Imported Upstream version 0.8.1 upstream/0.8.1

1 files changed, 681 insertions, 0 deletions

diff --git a/system-settings/plugins/ifupdown/plugin.c b/system-settings/plugins/ifupdown/plugin.c
new file mode 100644
index 00000000..e2358b9f
--- /dev/null
+++ b/system-settings/plugins/ifupdown/plugin.c
@@ -0,0 +1,681 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+
+/* NetworkManager system settings service (ifupdown)
+ *
+ * Alexander Sack <asac@ubuntu.com>
+ *
+ * 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 2007,2008 Canonical Ltd.
+ * (C) Copyright 2009 Red Hat, Inc.
+ */
+
+#include <string.h>
+#include <sys/inotify.h>
+
+#include <net/ethernet.h>
+#include <netinet/ether.h>
+
+#include <gmodule.h>
+#include <glib-object.h>
+#include <glib/gi18n.h>
+#include <glib.h>
+#include <nm-setting-connection.h>
+
+#include "interface_parser.h"
+
+#include "NetworkManager.h"
+#include "nm-system-config-interface.h"
+#include "nm-setting-ip4-config.h"
+#include "nm-setting-wireless.h"
+#include "nm-setting-wired.h"
+#include "nm-setting-ppp.h"
+
+#include "nm-ifupdown-connection.h"
+#include "plugin.h"
+#include "parser.h"
+#include "nm-inotify-helper.h"
+
+#include <nm-utils.h>
+
+#include <arpa/inet.h>
+
+#define G_UDEV_API_IS_SUBJECT_TO_CHANGE
+#include <gudev/gudev.h>
+
+#define IFUPDOWN_PLUGIN_NAME "ifupdown"
+#define IFUPDOWN_PLUGIN_INFO "(C) 2008 Canonical Ltd.  To report bugs please use the NetworkManager mailing list."
+#define IFUPDOWN_SYSTEM_HOSTNAME_FILE "/etc/hostname"
+
+#define IFUPDOWN_SYSTEM_SETTINGS_KEY_FILE SYSCONFDIR "/NetworkManager/NetworkManager.conf"
+#define IFUPDOWN_OLD_SYSTEM_SETTINGS_KEY_FILE SYSCONFDIR "/NetworkManager/nm-system-settings.conf"
+
+#define IFUPDOWN_KEY_FILE_GROUP "ifupdown"
+#define IFUPDOWN_KEY_FILE_KEY_MANAGED "managed"
+#define IFUPDOWN_UNMANAGE_WELL_KNOWN_DEFAULT TRUE
+
+/* #define ALWAYS_UNMANAGE TRUE */
+#ifndef ALWAYS_UNMANAGE
+#	define ALWAYS_UNMANAGE FALSE
+#endif
+
+typedef struct {
+	GUdevClient *client;
+
+	GHashTable *iface_connections;
+	gchar* hostname;
+
+	GHashTable *well_known_interfaces;
+	GHashTable *well_known_ifaces;
+	gboolean unmanage_well_known;
+	const char *conf_file;
+
+	gulong inotify_event_id;
+	int inotify_system_hostname_wd;
+} SCPluginIfupdownPrivate;
+
+static void
+system_config_interface_init (NMSystemConfigInterface *system_config_interface_class);
+
+G_DEFINE_TYPE_EXTENDED (SCPluginIfupdown, sc_plugin_ifupdown, G_TYPE_OBJECT, 0,
+                        G_IMPLEMENT_INTERFACE (NM_TYPE_SYSTEM_CONFIG_INTERFACE,
+                                               system_config_interface_init))
+
+#define SC_PLUGIN_IFUPDOWN_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SC_TYPE_PLUGIN_IFUPDOWN, SCPluginIfupdownPrivate))
+
+static void
+sc_plugin_ifupdown_class_init (SCPluginIfupdownClass *req_class);
+
+static void
+SCPluginIfupdown_init (NMSystemConfigInterface *config);
+
+/* Returns the plugins currently known list of connections.  The returned
+ * list is freed by the system settings service.
+ */
+static GSList*
+SCPluginIfupdown_get_connections (NMSystemConfigInterface *config);
+
+/*
+ * Return a list of device specifications which NetworkManager should not
+ * manage.  Returned list will be freed by the system settings service, and
+ * each element must be allocated using g_malloc() or its variants.
