[ros-diffs] [pschweitzer] 50874: [NTOSKRNL] Reverted changes commited to largemcb.c They weren't intended to be commited

Author: pschweitzer
Date: Wed Feb 23 12:08:16 2011
New Revision: 50874

URL: http://svn.reactos.org/svn/reactos?rev=50874&view=rev
Log:
[NTOSKRNL]
Reverted changes commited to largemcb.c
They weren't intended to be commited

Modified:
    trunk/reactos/ntoskrnl/fsrtl/largemcb.c

Modified: trunk/reactos/ntoskrnl/fsrtl/largemcb.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/fsrtl/largemcb.c?…
==============================================================================
--- trunk/reactos/ntoskrnl/fsrtl/largemcb.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/fsrtl/largemcb.c [iso-8859-1] Wed Feb 23 12:08:16 2011
@@ -2,10 +2,8 @@
  * PROJECT:         ReactOS Kernel
  * LICENSE:         GPL - See COPYING in the top level directory
  * FILE:            ntoskrnl/fsrtl/largemcb.c
- * PURPOSE:         Large Mapped Control Block (MCB) support for File System Drivers
+ * PURPOSE:         Mapping Control Block (MCB) support for File System Drivers
  * PROGRAMMERS:     Alex Ionescu (alex.ionescu(a)reactos.org)
- *                  Pierre Schweitzer (heis_spiter(a)hotmail.com) 
- *                  Art Yerkes (art.yerkes(a)gmail.com)
  */
 
 /* INCLUDES ******************************************************************/
@@ -14,158 +12,10 @@
 #define NDEBUG
 #include <debug.h>
 
-/* GLOBALS *******************************************************************/
-
-#define GET_LIST_HEAD(x) ((PLIST_ENTRY)(&((PRTL_GENERIC_TABLE)x)[1]))
-
-PAGED_LOOKASIDE_LIST FsRtlFirstMappingLookasideList;
-NPAGED_LOOKASIDE_LIST FsRtlFastMutexLookasideList;
-
-typedef struct _LARGE_MCB_MAPPING_ENTRY
-{
-	LARGE_INTEGER RunStartVbn;
-	LARGE_INTEGER SectorCount;
-	LARGE_INTEGER StartingLbn;
-	LIST_ENTRY Sequence;
-} LARGE_MCB_MAPPING_ENTRY, *PLARGE_MCB_MAPPING_ENTRY;
-
-static VOID McbPrintTree(PBASE_MCB Mcb)
-{
-	PLARGE_MCB_MAPPING_ENTRY Entry;
-	for (Entry = (PLARGE_MCB_MAPPING_ENTRY)
-			 RtlEnumerateGenericTable(Mcb->Mapping, TRUE);
-		 Entry;
-		 Entry = (PLARGE_MCB_MAPPING_ENTRY)
-			 RtlEnumerateGenericTable(Mcb->Mapping, FALSE))
-	{
-		DPRINT1
-			("Vbn %x Lbn %x Count %x\n", 
-			 Entry->RunStartVbn.LowPart,
-			 Entry->StartingLbn.LowPart,
-			 Entry->SectorCount.LowPart);
-	}
-}
-
-static PVOID NTAPI McbMappingAllocate(PRTL_GENERIC_TABLE Table, CLONG Bytes)
-{
-	PVOID Result;
-	PBASE_MCB Mcb = (PBASE_MCB)Table->TableContext;
-	Result = ExAllocatePoolWithTag(Mcb->PoolType, Bytes, 'LMCB');
-	DPRINT("McbMappingAllocate(%d) => %p\n", Bytes, Result);
-	return Result;
-}
-
-static VOID NTAPI McbMappingFree(PRTL_GENERIC_TABLE Table, PVOID Buffer)
-{
-	DPRINT("McbMappingFree(%p)\n", Buffer);
-	ExFreePoolWithTag(Buffer, 'LMCB');
-}
-
-static RTL_GENERIC_COMPARE_RESULTS NTAPI McbMappingCompare
-(PRTL_GENERIC_TABLE Table, PVOID PtrA, PVOID PtrB)
-{
-	PLARGE_MCB_MAPPING_ENTRY A = PtrA, B = PtrB;
-	RTL_GENERIC_COMPARE_RESULTS Result;
-	DPRINT("Starting to compare element %x to element %x\n", PtrA, PtrB);
-	Result = 
-		(A->RunStartVbn.QuadPart + A->SectorCount.QuadPart <=
-		 B->RunStartVbn.QuadPart) ? GenericLessThan :
-		(A->RunStartVbn.QuadPart >= 
-		 B->RunStartVbn.QuadPart + B->SectorCount.QuadPart) ? 
-		GenericGreaterThan : GenericEqual;
-	DPRINT("Compare(%x:%x): %x:%x to %x:%x => %d\n", 
-		   A,B,
-		   A->RunStartVbn.LowPart, A->SectorCount.LowPart,
-		   B->RunStartVbn.LowPart, B->SectorCount.LowPart,
-		   Result);
-	return Result;
-}
-
 /* PUBLIC FUNCTIONS **********************************************************/
 
