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Re: [Xen-devel] [PATCH] QEMU "drive_init()" Disk Format Security Bypass

Markus Armbruster writes ("Re: [Xen-devel] [PATCH] QEMU "drive_init()" Disk 
Format Security Bypass"):
> Patch looks sane.  I backported it to F-8 and verified that:
> 1. usbdevice = "disk:IMG" opens the image IMG raw regardless of file
>    contents.  Same for monitor command usb_add disk:IMG.
> 2. usbdevice = "disk-qcow:IMG" opens the qcow image IMG correctly.
>    Same for monitor command usb_add disk-qcow:IMG.

Good, thanks.

> I believe monitor command change is still broken.  I tried "change fda
> IMG", with a qcow image IMG, and it was opened qcow.  But changing to
> a raw image failed; I think that feature was broken by by your
> security fix.

Yes, this is expected.  If this is a problem then we need a more
sophisticated solution.  NB that hopefully xen-unstable will acquire a
much more recent qemu shortly so there is no need to fix it right now
for xen-unstable unless it's a big problem which I think it probably
isn't given how long it's been like this now ...


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