Re: [Qemu-devel] [PATCH] Pass the drive's readonly attribute to the guest OS

[Gerd Hoffmann]

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