[fireball] 30028: - Update cached KCB values when necessary. - Update Node Maximum values when necessary. - Return data from the node instead of calling 3rd-party functions to loop around the entire key until they find something appropriate. - Get rid of CmiScanForSubKey, CmiGetMaxValueDataLength, CmiGetMaxValueNameLength, CmiGetMaxClassLength, CmiGetMaxNameLength.

Author: fireball
Date: Thu Nov  1 01:33:43 2007
New Revision: 30028

URL: http://svn.reactos.org/svn/reactos?rev=30028&view=rev
Log:
- Update cached KCB values when necessary.
- Update Node Maximum values when necessary.
- Return data from the node instead of calling 3rd-party functions to loop around the
entire key until they find something appropriate.
- Get rid of CmiScanForSubKey, CmiGetMaxValueDataLength, CmiGetMaxValueNameLength,
CmiGetMaxClassLength, CmiGetMaxNameLength.

Modified:
    trunk/reactos/ntoskrnl/cm/regfile.c
    trunk/reactos/ntoskrnl/config/cmapi.c

Modified: trunk/reactos/ntoskrnl/cm/regfile.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/cm/regfile.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/cm/regfile.c (original)
+++ trunk/reactos/ntoskrnl/cm/regfile.c Thu Nov  1 01:33:43 2007
@@ -101,157 +101,6 @@
     return Success ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL;
 }
 
