From:	SMTP%"Scott.Johnson@seagatesoftware.com" 22-SEP-1997 20:32:36.60
To:	"'ntfsd@atria.com'" <ntfsd@atria.com>
CC:	
Subj:	RE: NTFSD: How can I get a complette path in CREATE ?

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From: Scott Johnson <Scott.Johnson@seagatesoftware.com>
To: "'ntfsd@atria.com'" <ntfsd@atria.com>
Subject: RE: NTFSD: How can I get a complette path in CREATE ?
Date: Mon, 22 Sep 1997 16:39:36 -0400
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Inaki,

You can do something like this from your CreateHandler:

    //
    //  Network drives are NOT associated with a volume parameter block
(Vpb), but 
    //  device objects representing local drives DO contain a Vpb.
    //
    if (irpSp->FileObject->DeviceObject->Vpb != NULL) {
    	pDevObject = irpSp->FileObject->DeviceObject->Vpb->RealDevice;
    }
    else {
    	pDevObject = irpSp->FileObject->DeviceObject;
    }
    
    //
    //  Determine the object name of the device to which the file
    //  open is destined.  
    //
    //  Note:    The device object pointer was instantiated earlier when
a
    //           check was made for a Vpb.
    //
    //
    status = ObQueryNameString( pDevObject, nameInfo, BUFFER_SIZE, &size
);



>----------
>From: 	Inaki Castillo[SMTP:omega24@kender.es]
>Sent: 	Monday, September 22, 1997 11:00 AM
>To: 	'ntfsd@atria.com'
>Subject: 	NTFSD: How can I get a complette path in CREATE ?
>
>I'm waiting in the CREATE function to open the filename that comes in
>FileObject. To get the complete path sometimes I add the part that comes in
>RelatedFileObject.
>
>With the path compossed this way I have finally a path that looks as follows:
>
>	/WINNT/SYSTEM32/DRIVERS/KERNL32.DLL
>
>If I pass this path to ZWCreateFile I get the error:
>
>	C000003A:	 PATH_NOT_FOUND
>
>I think this happens because no driver information is in the path.
>
>How can I get the complete path ? 
>Where can I find the drive related to the path?
>
>
>P.S:
>
>I've noticed also that if I wait on the Completion Routine, instead of stay
>in the CREATE hook,  I'm able to call the function ObQueryNameString and get
>an absolute path as the following:
>
>    Harddisk1/Partition1/WINNT/SYSTEM32/DRIVERS/KERNL32.DLL
>
>If I use this path I can open the file using ZWCreateFile without problems.
>The function ObQueryNameString doesnt work in the CREATE hook.
>
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