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settings: cleanup loading settings plugins

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Drop the unnecessary @list argument and various cleanups.
This commit is contained in:
Thomas Haller 2018-09-05 09:19:39 +02:00
parent dd5244af3e
commit 0ea810fa96
2 changed files with 46 additions and 66 deletions
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2
src/settings/nm-settings-plugin.h
View file

@ -100,6 +100,8 @@ typedef struct {
GType nm_settings_plugin_get_type (void);
typedef NMSettingsPlugin *(*NMSettingsPluginFactoryFunc) (void);
/* Plugin's factory function that returns a #NMSettingsPlugin */
NMSettingsPlugin *nm_settings_plugin_factory (void);

110
src/settings/nm-settings.c
View file

@ -586,67 +586,49 @@ unrecognized_specs_changed (NMSettingsPlugin *config,
nm_settings_plugin_get_unrecognized_specs);
}
static gboolean
add_plugin (NMSettings *self, NMSettingsPlugin *plugin)
static void
add_plugin (NMSettings *self, NMSettingsPlugin *plugin, const char *path)
{
NMSettingsPrivate *priv;
const char *path;
g_return_val_if_fail (NM_IS_SETTINGS (self), FALSE);
g_return_val_if_fail (NM_IS_SETTINGS_PLUGIN (plugin), FALSE);
nm_assert (NM_IS_SETTINGS (self));
nm_assert (NM_IS_SETTINGS_PLUGIN (plugin));
priv = NM_SETTINGS_GET_PRIVATE (self);
if (g_slist_find (priv->plugins, plugin)) {
/* don't add duplicates. */
return FALSE;
}
nm_assert (!g_slist_find (priv->plugins, plugin));
priv->plugins = g_slist_append (priv->plugins, g_object_ref (plugin));
nm_settings_plugin_initialize (plugin);
path = g_object_get_qdata (G_OBJECT (plugin), plugin_module_path_quark ());
_LOGI ("Loaded settings plugin: %s (%s)", G_OBJECT_TYPE_NAME (plugin), path ?: "internal");
return TRUE;
_LOGI ("Loaded settings plugin: %s (%s%s%s)",
G_OBJECT_TYPE_NAME (plugin),
NM_PRINT_FMT_QUOTED (path, "\"", path, "\"", "internal"));
}
static gboolean
plugin_loaded (GSList *list, const char *path)
{
GSList *iter;
g_return_val_if_fail (path != NULL, TRUE);
for (iter = list; iter; iter = g_slist_next (iter)) {
const char *list_path = g_object_get_qdata (G_OBJECT (iter->data),
plugin_module_path_quark ());
if (g_strcmp0 (path, list_path) == 0)
return TRUE;
}
return FALSE;
}
static gboolean
load_plugin (NMSettings *self, GSList **list, const char *pname, GError **error)
add_plugin_load_file (NMSettings *self, const char *pname, GError **error)
{
NMSettingsPrivate *priv = NM_SETTINGS_GET_PRIVATE (self);
gs_free char *full_name = NULL;
gs_free char *path = NULL;
gs_unref_object GObject *obj = NULL;
GModule *plugin;
GObject * (*factory_func) (void);
gs_unref_object NMSettingsPlugin *plugin = NULL;
GModule *module;
NMSettingsPluginFactoryFunc factory_func;
GSList *iter;
struct stat st;
int errsv;
full_name = g_strdup_printf ("nm-settings-plugin-%s", pname);
path = g_module_build_path (NMPLUGINDIR, full_name);
if (plugin_loaded (*list, path))
return TRUE;
for (iter = priv->plugins; iter; iter = iter->next) {
if (nm_streq0 (path,
g_object_get_qdata (iter->data,
plugin_module_path_quark ())))
return TRUE;
}
if (stat (path, &st) != 0) {
errsv = errno;
@ -666,8 +648,8 @@ load_plugin (NMSettings *self, GSList **list, const char *pname, GError **error)
return TRUE;
}
plugin = g_module_open (path, G_MODULE_BIND_LOCAL);
if (!plugin) {
module = g_module_open (path, G_MODULE_BIND_LOCAL);
if (!module) {
