reactos/lib/cmlib/cminit.c

   1 /*
   2  * PROJECT:   registry manipulation library
   3  * LICENSE:   GPL - See COPYING in the top level directory
   4  * COPYRIGHT: Copyright 2005 Filip Navara <navaraf@reactos.org>
   5  *            Copyright 2001 - 2005 Eric Kohl
   6  */
   7
   8 #include "cmlib.h"
   9
  10 BOOLEAN CMAPI
  11 CmCreateRootNode(
  12    PHHIVE Hive,
  13    PCWSTR Name)
  14 {
  15    PCM_KEY_NODE KeyCell;
  16    HCELL_INDEX RootCellIndex;
  17    SIZE_T NameSize;
  18
  19    /* Allocate the cell */
  20    NameSize = wcslen(Name) * sizeof(WCHAR);
  21    RootCellIndex = HvAllocateCell(Hive,
  22                                   FIELD_OFFSET(CM_KEY_NODE, Name) + NameSize,
  23                                   Stable,
  24                                   HCELL_NIL);
  25    if (RootCellIndex == HCELL_NIL) return FALSE;
  26
  27    /* Seutp the base block */
  28    Hive->BaseBlock->RootCell = RootCellIndex;
  29    Hive->BaseBlock->CheckSum = HvpHiveHeaderChecksum(Hive->BaseBlock);
  30
  31    /* Get the key cell */
  32    KeyCell = (PCM_KEY_NODE)HvGetCell(Hive, RootCellIndex);
  33    if (!KeyCell) return FALSE;
  34
  35    /* Setup the cell */
  36    KeyCell->Signature = (USHORT)CM_KEY_NODE_SIGNATURE;
  37    KeyCell->Flags = KEY_HIVE_ENTRY | KEY_NO_DELETE;
  38    KeyCell->LastWriteTime.QuadPart = 0;
  39    KeyCell->Parent = HCELL_NIL;
  40    KeyCell->SubKeyCounts[Stable] = 0;
  41    KeyCell->SubKeyCounts[Volatile] = 0;
  42    KeyCell->SubKeyLists[Stable] = HCELL_NIL;
  43    KeyCell->SubKeyLists[Volatile] = HCELL_NIL;
  44    KeyCell->ValueList.Count = 0;
  45    KeyCell->ValueList.List = HCELL_NIL;
  46    KeyCell->Security = HCELL_NIL;
  47    KeyCell->Class = HCELL_NIL;
  48    KeyCell->ClassLength = 0;
  49    KeyCell->MaxNameLen = 0;
  50    KeyCell->MaxClassLen = 0;
  51    KeyCell->MaxValueNameLen = 0;
  52    KeyCell->MaxValueDataLen = 0;
  53
  54    /* Write the name */
  55    KeyCell->NameLength = (USHORT)NameSize;
  56    memcpy(KeyCell->Name, Name, NameSize);
  57
  58    /* Return success */
  59    HvReleaseCell(Hive, RootCellIndex);
  60    return TRUE;
  61 }
  62
  63 static VOID CMAPI
  64 CmpPrepareKey(
  65    PHHIVE RegistryHive,
  66    PCM_KEY_NODE KeyCell)
  67 {
  68    PCM_KEY_NODE SubKeyCell;
  69    PCM_KEY_FAST_INDEX HashCell;
  70    ULONG i;
  71
  72    ASSERT(KeyCell->Signature == CM_KEY_NODE_SIGNATURE);
  73
  74    KeyCell->SubKeyLists[Volatile] = HCELL_NIL;
  75    KeyCell->SubKeyCounts[Volatile] = 0;
  76
  77    /* Enumerate and add subkeys */
  78    if (KeyCell->SubKeyCounts[Stable] > 0)
  79    {
  80       HashCell = HvGetCell(RegistryHive, KeyCell->SubKeyLists[Stable]);
  81
  82       for (i = 0; i < KeyCell->SubKeyCounts[Stable]; i++)
  83       {
  84          SubKeyCell = HvGetCell(RegistryHive, HashCell->List[i].Cell);
  85          CmpPrepareKey(RegistryHive, SubKeyCell);
  86       }
  87    }
  88 }
  89
  90 VOID CMAPI
  91 CmPrepareHive(
  92    PHHIVE RegistryHive)
  93 {
  94    PCM_KEY_NODE RootCell;
  95
  96    RootCell = HvGetCell(RegistryHive, RegistryHive->BaseBlock->RootCell);
  97    CmpPrepareKey(RegistryHive, RootCell);
  98 }