 /*
- * @implemented
- */
-BOOLEAN
-NTAPI
-FsRtlAddBaseMcbEntry(IN PBASE_MCB Mcb,
-                     IN LONGLONG Vbn,
-                     IN LONGLONG Lbn,
-                     IN LONGLONG SectorCount)
-{
-	LARGE_MCB_MAPPING_ENTRY Node;
-	PLARGE_MCB_MAPPING_ENTRY Existing = NULL;
-	BOOLEAN NewElement = FALSE;
-
-	McbPrintTree(Mcb);
-
-	Node.RunStartVbn.QuadPart = Vbn;
-	Node.StartingLbn.QuadPart = Lbn;
-	Node.SectorCount.QuadPart = SectorCount;
-
-	DPRINT("RunStartVbn %x\n", Node.RunStartVbn.LowPart);
-	DPRINT("StartingLbn %x\n", Node.StartingLbn.LowPart);
-	DPRINT("SectorCount %x\n", Node.SectorCount.LowPart);
-
-	while (!NewElement)
-	{
-		DPRINT("Inserting %x:%x\n", Node.RunStartVbn.LowPart,
Node.SectorCount.LowPart);
-		Existing = RtlInsertElementGenericTable
-			(Mcb->Mapping, &Node, sizeof(Node), &NewElement);
-		DPRINT("Existing %x\n", Existing);
-		if (!Existing) break;
-
-		DPRINT("NewElement %d\n", NewElement);
-		if (!NewElement)
-		{
-			// We merge the existing runs
-			LARGE_INTEGER StartVbn, FinalVbn;
-			DPRINT("Existing: %x:%x\n", 
-				   Existing->RunStartVbn.LowPart, Node.SectorCount.LowPart);
-			if (Existing->RunStartVbn.QuadPart < Node.RunStartVbn.QuadPart)
-			{
-				StartVbn = Existing->RunStartVbn;
-				Node.StartingLbn = Existing->StartingLbn;
-			}
-			else
-			{
-				StartVbn = Node.RunStartVbn;
-			}
-			DPRINT("StartVbn %x\n", StartVbn.LowPart);
-			if (Existing->RunStartVbn.QuadPart + Existing->SectorCount.QuadPart >
-				Node.RunStartVbn.QuadPart + Node.SectorCount.QuadPart)
-			{
-				FinalVbn.QuadPart = 
-					Existing->RunStartVbn.QuadPart + Existing->SectorCount.QuadPart;
-			}
-			else
-			{
-				FinalVbn.QuadPart =
-					Node.RunStartVbn.QuadPart + Node.SectorCount.QuadPart;
-			}
-			DPRINT("FinalVbn %x\n", FinalVbn.LowPart);
-			Node.RunStartVbn.QuadPart = StartVbn.QuadPart;
-			Node.SectorCount.QuadPart = FinalVbn.QuadPart - StartVbn.QuadPart;
-			RemoveHeadList(&Existing->Sequence);
-			RtlDeleteElementGenericTable(Mcb->Mapping, Existing);
-			Mcb->PairCount--;
-		}
-		else
-		{
-			DPRINT("Mapping added %x\n", Existing);
-			Mcb->MaximumPairCount++;
-			Mcb->PairCount++;
-			InsertHeadList(GET_LIST_HEAD(Mcb->Mapping), &Existing->Sequence);
-		}
-	}
-
-	DPRINT("!!Existing %d\n", !!Existing);
-	McbPrintTree(Mcb);
-	return !!Existing;
-}
-
-/*
- * @implemented
+ * @unimplemented
  */
 BOOLEAN
 NTAPI
@@ -174,59 +24,30 @@
                       IN LONGLONG Lbn,
                       IN LONGLONG SectorCount)
 {
-    BOOLEAN Result;
-
-	DPRINT
-		("Mcb %x Vbn %x Lbn %x SectorCount %x\n", 
-		 Mcb, (ULONG)Vbn, (ULONG)Lbn, (ULONG)SectorCount);
-
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    Result = FsRtlAddBaseMcbEntry(&(Mcb->BaseMcb),
-                                  Vbn,
-                                  Lbn,
-                                  SectorCount);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done %d\n", Result);
-
-    return Result;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-FsRtlGetNextBaseMcbEntry(IN PBASE_MCB Mcb,
-                         IN ULONG RunIndex,
-                         OUT PLONGLONG Vbn,
-                         OUT PLONGLONG Lbn,
-                         OUT PLONGLONG SectorCount)
-{
-	ULONG i = 0;
-	BOOLEAN Result = FALSE;
-	PLARGE_MCB_MAPPING_ENTRY Entry;
-	for (Entry = (PLARGE_MCB_MAPPING_ENTRY)
-			 RtlEnumerateGenericTable(Mcb->Mapping, TRUE);
