From: Bhaava Chaitanya Kancherla [Chaitanya.Kancherla@cmcltd.com]
Sent: Wednesday, September 27, 2000 7:33 AM
To: NT Developers Interest List
Subject: [ntdev] RE: Error 0xC000003A on an IoCreateSymbolicLink() call
.. .

I will qoute the following from Walt Oney's book's incompatabilty with
win98:

"Windows 98 doesn't understand the directory name \??. Consequently, you
need to put symbolic link names in the \DosDevices directory. You can use
\DosDevices in Windows NT also, because it is a symbolic link to the \??
directory. "

chaitanya

----- Original Message -----
From: SERGE DE LUCA <sdeluca@euro.lacie.com>
To: NT Developers Interest List <ntdev@lists.osr.com>
Sent: Wednesday, September 27, 2000 3:42 PM
Subject: [ntdev] RE: Error 0xC000003A on an IoCreateSymbolicLink() call .. .


> Hi all,
>
> In the driver, I have replaced the "\\??\\MyDriver" by the string
> "file://\\DosDevices\\MyDriver. Now the driver works on both Win98SE and
Win2K.
>
> But, can someone explain me why the previous syntaxe ("\\??\\MyDriver")
> didn't work? I thought the old syntaxe "\\DosDevices\\MyDriver" for
> the Win32 links should be replaced by the one "\\??\\MyDriver"!!
> Are "\\DosDevices" and "\\??" equivalent or not?
>
> Thanks a lot for any explanations.
>
> Regards,
>
> Serge DE LUCA
>
> > -----Original Message-----
> > From: SERGE DE LUCA [mailto:sdeluca@euro.lacie.com]
> > Sent: Tuesday, September 26, 2000 6:27 PM
> > To: NT Developers Interest List
> > Subject: [ntdev] Error 0xC000003A on an
> > IoCreateSymbolicLink() call ...
> >
> >
> > Hi all,
> >
> > I am actually developing a driver for Win98SE and Win2K.
> >
> > This driver seems to work fine on Win2K but not on Win98SE.
> > I have a strange issue : the call to the function
> > IoCreateSymbolicLink(...)
> > always fails with the error status 0xC000003A
> > (STATUS_OBJECT_PATH_NOT_FOUND).
> >
> > I can't figure out why (nor when) this call fails under Win98SE!
> >
> > Has anyone any clues?
> >
> > Thanks for any answers,
> >
> > Serge DE LUCA
> >
> >
> > PS.: Here is the code I use :
> >
> > PDEVICE_OBJECT
> > Drv_CreateFDO ( PDRIVER_OBJECT aDriverObjectPt )
> > {
> > UNICODE_STRING lDevNameUS;
> > UNICODE_STRING lLinkNameUS;
> > NTSTATUS lNTStatus;
> > PDEVICE_OBJECT lFuncDOPt;
> >
> > /*
> > * Initialize the device's names
> > */
> > RtlInitUnicodeString(&lDevNameUS,L"\\Device\\MyDriver");
> > RtlInitUnicodeString(&lLinkNameUS,L"\\??\\MyDriver");
> >
> > /*
> > * Create the device object
> > */
> > lFuncDOPt = NULL;
> > lNTStatus = IoCreateDevice( aDriverObjectPt,
> > sizeof(DeviceExtension),
> > &lDevNameUS,
> > FILE_DEVICE_UNKNOWN,
> > 0,
> > FALSE,
> > &lFuncDOPt);
> > if (NT_SUCCESS(lNTStatus))
> > {
> > /*
> > * Create the Symbolic Link
> > */
> > lNTStatus =
> > IoCreateSymbolicLink(&lLinkNameUS,&lDevNameUS);
> >
> > if (NT_ERROR(lNTStatus))
> > {
> > IoDeleteDevice(lFuncDOPt);
> > DbgPrint("Drv : Error [0x%lX] on
> > IoCreateSymbolicLink(...)\n",lNTStatus);
> >
> > lFuncDOPt = NULL;
> > }
> > }
> > else
> > DbgPrint("Drv : Error [0x%lX] on
> > IoCreateDevice(...)\n",lNTStatus);
> >
> > return lFuncDOPt;
> > }
> >
> > ---
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> >
>
> ---
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