1 files changed, 158 insertions, 0 deletions
diff --git a/net/netlabel/netlabel_user.c b/net/netlabel/netlabel_user.c
new file mode 100644
index 000000000000..73cbe66e42ff
--- /dev/null
+++ b/net/netlabel/netlabel_user.c
@@ -0,0 +1,158 @@
+/*
+ * NetLabel NETLINK Interface
+ *
+ * This file defines the NETLINK interface for the NetLabel system.  The
+ * NetLabel system manages static and dynamic label mappings for network
+ * protocols such as CIPSO and RIPSO.
+ *
+ * Author: Paul Moore <paul.moore@hp.com>
+ *
+ */
+
+/*
+ * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
+ *
+ * This program is free software;  you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program;  if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/socket.h>
+#include <net/sock.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
+#include <net/netlabel.h>
+#include <asm/bug.h>
+
+#include "netlabel_mgmt.h"
+#include "netlabel_unlabeled.h"
+#include "netlabel_cipso_v4.h"
+#include "netlabel_user.h"
+
+/*
+ * NetLabel NETLINK Setup Functions
+ */
+
+/**
+ * netlbl_netlink_init - Initialize the NETLINK communication channel
+ *
+ * Description:
+ * Call out to the NetLabel components so they can register their families and
+ * commands with the Generic NETLINK mechanism.  Returns zero on success and
+ * non-zero on failure.
+ *
+ */
+int netlbl_netlink_init(void)
+{
+	int ret_val;
+
+	ret_val = netlbl_mgmt_genl_init();
+	if (ret_val != 0)
+		return ret_val;
+
+	ret_val = netlbl_cipsov4_genl_init();
+	if (ret_val != 0)
+		return ret_val;
+
+	ret_val = netlbl_unlabel_genl_init();
+	if (ret_val != 0)
+		return ret_val;
+
+	return 0;
+}
+
+/*
+ * NetLabel Common Protocol Functions
+ */
+
+/**
+ * netlbl_netlink_send_ack - Send an ACK message
+ * @info: the generic NETLINK information
+ * @genl_family: the generic NETLINK family ID value
+ * @ack_cmd: the generic NETLINK family ACK command value
+ * @ret_code: return code to use
+ *
+ * Description:
+ * This function sends an ACK message to the sender of the NETLINK message
+ * specified by @info.
+ *
+ */
+void netlbl_netlink_send_ack(const struct genl_info *info,
+			     u32 genl_family,
+			     u8 ack_cmd,
+			     u32 ret_code)
+{
+	size_t data_size;
+	struct sk_buff *skb;
+
+	data_size = GENL_HDRLEN + 2 * NETLBL_LEN_U32;
+	skb = netlbl_netlink_alloc_skb(0, data_size, GFP_KERNEL);
+	if (skb == NULL)
+		return;
+
+	if (netlbl_netlink_hdr_put(skb,
+				   info->snd_pid,
+				   0,
+				   genl_family,
+				   ack_cmd) == NULL)
+		goto send_ack_failure;
+
+	if (nla_put_u32(skb, NLA_U32, info->snd_seq) != 0)
+		goto send_ack_failure;
+	if (nla_put_u32(skb, NLA_U32, ret_code) != 0)
+		goto send_ack_failure;
+
+	netlbl_netlink_snd(skb, info->snd_pid);
+	return;
+
+send_ack_failure:
+	kfree_skb(skb);
+}
+
+/*
+ * NETLINK I/O Functions
+ */
+
+/**
+ * netlbl_netlink_snd - Send a NetLabel message
+ * @skb: NetLabel message
+ * @pid: destination PID
+ *
+ * Description:
+ * Sends a unicast NetLabel message over the NETLINK socket.
+ *
+ */
+int netlbl_netlink_snd(struct sk_buff *skb, u32 pid)
+{
+	return genlmsg_unicast(skb, pid);
+}
+
+/**
+ * netlbl_netlink_snd - Send a NetLabel message
+ * @skb: NetLabel message
+ * @pid: sending PID
+ * @group: multicast group id
+ *
+ * Description:
+ * Sends a multicast NetLabel message over the NETLINK socket to all members
+ * of @group except @pid.
+ *
+ */
+int netlbl_netlink_snd_multicast(struct sk_buff *skb, u32 pid, u32 group)
+{
+	return genlmsg_multicast(skb, pid, group, GFP_KERNEL);
+}