diff options
| author | Paul Moore <paul.moore@hp.com> | 2008-01-29 08:38:04 -0500 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-01-30 08:17:20 +1100 |
| commit | 75e22910cf0c26802b09dac2e34c13e648d3ed02 (patch) | |
| tree | bf5f5c62f6db8a3057a0265dc7748bf310d26d4a /security/selinux/hooks.c | |
| parent | 16efd45435fa695b501b7f73c3259bd7c77cc12c (diff) | |
NetLabel: Add IP address family information to the netlbl_skbuff_getattr() function
In order to do any sort of IP header inspection of incoming packets we need to
know which address family, AF_INET/AF_INET6/etc., it belongs to and since the
sk_buff structure does not store this information we need to pass along the
address family separate from the packet itself.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 64d414efb404..5df12072c8d5 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3429,6 +3429,7 @@ 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 + * @family: protocol family * @sid: the packet's SID * * Description: @@ -3441,13 +3442,16 @@ static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad, * selinux_netlbl_skbuff_getsid(). * */ -static void selinux_skb_extlbl_sid(struct sk_buff *skb, u32 *sid) +static void selinux_skb_extlbl_sid(struct sk_buff *skb, + u16 family, + u32 *sid) { u32 xfrm_sid; u32 nlbl_sid; selinux_skb_xfrm_sid(skb, &xfrm_sid); if (selinux_netlbl_skbuff_getsid(skb, + family, (xfrm_sid == SECSID_NULL ? SECINITSID_NETMSG : xfrm_sid), &nlbl_sid) != 0) @@ -3940,7 +3944,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) if (err) goto out; - err = selinux_netlbl_sock_rcv_skb(sksec, skb, &ad); + err = selinux_netlbl_sock_rcv_skb(sksec, skb, family, &ad); if (err) goto out; @@ -3996,18 +4000,25 @@ out: static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) { u32 peer_secid = SECSID_NULL; - int err = 0; + u16 family; - if (sock && sock->sk->sk_family == PF_UNIX) + if (sock) + family = sock->sk->sk_family; + else if (skb && skb->sk) + family = skb->sk->sk_family; + else + goto out; + + if (sock && family == PF_UNIX) selinux_get_inode_sid(SOCK_INODE(sock), &peer_secid); else if (skb) - selinux_skb_extlbl_sid(skb, &peer_secid); + selinux_skb_extlbl_sid(skb, family, &peer_secid); - if (peer_secid == SECSID_NULL) - err = -EINVAL; +out: *secid = peer_secid; - - return err; + if (peer_secid == SECSID_NULL) + return -EINVAL; + return 0; } static int selinux_sk_alloc_security(struct sock *sk, int family, gfp_t priority) @@ -4062,7 +4073,7 @@ static int selinux_inet_conn_request(struct sock *sk, struct sk_buff *skb, u32 newsid; u32 peersid; - selinux_skb_extlbl_sid(skb, &peersid); + selinux_skb_extlbl_sid(skb, sk->sk_family, &peersid); if (peersid == SECSID_NULL) { req->secid = sksec->sid; req->peer_secid = SECSID_NULL; @@ -4100,7 +4111,7 @@ static void selinux_inet_conn_established(struct sock *sk, { struct sk_security_struct *sksec = sk->sk_security; - selinux_skb_extlbl_sid(skb, &sksec->peer_sid); + selinux_skb_extlbl_sid(skb, sk->sk_family, &sksec->peer_sid); } static void selinux_req_classify_flow(const struct request_sock *req, |