Call "undocumented" NTDLL functions with Cygwin/gcc?

Call "undocumented" NTDLL functions with Cygwin/gcc?

[David Arnstein]

I would like to use some of the "undocumented" NTDLL functions from
within a C or C++ program. I would like to compile this program from
Cygwin's C or C++ compiler.

The functions I refer to involve Registry operations, such as 
NtQueryValueKey() and NtEnumerateValueKey(). I found some sparse
documentation here:
http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/NT%20Objects/Key/NtQueryValueKey.html

I could not find these under /usr/include. Any suggestions?

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Re: Call "undocumented" NTDLL functions with Cygwin/gcc?

[Corinna Vinschen]

On Nov  1 03:49, David Arnstein wrote:
> I would like to use some of the "undocumented" NTDLL functions from
> within a C or C++ program. I would like to compile this program from
> Cygwin's C or C++ compiler.
> 
> The functions I refer to involve Registry operations, such as 
> NtQueryValueKey() and NtEnumerateValueKey(). I found some sparse
> documentation here:
> http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/NT%20Objects/Key/NtQueryValueKey.html
> 
> I could not find these under /usr/include. Any suggestions?

Many of the ntdll functions and types are defined under
/usr/include/w32api/ddk.  The definitions are not complete so expect
that you have to create your own header to define missing symbols.
Patches to extend the files in w32api (maintained by the MingW team) are
always welcome.


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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Re: Call "undocumented" NTDLL functions with Cygwin/gcc?

[Christopher Faylor]

On Sat, Nov 01, 2008 at 10:14:44AM +0100, Corinna Vinschen wrote:
>On Nov  1 03:49, David Arnstein wrote:
>>I would like to use some of the "undocumented" NTDLL functions from
>>within a C or C++ program.  I would like to compile this program from
>>Cygwin's C or C++ compiler.
>>
>>The functions I refer to involve Registry operations, such as
>>NtQueryValueKey() and NtEnumerateValueKey().  I found some sparse
>>documentation here:
>>http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/NT%20Objects/Key/NtQueryValueKey.html
>>
>>I could not find these under /usr/include.  Any suggestions?
>
>Many of the ntdll functions and types are defined under
>/usr/include/w32api/ddk.  The definitions are not complete so expect
>that you have to create your own header to define missing symbols.
>Patches to extend the files in w32api (maintained by the MingW team)
>are always welcome.

But they don't go to this mailing list.  Check out mingw.org.

cgf

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Re: Call "undocumented" NTDLL functions with Cygwin/gcc?

[David Arnstein]

> On Sat, Nov 01, 2008 at 10:14:44AM +0100, Corinna Vinschen wrote:
> >Many of the ntdll functions and types are defined under
> >/usr/include/w32api/ddk.  The definitions are not complete so expect
> >that you have to create your own header to define missing symbols.
> >Patches to extend the files in w32api (maintained by the MingW team)
> >are always welcome.
 
On Sat, Nov 01, 2008 at 10:13:57AM -0400, Christopher Faylor wrote:
> But they don't go to this mailing list.  Check out mingw.org.

OK, I will submit any patches to MingW instead of Cygin. But, back to
Cygwin. The directory /usr/include/w32api/ddk does not seem to be
available when I use "gcc -mno-cygwin." I mean, I have this line of code 
in my source file:
	#include <w32api/ddk/ntapi.h>
This is how I am trying to compile:
	gcc -mno-cygwin -Wall -g bodge.c -o bodge
	bodge.c:2:30: w32api/ddk/ntapi.h: No such file or directory

So what is the proper way to use the DDK functions in Cygwin? You
mention MingW, so I assume that I should use the MingW compiler (gcc
-mno-cygwin). Do I assume wrong?
-- 
David Arnstein                       (00)
arnstein@pobox.com                 {{   }}
                                     ^^

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Re: Call "undocumented" NTDLL functions with Cygwin/gcc?

[Brian Dessent]

David Arnstein wrote:

>         #include <w32api/ddk/ntapi.h>

You don't need the w32api prefix, that is part of the built-in search
path -- otherwise, #include <windows.h> would not work.

You also need to link with -lntdll.

Brian

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Re: Call "undocumented" NTDLL functions with Cygwin/gcc?

[Corinna Vinschen]

On Nov  1 13:09, Brian Dessent wrote:
> David Arnstein wrote:
> 
> >         #include <w32api/ddk/ntapi.h>
> 
> You don't need the w32api prefix

Additionally, since you're building a MingW application (-mno-cygwin),
/usr/include is *not* in the search path for, hopefully, obvious reasons.


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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