Index: kernel/generic/include/ipc/sysipc_ops.h
===================================================================
--- kernel/generic/include/ipc/sysipc_ops.h	(revision 642dc728c9436be2cabdfe5b34b0db1e33fefcfe)
+++ kernel/generic/include/ipc/sysipc_ops.h	(revision 642dc728c9436be2cabdfe5b34b0db1e33fefcfe)
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2012 Jakub Jermar 
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup genericipc
+ * @{
+ */
+/** @file
+ */
+
+#ifndef KERN_SYSIPC_OPS_H_
+#define KERN_SYSIPC_OPS_H_
+
+#include <ipc/ipc.h>
+
+typedef struct {
+	int (* request_preprocess)(call_t *, phone_t *);
+	int (* request_process)(call_t *, answerbox_t *);
+	int (* answer_preprocess)(call_t *, ipc_data_t *);
+	int (* answer_process)(call_t *);
+} sysipc_ops_t;
+
+extern sysipc_ops_t *sysipc_ops_get(sysarg_t);
+
+extern int null_request_preprocess(call_t *, phone_t *);
+extern int null_request_process(call_t *, answerbox_t *);
+extern int null_answer_preprocess(call_t *, ipc_data_t *);
+extern int null_answer_process(call_t *);
+
+#endif
+
+/** @}
+ */