[driverobject]

Hi all,

I'm %100 newbie in the kernel and I'm having trouble compiling the below code with the latest 7.1 version of the winddk ,using the x86 free winxp environment for the build.

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#include <ntddk.h>
#include <windef.h>


.....

void GetNtAddress(PVOID bufOutput, ULONG outputBufferLength)
{
	DbgPrint("Enter GetNtAddress\n");
                PEPROCESS ntProc = PsInitialSystemProcess;
	DbgPrint("");
	return;
}

This line

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  PEPROCESS ntProc = PsInitialSystemProcess;

Where I'm trying to get the address of the EPROCESS object of the System process fails miserably. It gives me the below error:

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BUILD: Compile and Link for x86
BUILD: Start time: Sun Oct 24 03:48:45 2010
BUILD: Examining c:\tstdrv\sys directory for files to compile.
    c:\tstdrv\sys Invalidating OACR warning log for 'root:x86fre'
BUILD: Compiling and Linking c:\tstdrv\sys directory
Configuring OACR for 'root:x86fre' - <OACR on>
_NT_TARGET_VERSION SET TO WINXP
Compiling - tstdrv.c
1>errors in directory c:\tstdrv\sys
1>c:\tstdrv\sys\tstdrv.c(63) : error C2275: 'PEPROCESS' : illegal use of thi
s type as an expression
1>c:\tstdrv\sys\tstdrv.c(63) : error C2146: syntax error : missing ';' befor
e identifier 'ntProc'
1>c:\tstdrv\sys\tstdrv.c(63) : error C2065: 'ntProc' : undeclared identifier

Linking Executable - objfre_wxp_x86\i386\tstdrv.sys
1>link : error LNK1181: cannot open input file 'c:\tstdrv\sys\objfre_wxp_x86\i
386\tstdrv.obj'
BUILD: Finish time: Sun Oct 24 03:48:46 2010
BUILD: Done

    3 files compiled - 1 Warning - 3 Errors
    1 executable built - 1 Error

This is not making sense and I am a stupid person. Thanks for any replies.

[GamingMasteR]

Hi,

This is C language not C++, you declare your local variables in the beginning of code blocks (braces { }) :

Code: Select all

void GetNtAddress(PVOID bufOutput, ULONG outputBufferLength)
{
    PEPROCESS ntProc;
    DbgPrint("Enter GetNtAddress\n");
    ntProc = PsInitialSystemProcess;
}

[driverobject]

I am indeed stupid, now certified.

Thank you master.

[GamingMasteR]

No one stupid here, you just need to practise more .
Most people are not used to code in pure C .

[gglittle]

You can however use C++ as a superset for compiling C code. By doing so you get stronger type checking as well the ability to define variables other than at the beginning of a scope. You can compile with C++ by either defining the source file with CPP or setting /TP in the C_FLAGS. You will also have to use extern "C" {} around most of, if not all of the WDK header files.

But do remember that you are still developing a C program and NOT C++.

Gary