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net: add skb_to_full_sk() helper and use it in selinux_netlbl_skbuff_setsid()

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Generalize selinux_skb_sk() added in commit 212cd08953
("selinux: fix random read in selinux_ip_postroute_compat()")
so that we can use it other contexts.

Use it right away in selinux_netlbl_skbuff_setsid()

Fixes: ca6fb06518 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2015-11-08 10:54:07 -08:00
committed by David S. Miller
parent fb9a10d9d8
commit 54abc686c2
3 changed files with 15 additions and 15 deletions
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2
security/selinux/netlabel.c
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@@ -245,7 +245,7 @@ int selinux_netlbl_skbuff_setsid(struct sk_buff *skb,
/* if this is a locally generated packet check to see if it is already
* being labeled by it's parent socket, if it is just exit */
sk = skb->sk;
sk = skb_to_full_sk(skb);
if (sk != NULL) {
struct sk_security_struct *sksec = sk->sk_security;
if (sksec->nlbl_state != NLBL_REQSKB)