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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 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 monitor-nm-running-gdbus.c -o monitor-nm-running-gdbus `pkg-config --libs --cflags gio-2.0`
*/
#include <gio/gio.h>
static void
on_name_appeared(GDBusConnection *connection,
const char *name,
const char *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 char *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;
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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