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[IPV6]: Fix the return value of ipv6_getsockopt 

If CONFIG_NETFILTER if not selected when compile the kernel source code, 
ipv6_getsockopt will returen an EINVAL error if optname is not supported by
the kernel. But if CONFIG_NETFILTER is selected, ENOPROTOOPT error will 
be return.

This patch fix to always return ENOPROTOOPT error if optname argument of 
ipv6_getsockopt is not supported by the kernel.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun 2007-12-16 13:39:57 -08:00 committed by David S. Miller
parent 3ae412544c
commit cf6fc4a924
1 changed files with 5 additions and 7 deletions
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12
net/ipv6/ipv6_sockglue.c
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@ -1046,7 +1046,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
break;
default:
return -EINVAL;
return -ENOPROTOOPT;
}
len = min_t(unsigned int, sizeof(int), len);
if(put_user(len, optlen))
@ -1069,9 +1069,8 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
#ifdef CONFIG_NETFILTER
/* we need to exclude all possible EINVALs except default case */
if (err == -EINVAL && optname != IPV6_ADDRFORM &&
optname != MCAST_MSFILTER) {
/* we need to exclude all possible ENOPROTOOPTs except default case */
if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
int len;
if (get_user(len, optlen))
@ -1108,9 +1107,8 @@ int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
#ifdef CONFIG_NETFILTER
/* we need to exclude all possible EINVALs except default case */
if (err == -EINVAL && optname != IPV6_ADDRFORM &&
optname != MCAST_MSFILTER) {
/* we need to exclude all possible ENOPROTOOPTs except default case */
if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
int len;
if (get_user(len, optlen))