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Date: Wed, 14 Oct 2009 18:32:49 +0200
From: Naphtali Sprei <nsprei@redhat.com>
MIME-Version: 1.0
Subject: Re: [Qemu-devel] [PATCH] Pass the drive's readonly attribute to the
	guest OS
References: <4AD5F3BD.2040402@redhat.com>
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To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel@nongnu.org

Gerd Hoffmann wrote:
> On 10/14/09 17:59, Naphtali Sprei wrote:
>> Gerd Hoffmann wrote:
>>> On 10/14/09 17:52, Naphtali Sprei wrote:
>>>> Hi,
>>>> as a preliminary step for adding read only flag for the -drive
>>>> command, I've added code to pass
>>>> the (existing) read only attribute of the drive to the guest OS (if it
>>>> bother to ask).
>>>>
>>>> I've added for virtio and for scsi.
>>>
>>>> Where is usb ??
>>>
>>> hw/usb-msd.c
>>
>> Thanks,
>> what I meant is I can't find how can it be specified as a drive
>> interface.
> 
> You can use either
> 
>   -usbdevice disk:/some/image
>   (usb_add in monitor)
> 
> or
> 
>   -drive if=none,id=pendrive,file=/some/image
>   -device usb-storage,drive=pendrive
>   (drive_add + device_add in monitor)
> 
> cheers,
>   Gerd
> 
> 
> 

Thanks.
Verified, it "works", meaning readonly attribute passed to guest.