Re: [Qemu-devel] [RFC PATCH 04/10] qemu-ga: Add Windows VSS provider to quiesce applications on fsfreeze

[Paolo Bonzini]

Il 25/03/2013 21:50, Tomoki Sekiyama ha scritto:
> Hi,
> 
> Paolo Bonzini <address@hidden> wrote:
>> Il 14/02/2013 07:10, Tomoki Sekiyama ha scritto:
>>> diff --git a/qga/vss-win32-provider/qga-provider.idl
>> b/qga/vss-win32-provider/qga-provider.idl
>>> new file mode 100644
>>> index 0000000..17abca0
>>> --- /dev/null
>>> +++ b/qga/vss-win32-provider/qga-provider.idl
>>> @@ -0,0 +1,20 @@
>>> +import "oaidl.idl";
>>> +import "ocidl.idl";
>>> +
>>> +[
>>> +    uuid(103B8142-6CE5-48A7-BDE1-794D3192FCF1),
>>> +    version(1.0),
>>> +    helpstring("QGAVSSProvider Type Library")
>>> +]
>>> +library QGAVSSHWProviderLib
>>> +{
>>> +    importlib("stdole2.tlb");
>>> +    [
>>> +        uuid(6E6A3492-8D4D-440C-9619-5E5D0CC31CA8),
>>> +        helpstring("QGAVSSProvider Class")
>>> +    ]
>>> +    coclass QGAVSSHWProvider
>>> +    {
>>> +        [default] interface IUnknown;
>>> +    };
>>> +};
>>
>> Ok, I checked widl and it chokes on the importlib line.  If that can be
>> removed, it's fine to use widl.
>>
>> The invocation is
>>
>>      widl -m32/-m64 -o qga-provider.tlb -t qga-provider.idl
>>
>> where code to choose between -m32 and -m64 is already in the configure
>> script (search for `case "$cpu"`).
>>
>> Paolo
> 
> Unfortunately, if I remove importlib("stdole2.tlb"), generated .tlb seems
> rejected to register into Windows COM+ Catalog.
> 
> Wine has stdole2.tlb in its fakedlls directory, but widl does not accept
> this by
> 
>   error: Wrong or unsupported typelib magic 405a4d
> 
> Even if I copied native stdole2.tlb, widl fails with the same error.
> 
> Do you have any idea about this error?

No, I suggest you ask on the Wine mailing lists.  In the meanwhile we
can include a precompiled .tlb file in the QEMU repository and use midl.

Paolo