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settings/ifupdown: cleanup lifetime and memory handling of dictionaries in plugin

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- initialize the hash tables in the plugins constructor, not during
  initialize().

- let all dictionaries own a copy/reference of the keys and values, and
  properly free them when the values are removed. In general, avoid
  leaks by properly managing lifetimes.

- in @eni_ifaces, don't add a pointless dummy value "known". It has
  overhead for no benefit.
This commit is contained in:
Thomas Haller
2018-08-25 10:00:48 +02:00
parent 0ea810fa96
commit 42c2055a31
1 changed files with 13 additions and 15 deletions
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28
src/settings/plugins/ifupdown/nms-ifupdown-plugin.c
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@@ -158,7 +158,8 @@ udev_device_added (SettingsPluginIfupdown *self, struct udev_device *device)
* we want to either unmanage the device or lock it
*/
exported = g_hash_table_lookup (priv->connections, iface);
if (!exported && !g_hash_table_lookup (priv->eni_ifaces, iface)) {
if ( !exported
&& !g_hash_table_contains (priv->eni_ifaces, iface)) {
nm_log_info (LOGD_SETTINGS, "device added (path: %s, iface: %s): no ifupdown configuration found.",
path, iface);
return;
@@ -316,15 +317,6 @@ initialize (NMSettingsPlugin *config)
auto_ifaces = g_hash_table_new (nm_str_hash, g_str_equal);
if(!priv->connections)
priv->connections = g_hash_table_new (nm_str_hash, g_str_equal);
if(!priv->kernel_ifaces)
priv->kernel_ifaces = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, _udev_device_unref);
if(!priv->eni_ifaces)
priv->eni_ifaces = g_hash_table_new (nm_str_hash, g_str_equal);
nm_log_info (LOGD_SETTINGS, "init!");
priv->udev_client = nm_udev_client_new ((const char *[]) { "net", NULL },
@@ -371,7 +363,7 @@ initialize (NMSettingsPlugin *config)
}
if (state == 0 && strlen (token) > 0) {
nm_log_info (LOGD_SETTINGS, "adding bridge port %s to eni_ifaces", token);
g_hash_table_insert (priv->eni_ifaces, g_strdup (token), "known");
g_hash_table_add (priv->eni_ifaces, g_strdup (token));
}
}
g_strfreev (port_ifaces);
@@ -396,12 +388,12 @@ initialize (NMSettingsPlugin *config)
exported = nm_ifupdown_connection_new (block);
if (exported) {
nm_log_info (LOGD_SETTINGS, "adding %s to connections", block->name);
g_hash_table_insert (priv->connections, block->name, exported);
g_hash_table_insert (priv->connections, g_strdup (block->name), exported);
}
nm_log_info (LOGD_SETTINGS, "adding iface %s to eni_ifaces", block->name);
g_hash_table_insert (priv->eni_ifaces, block->name, "known");
g_hash_table_add (priv->eni_ifaces, g_strdup (block->name));
} else if (!strcmp ("mapping", block->type)) {
g_hash_table_insert (priv->eni_ifaces, block->name, "known");
g_hash_table_add (priv->eni_ifaces, g_strdup (block->name));
nm_log_info (LOGD_SETTINGS, "adding mapping %s to eni_ifaces", block->name);
}
next:
@@ -463,8 +455,13 @@ initialize (NMSettingsPlugin *config)
/*****************************************************************************/
static void
settings_plugin_ifupdown_init (SettingsPluginIfupdown *plugin)
settings_plugin_ifupdown_init (SettingsPluginIfupdown *self)
{
SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (self);
priv->connections = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, g_object_unref);
priv->kernel_ifaces = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, _udev_device_unref);
priv->eni_ifaces = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, NULL);
}
static void
@@ -473,6 +470,7 @@ dispose (GObject *object)
SettingsPluginIfupdown *plugin = SETTINGS_PLUGIN_IFUPDOWN (object);
SettingsPluginIfupdownPrivate *priv = SETTINGS_PLUGIN_IFUPDOWN_GET_PRIVATE (plugin);
g_clear_pointer (&priv->connections, g_hash_table_destroy);
g_clear_pointer (&priv->kernel_ifaces, g_hash_table_destroy);
g_clear_pointer (&priv->eni_ifaces, g_hash_table_destroy);