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Subject[PATCH RFC 03/48] Audit: implement audit self-defined compare function
Date
After this patch, audit netlink sockets can
communicate with each other when they belong
to the same user namespace.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
---
kernel/audit.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/kernel/audit.c b/kernel/audit.c
index 766dcbf..3ae8793 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -937,6 +937,11 @@ static void audit_receive(struct sk_buff *skb)
mutex_unlock(&audit_cmd_mutex);
}

+static bool audit_compare(struct net *net, struct sock *sk)
+{
+ return (sock_net(sk)->user_ns == net->user_ns);
+}
+
static int __net_init audit_net_init(struct net *net)
{
struct user_namespace *ns = net->user_ns;
@@ -949,6 +954,7 @@ static int __net_init audit_net_init(struct net *net)
*/
struct netlink_kernel_cfg cfg = {
.input = audit_receive,
+ .compare = audit_compare,
};

sk = netlink_kernel_create(net, NETLINK_AUDIT, &cfg);
--
1.8.1.4


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