SELinux: use SECINITSID_NETMSG instead of SECINITSID_UNLABELED for NetLabel

[pandora-kernel.git] / security / selinux / hooks.c

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 520b999..26356e6 100644 (file)
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3129,17 +3129,19 @@ static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad,
 /**
  * selinux_skb_extlbl_sid - Determine the external label of a packet
  * @skb: the packet
- * @base_sid: the SELinux SID to use as a context for MLS only external labels
  * @sid: the packet's SID
  *
  * Description:
  * Check the various different forms of external packet labeling and determine
- * the external SID for the packet.
+ * the external SID for the packet.  If only one form of external labeling is
+ * present then it is used, if both labeled IPsec and NetLabel labels are
+ * present then the SELinux type information is taken from the labeled IPsec
+ * SA and the MLS sensitivity label information is taken from the NetLabel
+ * security attributes.  This bit of "magic" is done in the call to
+ * selinux_netlbl_skbuff_getsid().
  *
  */
-static void selinux_skb_extlbl_sid(struct sk_buff *skb,
-                                  u32 base_sid,
-                                  u32 *sid)
+static void selinux_skb_extlbl_sid(struct sk_buff *skb, u32 *sid)
 {
        u32 xfrm_sid;
        u32 nlbl_sid;
@@ -3147,10 +3149,9 @@ static void selinux_skb_extlbl_sid(struct sk_buff *skb,
        selinux_skb_xfrm_sid(skb, &xfrm_sid);
        if (selinux_netlbl_skbuff_getsid(skb,
                                         (xfrm_sid == SECSID_NULL ?
-                                         base_sid : xfrm_sid),
+                                         SECINITSID_NETMSG : xfrm_sid),
                                         &nlbl_sid) != 0)
                nlbl_sid = SECSID_NULL;
-
        *sid = (nlbl_sid == SECSID_NULL ? xfrm_sid : nlbl_sid);
 }
 
@@ -3695,7 +3696,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
        if (sock && sock->sk->sk_family == PF_UNIX)
                selinux_get_inode_sid(SOCK_INODE(sock), &peer_secid);
        else if (skb)
-               selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peer_secid);
+               selinux_skb_extlbl_sid(skb, &peer_secid);
 
        if (peer_secid == SECSID_NULL)
                err = -EINVAL;
@@ -3756,7 +3757,7 @@ static int selinux_inet_conn_request(struct sock *sk, struct sk_buff *skb,
        u32 newsid;
        u32 peersid;
 
-       selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peersid);
+       selinux_skb_extlbl_sid(skb, &peersid);
        if (peersid == SECSID_NULL) {
                req->secid = sksec->sid;
                req->peer_secid = SECSID_NULL;
@@ -3794,7 +3795,7 @@ static void selinux_inet_conn_established(struct sock *sk,
 {
        struct sk_security_struct *sksec = sk->sk_security;
 
-       selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &sksec->peer_sid);
+       selinux_skb_extlbl_sid(skb, &sksec->peer_sid);
 }
 
 static void selinux_req_classify_flow(const struct request_sock *req,