-		 Entry && i < RunIndex;
-		 Entry = (PLARGE_MCB_MAPPING_ENTRY)
-			 RtlEnumerateGenericTable(Mcb->Mapping, FALSE), i++);
-	if (Entry)
-	{
-		Result = TRUE;
-		if (Vbn)
-			*Vbn = Entry->RunStartVbn.QuadPart;
-		if (Lbn)
-			*Lbn = Entry->StartingLbn.QuadPart;
-		if (SectorCount)
-			*SectorCount = Entry->SectorCount.QuadPart;
-	}
-
-	return Result;
-}
-
-/*
- * @implemented
+    KeBugCheck(FILE_SYSTEM);
+    return FALSE;
+}
+
+/*
+ * @implemented
+ */
+BOOLEAN
+NTAPI
+FsRtlAddMcbEntry(IN PMCB Mcb,
+                 IN VBN Vbn,
+                 IN LBN Lbn,
+                 IN ULONG SectorCount)
+{
+    /* Call the newer function */
+    return FsRtlAddLargeMcbEntry(&Mcb->
+                                 DummyFieldThatSizesThisStructureCorrectly,
+                                 (LONGLONG)Vbn,
+                                 (LONGLONG)Lbn,
+                                 (LONGLONG)SectorCount);
+}
+
+/*
+ * @unimplemented
  */
 BOOLEAN
 NTAPI
@@ -236,162 +57,72 @@
                           OUT PLONGLONG Lbn,
                           OUT PLONGLONG SectorCount)
 {
-    BOOLEAN Result;
-
-	DPRINT("FsRtlGetNextLargeMcbEntry Mcb %x RunIndex %x\n", Mcb, RunIndex);
-
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    Result = FsRtlGetNextBaseMcbEntry(&(Mcb->BaseMcb),
-                                      RunIndex,
-                                      Vbn,
-                                      Lbn,
-                                      SectorCount);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done %d\n", Result);
-
-    return Result;
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlInitializeBaseMcb(IN PBASE_MCB Mcb,
-                       IN POOL_TYPE PoolType)
-{
-    Mcb->PairCount = 0;
-
-    if (PoolType == PagedPool)
-    {
-        Mcb->Mapping =
ExAllocateFromPagedLookasideList(&FsRtlFirstMappingLookasideList);
-		DPRINT("Get from lookaside list\n");
-    }
-    else
-    {
-        Mcb->Mapping = ExAllocatePoolWithTag(PoolType |
POOL_RAISE_IF_ALLOCATION_FAILURE,
-											 sizeof(RTL_GENERIC_TABLE) + sizeof(LIST_ENTRY),
-                                             'FSBC');
-		DPRINT("Allocate\n");
-    }
-
-	DPRINT("Mcb->Mapping %x\n", Mcb->Mapping);
-    Mcb->PoolType = PoolType;
-    Mcb->MaximumPairCount = MAXIMUM_PAIR_COUNT;
-	RtlInitializeGenericTable
-		(Mcb->Mapping,
-		 McbMappingCompare,
-		 McbMappingAllocate,
-		 McbMappingFree,
-		 Mcb);
-	InitializeListHead(GET_LIST_HEAD(Mcb->Mapping));
-}
-
-/*
- * @implemented
+    KeBugCheck(FILE_SYSTEM);
+    *Vbn = 0;
+    *Lbn = 0;
+    *SectorCount= 0;
+    return FALSE;
+}
+
+/*
+ * @implemented
+ */
+BOOLEAN
+NTAPI
+FsRtlGetNextMcbEntry(IN PMCB Mcb,
+                     IN ULONG RunIndex,
+                     OUT PVBN Vbn,
+                     OUT PLBN Lbn,
+                     OUT PULONG SectorCount)
+{
+    BOOLEAN Return = FALSE;
+    LONGLONG llVbn;
+    LONGLONG llLbn;
+    LONGLONG llSectorCount;
+
+    /* Call the Large version */
+    Return = FsRtlGetNextLargeMcbEntry(
+        &Mcb->DummyFieldThatSizesThisStructureCorrectly,
+        RunIndex,
+        &llVbn,
+        &llLbn,
+        &llSectorCount);
+
+    /* Return the lower 32 bits */
+    *Vbn = (ULONG)llVbn;
+    *Lbn = (ULONG)llLbn;
+    *SectorCount = (ULONG)llSectorCount;
+
+    /* And return the original value */
+    return Return;
+}
+
+/*