+ */
+static GSList*
+SCPluginIfupdown_get_unmanaged_specs (NMSystemConfigInterface *config);
+
+
+/*  GObject */
+static void
+GObject__get_property (GObject *object, guint prop_id,
+				   GValue *value, GParamSpec *pspec);
+
+static void
+GObject__set_property (GObject *object, guint prop_id,
+				   const GValue *value, GParamSpec *pspec);
+
+static void
+GObject__dispose (GObject *object);
+
+/* other helpers */
+static const char *
+get_hostname (NMSystemConfigInterface *config);
+
+
+static void
+update_system_hostname(NMInotifyHelper *inotify_helper,
+                       struct inotify_event *evt,
+                       const char *path,
+                       NMSystemConfigInterface *config);
+
+
+static void
+system_config_interface_init (NMSystemConfigInterface *system_config_interface_class)
+{
+	system_config_interface_class->init = SCPluginIfupdown_init;
+	system_config_interface_class->get_connections = SCPluginIfupdown_get_connections;
+	system_config_interface_class->get_unmanaged_specs = SCPluginIfupdown_get_unmanaged_specs;
+}
+
+static void
+sc_plugin_ifupdown_class_init (SCPluginIfupdownClass *req_class)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (req_class);
+
+	g_type_class_add_private (req_class, sizeof (SCPluginIfupdownPrivate));
+
+	object_class->dispose = GObject__dispose;
+	object_class->get_property = GObject__get_property;
+	object_class->set_property = GObject__set_property;
+
+	g_object_class_override_property (object_class,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_PROP_NAME,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_NAME);
+
+	g_object_class_override_property (object_class,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_PROP_INFO,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_INFO);
+
+	g_object_class_override_property (object_class,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_PROP_CAPABILITIES,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_CAPABILITIES);
+
+	g_object_class_override_property (object_class,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME,
+	                                  NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME);
+}
+
+static void
+ignore_cb (NMSettingsConnectionInterface *connection,
+           GError *error,
+           gpointer user_data)
+{
+}
+
+static void
+bind_device_to_connection (SCPluginIfupdown *self,
+                           GUdevDevice *device,
+                           NMIfupdownConnection *exported)
+{
+	GByteArray *mac_address;
+	NMSetting *s_wired = NULL;
+	NMSetting *s_wifi = NULL;
+	const char *iface, *address;
+	struct ether_addr *tmp_mac;
+
+	iface = g_udev_device_get_name (device);
+	if (!iface) {
+		PLUGIN_WARN ("SCPluginIfupdown", "failed to get ifname for device.");
+		return;
+	}
+
+	address = g_udev_device_get_sysfs_attr (device, "address");
+	if (!address || !strlen (address)) {
+		PLUGIN_WARN ("SCPluginIfupdown", "failed to get MAC address for %s", iface);
+		return;
+	}
+
+	tmp_mac = ether_aton (address);
+	if (!tmp_mac) {
+		PLUGIN_WARN ("SCPluginIfupdown", "failed to parse MAC address '%s' for %s",
+		             address, iface);
+		return;
+	}
+
+	mac_address = g_byte_array_sized_new (ETH_ALEN);
+	g_byte_array_append (mac_address, &(tmp_mac->ether_addr_octet[0]), ETH_ALEN);
+
+	s_wired = nm_connection_get_setting (NM_CONNECTION (exported), NM_TYPE_SETTING_WIRED);
+	s_wifi = nm_connection_get_setting (NM_CONNECTION (exported), NM_TYPE_SETTING_WIRELESS);
+	if (s_wired) {
+		PLUGIN_PRINT ("SCPluginIfupdown", "locking wired connection setting");
+		g_object_set (s_wired, NM_SETTING_WIRED_MAC_ADDRESS, mac_address, NULL);
+	} else if (s_wifi) {
+		PLUGIN_PRINT ("SCPluginIfupdown", "locking wireless connection setting");
