-smx_action_t SIMIX_file_unlink(smx_process_t process, smx_file_t fd);
-smx_action_t SIMIX_file_ls(smx_process_t process, const char *mount, const char *path);
-smx_action_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd);
+int SIMIX_file_unlink(smx_process_t process, smx_file_t fd);
+smx_action_t SIMIX_file_ls(smx_process_t process, const char *mount,
+ const char *path);
+size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd);
+xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd);
+
+size_t SIMIX_pre_storage_get_free_size(smx_simcall_t simcall,const char* name);
+size_t SIMIX_storage_get_free_size(smx_process_t process,const char* name);
+
+size_t SIMIX_pre_storage_get_used_size(smx_simcall_t simcall,const char* name);
+size_t SIMIX_storage_get_used_size(smx_process_t process,const char* name);