Register new Control.Host bus in ipmid

This sets up the framework for future commits to implement
the required interfaces and signals in Control.Host

Change-Id: I43cd7d3047ed9cfbf1a01e7ba3a0310e9d47c307
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
diff --git a/host-services.cpp b/host-services.cpp
new file mode 100644
index 0000000..c78d90a
--- /dev/null
+++ b/host-services.cpp
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <systemd/sd-bus.h>
+#include <mapper.h>
+#include "host-ipmid/ipmid-api.h"
+#include "host-interface.hpp"
+#include <config.h>
+
+void register_host_services() __attribute__((constructor));
+
+//------------------------------------------------------
+// Callback register function
+// -----------------------------------------------------
+
+// Globals to keep the object alive during process life
+std::unique_ptr<sdbusplus::bus::bus> sdbus = nullptr;
+// TODO openbmc/openbmc#1581 - unique_ptr causes seg fault
+phosphor::host::Host* host = nullptr;
+
+void register_host_services()
+{
+    // Gets a hook onto SYSTEM bus used by host-ipmid
+    sd_bus *bus = ipmid_get_sd_bus_connection();
+
+    sdbus = std::make_unique<sdbusplus::bus::bus>(bus);
+
+    // Create new xyz.openbmc_project.host object on the bus
+    auto objPathInst = std::string{CONTROL_HOST_OBJPATH} + '0';
+
+    // Add sdbusplus ObjectManager.
+    sdbusplus::server::manager::manager objManager(*sdbus,
+                                                   objPathInst.c_str());
+
+    host = new phosphor::host::Host(*sdbus,
+                                    objPathInst.c_str());
+
+    sdbus->request_name(CONTROL_HOST_BUSNAME);
+}