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