1 files changed, 144 insertions, 0 deletions
diff --git a/netlink/handlers.h b/netlink/handlers.h
new file mode 100644
index 0000000..f373f58
--- /dev/null
+++ b/netlink/handlers.h
@@ -0,0 +1,144 @@
+/*
+ * netlink/handlers.c	default netlink message handlers
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_HANDLERS_H_
+#define NETLINK_HANDLERS_H_
+
+#include <stdio.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <netlink/netlink-compat.h>
+#include <netlink/netlink-kernel.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_cb;
+struct nl_sock;
+struct nl_msg;
+struct ucred;
+
+/**
+ * @name Callback Typedefs
+ * @{
+ */
+
+/**
+ * nl_recvmsgs() callback for message processing customization
+ * @ingroup cb
+ * @arg msg		netlink message being processed
+ * @arg arg		argument passwd on through caller
+ */
+typedef int (*nl_recvmsg_msg_cb_t)(struct nl_msg *msg, void *arg);
+
+/**
+ * nl_recvmsgs() callback for error message processing customization
+ * @ingroup cb
+ * @arg nla		netlink address of the peer
+ * @arg nlerr		netlink error message being processed
+ * @arg arg		argument passed on through caller
+ */
+typedef int (*nl_recvmsg_err_cb_t)(struct sockaddr_nl *nla,
+				   struct nlmsgerr *nlerr, void *arg);
+
+/** @} */
+
+/**
+ * Callback actions
+ * @ingroup cb
+ */
+enum nl_cb_action {
+	/** Proceed with wathever would come next */
+	NL_OK,
+	/** Skip this message */
+	NL_SKIP,
+	/** Stop parsing altogether and discard remaining messages */
+	NL_STOP,
+};
+
+/**
+ * Callback kinds
+ * @ingroup cb
+ */
+enum nl_cb_kind {
+	/** Default handlers (quiet) */
+	NL_CB_DEFAULT,
+	/** Verbose default handlers (error messages printed) */
+	NL_CB_VERBOSE,
+	/** Debug handlers for debugging */
+	NL_CB_DEBUG,
+	/** Customized handler specified by the user */
+	NL_CB_CUSTOM,
+	__NL_CB_KIND_MAX,
+};
+
+#define NL_CB_KIND_MAX (__NL_CB_KIND_MAX - 1)
+
+/**
+ * Callback types
+ * @ingroup cb
+ */
+enum nl_cb_type {
+	/** Message is valid */
+	NL_CB_VALID,
+	/** Last message in a series of multi part messages received */
+	NL_CB_FINISH,
+	/** Report received that data was lost */
+	NL_CB_OVERRUN,
+	/** Message wants to be skipped */
+	NL_CB_SKIPPED,
+	/** Message is an acknowledge */
+	NL_CB_ACK,
+	/** Called for every message received */
+	NL_CB_MSG_IN,
+	/** Called for every message sent out except for nl_sendto() */
+	NL_CB_MSG_OUT,
+	/** Message is malformed and invalid */
+	NL_CB_INVALID,
+	/** Called instead of internal sequence number checking */
+	NL_CB_SEQ_CHECK,
+	/** Sending of an acknowledge message has been requested */
+	NL_CB_SEND_ACK,
+	__NL_CB_TYPE_MAX,
+};
+
+#define NL_CB_TYPE_MAX (__NL_CB_TYPE_MAX - 1)
+
+extern struct nl_cb *	nl_cb_alloc(enum nl_cb_kind);
+extern struct nl_cb *	nl_cb_clone(struct nl_cb *);
+extern struct nl_cb *	nl_cb_get(struct nl_cb *);
+extern void		nl_cb_put(struct nl_cb *);
+
+extern int  nl_cb_set(struct nl_cb *, enum nl_cb_type, enum nl_cb_kind,
+		      nl_recvmsg_msg_cb_t, void *);
+extern int  nl_cb_set_all(struct nl_cb *, enum nl_cb_kind,
+			  nl_recvmsg_msg_cb_t, void *);
+extern int  nl_cb_err(struct nl_cb *, enum nl_cb_kind, nl_recvmsg_err_cb_t,
+		      void *);
+
+extern void nl_cb_overwrite_recvmsgs(struct nl_cb *,
+				     int (*func)(struct nl_sock *,
+						 struct nl_cb *));
+extern void nl_cb_overwrite_recv(struct nl_cb *,
+				 int (*func)(struct nl_sock *,
+					     struct sockaddr_nl *,
+					     unsigned char **,
+					     struct ucred **));
+extern void nl_cb_overwrite_send(struct nl_cb *,
+				 int (*func)(struct nl_sock *,
+					     struct nl_msg *));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif