* Set the IP multicast options in response to user setsockopt(). * * Many of the socket options handled in this function duplicate the * functionality of socket options in the regular unicast API. However, * it is not possible to merge the duplicate code, because the idempotence * of the IPv6 multicast part of the BSD Sockets API must be preserved; * the effects of these options must be trea
| 2623 | * SMPng: XXX: Unlocked read of inp_socket believed OK. |
| 2624 | */ |
| 2625 | int |
| 2626 | ip6_setmoptions(struct inpcb *inp, struct sockopt *sopt) |
| 2627 | { |
| 2628 | struct ip6_moptions *im6o; |
| 2629 | int error; |
| 2630 | |
| 2631 | error = 0; |
| 2632 | |
| 2633 | /* |
| 2634 | * If socket is neither of type SOCK_RAW or SOCK_DGRAM, |
| 2635 | * or is a divert socket, reject it. |
| 2636 | */ |
| 2637 | if (inp->inp_socket->so_proto->pr_protocol == IPPROTO_DIVERT || |
| 2638 | (inp->inp_socket->so_proto->pr_type != SOCK_RAW && |
| 2639 | inp->inp_socket->so_proto->pr_type != SOCK_DGRAM)) |
| 2640 | return (EOPNOTSUPP); |
| 2641 | |
| 2642 | switch (sopt->sopt_name) { |
| 2643 | case IPV6_MULTICAST_IF: |
| 2644 | error = in6p_set_multicast_if(inp, sopt); |
| 2645 | break; |
| 2646 | |
| 2647 | case IPV6_MULTICAST_HOPS: { |
| 2648 | int hlim; |
| 2649 | |
| 2650 | if (sopt->sopt_valsize != sizeof(int)) { |
| 2651 | error = EINVAL; |
| 2652 | break; |
| 2653 | } |
| 2654 | error = sooptcopyin(sopt, &hlim, sizeof(hlim), sizeof(int)); |
| 2655 | if (error) |
| 2656 | break; |
| 2657 | if (hlim < -1 || hlim > 255) { |
| 2658 | error = EINVAL; |
| 2659 | break; |
| 2660 | } else if (hlim == -1) { |
| 2661 | hlim = V_ip6_defmcasthlim; |
| 2662 | } |
| 2663 | im6o = in6p_findmoptions(inp); |
| 2664 | im6o->im6o_multicast_hlim = hlim; |
| 2665 | INP_WUNLOCK(inp); |
| 2666 | break; |
| 2667 | } |
| 2668 | |
| 2669 | case IPV6_MULTICAST_LOOP: { |
| 2670 | u_int loop; |
| 2671 | |
| 2672 | /* |
| 2673 | * Set the loopback flag for outgoing multicast packets. |
| 2674 | * Must be zero or one. |
| 2675 | */ |
| 2676 | if (sopt->sopt_valsize != sizeof(u_int)) { |
| 2677 | error = EINVAL; |
| 2678 | break; |
| 2679 | } |
| 2680 | error = sooptcopyin(sopt, &loop, sizeof(u_int), sizeof(u_int)); |
| 2681 | if (error) |
| 2682 | break; |
no test coverage detected