Re: [Xen-devel][PATCH]ioemu:fix up error when using qemu-img-xen to create img

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Daniel P. Berrange writes ("Re: [Xen-devel][PATCH]ioemu:fix up error when using 
qemu-img-xen to create img"):
> On Tue, May 05, 2009 at 03:17:34PM +0100, Ian Jackson wrote:
> > Upstream qemu have fixed this problem in a half-hearted way and
> > evidently their qemu-img is still vulnerable.  We have changed the
> > format-determination code in block.c so that any attempt to autodetect
> > a format never returns `raw'; that means that any vulnerable code
> > anywhere is instantly fixed although it may break some existing usages
> > in cases where we haven't properly plumbed through a specification of
> > the image format.
> 
> Wasn't the upstream change to add a '-F baseimage_format' enough to
> allow the flaw to be avoided when creating new images ? Or are you
> attempting to prevent the issue, even when -F is not used ?

Yes, upstream have introduced -F but only in the main branch, and not
the stable branch we're basing Xen 3.4 on.  So yes, this problem will
go away when I pull after the Xen 3.4 release.

Ian.

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