check_write
static int check_write(const char *, int);
if (check_write($3, 1))
if (check_write($3, 1))
if (check_write($3, 1))
if (check_write($3, 0)) {
if (check_write($3, 0))
if (check_write($3, 0))
if (check_write($3, 0))
if (check_write($7, 0)) {
if ($4 && check_write("", 0)) {
if (check_write($3, 0)) {
goto check_write;
check_write: