Hi,
>> ... are you passing a file descriptor for a pipe, a file or a
>> parallel/serial port?
>
> The open function of the file-based backends basically do (1) create
> file handles and (2) call qemu_chr_open_fd(). So of you already have an
> fd the differences are gone. Well, almost. tty has an special ioctl
> callback to configure line speed.
Also you might want to pass in a socket fd ...
So I really think a -chardev
fd,type={listening-stream-socket,connected-stream-socket,datagram-socket,tty,fd-readwrite,fd-writeonly}
(+ QMP for that) will be more useful.
cheers,
Gerd
