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https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2026-06-05 11:18:21 +02:00
When building with assertions, they nm_assert() for the type. Otherwise, they are identical to a C cast. Also, where possible, don't cast at all, but adjust the type instead. Also, there were a few missing casts.
546 lines
18 KiB
C
546 lines
18 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* NetworkManager system settings service (ifupdown)
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*
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* Alexander Sack <asac@ubuntu.com>
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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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* (C) Copyright 2007,2008 Canonical Ltd.
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* (C) Copyright 2009 - 2011 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include "nms-ifupdown-plugin.h"
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#include <string.h>
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#include <arpa/inet.h>
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#include <gmodule.h>
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#include <libudev.h>
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#include "nm-setting-connection.h"
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#include "nm-dbus-interface.h"
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#include "settings/nm-settings-plugin.h"
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#include "nm-setting-ip4-config.h"
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#include "nm-setting-wireless.h"
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#include "nm-setting-wired.h"
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#include "nm-setting-ppp.h"
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#include "nm-utils.h"
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#include "nm-core-internal.h"
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#include "NetworkManagerUtils.h"
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#include "nm-config.h"
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#include "nm-utils/nm-udev-utils.h"
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#include "nms-ifupdown-interface-parser.h"
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#include "nms-ifupdown-connection.h"
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#include "nms-ifupdown-parser.h"
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#define ENI_INTERFACES_FILE "/etc/network/interfaces"
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#define IFUPDOWN_PLUGIN_NAME "ifupdown"
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#define IFUPDOWN_PLUGIN_INFO "(C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list."
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#define IFUPDOWN_UNMANAGE_WELL_KNOWN_DEFAULT TRUE
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/* #define ALWAYS_UNMANAGE TRUE */
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#ifndef ALWAYS_UNMANAGE
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#define ALWAYS_UNMANAGE FALSE
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#endif
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/*****************************************************************************/
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typedef struct {
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NMUdevClient *udev_client;
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GHashTable *connections; /* /e/n/i block name :: NMIfupdownConnection */
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/* Stores all blocks/interfaces read from /e/n/i regardless of whether
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* there is an NMIfupdownConnection for block.
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*/
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GHashTable *eni_ifaces;
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/* Stores any network interfaces the kernel knows about */
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GHashTable *kernel_ifaces;
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gboolean unmanage_well_known;
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} SettingsPluginIfupdownPrivate;
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struct _SettingsPluginIfupdown {
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GObject parent;
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SettingsPluginIfupdownPrivate _priv;
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};
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struct _SettingsPluginIfupdownClass {
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GObjectClass parent;
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};
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static void settings_plugin_interface_init (NMSettingsPluginInterface *plugin_iface);
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G_DEFINE_TYPE_EXTENDED (SettingsPluginIfupdown, settings_plugin_ifupdown, G_TYPE_OBJECT, 0,
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G_IMPLEMENT_INTERFACE (NM_TYPE_SETTINGS_PLUGIN,
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settings_plugin_interface_init))
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#define SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE(self) _NM_GET_PRIVATE (self, SettingsPluginIfupdown, SETTINGS_IS_PLUGIN_IFUPDOWN)
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/*****************************************************************************/
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static SettingsPluginIfupdown *settings_plugin_ifupdown_get (void);
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NM_DEFINE_SINGLETON_GETTER (SettingsPluginIfupdown, settings_plugin_ifupdown_get, SETTINGS_TYPE_PLUGIN_IFUPDOWN);
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/*****************************************************************************/
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static void
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bind_device_to_connection (SettingsPluginIfupdown *self,
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struct udev_device *device,
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NMIfupdownConnection *exported)
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{
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NMSettingWired *s_wired;
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NMSettingWireless *s_wifi;
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const char *iface, *address;
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iface = udev_device_get_sysname (device);
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if (!iface) {
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nm_log_warn (LOGD_SETTINGS, "failed to get ifname for device.");
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return;
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}
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address = udev_device_get_sysattr_value (device, "address");
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if (!address || !address[0]) {
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nm_log_warn (LOGD_SETTINGS, "failed to get MAC address for %s", iface);
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return;
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}
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if (!nm_utils_hwaddr_valid (address, ETH_ALEN)) {
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nm_log_warn (LOGD_SETTINGS, "failed to parse MAC address '%s' for %s",
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address, iface);
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return;
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}
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s_wired = nm_connection_get_setting_wired (NM_CONNECTION (exported));
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s_wifi = nm_connection_get_setting_wireless (NM_CONNECTION (exported));
