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 1.14 2002/09/08 10:23:25 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 <ddk/ntddk.h>
  33 #include <internal/ps.h>
  34
  35 #include <internal/debug.h>
  36
  37 /* FUNCTIONS *****************************************************************/
  38
  39 PVOID STDCALL
  40 IoGetInitialStack(VOID)
  41 {
  42   return(PsGetCurrentThread()->Tcb.InitialStack);
  43 }
  44
  45
  46 VOID STDCALL
  47 IoGetStackLimits(OUT PULONG LowLimit,
  48                  OUT PULONG HighLimit)
  49 {
  50   *LowLimit = (ULONG)NtCurrentTeb()->Tib.StackLimit;
  51   *HighLimit = (ULONG)NtCurrentTeb()->Tib.StackBase;
  52 }
  53
  54
  55 PEPROCESS STDCALL
  56 IoThreadToProcess(IN PETHREAD Thread)
  57 {
  58   return(Thread->ThreadsProcess);
  59 }
  60
  61
  62 PEPROCESS STDCALL
  63 IoGetRequestorProcess(IN PIRP Irp)
  64 {
  65   return(Irp->Tail.Overlay.Thread->ThreadsProcess);
  66 }
  67
  68
  69 /**********************************************************************
  70  * NAME                                                 EXPORTED
  71  *      IoSetThreadHardErrorMode@4
  72  *
  73  * ARGUMENTS
  74  *      HardErrorEnabled
  75  *              TRUE : enable hard errors processing;
  76  *              FALSE: do NOT process hard errors.
  77  *
  78  * RETURN VALUE
  79  *      Previous value for the current thread's hard errors
  80  *      processing policy.
  81  */
  82 BOOLEAN STDCALL EXPORTED
  83 IoSetThreadHardErrorMode(IN BOOLEAN HardErrorEnabled)
  84 {
  85   BOOLEAN PreviousHEM = NtCurrentTeb()->HardErrorDisabled;
  86
  87   NtCurrentTeb()->HardErrorDisabled = ((TRUE == HardErrorEnabled) ? FALSE : TRUE);
  88
  89   return((TRUE == PreviousHEM) ? FALSE : TRUE);
  90 }
  91
  92 /* EOF */