+		g_object_set (s_wifi, NM_SETTING_WIRELESS_MAC_ADDRESS, mac_address, NULL);
+	}
+	g_byte_array_free (mac_address, TRUE);
+
+	nm_settings_connection_interface_update (NM_SETTINGS_CONNECTION_INTERFACE (exported),
+	                                         ignore_cb,
+	                                         NULL);
+}    
+
+static void
+udev_device_added (SCPluginIfupdown *self, GUdevDevice *device)
+{
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
+	const char *iface, *path;
+	NMIfupdownConnection *exported;
+
+	iface = g_udev_device_get_name (device);
+	path = g_udev_device_get_sysfs_path (device);
+	if (!iface || !path)
+		return;
+
+	PLUGIN_PRINT("SCPlugin-Ifupdown",
+	             "devices added (path: %s, iface: %s)", path, iface);
+
+	/* if we have a configured connection for this particular iface
+	 * we want to either unmanage the device or lock it
+	 */
+	exported = (NMIfupdownConnection *) g_hash_table_lookup (priv->iface_connections, iface);
+	if (!exported && !g_hash_table_lookup (priv->well_known_interfaces, iface)) {
+		PLUGIN_PRINT("SCPlugin-Ifupdown",
+			"device added (path: %s, iface: %s): no ifupdown configuration found.", path, iface);
+		return;
+	}
+
+	g_hash_table_insert (priv->well_known_ifaces, g_strdup (iface), g_object_ref (device));
+
+	if (exported)
+		bind_device_to_connection (self, device, exported);
+
+	if (ALWAYS_UNMANAGE || priv->unmanage_well_known)
+		g_signal_emit_by_name (G_OBJECT (self), NM_SYSTEM_CONFIG_INTERFACE_UNMANAGED_SPECS_CHANGED);
+}
+
+static void
+udev_device_removed (SCPluginIfupdown *self, GUdevDevice *device)
+{
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
+	const char *iface, *path;
+
+	iface = g_udev_device_get_name (device);
+	path = g_udev_device_get_sysfs_path (device);
+	if (!iface || !path)
+		return;
+
+	PLUGIN_PRINT("SCPlugin-Ifupdown",
+	             "devices removed (path: %s, iface: %s)", path, iface);
+
+	if (!g_hash_table_remove (priv->well_known_ifaces, iface))
+		return;
+
+	if (ALWAYS_UNMANAGE || priv->unmanage_well_known)
+		g_signal_emit_by_name (G_OBJECT (self), NM_SYSTEM_CONFIG_INTERFACE_UNMANAGED_SPECS_CHANGED);
+}
+
+static void
+handle_uevent (GUdevClient *client,
+               const char *action,
+               GUdevDevice *device,
+               gpointer user_data)
+{
+	SCPluginIfupdown *self = SC_PLUGIN_IFUPDOWN (user_data);
+	const char *subsys;
+
+	g_return_if_fail (action != NULL);
+
+	/* A bit paranoid */
+	subsys = g_udev_device_get_subsystem (device);
+	g_return_if_fail (subsys != NULL);
+	g_return_if_fail (strcmp (subsys, "net") == 0);
+
+	if (!strcmp (action, "add"))
+		udev_device_added (self, device);
+	else if (!strcmp (action, "remove"))
+		udev_device_removed (self, device);
+}
+
+static void
+SCPluginIfupdown_init (NMSystemConfigInterface *config)
+{
+	SCPluginIfupdown *self = SC_PLUGIN_IFUPDOWN (config);
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
+	GHashTable *auto_ifaces;
+	if_block *block = NULL;
+	NMInotifyHelper *inotify_helper;
+	GKeyFile* keyfile;
+	GError *error = NULL;
+	GList *keys, *iter;
+	const char *subsys[2] = { "net", NULL };
+
+	auto_ifaces = g_hash_table_new (g_str_hash, g_str_equal);
+
+	if(!priv->iface_connections)
+		priv->iface_connections = g_hash_table_new (g_str_hash, g_str_equal);
+
+	if(!priv->well_known_ifaces)
+		priv->well_known_ifaces = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
+
+	if(!priv->well_known_interfaces)
+		priv->well_known_interfaces = g_hash_table_new (g_str_hash, g_str_equal);
+
+	PLUGIN_PRINT("SCPlugin-Ifupdown", "init!");
+
+	priv->client = g_udev_client_new (subsys);
+	if (!priv->client) {
+		PLUGIN_WARN ("SCPlugin-Ifupdown", "    error initializing libgudev");
+	} else
