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diff --git a/src/util/verto/verto-module.h b/src/util/verto/verto-module.h
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+++ b/src/util/verto/verto-module.h
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+/*
+ * Copyright 2011 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/*** THE FOLLOWING ARE FOR IMPLEMENTATION MODULES ONLY ***/
+
+#ifndef VERTO_MODULE_H_
+#define VERTO_MODULE_H_
+
+#include <verto.h>
+
+#define VERTO_MODULE_VERSION 1
+#define VERTO_MODULE_TABLE verto_module_table
+#define VERTO_MODULE(name, symb, types) \
+    static verto_ctx_funcs name ## _funcs = { \
+        name ## _ctx_free, \
+        name ## _ctx_run, \
+        name ## _ctx_run_once, \
+        name ## _ctx_break, \
+        name ## _ctx_add, \
+        name ## _ctx_del \
+    }; \
+    verto_module VERTO_MODULE_TABLE = { \
+        VERTO_MODULE_VERSION, \
+        # name, \
+        # symb, \
+        types, \
+        verto_new_ ## name, \
+        verto_default_ ## name, \
+    };
+
+typedef verto_ctx *(*verto_ctx_constructor)();
+
+typedef struct {
+    unsigned int vers;
+    const char *name;
+    const char *symb;
+    verto_ev_type types;
+    verto_ctx_constructor new_ctx;
+    verto_ctx_constructor def_ctx;
+} verto_module;
+
+typedef struct {
+    void  (*ctx_free)(void *ctx);
+    void  (*ctx_run)(void *ctx);
+    void  (*ctx_run_once)(void *ctx);
+    void  (*ctx_break)(void *ctx);
+    void *(*ctx_add)(void *ctx, const verto_ev *ev, verto_ev_flag *flags);
+    void  (*ctx_del)(void *ctx, const verto_ev *ev, void *evpriv);
+} verto_ctx_funcs;
+
+/**
+ * Converts an existing implementation specific loop to a verto_ctx.
+ *
+ * This function also sets the internal default implementation so that future
+ * calls to verto_new(NULL) or verto_default(NULL) will use this specific
+ * implementation.
+ *
+ * @param name The name of the module (unquoted)
+ * @param priv The context private to store
+ * @return A new _ev_ctx, or NULL on error. Call verto_free() when done.
+ */
+#define verto_convert(name, priv) \
+        verto_convert_funcs(&name ## _funcs, &VERTO_MODULE_TABLE, priv)
+
+/**
+ * Converts an existing implementation specific loop to a verto_ctx.
+ *
+ * This function also sets the internal default implementation so that future
+ * calls to verto_new(NULL) or verto_default(NULL) will use this specific
+ * implementation.
+ *
+ * If you are a module implementation, you probably want the macro above.  This
+ * function is generally used directly only when an application is attempting
+ * to expose a home-grown event loop to verto.
+ *
+ * @param name The name of the module (unquoted)
+ * @param priv The context private to store
+ * @return A new _ev_ctx, or NULL on error. Call verto_free() when done.
+ */
+verto_ctx *
+verto_convert_funcs(const verto_ctx_funcs *funcs,
+                    const verto_module *module,
+                    void *priv);
+
+/**
+ * Calls the callback of the verto_ev and then frees it via verto_del().
+ *
+ * The verto_ev is not freed (verto_del() is not called) if it is a signal event.
+ *
+ * @see verto_add_read()
+ * @see verto_add_write()
+ * @see verto_add_timeout()
+ * @see verto_add_idle()
+ * @see verto_add_signal()
+ * @see verto_add_child()
+ * @see verto_del()
+ * @param ev The verto_ev
+ */
+void
+verto_fire(verto_ev *ev);
+
+/**
+ * Sets the status of the pid/handle which caused this event to fire.
+ *
+ * This function does nothing if the verto_ev is not a child type.
+ *
+ * @see verto_add_child()
+ * @param ev The verto_ev to set the status in.
+ * @param status The pid/handle status.
+ */
+void
+verto_set_proc_status(verto_ev *ev, verto_proc_status status);
+
+#endif /* VERTO_MODULE_H_ */