reactos/ntoskrnl/rtl/nls.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/rtl/nls.c
   5  * PURPOSE:         Bitmap functions
   6  *
   7  * PROGRAMMERS:     Eric Kohl
   8  */
   9
  10 #include <ntoskrnl.h>
  11 #define NDEBUG
  12 #include <internal/debug.h>
  13
  14
  15 /* GLOBALS *******************************************************************/
  16
  17
  18 static PUSHORT NlsAnsiCodePageTable = NULL;
  19 static ULONG NlsAnsiCodePageTableSize = 0;
  20
  21 static PUSHORT NlsOemCodePageTable = NULL;
  22 static ULONG NlsOemCodePageTableSize = 0;
  23
  24 static PUSHORT NlsUnicodeCasemapTable = NULL;
  25 static ULONG NlsUnicodeCasemapTableSize = 0;
  26
  27 PSECTION_OBJECT NlsSectionObject = NULL;
  28 static PVOID NlsSectionBase = NULL;
  29 static ULONG NlsSectionViewSize = 0;
  30
  31 ULONG NlsAnsiTableOffset = 0;
  32 ULONG NlsOemTableOffset = 0;
  33 ULONG NlsUnicodeTableOffset = 0;
  34
  35
  36 /* FUNCTIONS *****************************************************************/
  37
  38 VOID
  39 INIT_FUNCTION
  40 STDCALL
  41 RtlpInitNls(VOID)
  42 {
  43     ULONG_PTR BaseAddress;
  44
  45     /* Import NLS Data */
  46     BaseAddress = CachedModules[AnsiCodepage]->ModStart;
  47     RtlpImportAnsiCodePage((PUSHORT)BaseAddress,
  48                            CachedModules[AnsiCodepage]->ModEnd - BaseAddress);
  49
  50     BaseAddress = CachedModules[OemCodepage]->ModStart;
  51     RtlpImportOemCodePage((PUSHORT)BaseAddress,
  52                           CachedModules[OemCodepage]->ModEnd - BaseAddress);
  53
  54     BaseAddress = CachedModules[UnicodeCasemap]->ModStart;
  55     RtlpImportUnicodeCasemap((PUSHORT)BaseAddress,
  56                              CachedModules[UnicodeCasemap]->ModEnd - BaseAddress);
  57
  58     /* Create initial NLS tables */
  59     RtlpCreateInitialNlsTables();
  60
  61     /* Create the NLS section */
  62     RtlpCreateNlsSection();
  63 }
  64
  65 VOID INIT_FUNCTION
  66 RtlpImportAnsiCodePage(PUSHORT TableBase,
  67              ULONG Size)
  68 {
  69   NlsAnsiCodePageTable = TableBase;
  70   NlsAnsiCodePageTableSize = Size;
  71 }
  72
  73
  74 VOID INIT_FUNCTION
  75 RtlpImportOemCodePage(PUSHORT TableBase,
  76             ULONG Size)
  77 {
  78   NlsOemCodePageTable = TableBase;
  79   NlsOemCodePageTableSize = Size;
  80 }
  81
  82
  83 VOID INIT_FUNCTION
  84 RtlpImportUnicodeCasemap(PUSHORT TableBase,
  85           ULONG Size)
  86 {
  87   NlsUnicodeCasemapTable = TableBase;
  88   NlsUnicodeCasemapTableSize = Size;
  89 }
  90
  91
  92 VOID INIT_FUNCTION
  93 RtlpCreateInitialNlsTables(VOID)
  94 {
  95   NLSTABLEINFO NlsTable;
  96
  97   if (NlsAnsiCodePageTable == NULL || NlsAnsiCodePageTableSize == 0 ||
  98       NlsOemCodePageTable == NULL || NlsOemCodePageTableSize == 0 ||
  99       NlsUnicodeCasemapTable == NULL || NlsUnicodeCasemapTableSize == 0)
 100     {
 101       KEBUGCHECKEX (0x32, STATUS_UNSUCCESSFUL, 1, 0, 0);
 102     }
 103
 104   RtlInitNlsTables (NlsAnsiCodePageTable,
 105           NlsOemCodePageTable,
 106           NlsUnicodeCasemapTable,
 107           &NlsTable);
 108
 109   RtlResetRtlTranslations (&NlsTable);
 110 }
 111
 112
 113 VOID INIT_FUNCTION
 114 RtlpCreateNlsSection(VOID)
 115 {
 116   NLSTABLEINFO NlsTable;
 117   LARGE_INTEGER SectionSize;
 118   NTSTATUS Status;
 119
 120   DPRINT("RtlpCreateNlsSection() called\n");
 121
 122   NlsSectionViewSize = ROUND_UP(NlsAnsiCodePageTableSize, PAGE_SIZE) +
 123              ROUND_UP(NlsOemCodePageTableSize, PAGE_SIZE) +
 124              ROUND_UP(NlsUnicodeCasemapTableSize, PAGE_SIZE);
 125
 126   DPRINT("NlsSectionViewSize %lx\n", NlsSectionViewSize);
 127
 128   SectionSize.QuadPart = (LONGLONG)NlsSectionViewSize;
 129   Status = MmCreateSection(&NlsSectionObject,
 130             SECTION_ALL_ACCESS,
 131             NULL,
 132             &SectionSize,
 133             PAGE_READWRITE,
 134             SEC_COMMIT,
 135             NULL,
 136             NULL);
 137   if (!NT_SUCCESS(Status))
 138     {
 139       DPRINT1("MmCreateSection() failed\n");
 140       KEBUGCHECKEX(0x32, Status, 1, 1, 0);
 141     }
 142
 143   Status = MmMapViewInSystemSpace(NlsSectionObject,
 144               &NlsSectionBase,
 145               &NlsSectionViewSize);
 146   if (!NT_SUCCESS(Status))
 147     {
 148       DPRINT1("MmMapViewInSystemSpace() failed\n");
 149       KEBUGCHECKEX(0x32, Status, 1, 3, 0);
 150     }
 151
 152   DPRINT("NlsSection: Base %p  Size %lx\n",
 153     NlsSectionBase,
 154     NlsSectionViewSize);
 155
 156   NlsAnsiTableOffset = 0;
 157   RtlCopyMemory((PVOID)((ULONG)NlsSectionBase + NlsAnsiTableOffset),
 158       NlsAnsiCodePageTable,
 159       NlsAnsiCodePageTableSize);
 160
 161   NlsOemTableOffset = NlsAnsiTableOffset + ROUND_UP(NlsAnsiCodePageTableSize, PAGE_SIZE);
 162   RtlCopyMemory((PVOID)((ULONG)NlsSectionBase + NlsOemTableOffset),
 163       NlsOemCodePageTable,
 164       NlsOemCodePageTableSize);
 165
 166   NlsUnicodeTableOffset = NlsOemTableOffset + ROUND_UP(NlsOemCodePageTableSize, PAGE_SIZE);
 167   RtlCopyMemory((PVOID)((ULONG)NlsSectionBase + NlsUnicodeTableOffset),
 168       NlsUnicodeCasemapTable,
 169       NlsUnicodeCasemapTableSize);
 170
 171   RtlInitNlsTables ((PVOID)((ULONG)NlsSectionBase + NlsAnsiTableOffset),
 172           (PVOID)((ULONG)NlsSectionBase + NlsOemTableOffset),
 173           (PVOID)((ULONG)NlsSectionBase + NlsUnicodeTableOffset),
 174           &NlsTable);
 175
 176   RtlResetRtlTranslations (&NlsTable);
 177 }