v4.19.13 snapshot.
diff --git a/arch/um/drivers/daemon.h b/arch/um/drivers/daemon.h
new file mode 100644
index 0000000..c2dd195
--- /dev/null
+++ b/arch/um/drivers/daemon.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __DAEMON_H__
+#define __DAEMON_H__
+
+#include <net_user.h>
+
+#define SWITCH_VERSION 3
+
+struct daemon_data {
+ char *sock_type;
+ char *ctl_sock;
+ void *ctl_addr;
+ void *data_addr;
+ void *local_addr;
+ int fd;
+ int control;
+ void *dev;
+};
+
+extern const struct net_user_info daemon_user_info;
+
+extern int daemon_user_write(int fd, void *buf, int len,
+ struct daemon_data *pri);
+
+#endif