From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1G2AnN-0000D3-Vl
	for qemu-devel@nongnu.org; Sun, 16 Jul 2006 13:52:46 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1G2An9-0008UF-69
	for qemu-devel@nongnu.org; Sun, 16 Jul 2006 13:52:45 -0400
Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1G2An9-0008U4-0R
	for qemu-devel@nongnu.org; Sun, 16 Jul 2006 13:52:31 -0400
Received: from [195.228.240.51] (helo=mta01.mail.t-online.hu)
	by monty-python.gnu.org with esmtp (Exim 4.52) id 1G2Apb-0004wO-KY
	for qemu-devel@nongnu.org; Sun, 16 Jul 2006 13:55:04 -0400
Received: from mail.chello.hu (dsl51B66635.pool.t-online.hu [81.182.102.53])
	by mail.t-online.hu (Postfix) with ESMTP
	for <qemu-devel@nongnu.org>; Sun, 16 Jul 2006 19:51:42 +0200 (CEST)
Date: Sun, 16 Jul 2006 19:51:41 +0200
Subject: Re: [Qemu-devel] Monitor
From: NyOS <lista@nyos.homelinux.net>
Content-Type: text/plain; format=flowed; delsp=yes; charset=iso-8859-2
MIME-Version: 1.0
References: <3461d5200607151451s384bf990oefd2c04c1453efb1@mail.gmail.com>
Content-Transfer-Encoding: Quoted-Printable
Message-ID: <op.tcsmkfj2t9pcbo@mail.chello.hu>
In-Reply-To: <3461d5200607151451s384bf990oefd2c04c1453efb1@mail.gmail.com>
Reply-To: qemu-devel@nongnu.org
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org

On Sat, 15 Jul 2006 23:51:39 +0200, Michael Fisher <desnotes@gmail.com> =
 =

wrote:

> 1. Can the commands (i.e. sendkeys, savevm, loadvm) be initiated from
> within the guest OS? If so, can you give me an example?
Of course, by its nature, not. A good emulator cannot allow that.
However, - if you configure your system well - it is possibile with  =

external programs:
Launch qemu with network support, use a named pipe as monitor, and do  =

something on the host to grant guest some access (launch sshd for instan=
ce  =

and install ssh client on guest)
mknod monitor.pipe p <-- this line creates a new named pipe, called  =

"monitor.pipe"
qemu -hda disc.img -monitor pipe:monitor.pipe -net nic -net user <-- use=
  =

monitor.pipe as monitor.. note that you cannot reach original monitor  =

(alt-ctr-2) this way

connect to host from inside, and use "echo 'command' > monitor.pipe"

It sounds quite useless.. but it isn't if you use a GNU netcat (nc) serv=
er  =

on host, which listens on a tcp/ip port.. That way, a simple telnet  =

program could be used as a terminal from inside (I mean from guest)

nc -T -l -t -p 8898 >monitor.pipe

(There might be some patches around that make possibile to use a tcp/ip =
 =

server as a monitor/serial/parallel device..)

>
> 2. When executing 'savevm' can it be saved to a virtual disk?
By default, not.
With the same trick, you can ask the host to make some VM saves, and the=
n  =

fetch it through scp/ftp/samba/whatever you want

>
> Thanks,
>
> desNotes
>

Best regards,

Nyos