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ipv6: Fail with appropriate error code when setting not-applicable sockopt. 

IPV6_MULTICAST_HOPS, for example, is not valid for stream sockets.
Since they are virtually unavailable for stream sockets,
we should return ENOPROTOOPT instead of EINVAL.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
YOSHIFUJI Hideaki 2008-06-12 03:27:26 +09:00
parent 28d4488216
commit 1717699cd5
1 changed files with 4 additions and 4 deletions
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8
net/ipv6/ipv6_sockglue.c
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@ -67,7 +67,7 @@ int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
/* RA packet may be delivered ONLY to IPPROTO_RAW socket */
if (sk->sk_type != SOCK_RAW || inet_sk(sk)->num != IPPROTO_RAW)
return -EINVAL;
return -ENOPROTOOPT;
new_ra = (sel>=0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
@ -446,7 +446,7 @@ done:
case IPV6_MULTICAST_HOPS:
if (sk->sk_type == SOCK_STREAM)
goto e_inval;
break;
if (optlen < sizeof(int))
goto e_inval;
if (val > 255 || val < -1)
@ -466,7 +466,7 @@ done:
case IPV6_MULTICAST_IF:
if (sk->sk_type == SOCK_STREAM)
goto e_inval;
break;
if (optlen < sizeof(int))
goto e_inval;
@ -862,7 +862,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
if (sk->sk_protocol != IPPROTO_UDP &&
sk->sk_protocol != IPPROTO_UDPLITE &&
sk->sk_protocol != IPPROTO_TCP)
return -EINVAL;
return -ENOPROTOOPT;
if (sk->sk_state != TCP_ESTABLISHED)
return -ENOTCONN;
val = sk->sk_family;