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xfrm: Do not parse 32bits compiled xfrm netlink msg on 64bits host

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structure like xfrm_usersa_info or xfrm_userpolicy_info
has different sizeof when compiled as 32bits and 64bits
due to not appending pack attribute in their definition.
This will result in broken SA and SP information when user
trying to configure them through netlink interface.

Inform user land about this situation instead of keeping
silent, the upper test scripts would behave accordingly.

Signed-off-by: Fan Du <fan.du@intel.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Fan Du 2015-01-27 17:00:29 +08:00 committed by Steffen Klassert
parent b898441f4e
commit 74005991b7
1 changed files with 5 additions and 0 deletions
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5
net/xfrm/xfrm_user.c
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@ -2423,6 +2423,11 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
const struct xfrm_link *link;
int type, err;
#ifdef CONFIG_COMPAT
if (is_compat_task())
return -ENOTSUPP;
#endif
type = nlh->nlmsg_type;
if (type > XFRM_MSG_MAX)
return -EINVAL;