Commit 28d44882 authored Jun 12, 2008 by YOSHIFUJI Hideaki

ipv6: Check IPV6_MULTICAST_LOOP option value.



Only 0 and 1 are valid for IPV6_MULTICAST_LOOP socket option,
and we should return an error of EINVAL otherwise, per RFC3493.

Based on patch from Shan Wei <shanwei@cn.fujitsu.com>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

parent e8766fc8

net/ipv6/ipv6_sockglue.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -458,6 +458,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
		case IPV6_MULTICAST_LOOP:
		if (optlen < sizeof(int))
		goto e_inval;
		if (val != valbool)
		goto e_inval;
		np->mc_loop = valbool;
		retv = 0;
		break;