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if (s_wired) {
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nm_log_info (LOGD_SETTINGS, "locking wired connection setting");
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g_object_set (s_wired, NM_SETTING_WIRED_MAC_ADDRESS, address, NULL);
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} else if (s_wifi) {
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nm_log_info (LOGD_SETTINGS, "locking wireless connection setting");
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g_object_set (s_wifi, NM_SETTING_WIRELESS_MAC_ADDRESS, address, NULL);
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}
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nm_settings_connection_update (NM_SETTINGS_CONNECTION (exported),
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NULL,
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NM_SETTINGS_CONNECTION_PERSIST_MODE_DISK,
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NM_SETTINGS_CONNECTION_COMMIT_REASON_NONE,
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"ifupdown-new",
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NULL);
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}
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static void
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udev_device_added (SettingsPluginIfupdown *self, struct udev_device *device)
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{
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SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
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const char *iface, *path;
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NMIfupdownConnection *exported;
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iface = udev_device_get_sysname (device);
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path = udev_device_get_syspath (device);
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if (!iface || !path)
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return;
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nm_log_info (LOGD_SETTINGS, "devices added (path: %s, iface: %s)", path, iface);
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/* if we have a configured connection for this particular iface
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* we want to either unmanage the device or lock it
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*/
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exported = g_hash_table_lookup (priv->connections, iface);
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if (!exported && !g_hash_table_lookup (priv->eni_ifaces, iface)) {
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nm_log_info (LOGD_SETTINGS, "device added (path: %s, iface: %s): no ifupdown configuration found.",
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path, iface);
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return;
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}
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g_hash_table_insert (priv->kernel_ifaces, g_strdup (iface), udev_device_ref (device));
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if (exported)
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bind_device_to_connection (self, device, exported);
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if (ALWAYS_UNMANAGE || priv->unmanage_well_known)
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g_signal_emit_by_name (G_OBJECT (self), NM_SETTINGS_PLUGIN_UNMANAGED_SPECS_CHANGED);
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}
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static void
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udev_device_removed (SettingsPluginIfupdown *self, struct udev_device *device)
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{
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SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
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const char *iface, *path;
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iface = udev_device_get_sysname (device);
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path = udev_device_get_syspath (device);
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if (!iface || !path)
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return;
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nm_log_info (LOGD_SETTINGS, "devices removed (path: %s, iface: %s)", path, iface);
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if (!g_hash_table_remove (priv->kernel_ifaces, iface))
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return;
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if (ALWAYS_UNMANAGE || priv->unmanage_well_known)
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g_signal_emit_by_name (G_OBJECT (self), NM_SETTINGS_PLUGIN_UNMANAGED_SPECS_CHANGED);
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}
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static void
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udev_device_changed (SettingsPluginIfupdown *self, struct udev_device *device)
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{
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SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
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const char *iface, *path;
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iface = udev_device_get_sysname (device);
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path = udev_device_get_syspath (device);
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if (!iface || !path)
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return;
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nm_log_info (LOGD_SETTINGS, "device changed (path: %s, iface: %s)", path, iface);
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if (!g_hash_table_lookup (priv->kernel_ifaces, iface))
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return;
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if (ALWAYS_UNMANAGE || priv->unmanage_well_known)
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g_signal_emit_by_name (G_OBJECT (self), NM_SETTINGS_PLUGIN_UNMANAGED_SPECS_CHANGED);
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}
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static void
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handle_uevent (NMUdevClient *client,
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struct udev_device *device,
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gpointer user_data)
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{
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SettingsPluginIfupdown *self = SETTINGS_PLUGIN_IFUPDOWN (user_data);
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const char *subsys;
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const char *action;
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action = udev_device_get_action (device);
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g_return_if_fail (action != NULL);
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/* A bit paranoid */
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subsys = udev_device_get_subsystem (device);
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g_return_if_fail (nm_streq0 (subsys, "net"));
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if (!strcmp (action, "add"))
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udev_device_added (self, device);
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else if (!strcmp (action, "remove"))
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udev_device_removed (self, device);
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else if (!strcmp (action, "change"))
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udev_device_changed (self, device);
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}
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/* Returns the plugins currently known list of connections. The returned
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* list is freed by the system settings service.
