pub fn is_file_read_write<Fd: AsFd>(fd: Fd) -> Result<(bool, bool)>Expand description
fcntl(fd, F_GETFL) & O_ACCMODE
Returns a pair of booleans indicating whether the file descriptor is
readable and/or writable, respectively. This is only reliable on files; for
example, it doesn’t reflect whether sockets have been shut down; for
general I/O handle support, use io::is_read_write.