-ULONG
-CmiGetMaxNameLength(PHHIVE Hive,
-                    PCM_KEY_NODE KeyCell)
-{
-    PCM_KEY_FAST_INDEX HashBlock;
-    PCM_KEY_NODE CurSubKeyCell;
-    ULONG MaxName;
-    ULONG NameLength;
-    ULONG i;
-    ULONG Storage;
-
-    MaxName = 0;
-    for (Storage = Stable; Storage < HTYPE_COUNT; Storage++)
-    {
-        if (KeyCell->SubKeyLists[Storage] != HCELL_NIL)
-        {
-            HashBlock = (PCM_KEY_FAST_INDEX)HvGetCell (Hive,
KeyCell->SubKeyLists[Storage]);
-            ASSERT(HashBlock->Signature == CM_KEY_FAST_LEAF);
-
-            for (i = 0; i < KeyCell->SubKeyCounts[Storage]; i++)
-            {
-                CurSubKeyCell = (PCM_KEY_NODE)HvGetCell (Hive,
-                                           HashBlock->List[i].Cell);
-                NameLength = CurSubKeyCell->NameLength;
-                if (CurSubKeyCell->Flags & KEY_COMP_NAME)
-                    NameLength *= sizeof(WCHAR);
-                if (NameLength > MaxName)
-                    MaxName = NameLength;
-            }
-        }
-    }
-
-    DPRINT ("MaxName %lu\n", MaxName);
-
-    return MaxName;
-}
-
-ULONG
-CmiGetMaxClassLength(PHHIVE Hive,
-                     PCM_KEY_NODE KeyCell)
-{
-    PCM_KEY_FAST_INDEX HashBlock;
-    PCM_KEY_NODE CurSubKeyCell;
-    ULONG MaxClass;
-    ULONG i;
-    ULONG Storage;
-
-    MaxClass = 0;
-    for (Storage = Stable; Storage < HTYPE_COUNT; Storage++)
-    {
-        if (KeyCell->SubKeyLists[Storage] != HCELL_NIL)
-        {
-            HashBlock = (PCM_KEY_FAST_INDEX)HvGetCell (Hive,
-                                   KeyCell->SubKeyLists[Storage]);
-            ASSERT(HashBlock->Signature == CM_KEY_FAST_LEAF);
-
-            for (i = 0; i < KeyCell->SubKeyCounts[Storage]; i++)
-            {
-                CurSubKeyCell = (PCM_KEY_NODE)HvGetCell (Hive,
-                                           HashBlock->List[i].Cell);
-
-                if (MaxClass < CurSubKeyCell->ClassLength)
-                {
-                    MaxClass = CurSubKeyCell->ClassLength;
-                }
-            }
-        }
-    }
-
-    return MaxClass;
-}
-
-ULONG
-CmiGetMaxValueNameLength(PHHIVE Hive,
-                         PCM_KEY_NODE KeyCell)
-{
-    PVALUE_LIST_CELL ValueListCell;
-    PCM_KEY_VALUE CurValueCell;
-    ULONG MaxValueName;
-    ULONG Size;
-    ULONG i;
-
-    VERIFY_KEY_CELL(KeyCell);
-
-    if (KeyCell->ValueList.List == HCELL_NIL)
-    {
-        return 0;
-    }
-
-    MaxValueName = 0;
-    ValueListCell = (PVALUE_LIST_CELL)HvGetCell (Hive,
-                               KeyCell->ValueList.List);
-
-    for (i = 0; i < KeyCell->ValueList.Count; i++)
-    {
-        CurValueCell = (PCM_KEY_VALUE)HvGetCell (Hive,
-                                  ValueListCell->ValueOffset[i]);
-        if (CurValueCell == NULL)
-        {
-            DPRINT("CmiGetBlock() failed\n");
-        }
-
-        if (CurValueCell != NULL)
-        {
-            Size = CurValueCell->NameLength;
-            if (CurValueCell->Flags & VALUE_COMP_NAME)
-            {
-                Size *= sizeof(WCHAR);
-            }
-            if (MaxValueName < Size)
-            {
-                MaxValueName = Size;
-            }
-        }
-    }
-
-    return MaxValueName;
-}
-
-ULONG
-CmiGetMaxValueDataLength(PHHIVE Hive,
-                         PCM_KEY_NODE KeyCell)
-{
-    PVALUE_LIST_CELL ValueListCell;
-    PCM_KEY_VALUE CurValueCell;
-    LONG MaxValueData;
-    ULONG i;
-
-    VERIFY_KEY_CELL(KeyCell);
-
-    if (KeyCell->ValueList.List == HCELL_NIL)
-    {
-        return 0;
-    }
-
-    MaxValueData = 0;
-    ValueListCell = (PVALUE_LIST_CELL)HvGetCell (Hive, KeyCell->ValueList.List);
-
-    for (i = 0; i < KeyCell->ValueList.Count; i++)
-    {
-        CurValueCell = (PCM_KEY_VALUE)HvGetCell (Hive,
-                                  ValueListCell->ValueOffset[i]);
-        if ((MaxValueData < (LONG)(CurValueCell->DataLength &
REG_DATA_SIZE_MASK)))
-        {
-            MaxValueData = CurValueCell->DataLength & REG_DATA_SIZE_MASK;
-        }
-    }
-
-    return MaxValueData;
-}
-
 NTSTATUS
 CmiScanKeyForValue(IN PCMHIVE RegistryHive,
                    IN PCM_KEY_NODE KeyCell,
@@ -275,28 +124,4 @@
     return STATUS_SUCCESS;
 }
 
-NTSTATUS
-CmiScanForSubKey(IN PCMHIVE RegistryHive,
-                 IN PCM_KEY_NODE KeyCell,
-                 OUT PCM_KEY_NODE *SubKeyCell,
-                 OUT HCELL_INDEX *BlockOffset,
-                 IN PCUNICODE_STRING KeyName,
-                 IN ACCESS_MASK DesiredAccess,
-                 IN ULONG Attributes)
-{
-    HCELL_INDEX CellIndex;
-
-    /* Assume failure */
-    *SubKeyCell = NULL;
-
-    /* Call newer Cm API */
-    CellIndex = CmpFindSubKeyByName(&RegistryHive->Hive, KeyCell, KeyName);
-    if (CellIndex == HCELL_NIL) return STATUS_OBJECT_NAME_NOT_FOUND;
-
-    /* Otherwise, get the cell data back too */
-    *BlockOffset = CellIndex;
-    *SubKeyCell = (PCM_KEY_NODE)HvGetCell(&RegistryHive->Hive, CellIndex);
-    return STATUS_SUCCESS;
-}
-
 /* EOF */

