From d7d9a1e104c21183506935f26d59bb00161bd797 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Thu, 9 Jul 2020 22:38:36 +0200
Subject: Add experimental RPC infrastructure

This is free for experimenting RPCs, with no backward compatibility guarantees.

* Makefrag.am (EXTRA_DIST): Add kern/experimental.srv.
(include_mach_HEADERS): Add include/mach/experimental.defs.
(nodist_lib_dep_tr_for_defs_a_SOURCES): Add
kern/experimental.server.defs.c.
(nodist_libkernel_a_SOURCES): Add kern/experimental.server.h,
kern/experimental.server.c, kern/experimental.server.msgids.
(nodist_libkernel_a_SOURCES): Add kern/experimental.server.defs.
* include/mach/experimental.defs: New file.
* kern/experimental.srv: New file.
* kern/ipc_kobject.c: Include <kern/experimental.server.h>.
(ipc_kobject_server): Call experimental_server_routine.
---
 Makefrag.am                    |  7 +++++++
 include/mach/experimental.defs | 15 +++++++++++++++
 kern/experimental.srv          |  3 +++
 kern/ipc_kobject.c             |  2 ++
 4 files changed, 27 insertions(+)
 create mode 100644 include/mach/experimental.defs
 create mode 100644 kern/experimental.srv

diff --git a/Makefrag.am b/Makefrag.am
index 4bc7a24f..9cf976a5 100644
--- a/Makefrag.am
+++ b/Makefrag.am
@@ -227,6 +227,7 @@ EXTRA_DIST += \
 	kern/mach.srv \
 	kern/mach4.srv \
 	kern/gnumach.srv \
+	kern/experimental.srv \
 	kern/mach_debug.srv \
 	kern/mach_host.srv \
 	kern/task_notify.cli
@@ -381,6 +382,7 @@ include_mach_HEADERS = \
 	include/mach/memory_object_default.defs \
 	include/mach/notify.defs \
 	include/mach/std_types.defs \
+	include/mach/experimental.defs \
 	include/mach/alert.h \
 	include/mach/boolean.h \
 	include/mach/boot.h \
@@ -531,6 +533,7 @@ nodist_lib_dep_tr_for_defs_a_SOURCES += \
 	kern/mach.server.defs.c \
 	kern/mach4.server.defs.c \
 	kern/gnumach.server.defs.c \
+	kern/experimental.server.defs.c \
 	kern/mach_debug.server.defs.c \
 	kern/mach_host.server.defs.c
 nodist_libkernel_a_SOURCES += \
@@ -543,6 +546,9 @@ nodist_libkernel_a_SOURCES += \
 	kern/gnumach.server.h \
 	kern/gnumach.server.c \
 	kern/gnumach.server.msgids \
+	kern/experimental.server.h \
+	kern/experimental.server.c \
+	kern/experimental.server.msgids \
 	kern/mach_debug.server.h \
 	kern/mach_debug.server.c \
 	kern/mach_debug.server.msgids \
@@ -552,6 +558,7 @@ nodist_libkernel_a_SOURCES += \
 #	kern/mach.server.defs
 #	kern/mach4.server.defs
 #	kern/gnumach.server.defs
+#	kern/experimental.server.defs
 #	kern/mach_debug.server.defs
 #	kern/mach_host.server.defs
 
diff --git a/include/mach/experimental.defs b/include/mach/experimental.defs
new file mode 100644
index 00000000..ddcbea5f
--- /dev/null
+++ b/include/mach/experimental.defs
@@ -0,0 +1,15 @@
+subsystem
+#if	KERNEL_USER
+	  KernelUser
+#endif	/* KERNEL_USER */
+#if	KERNEL_SERVER
+	  KernelServer
+#endif	/* KERNEL_SERVER */
+		experimental 424242;
+
+#include <mach/std_types.defs>
+#include <mach/mach_types.defs>
+
+serverprefix experimental_;
+
+/* This is free for experimenting RPCs, with no backward compatibility guarantees.  */
diff --git a/kern/experimental.srv b/kern/experimental.srv
new file mode 100644
index 00000000..2ccfd783
--- /dev/null
+++ b/kern/experimental.srv
@@ -0,0 +1,3 @@
+#define KERNEL_SERVER 1
+
+#include <mach/experimental.defs>
diff --git a/kern/ipc_kobject.c b/kern/ipc_kobject.c
index 709ec9ec..5ced4037 100644
--- a/kern/ipc_kobject.c
+++ b/kern/ipc_kobject.c
@@ -56,6 +56,7 @@
 #include <device/device_pager.server.h>
 #include <kern/mach4.server.h>
 #include <kern/gnumach.server.h>
+#include <kern/experimental.server.h>
 
 #if MACH_DEBUG
 #include <kern/mach_debug.server.h>
@@ -170,6 +171,7 @@ ipc_kobject_server(request)
 #endif	/* MACH_DEBUG */
 	 || (routine = mach4_server_routine(&request->ikm_header)) != 0
 	 || (routine = gnumach_server_routine(&request->ikm_header)) != 0
+	 || (routine = experimental_server_routine(&request->ikm_header)) != 0
 #if	MACH_MACHINE_ROUTINES
 	 || (routine = MACHINE_SERVER_ROUTINE(&request->ikm_header)) != 0
 #endif	/* MACH_MACHINE_ROUTINES */
-- 
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