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*/
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static GSList*
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get_connections (NMSettingsPlugin *config)
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{
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SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE ((SettingsPluginIfupdown *) config);
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GSList *connections;
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nm_log_info (LOGD_SETTINGS, "(%d) ... get_connections.", GPOINTER_TO_UINT(config));
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if(priv->unmanage_well_known) {
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nm_log_info (LOGD_SETTINGS, "(%d) ... get_connections (managed=false): return empty list.", GPOINTER_TO_UINT(config));
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return NULL;
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}
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connections = _nm_utils_hash_values_to_slist (priv->connections);
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nm_log_info (LOGD_SETTINGS, "(%d) connections count: %d", GPOINTER_TO_UINT(config), g_slist_length(connections));
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return connections;
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}
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/*
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* Return a list of device specifications which NetworkManager should not
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* manage. Returned list will be freed by the system settings service, and
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* each element must be allocated using g_malloc() or its variants.
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*/
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static GSList*
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get_unmanaged_specs (NMSettingsPlugin *config)
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{
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SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE ((SettingsPluginIfupdown *) config);
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GSList *specs = NULL;
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GHashTableIter iter;
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struct udev_device *device;
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const char *iface;
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if (!ALWAYS_UNMANAGE && !priv->unmanage_well_known)
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return NULL;
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nm_log_info (LOGD_SETTINGS, "get unmanaged devices count: %d",
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g_hash_table_size (priv->kernel_ifaces));
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g_hash_table_iter_init (&iter, priv->kernel_ifaces);
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while (g_hash_table_iter_next (&iter, (gpointer) &iface, (gpointer) &device)) {
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const char *address;
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address = udev_device_get_sysattr_value (device, "address");
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if (address)
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specs = g_slist_append (specs, g_strdup_printf ("mac:%s", address));
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else
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specs = g_slist_append (specs, g_strdup_printf ("interface-name:%s", iface));
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}
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return specs;
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}
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/*****************************************************************************/
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static void
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get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec)
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{
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switch (prop_id) {
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case NM_SETTINGS_PLUGIN_PROP_NAME:
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g_value_set_string (value, IFUPDOWN_PLUGIN_NAME);
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break;
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case NM_SETTINGS_PLUGIN_PROP_INFO:
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g_value_set_string (value, IFUPDOWN_PLUGIN_INFO);
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break;
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case NM_SETTINGS_PLUGIN_PROP_CAPABILITIES:
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g_value_set_uint (value, NM_SETTINGS_PLUGIN_CAP_NONE);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/*****************************************************************************/
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static void
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_udev_device_unref (gpointer ptr)
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{
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udev_device_unref (ptr);
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}
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static void
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init (NMSettingsPlugin *config)
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{
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SettingsPluginIfupdown *self = SETTINGS_PLUGIN_IFUPDOWN (config);
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SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