+		g_signal_connect (priv->client, "uevent", G_CALLBACK (handle_uevent), self);
+
+	priv->unmanage_well_known = IFUPDOWN_UNMANAGE_WELL_KNOWN_DEFAULT;
+ 
+	inotify_helper = nm_inotify_helper_get ();
+	priv->inotify_event_id = g_signal_connect (inotify_helper,
+	                                           "event",
+	                                           G_CALLBACK (update_system_hostname),
+	                                           config);
+
+	priv->inotify_system_hostname_wd =
+		nm_inotify_helper_add_watch (inotify_helper, IFUPDOWN_SYSTEM_HOSTNAME_FILE);
+
+	update_system_hostname (inotify_helper, NULL, NULL, config);
+
+	/* Read in all the interfaces */
+	ifparser_init ();
+	block = ifparser_getfirst ();
+	while (block) {
+		if(!strcmp ("auto", block->type) || !strcmp ("allow-hotplug", block->type))
+			g_hash_table_insert (auto_ifaces, block->name, GUINT_TO_POINTER (1));
+		else if (!strcmp ("iface", block->type) && strcmp ("lo", block->name)) {
+			NMIfupdownConnection *exported;
+
+			/* Remove any connection for this block that was previously found */
+			exported = g_hash_table_lookup (priv->iface_connections, block->name);
+			if (exported) {
+				nm_settings_connection_interface_delete (NM_SETTINGS_CONNECTION_INTERFACE (exported),
+				                                         ignore_cb,
+				                                         NULL);
+				g_hash_table_remove (priv->iface_connections, block->name);
+			}
+
+			/* add the new connection */
+			exported = nm_ifupdown_connection_new (block);
+			if (exported) {
+				g_hash_table_insert (priv->iface_connections, block->name, exported);
+				g_hash_table_insert (priv->well_known_interfaces, block->name, "known");
+			}
+		} else if (!strcmp ("mapping", block->type)) {
+			g_hash_table_insert (priv->well_known_interfaces, block->name, "known");
+		}
+		block = block->next;
+	}
+
+	/* Make 'auto' interfaces autoconnect=TRUE */
+	keys = g_hash_table_get_keys (priv->iface_connections);
+	for (iter = keys; iter; iter = g_list_next (iter)) {
+		NMIfupdownConnection *exported;
+		NMSetting *setting;
+
+		if (!g_hash_table_lookup (auto_ifaces, iter->data))
+			continue;
+
+		exported = g_hash_table_lookup (priv->iface_connections, iter->data);
+		setting = NM_SETTING (nm_connection_get_setting (NM_CONNECTION (exported), NM_TYPE_SETTING_CONNECTION));
+		g_object_set (setting, NM_SETTING_CONNECTION_AUTOCONNECT, TRUE, NULL);
+
+		nm_settings_connection_interface_update (NM_SETTINGS_CONNECTION_INTERFACE (exported),
+		                                         ignore_cb,
+		                                         NULL);
+
+		PLUGIN_PRINT("SCPlugin-Ifupdown", "autoconnect");
+	}
+	g_list_free (keys);
+	g_hash_table_destroy (auto_ifaces);
+
+	/* Find the config file */
+	if (g_file_test (IFUPDOWN_SYSTEM_SETTINGS_KEY_FILE, G_FILE_TEST_EXISTS))
+		priv->conf_file = IFUPDOWN_SYSTEM_SETTINGS_KEY_FILE;
+	else
+		priv->conf_file = IFUPDOWN_OLD_SYSTEM_SETTINGS_KEY_FILE;
+
+	keyfile = g_key_file_new ();
+	if (!g_key_file_load_from_file (keyfile,
+	                                priv->conf_file,
+	                                G_KEY_FILE_NONE,
+	                                &error)) {
+		nm_info ("loading system config file (%s) caused error: (%d) %s",
+		         priv->conf_file,
+		         error ? error->code : -1,
+		         error && error->message ? error->message : "(unknown)");
+	} else {
+		gboolean manage_well_known;
+		error = NULL;
+
+		manage_well_known = g_key_file_get_boolean (keyfile,
+		                                            IFUPDOWN_KEY_FILE_GROUP,
+		                                            IFUPDOWN_KEY_FILE_KEY_MANAGED,
+		                                            &error);
+		if (error) {
+			nm_info ("getting keyfile key '%s' in group '%s' failed: (%d) %s",
