tcgetattr

pub fn tcgetattr(handle: fd_t) TermiosGetError!termios {
    while (true) {
        var term: termios = undefined;
        switch (errno(system.tcgetattr(handle, &term))) {
            .SUCCESS => return term,
            .INTR => continue,
            .BADF => unreachable,
            .NOTTY => return error.NotATerminal,
            else => |err| return unexpectedErrno(err),
        }
    }
}