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GHashTable *auto_ifaces;
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if_block *block = NULL;
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struct udev_enumerate *enumerate;
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struct udev_list_entry *keys;
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GHashTableIter con_iter;
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const char *block_name;
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NMIfupdownConnection *connection;
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auto_ifaces = g_hash_table_new (nm_str_hash, g_str_equal);
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if(!priv->connections)
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priv->connections = g_hash_table_new (nm_str_hash, g_str_equal);
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if(!priv->kernel_ifaces)
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priv->kernel_ifaces = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, _udev_device_unref);
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if(!priv->eni_ifaces)
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priv->eni_ifaces = g_hash_table_new (nm_str_hash, g_str_equal);
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nm_log_info (LOGD_SETTINGS, "init!");
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priv->udev_client = nm_udev_client_new ((const char *[]) { "net", NULL },
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handle_uevent, self);
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/* Read in all the interfaces */
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ifparser_init (ENI_INTERFACES_FILE, 0);
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block = ifparser_getfirst ();
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while (block) {
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if(!strcmp ("auto", block->type) || !strcmp ("allow-hotplug", block->type))
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g_hash_table_insert (auto_ifaces, block->name, GUINT_TO_POINTER (1));
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else if (!strcmp ("iface", block->type)) {
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NMIfupdownConnection *exported;
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/* Bridge configuration */
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if(!strncmp ("br", block->name, 2)) {
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/* Try to find bridge ports */
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const char *ports = ifparser_getkey (block, "bridge-ports");
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if (ports) {
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int i;
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int state = 0;
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char **port_ifaces;
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nm_log_info (LOGD_SETTINGS, "found bridge ports %s for %s", ports, block->name);
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port_ifaces = g_strsplit_set (ports, " \t", -1);
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for (i = 0; i < g_strv_length (port_ifaces); i++) {
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char *token = port_ifaces[i];
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/* Skip crazy stuff like regex or all */
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if (!strcmp ("all", token)) {
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continue;
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}
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/* Small SM to skip everything inside regex */
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if (!strcmp ("regex", token)) {
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state++;
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continue;
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}
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if (!strcmp ("noregex", token)) {
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state--;
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continue;
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}
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if (state == 0 && strlen (token) > 0) {
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nm_log_info (LOGD_SETTINGS, "adding bridge port %s to eni_ifaces", token);
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g_hash_table_insert (priv->eni_ifaces, g_strdup (token), "known");
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}
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}
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g_strfreev (port_ifaces);
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}
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goto next;
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}
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/* Skip loopback configuration */
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if(!strcmp ("lo", block->name)) {
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goto next;
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}
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/* Remove any connection for this block that was previously found */
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exported = g_hash_table_lookup (priv->connections, block->name);
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if (exported) {
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nm_log_info (LOGD_SETTINGS, "deleting %s from connections", block->name);
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nm_settings_connection_delete (NM_SETTINGS_CONNECTION (exported), NULL);