Modified: trunk/reactos/ntoskrnl/config/cmapi.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/config/cmapi.c?re…
==============================================================================
--- trunk/reactos/ntoskrnl/config/cmapi.c (original)
+++ trunk/reactos/ntoskrnl/config/cmapi.c Thu Nov  1 01:33:43 2007
@@ -331,8 +331,23 @@
 Quickie:
     if (NT_SUCCESS(Status))
     {
+        ASSERT(Parent->MaxValueNameLen == Kcb->KcbMaxValueNameLen);
+        if (Parent->MaxValueNameLen < ValueName->Length)
+        {
+            Parent->MaxValueNameLen = ValueName->Length;
+            Kcb->KcbMaxValueNameLen = ValueName->Length;
+        }
+        
+        ASSERT(Parent->MaxValueDataLen == Kcb->KcbMaxValueDataLen);
+        if (Parent->MaxValueDataLen < DataLength)
+        {
+            Parent->MaxValueDataLen = DataLength;
+            Kcb->KcbMaxValueDataLen = Parent->MaxValueDataLen;
+        }
+        
         /* Save the write time */
         KeQuerySystemTime(&Parent->LastWriteTime);
+        KeQuerySystemTime(&Kcb->KcbLastWriteTime);
     }
 
     /* Release the lock */
@@ -422,8 +437,11 @@
 
         /* Set the last write time */
         KeQuerySystemTime(&Parent->LastWriteTime);
+        KeQuerySystemTime(&Kcb->KcbLastWriteTime);
 
         /* Sanity check */
+        ASSERT(Parent->MaxValueNameLen == Kcb->KcbMaxValueNameLen);
+        ASSERT(Parent->MaxValueDataLen == Kcb->KcbMaxValueDataLen);
         ASSERT(HvIsCellDirty(Hive, Cell));
 
         /* Check if the value list is empty now */
@@ -432,6 +450,8 @@
             /* Then clear key node data */
             Parent->MaxValueNameLen = 0;
             Parent->MaxValueDataLen = 0;
+            Kcb->KcbMaxValueNameLen = 0;
+            Kcb->KcbMaxValueDataLen = 0;
         }
 
         /* Change default Status to success */
@@ -811,19 +831,10 @@
             Info->KeyFullInformation.SubKeys = Node->SubKeyCounts[Stable] +
                                                Node->SubKeyCounts[Volatile];
             Info->KeyFullInformation.Values = Node->ValueList.Count;
-            Info->KeyFullInformation.MaxNameLen = CmiGetMaxNameLength(Hive, Node);
-            Info->KeyFullInformation.MaxClassLen = CmiGetMaxClassLength(Hive, Node);
-            Info->KeyFullInformation.MaxValueNameLen = CmiGetMaxValueNameLength(Hive,
Node);
-            Info->KeyFullInformation.MaxValueDataLen = CmiGetMaxValueDataLength(Hive,
Node);
-            DPRINT("%d %d %d %d\n",
-                   CmiGetMaxNameLength(Hive, Node),
-                   CmiGetMaxValueDataLength(Hive, Node),
-                   CmiGetMaxValueNameLength(Hive, Node),
-                   CmiGetMaxClassLength(Hive, Node));
-            //Info->KeyFullInformation.MaxNameLen = Node->MaxNameLen;
-            //Info->KeyFullInformation.MaxClassLen = Node->MaxClassLen;
-            //Info->KeyFullInformation.MaxValueNameLen = Node->MaxValueNameLen;
-            //Info->KeyFullInformation.MaxValueDataLen = Node->MaxValueDataLen;
+            Info->KeyFullInformation.MaxNameLen = Node->MaxNameLen;
+            Info->KeyFullInformation.MaxClassLen = Node->MaxClassLen;
+            Info->KeyFullInformation.MaxValueNameLen = Node->MaxValueNameLen;
+            Info->KeyFullInformation.MaxValueDataLen = Node->MaxValueDataLen;      
     
 
             /* Check if we have a class */
             if (Node->ClassLength > 0)