reactos/lib/kernel32/misc/handle.c

   1 /* $Id: handle.c,v 1.9 2003/01/15 21:24:35 chorns Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS system libraries
   5  * FILE:            lib/kernel32/misc/handle.c
   6  * PURPOSE:         Object  functions
   7  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
   8  * UPDATE HISTORY:
   9  *                  Created 01/11/98
  10  */
  11
  12 /* INCLUDES ******************************************************************/
  13
  14 #include <k32.h>
  15
  16 #define NDEBUG
  17 #include <kernel32/kernel32.h>
  18
  19 /* FUNCTIONS *****************************************************************/
  20
  21 WINBOOL WINAPI GetHandleInformation(HANDLE hObject, LPDWORD lpdwFlags)
  22 {
  23    OBJECT_DATA_INFORMATION HandleInfo;
  24    ULONG BytesWritten;
  25    NTSTATUS errCode;
  26
  27    errCode = NtQueryObject(hObject,
  28                            ObjectDataInformation,
  29                            &HandleInfo,
  30                            sizeof(OBJECT_DATA_INFORMATION),
  31                            &BytesWritten);
  32    if (!NT_SUCCESS(errCode))
  33      {
  34         SetLastErrorByStatus (errCode);
  35         return FALSE;
  36      }
  37    if ( HandleInfo.bInheritHandle )
  38      *lpdwFlags &= HANDLE_FLAG_INHERIT;
  39    if ( HandleInfo.bProtectFromClose )
  40      *lpdwFlags &= HANDLE_FLAG_PROTECT_FROM_CLOSE;
  41    return TRUE;
  42 }
  43
  44
  45 WINBOOL STDCALL SetHandleInformation(HANDLE hObject,
  46                                      DWORD dwMask,
  47                                      DWORD dwFlags)
  48 {
  49    OBJECT_DATA_INFORMATION HandleInfo;
  50    NTSTATUS errCode;
  51    ULONG BytesWritten;
  52
  53    errCode = NtQueryObject(hObject,
  54                            ObjectDataInformation,
  55                            &HandleInfo,
  56                            sizeof(OBJECT_DATA_INFORMATION),
  57                            &BytesWritten);
  58    if (!NT_SUCCESS(errCode))
  59      {
  60         SetLastErrorByStatus (errCode);
  61         return FALSE;
  62      }
  63    if (dwMask & HANDLE_FLAG_INHERIT)
  64      {
  65         HandleInfo.bInheritHandle = TRUE;
  66      }
  67    if (dwMask & HANDLE_FLAG_PROTECT_FROM_CLOSE)
  68      {
  69         HandleInfo.bProtectFromClose = TRUE;
  70      }
  71
  72    errCode = NtSetInformationObject(hObject,
  73                                     ObjectDataInformation,
  74                                     &HandleInfo,
  75                                     sizeof(OBJECT_DATA_INFORMATION));
  76    if (!NT_SUCCESS(errCode))
  77      {
  78         SetLastErrorByStatus (errCode);
  79         return FALSE;
  80      }
  81
  82    return TRUE;
  83 }
  84
  85
  86 WINBOOL STDCALL CloseHandle(HANDLE  hObject)
  87 /*
  88  * FUNCTION: Closes an open object handle
  89  * PARAMETERS:
  90  *       hObject = Identifies an open object handle
  91  * RETURNS: If the function succeeds, the return value is nonzero
  92  *          If the function fails, the return value is zero
  93  */
  94 {
  95    NTSTATUS errCode;
  96
  97    if (IsConsoleHandle(hObject))
  98      {
  99         return(CloseConsoleHandle(hObject));
 100      }
 101
 102    errCode = NtClose(hObject);
 103    if (!NT_SUCCESS(errCode))
 104      {
 105         SetLastErrorByStatus (errCode);
 106         return FALSE;
 107      }
 108
 109    return TRUE;
 110 }
 111
 112
 113 WINBOOL STDCALL DuplicateHandle(HANDLE hSourceProcessHandle,
 114                                 HANDLE hSourceHandle,
 115                                 HANDLE hTargetProcessHandle,
 116                                 LPHANDLE lpTargetHandle,
 117                                 DWORD dwDesiredAccess,
 118                                 BOOL bInheritHandle,
 119                                 DWORD dwOptions)
 120 {
 121    NTSTATUS errCode;
 122    if (IsConsoleHandle(hSourceHandle))
 123    {
 124       /* FIXME: call CSRSS for console handle duplication */
 125       if (hSourceProcessHandle == hTargetProcessHandle)
 126       {
 127          *lpTargetHandle = hSourceHandle;
 128          return TRUE;
 129       }
 130       else
 131       {
 132          return FALSE;
 133       }
 134    }
 135
 136    errCode = NtDuplicateObject(hSourceProcessHandle,
 137                                hSourceHandle,
 138                                hTargetProcessHandle,
 139                                lpTargetHandle,
 140                                dwDesiredAccess,
 141                                (BOOLEAN)bInheritHandle,
 142                                dwOptions);
 143    if (!NT_SUCCESS(errCode))
 144      {
 145         SetLastErrorByStatus (errCode);
 146         return FALSE;
 147      }
 148
 149    return TRUE;
 150 }
 151
 152 UINT STDCALL SetHandleCount(UINT nCount)
 153 {
 154    return(nCount);
 155 }
 156
 157
 158 /* EOF */