) {
	case IPV6_PKTOPTIONS:
	{
		struct msghdr msg;
		struct sk_buff *skb;

		if (sk->type != SOCK_STREAM)
			return -ENOPROTOOPT;

		msg.msg_control = optval;
		msg.msg_controllen = len;
		msg.msg_flags = 0;

		lock_sock(sk);
		skb = np->pktoptions;
		if (skb)
			atomic_inc(&skb->users);
		release_sock(sk);

		if (skb) {
			int err = datagram_recv_ctl(sk, &msg, skb);
			kfree_skb(skb);
			if (err)
				return err;
		} else {
			if (np->rxopt.bits.rxinfo) {
				struct in6_pktinfo src_info;
				src_info.ipi6_ifindex = np->mcast_oif;
				ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
				put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
			}
			if (np->rxopt.bits.rxhlim) {
				int hlim = np->mcast_hops;
				put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
			}
		}
		len -= msg.msg_controllen;
		return put_user(len, optlen);
	}

	case IPV6_MTU:
	{
		struct dst_entry *dst;
		val = 0;	
		lock_sock(sk);
		dst = sk_dst_get(sk);
		if (dst) {
			val = dst->pmtu;
			dst_release(dst);
		}
		release_sock(sk);
		if (!val)
			return -ENOTCONN;
		break;
	}

	case IPV6_PKTINFO:
		val = np->rxopt.bits.rxinfo;
		break;

	case IPV6_HOPLIMIT:
		val = np->rxopt.bits.rxhlim;
		break;

	case IPV6_RTHDR:
		val = np->rxopt.bits.srcrt;
		break;

	case IPV6_HOPOPTS:
		val = np->rxopt.bits.hopopts;
		break;

	case IPV6_AUTHHDR:
		val = np->rxopt.bits.authhdr;
		break;

	case IPV6_DSTOPTS:
		val = np->rxopt.bits.dstopts;
		break;

	case IPV6_FLOWINFO:
		val = np->rxopt.bits.rxflow;
		break;

	case IPV6_UNICAST_HOPS:
		val = np->hop_limit;
		break;

	case IPV6_MULTICAST_HOPS:
		val = np->mcast_hops;
		break;

	case IPV6_MULTICAST_LOOP:
		val = np->mc_loop;
		break;

	case IPV6_MULTICAST_IF:
		val = np->mcast_oif;
		break;

	case IPV6_MTU_DISCOVER:
		val = np->pmtudisc;
		break;

	case IPV6_RECVERR:
		val = np->recverr;
		break;

	case IPV6_FLOWINFO_SEND:
		val = np->sndflow;
		break;

	case IPV6_JOIN_GROUP:
	case IPV6_LEAVE_GROUP:
		return -EOPNOTSUPP;

	case IPV6_V6ONLY:
		val = np->ipv6only;
		break;

	case IPV6_RECVTCLASS:
                val = np->recvopt.tclass;
                break;

	case IPV6_TCLASS:
		val = np->tclass;
                break;

	default:
#ifdef CONFIG_NETFILTER
		lock_sock(sk);
		val = nf_getsockopt(sk, PF_INET6, optname, optval, 
				    &len);
		release_sock(sk);
		if (val >= 0)
			val = put_user(len, optlen);
		return val;
#else
		return -EINVAL;
#endif
	}
	len = min_t(unsigned int, sizeof(int), len);
	if(put_user(len, optlen))
		return -EFAULT;
	if(copy_to_user(optval,&val,len))
		return -EFAULT;
	return 0;
}