FD_FILESTAT_SET_SIZE

;;; Adjust the size of an open file. If this increases the file's size, the extra bytes are filled with zeros.
  ;;; Note: This is similar to `ftruncate` in POSIX.
  (@interface func (export "fd_filestat_set_size")
    (param $fd $fd)
    ;;; The desired file size.
    (param $size $filesize)
    (result $error (expected (error $errno)))
  )