Writing in registry in VISTA

NTDEV
1

Hello everybody,

I have a problem for R/W in the registry.
I have 2 drivers, one for the busDriver and another fot the child.

For install correctely the child driver, before I install the bus.
This busDriver write in the registry his name for the child.
After install the bus, teh child use the BusName for execute the “IoGetDeviceObjectPointer” function.

My problem, I don’t know why I didn’t arrive to Read and Write in the registry.

Bus ==> Write his name in the registry.
Child ==> Read the busName.

SomeOne have an Idea ??

Thanks a lot for your help.

Best Regards,

Kamel

2

For information, it’s my function that enable to write in the registry :

=============================================
InitializeObjectAttributes(
&objectAttributes,
&name ,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);

status = ZwCreateKey(&newKeyHandle ,
KEY_ALL_ACCESS,
&objectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
&Disposition );

status = ZwSetValueKey(
valueKeyHandle,
&nameKey,
0,
REG_EXPAND_SZ,
dataValue.Buffer,
dataValue.Length
);

All is ok with XP but not with VISTA

3

What is the string value of ‘name’ in your example below?

d

Sent from my phone with no t9, all spilling mistakes are not intentional.

-----Original Message-----
From: xxxxx@hotmail.com
Sent: Monday, October 27, 2008 7:49 AM
To: Windows System Software Devs Interest List
Subject: RE:[ntdev] Writing in registry in VISTA

For information, it’s my function that enable to write in the registry :

=============================================
InitializeObjectAttributes(
&objectAttributes,
&name ,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);

status = ZwCreateKey(&newKeyHandle ,
KEY_ALL_ACCESS,
&objectAttributes,
0,
NULL,
REG_OPTION_VOLATILE,
&Disposition );

status = ZwSetValueKey(
valueKeyHandle,
&nameKey,
0,
REG_EXPAND_SZ,
dataValue.Buffer,
dataValue.Length
);
=============================================

All is ok with XP but not with VISTA

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4

the string value “name” is the registry path:

L"\REGISTRY\MACHINE\SYSTEM\CurrentControlSet\Services\busDriver\Devices\Device000";

I would like to create teh registry “Device000”, in this registry create a parameter “busName” with his value.

5

xxxxx@hotmail.com wrote:

the string value “name” is the registry path:

L"\REGISTRY\MACHINE\SYSTEM\CurrentControlSet\Services\busDriver\Devices\Device000";

I would like to create teh registry “Device000”, in this registry create a parameter “busName” with his value.

The correct terminology here is that you want to create a “key” called
Device000, then in that key create a value called “busName”. The kernel
won’t create the key automatically. You will have to call ZwCreateKey,
THEN you can call ZwSetValueKey.

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

6

Yes you’re right TIM the problem is, before create the subkey “Device000”, it’s necessary to create the key “Devices”.

Thanks for your help TIM Roberts and Doron Holon.