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https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
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dns: allow loading nm-dns-systemd-resolve alongside other DNS plugins
Even when the system resolver is configured to something else that systemd-resolved, it still is a good idea to keep systemd-resolved up to date. If not anything else, it does a good job at doing per-interface resolving for connectivity checks. If for whatever reasons don't want NetworkManager to push the DNS data it discovers to systemd-resolved, the functionality can be disabled with: [main] systemd-resolved=false
This commit is contained in:
Lubomir Rintel
parent
ecde3e9034
commit
d4eb4cb45f
4 changed files with 63 additions and 7 deletions
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@ -387,6 +387,20 @@ no-auto-default=*
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>systemd-resolved</varname></term>
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<listitem><para>Send the connection DNS configuration to
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<literal>systemd-resolved</literal>. Defaults to "<literal>true</literal>".
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</para>
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<para>Note that this setting is complementary to the
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<varname>dns</varname> setting. You can keep this enable while using
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<varname>dns</varname> set to another DNS plugin alongside
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<literal>systemd-resolved</literal>, or <varname>dns</varname> set to
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<literal>systemd-resolved</literal> to configure the system resolver to use
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<literal>systemd-resolved</literal>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>debug</varname></term>
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<listitem><para>Comma separated list of options to aid
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@ -122,6 +122,7 @@ typedef struct {
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NMDnsManagerResolvConfManager rc_manager;
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char *mode;
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NMDnsPlugin *sd_resolve_plugin;
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NMDnsPlugin *plugin;
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NMConfig *config;
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@ -1398,6 +1399,16 @@ update_dns (NMDnsManager *self,
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&searches, &options, &nameservers,
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&nis_servers, &nis_domain);
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if (priv->plugin || priv->sd_resolve_plugin)
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rebuild_domain_lists (self);
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if (priv->sd_resolve_plugin) {
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nm_dns_plugin_update (priv->sd_resolve_plugin,
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global_config,
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_ip_config_lst_head (self),
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priv->hostname);
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}
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/* Let any plugins do their thing first */
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if (priv->plugin) {
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NMDnsPlugin *plugin = priv->plugin;
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@ -1413,7 +1424,6 @@ update_dns (NMDnsManager *self,
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}
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_LOGD ("update-dns: updating plugin %s", plugin_name);
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rebuild_domain_lists (self);
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if (!nm_dns_plugin_update (plugin,
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global_config,
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_ip_config_lst_head (self),
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@ -1425,15 +1435,17 @@ update_dns (NMDnsManager *self,
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*/
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caching = FALSE;
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}
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/* Clear the generated search list as it points to
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* strings owned by IP configurations and we can't
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* guarantee they stay alive. */
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clear_domain_lists (self);
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skip:
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;
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}
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/* Clear the generated search list as it points to
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* strings owned by IP configurations and we can't
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* guarantee they stay alive. */
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clear_domain_lists (self);
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clear_domain_lists (self);
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update_resolv_conf_no_stub (self, searches, nameservers, options);
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/* If caching was successful, we only send 127.0.0.1 to /etc/resolv.conf
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@ -1932,9 +1944,11 @@ init_resolv_conf_mode (NMDnsManager *self, gboolean force_reload_plugin)
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NMDnsManagerPrivate *priv = NM_DNS_MANAGER_GET_PRIVATE (self);
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NMDnsManagerResolvConfManager rc_manager;
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const char *mode;
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gboolean systemd_resolved = FALSE;
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gboolean param_changed = FALSE, plugin_changed = FALSE;
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mode = nm_config_data_get_dns_mode (nm_config_get_data (priv->config));
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systemd_resolved = nm_config_data_get_systemd_resolved (nm_config_get_data (priv->config));
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if (nm_streq0 (mode, "none"))
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rc_manager = NM_DNS_MANAGER_RESOLV_CONF_MAN_UNMANAGED;
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@ -1980,6 +1994,7 @@ again:
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plugin_changed = TRUE;
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}
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mode = "systemd-resolved";
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systemd_resolved = FALSE;
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} else if (nm_streq0 (mode, "dnsmasq")) {
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if (force_reload_plugin || !NM_IS_DNS_DNSMASQ (priv->plugin)) {
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_clear_plugin (self);
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@ -2002,6 +2017,20 @@ again:
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plugin_changed = TRUE;
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}
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/* The systemd-resolved plugin is special. We typically always want to keep
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* systemd-resolved up to date even if the configured plugin is different. */
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if (systemd_resolved) {
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if (!priv->sd_resolve_plugin) {
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priv->sd_resolve_plugin = nm_dns_systemd_resolved_new ();
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plugin_changed = TRUE;
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}
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} else {
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if (priv->sd_resolve_plugin) {
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g_clear_object (&priv->sd_resolve_plugin);
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plugin_changed = TRUE;
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}
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}
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if (plugin_changed && priv->plugin) {
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g_signal_connect (priv->plugin, NM_DNS_PLUGIN_FAILED, G_CALLBACK (plugin_failed), self);
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g_signal_connect (priv->plugin, NM_DNS_PLUGIN_CHILD_QUIT, G_CALLBACK (plugin_child_quit), self);
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@ -2023,8 +2052,9 @@ again:
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}
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if (param_changed || plugin_changed) {
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_LOGI ("init: dns=%s, rc-manager=%s%s%s%s",
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mode, _rc_manager_to_string (rc_manager),
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_LOGI ("init: dns=%s%s rc-manager=%s%s%s%s",
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mode, (systemd_resolved ? ",systemd-resolved" : ""),
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_rc_manager_to_string (rc_manager),
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NM_PRINT_FMT_QUOTED (priv->plugin, ", plugin=",
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nm_dns_plugin_get_name (priv->plugin), "", ""));
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}
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@ -2285,6 +2315,7 @@ dispose (GObject *object)
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if (priv->config)
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g_signal_handlers_disconnect_by_func (priv->config, config_changed_cb, self);
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g_clear_object (&priv->sd_resolve_plugin);
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_clear_plugin (self);
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priv->best_ip_config_4 = NULL;
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@ -108,6 +108,7 @@ typedef struct {
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char *dns_mode;
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char *rc_manager;
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gboolean systemd_resolved;
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NMGlobalDnsConfig *global_dns;
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} NMConfigDataPrivate;
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@ -322,6 +323,14 @@ nm_config_data_get_rc_manager (const NMConfigData *self)
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return NM_CONFIG_DATA_GET_PRIVATE (self)->rc_manager;
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}
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gboolean
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nm_config_data_get_systemd_resolved (const NMConfigData *self)
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{
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g_return_val_if_fail (self, FALSE);
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return NM_CONFIG_DATA_GET_PRIVATE (self)->systemd_resolved;
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}
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gboolean
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nm_config_data_get_ignore_carrier (const NMConfigData *self, NMDevice *device)
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{
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@ -1654,6 +1663,7 @@ constructed (GObject *object)
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priv->dns_mode = nm_strstrip (g_key_file_get_string (priv->keyfile, NM_CONFIG_KEYFILE_GROUP_MAIN, "dns", NULL));
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priv->rc_manager = nm_strstrip (g_key_file_get_string (priv->keyfile, NM_CONFIG_KEYFILE_GROUP_MAIN, "rc-manager", NULL));
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priv->systemd_resolved = nm_config_keyfile_get_boolean (priv->keyfile, NM_CONFIG_KEYFILE_GROUP_MAIN, "systemd-resolved", TRUE);
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priv->ignore_carrier = nm_config_get_match_spec (priv->keyfile, NM_CONFIG_KEYFILE_GROUP_MAIN, "ignore-carrier", NULL);
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priv->assume_ipv6ll_only = nm_config_get_match_spec (priv->keyfile, NM_CONFIG_KEYFILE_GROUP_MAIN, "assume-ipv6ll-only", NULL);
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@ -170,6 +170,7 @@ gboolean nm_config_data_get_no_auto_default_for_device (const NMConfigD
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const char *nm_config_data_get_dns_mode (const NMConfigData *self);
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const char *nm_config_data_get_rc_manager (const NMConfigData *self);
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gboolean nm_config_data_get_systemd_resolved (const NMConfigData *self);
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gboolean nm_config_data_get_ignore_carrier (const NMConfigData *self, NMDevice *device);
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gboolean nm_config_data_get_assume_ipv6ll_only (const NMConfigData *self, NMDevice *device);
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