dlls/ntdll/error.c

   1 /*
   2  * NTDLL error handling
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  * Copyright 2002 Andriy Palamarchuk
   6  * Copyright 2010 André Hentschel
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include <stdarg.h>
  24
  25 #include "ntstatus.h"
  26 #define WIN32_NO_STATUS
  27 #include "windef.h"
  28 #include "winternl.h"
  29 #include "winerror.h"
  30 #include "error.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  34
  35 /**************************************************************************
  36  *           RtlNtStatusToDosErrorNoTeb (NTDLL.@)
  37  *
  38  * Convert an NTSTATUS code to a Win32 error code.
  39  *
  40  * PARAMS
  41  *  status [I] Nt error code to map.
  42  *
  43  * RETURNS
  44  *  The mapped Win32 error code, or ERROR_MR_MID_NOT_FOUND if there is no
  45  *  mapping defined.
  46  */
  47 ULONG WINAPI RtlNtStatusToDosErrorNoTeb( NTSTATUS status )
  48 {
  49     ULONG ret;
  50
  51     if (!status || (status & 0x20000000)) return status;
  52
  53     /* 0xd... is equivalent to 0xc... */
  54     if ((status & 0xf0000000) == 0xd0000000) status &= ~0x10000000;
  55
  56     /* now some special cases */
  57     if (HIWORD(status) == 0xc001 || HIWORD(status) == 0x8007 || HIWORD(status) == 0xc007)
  58         return LOWORD( status );
  59
  60     ret = map_status( status );
  61     if (ret == ERROR_MR_MID_NOT_FOUND && status != STATUS_MESSAGE_NOT_FOUND)
  62         WARN( "no mapping for %08x\n", status );
  63     return ret;
  64 }
  65
  66 /**************************************************************************
  67  *           RtlNtStatusToDosError (NTDLL.@)
  68  *
  69  * Convert an NTSTATUS code to a Win32 error code.
  70  *
  71  * PARAMS
  72  *  status [I] Nt error code to map.
  73  *
  74  * RETURNS
  75  *  The mapped Win32 error code, or ERROR_MR_MID_NOT_FOUND if there is no
  76  *  mapping defined.
  77  */
  78 ULONG WINAPI RtlNtStatusToDosError( NTSTATUS status )
  79 {
  80     NtCurrentTeb()->LastStatusValue = status;
  81     return RtlNtStatusToDosErrorNoTeb( status );
  82 }
  83
  84 /**********************************************************************
  85  *      RtlGetLastNtStatus (NTDLL.@)
  86  *
  87  * Get the current per-thread status.
  88  */
  89 NTSTATUS WINAPI RtlGetLastNtStatus(void)
  90 {
  91     return NtCurrentTeb()->LastStatusValue;
  92 }
  93
  94 /**********************************************************************
  95  *      RtlGetLastWin32Error (NTDLL.@)
  96  *
  97  * Get the current per-thread error value set by a system function or the user.
  98  *
  99  * PARAMS
 100  *  None.
 101  *
 102  * RETURNS
 103  *  The current error value for the thread, as set by SetLastWin32Error() or SetLastError().
 104  */
 105 DWORD WINAPI RtlGetLastWin32Error(void)
 106 {
 107     return NtCurrentTeb()->LastErrorValue;
 108 }
 109
 110 /***********************************************************************
 111  *      RtlSetLastWin32Error (NTDLL.@)
 112  *      RtlRestoreLastWin32Error (NTDLL.@)
 113  *
 114  * Set the per-thread error value.
 115  *
 116  * PARAMS
 117  *  err [I] The new error value to set
 118  *
 119  * RETURNS
 120  *  Nothing.
 121  */
 122 void WINAPI RtlSetLastWin32Error( DWORD err )
 123 {
 124     NtCurrentTeb()->LastErrorValue = err;
 125 }
 126
 127 /***********************************************************************
 128  *      RtlSetLastWin32ErrorAndNtStatusFromNtStatus (NTDLL.@)
 129  *
 130  * Set the per-thread status and error values.
 131  *
 132  * PARAMS
 133  *  err [I] The new status value to set
 134  *
 135  * RETURNS
 136  *  Nothing.
 137  */
 138 void WINAPI RtlSetLastWin32ErrorAndNtStatusFromNtStatus( NTSTATUS status )
 139 {
 140     NtCurrentTeb()->LastErrorValue = RtlNtStatusToDosError( status );
 141 }