Re: [Qemu-devel] Windows Pipe

[Jiahuan Zhang]

Hi,

I agree with you about win_chr_poll(). But what I wonder is how to write
data into the pipe for the host to get. I see "writeFile()" in
"win_chr_write()", but have no idea how to use it. Or I have to write
something for this writing. In this case, I don't know what the right
buffer pointer for WriteFile() is.

Any clue is greatly appreciated!

On 1 March 2017 at 15:25, Marc-André Lureau <address@hidden>
wrote:

> Hi
>
> On Wed, Mar 1, 2017 at 5:16 PM Jiahuan Zhang <address@hidden>
> wrote:
>
>> Dear QEMU developers,
>>
>> I want the host-guest communication for QEMU. I want to achieve
>> it via serial port redirection to a pipe. My host is windows and guest is
>> Linux. QEMU is in version 2.8.50
>>
>> I looked into char-pipe.c and char-win.c, and find that the current QEMU
>> only supports reading data on the pipe from host to guest for Windows.
>> See *win_chr_pipe_init
>> () *in char-pipe.c
>>
>> Is it true?
>>
>
> Not exactly, for some reason, the win-chr-pipe uses a poll, win_chr_poll()
> that read from the pipe and write to the frontend (the vm serial).  I
> haven't tested the windows pipe implementation, only the console one, but
> it looks like it should work. Hopefully someone using qemu on windows can
> help you.
>
>
>> I don't know how to use *win_chr_write() *in char-win.c.
>> Can you please present an example?
>>
>> best regards,
>> Jiahuan
>>
> --
> Marc-André Lureau
>