System Failure

NTDEV
1

Hi all,
I have odd problem with my driver, when I calls ‘ZwCreateFile’ function in my DispatchRoutine system WinXP switches off and it restart, but when I calls the same function ‘ZwCreateFile’ in DriverEntry function all is OK - why does??

My ‘ZwCreateFile’ function has such figure:

HANDLE uchwyt;
OBJECT_ATTRIBUTES Atrybuty ;
IO_STATUS_BLOCK blok ;

status = ZwCreateFile( &uchwyt,
SYNCHRONIZE | FILE_APPEND_DATA,
&Atrybuty,
&blok,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_WRITE | FILE_SHARE_READ,
FILE_OPEN_IF,
FILE_SYNCHRONOUS_IO_NONALERT,
NULL, 0 ) ;

I do not know if this is important, but at the beginning of my driver are such declarations:
#pragma alloc_text (INIT, DriverEntry)
#pragma alloc_text (PAGE, Ctrl2capDispatchGeneral) //My DispatchRoutine

Grand merci for every help - THX
It greeting from Polish.

2

>I do not know if this is important, but at the beginning of my driver are such declarations:

#pragma alloc_text (INIT, DriverEntry)
#pragma alloc_text (PAGE, Ctrl2capDispatchGeneral) //My DispatchRoutine

You SHOULD know if these are important. You have no business trying to write a driver without knowning about paged, nonpaged, and init sections.

You also can’t write a driver without knowing about IRQL and being able to understand the sentence about it at the bottom of the page describing a driver function.

This stuff is in the manual. Its there because it is important.

Loren

3

How many times must this be explained on this list?

For Christ’s sake, read the DDK documents.

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Marcin O.
Sent: Monday, July 14, 2003 2:49 AM
To: Windows System Software Developers Interest List
Subject: [ntdev] System Failure

Hi all,

I have odd problem with my driver, when I calls ‘ZwCreateFile’
function in my DispatchRoutine system WinXP switches off and it restart,
but when I calls the same function ‘ZwCreateFile’ in DriverEntry
function all is OK - why does??

My ‘ZwCreateFile’ function has such figure:

HANDLE uchwyt;
OBJECT_ATTRIBUTES Atrybuty ;
IO_STATUS_BLOCK blok ;

status = ZwCreateFile( &uchwyt,
SYNCHRONIZE | FILE_APPEND_DATA,
&Atrybuty,
&blok,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_WRITE | FILE_SHARE_READ,
FILE_OPEN_IF,
FILE_SYNCHRONOUS_IO_NONALERT,
NULL, 0 ) ;

I do not know if this is important, but at the beginning of my driver
are such declarations:

#pragma alloc_text (INIT, DriverEntry)
#pragma alloc_text (PAGE, Ctrl2capDispatchGeneral) //My
DispatchRoutine

Grand merci for every help - THX
It greeting from Polish.

You are currently subscribed to ntdev as: xxxxx@storagecraft.com
To unsubscribe send a blank email to xxxxx@lists.osr.com