From - Tue Sep 16 11:14:14 1997
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From: Gunnar.E.Nilsson@emw.ericsson.se
Newsgroups: comp.os.ms-windows.programmer.nt.kernel-mode
Subject: Re: ZwCreateFile  cannot file the file
Date: Tue, 16 Sep 1997 15:33:26 +0200
Organization: Ericsson Microwave Systems AB
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fdebaca@getntds.com wrote:
> 
> Ok! I give up.
> How do I setup the filename for ZwCreateFile
> I've tried,
>         "c:\\pathname\\filename.bin"
>         "\\pathname\\filename.bin"
>         "c:\\filename.bin",
>         "\\filename.bin",
>         "\\DosDevices\\c:\\filename.bin",
>         "\\DosDevices\\filename.bin".
> I did the InitialializeObjectAttribute before I did the ZwCreatFile().
> Filename.bin was in the above directories.
> 
> All I want to do Is allow the application to tell the driver, "here's
> the file I want you to load into the Gate Array of the device".
> 
> John Vasquez - my direct e-mail is jvasquez@getntds.com

Hi here is how I create and WRITE a file:
file->File is like: "\\DosDevices\\c:\\temp\\file.bin"

	HANDLE FileHandle;
	OBJECT_ATTRIBUTES ObjectAttributes;
	CUString ObjectName(file->File);
  IO_STATUS_BLOCK IoStatus;

//  KdPrint( ("ZwCF: Attempting to open %wZ\n", &ObjectName.m_String));

	InitializeObjectAttributes(
			&ObjectAttributes,
		  &ObjectName.m_String,
      OBJ_CASE_INSENSITIVE,
      NULL,
      NULL);

	LARGE_INTEGER size;
	size = RtlConvertLongToLargeInteger(BytesToGet[i]);
	status = ZwCreateFile(
			&FileHandle,
			GENERIC_WRITE | GENERIC_READ,
			&ObjectAttributes,
			&IoStatus,
			&size,
			FILE_ATTRIBUTE_NORMAL,
			FILE_SHARE_READ,
			FILE_OVERWRITE_IF,
			FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT,
			NULL,  // eabuffer
			0 );   // ealength
	if (!NT_SUCCESS(status)) {
		KdPrint( ("ZwCreateFile problem: %8X", status) );
    ZwClose( FileHandle );
		return status;
	};