_LOGW ("could not load plugin '%s' from file '%s': %s",
pname, path, g_module_error ());
return TRUE;
@ -675,48 +657,46 @@ load_plugin (NMSettings *self, GSList **list, const char *pname, GError **error)
/* errors after this point are fatal, because we loaded the shared library already. */
if (!g_module_symbol (plugin, "nm_settings_plugin_factory", (gpointer) (&factory_func))) {
if (!g_module_symbol (module, "nm_settings_plugin_factory", (gpointer) (&factory_func))) {
g_set_error (error, NM_SETTINGS_ERROR, NM_SETTINGS_ERROR_FAILED,
"Could not find plugin '%s' factory function.",
pname);
g_module_close (plugin);
g_module_close (module);
return FALSE;
}
/* after accessing the plugin we cannot unload it anymore, because the glib
* types cannot be properly unregistered. */
g_module_make_resident (plugin);
g_module_make_resident (module);
obj = (*factory_func) ();
if (!obj || !NM_IS_SETTINGS_PLUGIN (obj)) {
plugin = (*factory_func) ();
if (!NM_IS_SETTINGS_PLUGIN (plugin)) {
g_set_error (error, NM_SETTINGS_ERROR, NM_SETTINGS_ERROR_FAILED,
"Plugin '%s' returned invalid system config object.",
"plugin '%s' returned invalid settings plugin",
pname);
return FALSE;
}
g_object_set_qdata_full (obj, plugin_module_path_quark (), path, g_free);
path = NULL;
if (add_plugin (self, NM_SETTINGS_PLUGIN (obj)))
*list = g_slist_append (*list, g_steal_pointer (&obj));
add_plugin (self, NM_SETTINGS_PLUGIN (plugin), path);
g_object_set_qdata_full (G_OBJECT (plugin),
plugin_module_path_quark (),
g_steal_pointer (&path),
g_free);
return TRUE;
}
static void
add_keyfile_plugin (NMSettings *self)
add_plugin_keyfile (NMSettings *self)
{
gs_unref_object NMSKeyfilePlugin *keyfile_plugin = NULL;
keyfile_plugin = nms_keyfile_plugin_new ();
if (!add_plugin (self, NM_SETTINGS_PLUGIN (keyfile_plugin)))
g_return_if_reached ();
add_plugin (self, NM_SETTINGS_PLUGIN (keyfile_plugin), NULL);
}
static gboolean
load_plugins (NMSettings *self, const char **plugins, GError **error)
{
GSList *list = NULL;
const char **iter;
gboolean keyfile_added = FALSE;
gboolean success = TRUE;
@ -744,15 +724,15 @@ load_plugins (NMSettings *self, const char **plugins, GError **error)
continue;
}
if (!strcmp (pname, "no-ibft"))
if (nm_streq (pname, "no-ibft"))
continue;
if (has_no_ibft && !strcmp (pname, "ibft"))
if (has_no_ibft && nm_streq (pname, "ibft"))
continue;
/* keyfile plugin is built-in now */
if (strcmp (pname, "keyfile") == 0) {
if (nm_streq (pname, "keyfile")) {
if (!keyfile_added) {
add_keyfile_plugin (self);
add_plugin_keyfile (self);
keyfile_added = TRUE;
}
continue;
@ -766,27 +746,25 @@ load_plugins (NMSettings *self, const char **plugins, GError **error)
continue;
}
success = load_plugin (self, &list, pname, error);
success = add_plugin_load_file (self, pname, error);
if (!success)
break;
if (add_ibft && !strcmp (pname, "ifcfg-rh")) {
if (add_ibft && nm_streq (pname, "ifcfg-rh")) {
/* The plugin ibft is not explicitly mentioned but we just enabled "ifcfg-rh".
* Enable "ibft" by default after "ifcfg-rh". */
pname = "ibft";
add_ibft = FALSE;
success = load_plugin (self, &list, "ibft", error);
success = add_plugin_load_file (self, "ibft", error);
if (!success)
break;
}
}
/* If keyfile plugin was not among configured plugins, add it as the last one */
if (!keyfile_added)
add_keyfile_plugin (self);
g_slist_free_full (list, g_object_unref);
if (!keyfile_added && success)
add_plugin_keyfile (self);
return success;
}