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 /* $Id$
  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 <ddk/ntddk.h>
  33 #include <internal/ps.h>
  34 #include <napi/win32.h>
  35
  36 /* TYPES *******************************************************************/
  37
  38 /* GLOBALS ******************************************************************/
  39
  40 static PW32_PROCESS_CALLBACK PspWin32ProcessCallback = NULL;
  41 static PW32_THREAD_CALLBACK PspWin32ThreadCallback = NULL;
  42 static ULONG PspWin32ProcessSize = 0;
  43 static ULONG PspWin32ThreadSize = 0;
  44
  45 /* FUNCTIONS ***************************************************************/
  46
  47 PW32THREAD STDCALL
  48 PsGetWin32Thread(VOID)
  49 {
  50   return(PsGetCurrentThread()->Win32Thread);
  51 }
  52
  53 PW32PROCESS STDCALL
  54 PsGetWin32Process(VOID)
  55 {
  56   return(PsGetCurrentProcess()->Win32Process);
  57 }
  58
  59 NTSTATUS STDCALL
  60 PsCreateWin32Process(PEPROCESS Process)
  61 {
  62   if (Process->Win32Process != NULL)
  63     return(STATUS_SUCCESS);
  64
  65   Process->Win32Process = ExAllocatePool(NonPagedPool,
  66                                          PspWin32ProcessSize);
  67   if (Process->Win32Process == NULL)
  68     return(STATUS_NO_MEMORY);
  69
  70   RtlZeroMemory(Process->Win32Process,
  71                 PspWin32ProcessSize);
  72
  73   return(STATUS_SUCCESS);
  74 }
  75
  76
  77 /*
  78  * @implemented
  79  */
  80 VOID STDCALL
  81 PsEstablishWin32Callouts (PW32_PROCESS_CALLBACK W32ProcessCallback,
  82                           PW32_THREAD_CALLBACK W32ThreadCallback,
  83                           PVOID Param3,
  84                           PVOID Param4,
  85                           ULONG W32ThreadSize,
  86                           ULONG W32ProcessSize)
  87 {
  88   PspWin32ProcessCallback = W32ProcessCallback;
  89   PspWin32ThreadCallback = W32ThreadCallback;
  90
  91   PspWin32ProcessSize = W32ProcessSize;
  92   PspWin32ThreadSize = W32ThreadSize;
  93 }
  94
  95
  96 NTSTATUS
  97 PsInitWin32Thread (PETHREAD Thread)
  98 {
  99   PEPROCESS Process;
 100
 101   Process = Thread->ThreadsProcess;
 102
 103   if (Process->Win32Process == NULL)
 104     {
 105       Process->Win32Process = ExAllocatePool (NonPagedPool,
 106                                               PspWin32ProcessSize);
 107       if (Process->Win32Process == NULL)
 108         return STATUS_NO_MEMORY;
 109
 110       RtlZeroMemory (Process->Win32Process,
 111                      PspWin32ProcessSize);
 112
 113       if (PspWin32ProcessCallback != NULL)
 114         {
 115           PspWin32ProcessCallback (Process, TRUE);
 116         }
 117     }
 118
 119   if (Thread->Win32Thread == NULL)
 120     {
 121       Thread->Win32Thread = ExAllocatePool (NonPagedPool,
 122                                             PspWin32ThreadSize);
 123       if (Thread->Win32Thread == NULL)
 124         return STATUS_NO_MEMORY;
 125
 126       RtlZeroMemory (Thread->Win32Thread,
 127                      PspWin32ThreadSize);
 128
 129       if (PspWin32ThreadCallback != NULL)
 130         {
 131           PspWin32ThreadCallback (Thread, TRUE);
 132         }
 133     }
 134
 135   return(STATUS_SUCCESS);
 136 }
 137
 138
 139 VOID
 140 PsTerminateWin32Process (PEPROCESS Process)
 141 {
 142   if (Process->Win32Process == NULL)
 143     return;
 144
 145   if (PspWin32ProcessCallback != NULL)
 146     {
 147       PspWin32ProcessCallback (Process, FALSE);
 148     }
 149
 150   ExFreePool (Process->Win32Process);
 151 }
 152
 153
 154 VOID
 155 PsTerminateWin32Thread (PETHREAD Thread)
 156 {
 157   if (Thread->Win32Thread == NULL)
 158     return;
 159
 160   if (PspWin32ThreadCallback != NULL)
 161     {
 162       PspWin32ThreadCallback (Thread, FALSE);
 163     }
 164
 165   ExFreePool (Thread->Win32Thread);
 166 }
 167
 168 /* EOF */