Add plugin support infrastructure

1 files changed, 76 insertions, 0 deletions

diff --git a/include/plugin.h b/include/plugin.h
new file mode 100644
index 00000000..4b01ad43
--- /dev/null
+++ b/include/plugin.h
@@ -0,0 +1,76 @@
+/*
+ *
+ *  oFono - Open Telephony stack for Linux
+ *
+ *  Copyright (C) 2008-2009  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __OFONO_PLUGIN_H
+#define __OFONO_PLUGIN_H
+
+#include <ofono/version.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef OFONO_API_SUBJECT_TO_CHANGE
+#error "Please define OFONO_API_SUBJECT_TO_CHANGE to acknowledge your \
+understanding that oFono hasn't reached a stable API."
+#endif
+
+#define OFONO_PLUGIN_PRIORITY_LOW      -100
+#define OFONO_PLUGIN_PRIORITY_DEFAULT     0
+#define OFONO_PLUGIN_PRIORITY_HIGH      100
+
+/**
+ * SECTION:plugin
+ * @title: Plugin premitives
+ * @short_description: Functions for declaring plugins
+ */
+
+struct ofono_plugin_desc {
+	const char *name;
+	const char *description;
+	const char *version;
+	int priority;
+	int (*init) (void);
+	void (*exit) (void);
+};
+
+/**
+ * OFONO_PLUGIN_DEFINE:
+ * @name: plugin name
+ * @description: plugin description
+ * @version: plugin version string
+ * @init: init function called on plugin loading
+ * @exit: exit function called on plugin removal
+ *
+ * Macro for defining a plugin descriptor
+ */
+#define OFONO_PLUGIN_DEFINE(name, description, version, priority, init, exit) \
+		extern struct ofono_plugin_desc ofono_plugin_desc \
+				__attribute__ ((visibility("default"))); \
+		struct ofono_plugin_desc ofono_plugin_desc = { \
+			#name, description, version, priority, init, exit \
+		};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __OFONO_PLUGIN_H */