reactos/ntoskrnl/ps/win32.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id: win32.c,v 1.9 2004/09/28 15:02:29 weiden Exp $
  20  *
  21  * COPYRIGHT:              See COPYING in the top level directory
  22  * PROJECT:                ReactOS kernel
  23  * FILE:                   ntoskrnl/ps/win32.c
  24  * PURPOSE:                win32k support
  25  * PROGRAMMER:             Eric Kohl (ekohl@rz-online.de)
  26  * REVISION HISTORY:
  27  *               04/01/2002: Created
  28  */
  29
  30 /* INCLUDES ****************************************************************/
  31
  32 #include <ntoskrnl.h>
  33
  34 /* TYPES *******************************************************************/
  35
  36 /* GLOBALS ******************************************************************/
  37
  38 static PW32_PROCESS_CALLBACK PspWin32ProcessCallback = NULL;
  39 static PW32_THREAD_CALLBACK PspWin32ThreadCallback = NULL;
  40 static ULONG PspWin32ProcessSize = 0;
  41 static ULONG PspWin32ThreadSize = 0;
  42
  43 /* FUNCTIONS ***************************************************************/
  44
  45 PW32THREAD STDCALL
  46 PsGetWin32Thread(VOID)
  47 {
  48   return(PsGetCurrentThread()->Tcb.Win32Thread);
  49 }
  50
  51 PW32PROCESS STDCALL
  52 PsGetWin32Process(VOID)
  53 {
  54   return(PsGetCurrentProcess()->Win32Process);
  55 }
  56
  57 NTSTATUS STDCALL
  58 PsCreateWin32Process(PEPROCESS Process)
  59 {
  60   if (Process->Win32Process != NULL)
  61     return(STATUS_SUCCESS);
  62
  63   Process->Win32Process = ExAllocatePool(NonPagedPool,
  64                                          PspWin32ProcessSize);
  65   if (Process->Win32Process == NULL)
  66     return(STATUS_NO_MEMORY);
  67
  68   RtlZeroMemory(Process->Win32Process,
  69                 PspWin32ProcessSize);
  70
  71   return(STATUS_SUCCESS);
  72 }
  73
  74
  75 /*
  76  * @implemented
  77  */
  78 VOID STDCALL
  79 PsEstablishWin32Callouts (PW32_PROCESS_CALLBACK W32ProcessCallback,
  80                           PW32_THREAD_CALLBACK W32ThreadCallback,
  81                           PVOID Param3,
  82                           PVOID Param4,
  83                           ULONG W32ThreadSize,
  84                           ULONG W32ProcessSize)
  85 {
  86   PspWin32ProcessCallback = W32ProcessCallback;
  87   PspWin32ThreadCallback = W32ThreadCallback;
  88
  89   PspWin32ProcessSize = W32ProcessSize;
  90   PspWin32ThreadSize = W32ThreadSize;
  91 }
  92
  93
  94 NTSTATUS
  95 PsInitWin32Thread (PETHREAD Thread)
  96 {
  97   PEPROCESS Process;
  98
  99   Process = Thread->ThreadsProcess;
 100
 101   if (Process->Win32Process == NULL)
 102     {
 103       Process->Win32Process = ExAllocatePool (NonPagedPool,
 104                                               PspWin32ProcessSize);
 105       if (Process->Win32Process == NULL)
 106         return STATUS_NO_MEMORY;
 107
 108       RtlZeroMemory (Process->Win32Process,
 109                      PspWin32ProcessSize);
 110
 111       if (PspWin32ProcessCallback != NULL)
 112         {
 113           PspWin32ProcessCallback (Process, TRUE);
 114         }
 115     }
 116
 117   if (Thread->Tcb.Win32Thread == NULL)
 118     {
 119       Thread->Tcb.Win32Thread = ExAllocatePool (NonPagedPool,
 120                                                 PspWin32ThreadSize);
 121       if (Thread->Tcb.Win32Thread == NULL)
 122         return STATUS_NO_MEMORY;
 123
 124       RtlZeroMemory (Thread->Tcb.Win32Thread,
 125                      PspWin32ThreadSize);
 126
 127       if (PspWin32ThreadCallback != NULL)
 128         {
 129           PspWin32ThreadCallback (Thread, TRUE);
 130         }
 131     }
 132
 133   return(STATUS_SUCCESS);
 134 }
 135
 136
 137 VOID
 138 PsTerminateWin32Process (PEPROCESS Process)
 139 {
 140   if (Process->Win32Process == NULL)
 141     return;
 142
 143   if (PspWin32ProcessCallback != NULL)
 144     {
 145       PspWin32ProcessCallback (Process, FALSE);
 146     }
 147
 148   ExFreePool (Process->Win32Process);
 149 }
 150
 151
 152 VOID
 153 PsTerminateWin32Thread (PETHREAD Thread)
 154 {
 155   if (Thread->Tcb.Win32Thread != NULL)
 156   {
 157     if (PspWin32ThreadCallback != NULL)
 158     {
 159       PspWin32ThreadCallback (Thread, FALSE);
 160     }
 161
 162     ExFreePool (Thread->Tcb.Win32Thread);
 163   }
 164 }
 165
 166 /* EOF */