reactos/ntoskrnl/rtl/nls.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/rtl/nls.c
   6  * PURPOSE:         Bitmap functions
   7  * UPDATE HISTORY:
   8  *                  20/08/99 Created by Eric Kohl
   9  */
  10
  11 #include <ntoskrnl.h>
  12 #define NDEBUG
  13 #include <internal/debug.h>
  14
  15
  16 /* GLOBALS *******************************************************************/
  17
  18
  19 static PUSHORT NlsAnsiCodePageTable = NULL;
  20 static ULONG NlsAnsiCodePageTableSize = 0;
  21
  22 static PUSHORT NlsOemCodePageTable = NULL;
  23 static ULONG NlsOemCodePageTableSize = 0;
  24
  25 static PUSHORT NlsUnicodeCasemapTable = NULL;
  26 static ULONG NlsUnicodeCasemapTableSize = 0;
  27
  28 PSECTION_OBJECT NlsSectionObject = NULL;
  29 static PVOID NlsSectionBase = NULL;
  30 static ULONG NlsSectionViewSize = 0;
  31
  32 ULONG NlsAnsiTableOffset = 0;
  33 ULONG NlsOemTableOffset = 0;
  34 ULONG NlsUnicodeTableOffset = 0;
  35
  36
  37 /* FUNCTIONS *****************************************************************/
  38
  39
  40
  41 VOID INIT_FUNCTION
  42 RtlpImportAnsiCodePage(PUSHORT TableBase,
  43              ULONG Size)
  44 {
  45   NlsAnsiCodePageTable = TableBase;
  46   NlsAnsiCodePageTableSize = Size;
  47 }
  48
  49
  50 VOID INIT_FUNCTION
  51 RtlpImportOemCodePage(PUSHORT TableBase,
  52             ULONG Size)
  53 {
  54   NlsOemCodePageTable = TableBase;
  55   NlsOemCodePageTableSize = Size;
  56 }
  57
  58
  59 VOID INIT_FUNCTION
  60 RtlpImportUnicodeCasemap(PUSHORT TableBase,
  61           ULONG Size)
  62 {
  63   NlsUnicodeCasemapTable = TableBase;
  64   NlsUnicodeCasemapTableSize = Size;
  65 }
  66
  67
  68 VOID INIT_FUNCTION
  69 RtlpCreateInitialNlsTables(VOID)
  70 {
  71   NLSTABLEINFO NlsTable;
  72
  73   if (NlsAnsiCodePageTable == NULL || NlsAnsiCodePageTableSize == 0 ||
  74       NlsOemCodePageTable == NULL || NlsOemCodePageTableSize == 0 ||
  75       NlsUnicodeCasemapTable == NULL || NlsUnicodeCasemapTableSize == 0)
  76     {
  77       KEBUGCHECKEX (0x32, STATUS_UNSUCCESSFUL, 1, 0, 0);
  78     }
  79
  80   RtlInitNlsTables (NlsAnsiCodePageTable,
  81           NlsOemCodePageTable,
  82           NlsUnicodeCasemapTable,
  83           &NlsTable);
  84
  85   RtlResetRtlTranslations (&NlsTable);
  86 }
  87
  88
  89 VOID INIT_FUNCTION
  90 RtlpCreateNlsSection(VOID)
  91 {
  92   NLSTABLEINFO NlsTable;
  93   LARGE_INTEGER SectionSize;
  94   NTSTATUS Status;
  95
  96   DPRINT("RtlpCreateNlsSection() called\n");
  97
  98   NlsSectionViewSize = ROUND_UP(NlsAnsiCodePageTableSize, PAGE_SIZE) +
  99              ROUND_UP(NlsOemCodePageTableSize, PAGE_SIZE) +
 100              ROUND_UP(NlsUnicodeCasemapTableSize, PAGE_SIZE);
 101
 102   DPRINT("NlsSectionViewSize %lx\n", NlsSectionViewSize);
 103
 104   SectionSize.QuadPart = (LONGLONG)NlsSectionViewSize;
 105   Status = MmCreateSection(&NlsSectionObject,
 106             SECTION_ALL_ACCESS,
 107             NULL,
 108             &SectionSize,
 109             PAGE_READWRITE,
 110             SEC_COMMIT,
 111             NULL,
 112             NULL);
 113   if (!NT_SUCCESS(Status))
 114     {
 115       DPRINT1("MmCreateSection() failed\n");
 116       KEBUGCHECKEX(0x32, Status, 1, 1, 0);
 117     }
 118
 119   Status = MmMapViewInSystemSpace(NlsSectionObject,
 120               &NlsSectionBase,
 121               &NlsSectionViewSize);
 122   if (!NT_SUCCESS(Status))
 123     {
 124       DPRINT1("MmMapViewInSystemSpace() failed\n");
 125       KEBUGCHECKEX(0x32, Status, 1, 3, 0);
 126     }
 127
 128   DPRINT("NlsSection: Base %p  Size %lx\n",
 129     NlsSectionBase,
 130     NlsSectionViewSize);
 131
 132   NlsAnsiTableOffset = 0;
 133   RtlCopyMemory((PVOID)((ULONG)NlsSectionBase + NlsAnsiTableOffset),
 134       NlsAnsiCodePageTable,
 135       NlsAnsiCodePageTableSize);
 136
 137   NlsOemTableOffset = NlsAnsiTableOffset + ROUND_UP(NlsAnsiCodePageTableSize, PAGE_SIZE);
 138   RtlCopyMemory((PVOID)((ULONG)NlsSectionBase + NlsOemTableOffset),
 139       NlsOemCodePageTable,
 140       NlsOemCodePageTableSize);
 141
 142   NlsUnicodeTableOffset = NlsOemTableOffset + ROUND_UP(NlsOemCodePageTableSize, PAGE_SIZE);
 143   RtlCopyMemory((PVOID)((ULONG)NlsSectionBase + NlsUnicodeTableOffset),
 144       NlsUnicodeCasemapTable,
 145       NlsUnicodeCasemapTableSize);
 146
 147   RtlInitNlsTables ((PVOID)((ULONG)NlsSectionBase + NlsAnsiTableOffset),
 148           (PVOID)((ULONG)NlsSectionBase + NlsOemTableOffset),
 149           (PVOID)((ULONG)NlsSectionBase + NlsUnicodeTableOffset),
 150           &NlsTable);
 151
 152   RtlResetRtlTranslations (&NlsTable);
 153 }