Add audit uid to netlink credentials

Most audit control messages are sent over netlink.In order to properly
log the identity of the sender of audit control messages, we would like
to add the loginuid to the netlink_creds structure, as per the attached
patch.

Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 29a5fd231eac..cb64cff3e339 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -905,6 +905,7 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
         NETLINK_CB(skb).groups  = nlk->groups;
         NETLINK_CB(skb).dst_pid = dst_pid;
         NETLINK_CB(skb).dst_groups = dst_groups;
+        NETLINK_CB(skb).loginuid = audit_get_loginuid(current->audit_context);
         memcpy(NETLINK_CREDS(skb), &siocb->scm->creds, sizeof(struct ucred));
 
         /* What can I do? Netlink is asynchronous, so that