+			         IFUPDOWN_KEY_FILE_GROUP,
+			         IFUPDOWN_KEY_FILE_KEY_MANAGED,
+			         error ? error->code : -1,
+			         error && error->message ? error->message : "(unknown)");
+		} else
+			priv->unmanage_well_known = !manage_well_known;
+	}
+	PLUGIN_PRINT ("SCPluginIfupdown", "management mode: %s", priv->unmanage_well_known ? "unmanaged" : "managed");
+	if (keyfile)
+		g_key_file_free (keyfile);
+
+	/* Add well-known interfaces */
+	keys = g_udev_client_query_by_subsystem (priv->client, "net");
+	for (iter = keys; iter; iter = g_list_next (iter)) {
+		udev_device_added (self, G_UDEV_DEVICE (iter->data));
+		g_object_unref (G_UDEV_DEVICE (iter->data));
+	}
+	g_list_free (keys);
+
+	/* Now if we're running in managed mode, let NM know there are new connections */
+	if (!priv->unmanage_well_known) {
+		GList *con_list = g_hash_table_get_values (priv->iface_connections);
+		GList *cl_iter;
+
+		for (cl_iter = con_list; cl_iter; cl_iter = g_list_next (cl_iter)) {
+			g_signal_emit_by_name (self,
+			                       NM_SYSTEM_CONFIG_INTERFACE_CONNECTION_ADDED,
+			                       NM_EXPORTED_CONNECTION (cl_iter->data));
+		}
+		g_list_free (con_list);
+	}
+
+	PLUGIN_PRINT("SCPlugin-Ifupdown", "end _init.");
+}
+
+
+/* Returns the plugins currently known list of connections.  The returned
+ * list is freed by the system settings service.
+ */
+static GSList*
+SCPluginIfupdown_get_connections (NMSystemConfigInterface *config)
+{
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (config);
+	GSList *connections = NULL;
+	GHashTableIter iter;
+	gpointer value;
+
+	PLUGIN_PRINT("SCPlugin-Ifupdown", "(%d) ... get_connections.", GPOINTER_TO_UINT(config));
+
+	if(priv->unmanage_well_known) {
+		PLUGIN_PRINT("SCPlugin-Ifupdown", "(%d) ... get_connections (managed=false): return empty list.", GPOINTER_TO_UINT(config));
+		return NULL;
+	}
+
+	g_hash_table_iter_init (&iter, priv->iface_connections);
+	while (g_hash_table_iter_next (&iter, NULL, &value))
+		connections = g_slist_prepend (connections, value);
+
+	PLUGIN_PRINT("SCPlugin-Ifupdown", "(%d) connections count: %d", GPOINTER_TO_UINT(config), g_slist_length(connections));
+	return connections;
+}
+
+/*
+ * Return a list of device specifications which NetworkManager should not
+ * manage.  Returned list will be freed by the system settings service, and
+ * each element must be allocated using g_malloc() or its variants.
+ */
+static GSList*
+SCPluginIfupdown_get_unmanaged_specs (NMSystemConfigInterface *config)
+{
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (config);
+	GSList *specs = NULL;
+	GHashTableIter iter;
+	gpointer value;
+
+	if (!ALWAYS_UNMANAGE && !priv->unmanage_well_known)
+		return NULL;
+
+	PLUGIN_PRINT("Ifupdown", "get unmanaged devices count: %d",
+	             g_hash_table_size (priv->well_known_ifaces));
+
+	g_hash_table_iter_init (&iter, priv->well_known_ifaces);
+	while (g_hash_table_iter_next (&iter, NULL, &value)) {
+		GUdevDevice *device = G_UDEV_DEVICE (value);
+		const char *address;
+
+		address = g_udev_device_get_sysfs_attr (device, "address");
+		if (address)
+			specs = g_slist_append (specs, g_strdup_printf ("mac:%s", address));
+	}
+	return specs;
+}
+
+
+static const char *
+get_hostname (NMSystemConfigInterface *config)
+{
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (config);
+	return priv->hostname;
+}
+
+static void
+update_system_hostname(NMInotifyHelper *inotify_helper,
+                       struct inotify_event *evt,
+                       const char *path,
+                       NMSystemConfigInterface *config)
+{
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (config);
+	gchar *hostname_file = NULL;
+	gsize hostname_file_len = 0;
