ifcfg-rh: split connection_from_file() / connection_from_file_test()

Rather than having the "real" users of connection_from_file() have to
pass a dozen NULL arguments, add a separate
connection_from_file_test() for use by test-ifcfg-rh. (Likewise, since
no test cases care about ignore_error, remove that argument from
connection_from_file_test().)

src/settings/plugins/ifcfg-rh/nm-ifcfg-connection.c

@@ -117,18 +117,10 @@ nm_ifcfg_connection_new (NMConnection *source,
 	if (source)
 		tmp = g_object_ref (source);
 	else {
-		char *keyfile = NULL, *routefile = NULL, *route6file = NULL;
-
-		tmp = connection_from_file (full_path, NULL, NULL,
+		tmp = connection_from_file (full_path,
 		                            &unhandled_spec,
-		                            &keyfile,
-		                            &routefile,
-		                            &route6file,
 		                            error,
 		                            ignore_error);
-		g_free (keyfile);
-		g_free (routefile);
-		g_free (route6file);
 		if (!tmp)
 			return NULL;
 
@@ -267,10 +259,7 @@ commit_changes (NMSettingsConnection *connection,
 	 * it if it's really changed.
 	 */
 	if (priv->path) {
-		reread = connection_from_file (priv->path, NULL, NULL,
-		                               NULL, NULL, NULL, NULL,
-		                               &error, NULL);
-		g_clear_error (&error);
+		reread = connection_from_file (priv->path, NULL, NULL, NULL);
 		if (reread) {
 			same = nm_connection_compare (NM_CONNECTION (connection),
 			                              reread,

src/settings/plugins/ifcfg-rh/reader.c

@@ -4624,8 +4624,8 @@ check_dns_search_domains (shvarFile *ifcfg, NMSetting *s_ip4, NMSetting *s_ip6)
 	}
 }
 
-NMConnection *
-connection_from_file (const char *filename,
+static NMConnection *
+connection_from_file_full (const char *filename,
                            const char *network_file,  /* for unit tests only */
                            const char *test_type,     /* for unit tests only */
                            char **out_unhandled,
@@ -4839,3 +4839,37 @@ done:
 	return connection;
 }
 
+NMConnection *
+connection_from_file (const char *filename,
+                      char **out_unhandled,
+                      GError **error,
+                      gboolean *out_ignore_error)
+{
+	return connection_from_file_full (filename, NULL, NULL,
+	                                  out_unhandled,
+	                                  NULL, NULL, NULL,
+	                                  error,
+	                                  out_ignore_error);
+}
+
+NMConnection *
+connection_from_file_test (const char *filename,
+                           const char *network_file,
+                           const char *test_type,
+                           char **out_unhandled,
+                           char **out_keyfile,
+                           char **out_routefile,
+                           char **out_route6file,
+                           GError **error)
+{
+	return connection_from_file_full (filename,
+	                                  network_file,
+	                                  test_type,
+	                                  out_unhandled,
+	                                  out_keyfile,
+	                                  out_routefile,
+	                                  out_route6file,
+	                                  error,
+	                                  NULL);
+}
+

src/settings/plugins/ifcfg-rh/reader.h

@@ -27,15 +27,20 @@
 #include "shvar.h"
 
 NMConnection *connection_from_file (const char *filename,
-                                    const char *network_file,  /* for unit tests only */
-                                    const char *test_type,     /* for unit tests only */
                                     char **out_unhandled,
-                                    char **out_keyfile,
-                                    char **out_routefile,
-                                    char **out_route6file,
                                     GError **error,
                                     gboolean *out_ignore_error);
 
 char *uuid_from_file (const char *filename);
 
+/* for test-ifcfg-rh */
+NMConnection *connection_from_file_test (const char *filename,
+                                         const char *network_file,
+                                         const char *test_type,
+                                         char **out_unhandled,
+                                         char **out_keyfile,
+                                         char **out_routefile,
+                                         char **out_route6file,
+                                         GError **error);
+
 #endif  /* __READER_H__ */