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List:       ms-smartcardddk
Subject:    Re: about smartcardcreatelink
From:       "Pauley, John" <PauleyJ () CYBERMARK ! COM>
Date:       2000-09-08 14:48:27
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Used IoRegisterDeviceInterface(...) with WDM drivers and
SmartcardCreateLink(...) with VXD drivers.  Note that
IoRegisterDeviceInterface, if successful, creates the symbolic link, thus
SmartcardCreateLink(...), same as IoCreateSymbolicLink(...), is not
necessary.  Also note that the caller is responsible deleting the symbolic
link and for freeing the UNICODE_STRING SymbolicLinkName when it is no
longer needed.  The documentation only says freeing the SymbolicLinkName,
but the symbolic link object itself will leak unless deleted.  So during
your remove device routing you may have something like:

...
if(pDeviceExtension->LinkName.Buffer){
        IoDeleteSymbolicLink(&pDeviceExtension->LinkName);
        RtlFreeUnicodeString(&pDeviceExtension->LinkName);
}
...

John

> -----Original Message-----
> From: Shyh-Shin Lee(TP) [mailto:Shyhshinl@O2MICRO.COM.TW]
> Sent: Thursday, September 07, 2000 11:49 PM
> To: SmartCardDDK@DISCUSS.MICROSOFT.COM
> Subject: Re: about smartcardcreatelink
>
>
> So Pauley,
>
> So to avoid this problem, we should only use
> SmartCardCreateLink and don't
> use IoRegisterDeviceInterface.
> Is that right?
>
> Lees.
>
> > -----Original Message-----
> > From: Pauley, John [mailto:PauleyJ@CYBERMARK.COM]
> > Sent: Thursday, September 07, 2000 9:42 PM
> > To: SmartCardDDK@DISCUSS.MICROSOFT.COM
> > Subject: Re: about smartcardcreatelink
> >
> >
> > Are you also using IoRegisterDeviceInterface(...)?  Using
> > both will cause
> > more "readers" to appear on the system.  See Articles #001153
> > 99/07/09 and
> > #001154 99/07/09.
> >
> > > -----Original Message-----
> > > From: allen hu [mailto:ahu@ALCORMICRO.COM]
> > > Sent: Thursday, September 07, 2000 8:04 AM
> > > To: SmartCardDDK@DISCUSS.MICROSOFT.COM
> > > Subject: about smartcardcreatelink
> > >
> > >
> > > Hi All;
> > >
> > >     After I use smartcardcreatelink to link with reource manager.
> > >    The IFDTEST.EXE always show that I have more than 2
> > > readesr on my system.
> > >
> > >    The screen display, the vendor , ifdtype , type- three fields.
> > >
> > > The vendor field show smartcartExtennsion->VendorAttr.NendorName
> > > The ifdtype field show smartcartExtennsion->VendorAttr.ifdtype
> > >
> > > for 1st reader:
> > > The type field show WDM PNP
> > > for 2nd reader:
> > > The type field show NT 4.00
> > >
> > > After I do plug and play , IFDTEST.EXE show more one reader
> > >
> > > for the another reader:
> > > The type field show NT 4.00
> > >
> > >  My os is win 98 SE.
> > >
> > >
> > > pls help
> > >
> > > Allen
> > >
> > >
> > >
> > >
> > >
> >
>



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