un test_dir manquant

ecrire/exec/export_all.php

@@ -77,6 +77,11 @@ function exec_export_all_dist()
 		$dir = _DIR_DUMP;
 	else $dir = determine_upload();
 
+	if (!is_writable($dir)) {
+		include_spip('inc/headers');
+		$dir = preg_replace(",^" . _DIR_RACINE .",", '', $dir);
+		redirige_par_entete(generer_url_action("test_dirs", "test_dir=$dir", true));
+	}
 	if (!$archive)
 		$archive = export_nom_fichier_dump($dir,$gz);