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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* vim: set ft=c ts=4 sts=4 sw=4 noexpandtab smartindent: */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (C) Copyright 2012 Red Hat, Inc.
*/
/*
* This example monitors whether NM is running by checking if
* "org.freedesktop.NetworkManager" is owned by a process on D-Bus.
* It uses g_bus_watch_name().
*
* See also http://developer.gnome.org/gio/stable/gio-Watching-Bus-Names.html
*
* Standalone compilation:
* gcc -Wall `pkg-config --libs --cflags glib-2.0 gio-2.0` monitor-nm-running-GDBus.c -o monitor-nm-running-GDBus
*/
#include <gio/gio.h>
static void
on_name_appeared (GDBusConnection *connection,
const gchar *name,
const gchar *name_owner,
gpointer user_data)
{
g_print ("Name '%s' on the system bus is owned by %s => NM is running\n",
name, name_owner);
}
static void
on_name_vanished (GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
g_print ("Name '%s' does not exist on the system bus => NM is not running\n", name);
}
int
main (int argc, char *argv[])
{
guint watcher_id;
GMainLoop *loop;
GBusNameWatcherFlags flags;
#if !GLIB_CHECK_VERSION (2, 35, 0)
/* Initialize GType system */
g_type_init ();
#endif
g_print ("Monitor 'org.freedesktop.NetworkManager' D-Bus name\n");
g_print ("===================================================\n");
flags = G_BUS_NAME_WATCHER_FLAGS_NONE;
/* Start to watch "org.freedesktop.NetworkManager" bus name */
watcher_id = g_bus_watch_name (G_BUS_TYPE_SYSTEM,
"org.freedesktop.NetworkManager",
flags,
on_name_appeared,
on_name_vanished,
NULL,
NULL);
/* Run main loop */
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
/* Stop watching the name */
g_bus_unwatch_name (watcher_id);
return 0;
}
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