1 files changed, 93 insertions, 0 deletions
diff --git a/usr.sbin/nsd/ipc.h b/usr.sbin/nsd/ipc.h
new file mode 100644
index 00000000000..0f057388b2b
--- /dev/null
+++ b/usr.sbin/nsd/ipc.h
@@ -0,0 +1,93 @@
+/*
+ * ipc.h - Interprocess communication routines. Handlers read and write.
+ *
+ * Copyright (c) 2001-2006, NLnet Labs. All rights reserved.
+ *
+ * See LICENSE for the license.
+ *
+ */
+
+#ifndef NSD_IPC_H
+#define NSD_IPC_H
+
+#include <config.h>
+#include "netio.h"
+struct buffer;
+struct nsd;
+struct nsd_child;
+struct xfrd_tcp;
+
+/*
+ * Data for the server_main IPC handler 
+ * Used by parent side to listen to children, and write to children.
+ */
+struct main_ipc_handler_data
+{
+	struct nsd	*nsd;
+	struct nsd_child *child;
+	int		child_num;
+
+	/* pointer to the socket, as it may change if it is restarted */
+	int		*xfrd_sock;
+	struct buffer	*packet;
+	int		forward_mode;
+	size_t		got_bytes;
+	uint16_t	total_bytes;
+	uint32_t	acl_num;
+	
+	/* writing data, connection and state */
+	uint8_t		busy_writing_zone_state;
+	struct xfrd_tcp	*write_conn;
+};
+
+/*
+ * Data for ipc handler, nsd and a conn for reading ipc msgs.
+ * Used by children to listen to parent. 
+ * Used by parent to listen to xfrd.
+ */
+struct ipc_handler_conn_data
+{
+	struct nsd	*nsd;
+	struct xfrd_tcp	*conn;
+};
+
+/*
+ * Routine used by server_main.
+ * Handle a command received from the xfrdaemon processes.
+ */
+void parent_handle_xfrd_command(netio_type *netio,
+	netio_handler_type *handler, netio_event_types_type event_types);
+
+/*
+ * Routine used by server_main.
+ * Handle a command received from the reload process.
+ */
+void parent_handle_reload_command(netio_type *netio,
+	netio_handler_type *handler, netio_event_types_type event_types);
+
+/*
+ * Routine used by server_main.
+ * Handle a command received from the children processes.
+ * Send commands and forwarded xfrd packets when writable.
+ */
+void parent_handle_child_command(netio_type *netio,
+	netio_handler_type *handler, netio_event_types_type event_types);
+
+/*
+ * Routine used by server_child.
+ * Handle a command received from the parent process.
+ */
+void child_handle_parent_command(netio_type *netio,
+	netio_handler_type *handler, netio_event_types_type event_types);
+
+/*
+ * Routine used by xfrd
+ * Handle interprocess communication with parent process, read and write.
+ */
+void xfrd_handle_ipc(netio_type *netio,
+	netio_handler_type *handler, netio_event_types_type event_types);
+
+/* check if all children have exited in an orderly fashion and set mode */
+void parent_check_all_children_exited(struct nsd* nsd);
+
+#endif /* NSD_IPC_H */