+	GError *error = NULL;
+
+	PLUGIN_PRINT ("SCPlugin-Ifupdown", "update_system_hostname");
+
+	if (evt && evt->wd != priv->inotify_system_hostname_wd)
+		return;
+
+	if(!g_file_get_contents ( IFUPDOWN_SYSTEM_HOSTNAME_FILE,
+						 &hostname_file,
+						 &hostname_file_len,
+						 &error)) {
+		nm_warning ("update_system_hostname() - couldn't read "
+				  IFUPDOWN_SYSTEM_HOSTNAME_FILE " (%d/%s)",
+				  error->code, error->message);
+		return;
+	}
+
+	if (priv->hostname)
+		g_free(priv->hostname);
+
+	priv->hostname = g_strstrip(hostname_file);
+
+	g_object_notify (G_OBJECT (config), NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME);
+}
+
+static void
+write_system_hostname(NMSystemConfigInterface *config,
+				  const char *newhostname)
+{
+	GError *error = NULL;
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (config);
+	PLUGIN_PRINT ("SCPlugin-Ifupdown", "write_system_hostname: %s", newhostname);
+
+	g_return_if_fail (newhostname);
+
+	if(!g_file_set_contents ( IFUPDOWN_SYSTEM_HOSTNAME_FILE,
+						 newhostname,
+						 -1,
+						 &error)) {
+		nm_warning ("update_system_hostname() - couldn't write hostname (%s) to "
+				  IFUPDOWN_SYSTEM_HOSTNAME_FILE " (%d/%s)",
+				  newhostname, error->code, error->message);	
+	} else {
+		priv->hostname = g_strdup (newhostname);
+	}
+	g_object_notify (G_OBJECT (config), NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME);
+}
+
+
+static void
+sc_plugin_ifupdown_init (SCPluginIfupdown *plugin)
+{
+}
+
+static void
+GObject__get_property (GObject *object, guint prop_id,
+				   GValue *value, GParamSpec *pspec)
+{
+	NMSystemConfigInterface *self = NM_SYSTEM_CONFIG_INTERFACE (object);
+
+	switch (prop_id) {
+	case NM_SYSTEM_CONFIG_INTERFACE_PROP_NAME:
+		g_value_set_string (value, IFUPDOWN_PLUGIN_NAME);
+		break;
+	case NM_SYSTEM_CONFIG_INTERFACE_PROP_INFO:
+		g_value_set_string (value, IFUPDOWN_PLUGIN_INFO);
+		break;
+	case NM_SYSTEM_CONFIG_INTERFACE_PROP_CAPABILITIES:
+		g_value_set_uint (value, NM_SYSTEM_CONFIG_INTERFACE_CAP_MODIFY_HOSTNAME);
+		break;
+	case NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME:
+		{
+			g_value_set_string (value, get_hostname(self));
+			break;
+		}
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+GObject__set_property (GObject *object, guint prop_id,
+				   const GValue *value, GParamSpec *pspec)
+{
+	switch (prop_id) {
+	case NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME:
+		{
+			const gchar *hostname = g_value_get_string (value);
+			if (hostname && strlen (hostname) < 1)
+				hostname = NULL;
+			write_system_hostname(NM_SYSTEM_CONFIG_INTERFACE(object),
+							  hostname);
+			break;
+		}
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+GObject__dispose (GObject *object)
+{
+	SCPluginIfupdown *plugin = SC_PLUGIN_IFUPDOWN (object);
+	SCPluginIfupdownPrivate *priv = SC_PLUGIN_IFUPDOWN_GET_PRIVATE (plugin);
+	NMInotifyHelper *inotify_helper = nm_inotify_helper_get ();
+
+	g_signal_handler_disconnect (inotify_helper, priv->inotify_event_id);
+
+	if (priv->inotify_system_hostname_wd >= 0)
+		nm_inotify_helper_remove_watch (inotify_helper, priv->inotify_system_hostname_wd);
+
+	if (priv->well_known_ifaces)
+		g_hash_table_destroy(priv->well_known_ifaces);
+
+	if (priv->well_known_interfaces)
+		g_hash_table_destroy(priv->well_known_interfaces);
+
+	if (priv->client)
+		g_object_unref (priv->client);
+
+	G_OBJECT_CLASS (sc_plugin_ifupdown_parent_class)->dispose (object);
+}
+
+G_MODULE_EXPORT GObject *
+nm_system_config_factory (void)
+{
+	static SCPluginIfupdown *singleton = NULL;
+
+	if (!singleton)
+		singleton = SC_PLUGIN_IFUPDOWN (g_object_new (SC_TYPE_PLUGIN_IFUPDOWN, NULL));
+	else
+		g_object_ref (singleton);
+
+	return G_OBJECT (singleton);
+}
+