int uname(struct utsname *name); http://pubs.opengroup.org/onlinepubs/009695399/functions/uname.html
function copyString(element, value) {
        var offset = ___utsname_struct_layout[element];
        for (var i = 0; i < value.length; i++) {
          HEAP8[(((name)+(offset + i))|0)]=value.charCodeAt(i)
        }
        HEAP8[(((name)+(offset + i))|0)]=0
      }