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ipv6: Check IPV6_MULTICAST_LOOP option value.
author
YOSHIFUJI Hideaki
<yoshfuji@linux-ipv6.org>
Wed, 11 Jun 2008 18:14:51 +0000
(
03:14
+0900)
committer
YOSHIFUJI Hideaki
<yoshfuji@linux-ipv6.org>
Thu, 12 Jun 2008 00:19:09 +0000
(09:19 +0900)
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>
net/ipv6/ipv6_sockglue.c
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diff --git
a/net/ipv6/ipv6_sockglue.c
b/net/ipv6/ipv6_sockglue.c
index
ce794d6
..
9a36971
100644
(file)
--- a/
net/ipv6/ipv6_sockglue.c
+++ b/
net/ipv6/ipv6_sockglue.c
@@
-458,6
+458,8
@@
done:
case IPV6_MULTICAST_LOOP:
if (optlen < sizeof(int))
goto e_inval;
+ if (val != valbool)
+ goto e_inval;
np->mc_loop = valbool;
retv = 0;
break;