From:	SMTP%"roman@softwinter.com"  7-NOV-1997 16:52:28.26
To:	"'jstanton@lancache.com'" <jstanton@lancache.com>,        "'perotin@esker.fr'" <perotin@esker.fr>
CC:	"'NTFSD Developer List'" <ntfsd@atria.com>
Subj:	RE: [ntfsd] RE: NtXxx calls

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Message-ID: <01BCEB36.A13F41D0.roman@softwinter.com>
From: "Roman Rutman (sw)" <roman@softwinter.com>
Reply-To: "roman@softwinter.com" <roman@softwinter.com>
To: "'jstanton@lancache.com'" <jstanton@lancache.com>,
        "'perotin@esker.fr'" <perotin@esker.fr>
Cc: "'NTFSD Developer List'" <ntfsd@atria.com>
Subject: RE: [ntfsd] RE: NtXxx calls
Date: Fri, 7 Nov 1997 04:35:51 +0200
Organization: Soft Winter
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On Thursday, November 06, 1997 9:00 PM, Jim Stanton 
[SMTP:jstanton@lancache.com] wrote:
> > I'm trying to retrieve the Authentication ID from the current
> > process in a fs
> > driver.
> > The NtOpenProcessToken() function always returns
> > STATUS_ACCESS_VIOLATION.

This code 100% working...

NTSTATUS GetTokenFromProccesID(HANDLE *h, DWORD ProcessId)
{
	HANDLE hToken=0;
	HANDLE CurrentProcess;
	NTSTATUS ntStatus;
	CurrentProcess = MyOpenProcess(PROCESS_ALL_ACCESS, FALSE, 
ProcessId);
	if (CurrentProcess)
	{
		ntStatus = ZwOpenProcessToken(CurrentProcess, TOKEN_ALL_ACCESS, 
&hToken);
		if(NT_SUCCESS(ntStatus))
		  *h=hToken;
		else
		  *h=0;
		ZwClose(CurrentProcess);
	}
	return ntStatus;
}
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