reactos/ntoskrnl/io/process.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 1998, 1999, 2000, 2001 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: process.c,v 1.18 2004/08/15 16:39:03 chorns Exp $
  20  *
  21  * COPYRIGHT:       See COPYING in the top level directory
  22  * PROJECT:         ReactOS kernel
  23  * FILE:            ntoskrnl/io/process.c
  24  * PURPOSE:         Process functions that, bizarrely, are in the iomgr
  25  * PROGRAMMER:      David Welch (welch@mcmail.com)
  26  * UPDATE HISTORY:
  27  *                  Created 22/05/98
  28  */
  29
  30 /* INCLUDES *****************************************************************/
  31
  32 #include <ntoskrnl.h>
  33 #include <internal/debug.h>
  34
  35 /* FUNCTIONS *****************************************************************/
  36
  37 /*
  38  * @implemented
  39  */
  40 PVOID STDCALL
  41 IoGetInitialStack(VOID)
  42 {
  43   return(PsGetCurrentThread()->Tcb.InitialStack);
  44 }
  45
  46
  47 /*
  48  * @implemented
  49  */
  50 VOID STDCALL
  51 IoGetStackLimits(OUT PULONG LowLimit,
  52                  OUT PULONG HighLimit)
  53 {
  54   *LowLimit = (ULONG)NtCurrentTeb()->Tib.StackLimit;
  55   *HighLimit = (ULONG)NtCurrentTeb()->Tib.StackBase;
  56 }
  57
  58 /*
  59  * @unimplemented
  60  */
  61 STDCALL
  62 BOOLEAN
  63 IoIsSystemThread(
  64     IN PETHREAD Thread
  65     )
  66 {
  67         UNIMPLEMENTED;
  68         return FALSE;
  69 }
  70
  71 /*
  72  * @implemented
  73  */
  74 PEPROCESS STDCALL
  75 IoThreadToProcess(IN PETHREAD Thread)
  76 {
  77   return(Thread->ThreadsProcess);
  78 }
  79
  80
  81 /*
  82  * @implemented
  83  */
  84 PEPROCESS STDCALL
  85 IoGetRequestorProcess(IN PIRP Irp)
  86 {
  87   return(Irp->Tail.Overlay.Thread->ThreadsProcess);
  88 }
  89
  90
  91 /**********************************************************************
  92  * NAME                                                 EXPORTED
  93  *      IoSetThreadHardErrorMode@4
  94  *
  95  * ARGUMENTS
  96  *      HardErrorEnabled
  97  *              TRUE : enable hard errors processing;
  98  *              FALSE: do NOT process hard errors.
  99  *
 100  * RETURN VALUE
 101  *      Previous value for the current thread's hard errors
 102  *      processing policy.
 103  *
 104  * @implemented
 105  */
 106 BOOLEAN STDCALL
 107 IoSetThreadHardErrorMode(IN BOOLEAN HardErrorEnabled)
 108 {
 109   BOOLEAN PreviousHEM = (BOOLEAN)(NtCurrentTeb()->HardErrorDisabled);
 110
 111   NtCurrentTeb()->HardErrorDisabled = ((TRUE == HardErrorEnabled) ? FALSE : TRUE);
 112
 113   return((TRUE == PreviousHEM) ? FALSE : TRUE);
 114 }
 115
 116 /* EOF */