Re: [Qemu-devel] [PATCH v4 06/10] qemu-ga: Add Windows VSS provider to quiesce applications on fsfreeze

[Gal Hammer]

On 26/06/2013 01:31, Tomoki Sekiyama wrote:

> > Also, is it needed to call VSSCheckOSVersion from the requestor?  I
> > would think that checking VSSAPI.DLL is stronger than checking the
> > version, and indeed you do that check too.
>
> In Windows XP, VSSAPI.DLL exists but it has different functionality
> and interfaces from newer Windows.
> http://msdn.microsoft.com/en-us/library/windows/desktop/aa384627(v=vs.85).aspx
>
> It is checking the OS version because this patchset only supports
> Windows 2003 or later.

So why don't you query for the interface you supports rather than 
checking the OS version?

Thanks,

    Gal.

> Thanks,
> Tomoki Sekiyama