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g_hash_table_remove (priv->connections, block->name);
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}
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/* add the new connection */
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exported = nm_ifupdown_connection_new (block);
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if (exported) {
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nm_log_info (LOGD_SETTINGS, "adding %s to connections", block->name);
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g_hash_table_insert (priv->connections, block->name, exported);
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}
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nm_log_info (LOGD_SETTINGS, "adding iface %s to eni_ifaces", block->name);
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g_hash_table_insert (priv->eni_ifaces, block->name, "known");
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} else if (!strcmp ("mapping", block->type)) {
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g_hash_table_insert (priv->eni_ifaces, block->name, "known");
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nm_log_info (LOGD_SETTINGS, "adding mapping %s to eni_ifaces", block->name);
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}
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next:
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block = block->next;
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}
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/* Make 'auto' interfaces autoconnect=TRUE */
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g_hash_table_iter_init (&con_iter, priv->connections);
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while (g_hash_table_iter_next (&con_iter, (gpointer) &block_name, (gpointer) &connection)) {
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NMSettingConnection *setting;
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if (g_hash_table_lookup (auto_ifaces, block_name)) {
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setting = nm_connection_get_setting_connection (NM_CONNECTION (connection));
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g_object_set (setting, NM_SETTING_CONNECTION_AUTOCONNECT, TRUE, NULL);
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nm_log_info (LOGD_SETTINGS, "autoconnect");
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}
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}
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g_hash_table_destroy (auto_ifaces);
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/* Check the config file to find out whether to manage interfaces */
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priv->unmanage_well_known = !nm_config_data_get_value_boolean (NM_CONFIG_GET_DATA_ORIG,
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NM_CONFIG_KEYFILE_GROUP_IFUPDOWN,
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NM_CONFIG_KEYFILE_KEY_IFUPDOWN_MANAGED,
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!IFUPDOWN_UNMANAGE_WELL_KNOWN_DEFAULT);
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nm_log_info (LOGD_SETTINGS, "management mode: %s", priv->unmanage_well_known ? "unmanaged" : "managed");
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/* Add well-known interfaces */
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enumerate = nm_udev_client_enumerate_new (priv->udev_client);
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udev_enumerate_scan_devices (enumerate);
|
|
keys = udev_enumerate_get_list_entry (enumerate);
|
|
for (; keys; keys = udev_list_entry_get_next (keys)) {
|
|
struct udev_device *udevice;
|
|
|
|
udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerate),
|
|
udev_list_entry_get_name (keys));
|
|
if (udevice) {
|
|
udev_device_added (self, udevice);
|
|
udev_device_unref (udevice);
|
|
}
|
|
}
|
|
udev_enumerate_unref (enumerate);
|
|
|
|
/* 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->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_SETTINGS_PLUGIN_CONNECTION_ADDED,
|
|
NM_SETTINGS_CONNECTION (cl_iter->data));
|
|
}
|
|
g_list_free (con_list);
|
|
}
|
|
|
|
nm_log_info (LOGD_SETTINGS, "end _init.");
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void
|
|
settings_plugin_ifupdown_init (SettingsPluginIfupdown *plugin)
|
|
{
|
|
}
|
|
|
|
static void
|
|
dispose (GObject *object)
|
|
{
|
|
SettingsPluginIfupdown *plugin = SETTINGS_PLUGIN_IFUPDOWN (object);
|
|
SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (plugin);
|
|
|
|
g_clear_pointer (&priv->kernel_ifaces, g_hash_table_destroy);
|
|
g_clear_pointer (&priv->eni_ifaces, g_hash_table_destroy);
|
|
|
|
priv->udev_client = nm_udev_client_unref (priv->udev_client);
|
|
|
|
G_OBJECT_CLASS (settings_plugin_ifupdown_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
settings_plugin_ifupdown_class_init (SettingsPluginIfupdownClass *req_class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (req_class);
|
|
|
|
object_class->dispose = dispose;
|
|
object_class->get_property = get_property;
|
|
|
|
g_object_class_override_property (object_class,
|
|
NM_SETTINGS_PLUGIN_PROP_NAME,
|
|
NM_SETTINGS_PLUGIN_NAME);
|
|
|
|
g_object_class_override_property (object_class,
|
|
NM_SETTINGS_PLUGIN_PROP_INFO,
|
|
NM_SETTINGS_PLUGIN_INFO);
|
|
|
|
g_object_class_override_property (object_class,
|
|
NM_SETTINGS_PLUGIN_PROP_CAPABILITIES,
|
|
NM_SETTINGS_PLUGIN_CAPABILITIES);
|
|
}
|
|
|
|
static void
|
|
settings_plugin_interface_init (NMSettingsPluginInterface *plugin_iface)
|
|
{
|
|
plugin_iface->init = init;
|
|
plugin_iface->get_connections = get_connections;
|
|
plugin_iface->get_unmanaged_specs = get_unmanaged_specs;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
G_MODULE_EXPORT GObject *
|
|
nm_settings_plugin_factory (void)
|
|
{
|
|
return G_OBJECT (g_object_ref (settings_plugin_ifupdown_get ()));
|
|
}
|
|
|