diff options
Diffstat (limited to 'examples/C/glib/monitor-nm-running-gdbus.c')
| -rw-r--r-- | examples/C/glib/monitor-nm-running-gdbus.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/examples/C/glib/monitor-nm-running-gdbus.c b/examples/C/glib/monitor-nm-running-gdbus.c new file mode 100644 index 0000000000..2e1a11c0c8 --- /dev/null +++ b/examples/C/glib/monitor-nm-running-gdbus.c @@ -0,0 +1,87 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ +/* + * 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. + * + * 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; +} + |