8bace23beb
- All internal source files (except "examples", which are not internal) should include "config.h" first. As also all internal source files should include "nm-default.h", let "config.h" be included by "nm-default.h" and include "nm-default.h" as first in every source file. We already wanted to include "nm-default.h" before other headers because it might contains some fixes (like "nm-glib.h" compatibility) that is required first. - After including "nm-default.h", we optinally allow for including the corresponding header file for the source file at hand. The idea is to ensure that each header file is self contained. - Don't include "config.h" or "nm-default.h" in any header file (except "nm-sd-adapt.h"). Public headers anyway must not include these headers, and internal headers are never included after "nm-default.h", as of the first previous point. - Include all internal headers with quotes instead of angle brackets. In practice it doesn't matter, because in our public headers we must include other headers with angle brackets. As we use our public headers also to compile our interal source files, effectively the result must be the same. Still do it for consistency. - Except for <config.h> itself. Include it with angle brackets as suggested by https://www.gnu.org/software/autoconf/manual/autoconf.html#Configuration-Headers
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright 2012 Red Hat, Inc.
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*/
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/*
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* This example monitors whether NM is running by checking if
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* "org.freedesktop.NetworkManager" is owned by a process on D-Bus.
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* It uses g_bus_watch_name().
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*
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* See also http://developer.gnome.org/gio/stable/gio-Watching-Bus-Names.html
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*
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* Standalone compilation:
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* gcc -Wall `pkg-config --libs --cflags glib-2.0 gio-2.0` monitor-nm-running-gdbus.c -o monitor-nm-running-gdbus
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*/
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#include <gio/gio.h>
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static void
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on_name_appeared (GDBusConnection *connection,
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const gchar *name,
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const gchar *name_owner,
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gpointer user_data)
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{
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g_print ("Name '%s' on the system bus is owned by %s => NM is running\n",
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name, name_owner);
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}
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static void
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on_name_vanished (GDBusConnection *connection,
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const gchar *name,
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gpointer user_data)
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{
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g_print ("Name '%s' does not exist on the system bus => NM is not running\n", name);
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}
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int
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main (int argc, char *argv[])
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{
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guint watcher_id;
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GMainLoop *loop;
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GBusNameWatcherFlags flags;
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#if !GLIB_CHECK_VERSION (2, 35, 0)
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/* Initialize GType system */
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g_type_init ();
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#endif
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g_print ("Monitor 'org.freedesktop.NetworkManager' D-Bus name\n");
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g_print ("===================================================\n");
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flags = G_BUS_NAME_WATCHER_FLAGS_NONE;
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/* Start to watch "org.freedesktop.NetworkManager" bus name */
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watcher_id = g_bus_watch_name (G_BUS_TYPE_SYSTEM,
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"org.freedesktop.NetworkManager",
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flags,
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on_name_appeared,
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on_name_vanished,
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NULL,
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NULL);
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/* Run main loop */
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loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (loop);
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/* Stop watching the name */
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g_bus_unwatch_name (watcher_id);
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return 0;
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}
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