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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2011-02-23 12:55:21 +0100 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2011-02-25 15:00:47 -0500 |
| commit | b9679a76187694138099e09d7f5091b73086e6d7 (patch) | |
| tree | 224bfa579013b55ed6c459879ba0aab6d28e8ae2 /security | |
| parent | 8f82a6880d8d03961181d973388e1df2772a8b24 (diff) | |
| download | lwn-b9679a76187694138099e09d7f5091b73086e6d7.tar.gz lwn-b9679a76187694138099e09d7f5091b73086e6d7.zip | |
selinux: Fix wrong checks for selinux_policycap_netpeer
selinux_sock_rcv_skb_compat and selinux_ip_postroute_compat are just
called if selinux_policycap_netpeer is not set. However in these
functions we check if selinux_policycap_netpeer is set. This leads
to some dead code and to the fact that selinux_xfrm_postroute_last
is never executed. This patch removes the dead code and the checks
for selinux_policycap_netpeer in the compatibility functions.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/selinux/hooks.c | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index c8b359fc2949..b4e1ca021fc4 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3915,7 +3915,6 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb, { int err = 0; struct sk_security_struct *sksec = sk->sk_security; - u32 peer_sid; u32 sk_sid = sksec->sid; struct common_audit_data ad; char *addrp; @@ -3934,20 +3933,10 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb, return err; } - if (selinux_policycap_netpeer) { - err = selinux_skb_peerlbl_sid(skb, family, &peer_sid); - if (err) - return err; - err = avc_has_perm(sk_sid, peer_sid, - SECCLASS_PEER, PEER__RECV, &ad); - if (err) - selinux_netlbl_err(skb, err, 0); - } else { - err = selinux_netlbl_sock_rcv_skb(sksec, skb, family, &ad); - if (err) - return err; - err = selinux_xfrm_sock_rcv_skb(sksec->sid, skb, &ad); - } + err = selinux_netlbl_sock_rcv_skb(sksec, skb, family, &ad); + if (err) + return err; + err = selinux_xfrm_sock_rcv_skb(sksec->sid, skb, &ad); return err; } @@ -4442,9 +4431,8 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb, SECCLASS_PACKET, PACKET__SEND, &ad)) return NF_DROP_ERR(-ECONNREFUSED); - if (selinux_policycap_netpeer) - if (selinux_xfrm_postroute_last(sksec->sid, skb, &ad, proto)) - return NF_DROP_ERR(-ECONNREFUSED); + if (selinux_xfrm_postroute_last(sksec->sid, skb, &ad, proto)) + return NF_DROP_ERR(-ECONNREFUSED); return NF_ACCEPT; } |