+ * @unimplemented
  */
 VOID
 NTAPI
 FsRtlInitializeLargeMcb(IN PLARGE_MCB Mcb,
                         IN POOL_TYPE PoolType)
 {
-    Mcb->GuardedMutex =
ExAllocateFromNPagedLookasideList(&FsRtlFastMutexLookasideList);
-
-    KeInitializeGuardedMutex(Mcb->GuardedMutex);
-
-    _SEH2_TRY
-    {
-        FsRtlInitializeBaseMcb(&(Mcb->BaseMcb), PoolType);
-    }
-    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
-    {
-        ExFreeToNPagedLookasideList(&FsRtlFastMutexLookasideList,
-                                    Mcb->GuardedMutex);
-        Mcb->GuardedMutex = NULL;
-    }
-    _SEH2_END;
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlInitializeLargeMcbs(VOID)
-{
-    /* Initialize the list for the MCB */
-    ExInitializePagedLookasideList(&FsRtlFirstMappingLookasideList,
-                                   NULL,
-                                   NULL,
-                                   POOL_RAISE_IF_ALLOCATION_FAILURE,
-								   sizeof(RTL_GENERIC_TABLE) + sizeof(LIST_ENTRY),
-                                   IFS_POOL_TAG,
-                                   0); /* FIXME: Should be 4 */
-
-    /* Initialize the list for the guarded mutex */
-    ExInitializeNPagedLookasideList(&FsRtlFastMutexLookasideList,
-                                    NULL,
-                                    NULL,
-                                    POOL_RAISE_IF_ALLOCATION_FAILURE,
-                                    sizeof(KGUARDED_MUTEX),
-                                    IFS_POOL_TAG,
-                                    0); /* FIXME: Should be 32 */
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-FsRtlLookupBaseMcbEntry(IN PBASE_MCB Mcb,
-                        IN LONGLONG Vbn,
-                        OUT PLONGLONG Lbn OPTIONAL,
-                        OUT PLONGLONG SectorCountFromLbn OPTIONAL,
-                        OUT PLONGLONG StartingLbn OPTIONAL,
-                        OUT PLONGLONG SectorCountFromStartingLbn OPTIONAL,
-                        OUT PULONG Index OPTIONAL)
-{
-	BOOLEAN Result = FALSE;
-	LARGE_MCB_MAPPING_ENTRY ToLookup;
-	PLARGE_MCB_MAPPING_ENTRY Entry;
-
-	ToLookup.RunStartVbn.QuadPart = Vbn;
-	ToLookup.SectorCount.QuadPart = 1;
-
-	Entry = RtlLookupElementGenericTable(Mcb->Mapping, &ToLookup);
-	if (!Entry)
-	{
-		// Find out if we have a following entry.  The spec says we should return
-		// found with Lbn == -1 when we're beneath the largest map.
-		ToLookup.SectorCount.QuadPart = (1ull<<62) - ToLookup.RunStartVbn.QuadPart;
-		Entry = RtlLookupElementGenericTable(Mcb->Mapping, &ToLookup);
-		if (Entry)
-		{
-			Result = TRUE;
-			if (Lbn) *Lbn = ~0ull;
-		}
-		else
-		{
-			Result = FALSE;
-		}
-	}
-	else
-	{
-		LARGE_INTEGER Offset;
-		Offset.QuadPart = Vbn - Entry->RunStartVbn.QuadPart;
-		Result = TRUE;
-		if (Lbn) *Lbn = Entry->StartingLbn.QuadPart + Offset.QuadPart;
-		if (SectorCountFromLbn) *SectorCountFromLbn = Entry->SectorCount.QuadPart -
Offset.QuadPart;
-		if (StartingLbn) *StartingLbn = Entry->StartingLbn.QuadPart;
-		if (SectorCountFromStartingLbn) *SectorCountFromStartingLbn =
Entry->SectorCount.QuadPart;
-	}
-	
-    return Result;
-}
-
-/*
- * @implemented
+    KeBugCheck(FILE_SYSTEM);
+}
+
+/*
+ * @implemented
+ */
+VOID
+NTAPI
+FsRtlInitializeMcb(IN PMCB Mcb,
+                   IN POOL_TYPE PoolType)
+{
+    /* Call the newer function */
+    FsRtlInitializeLargeMcb(&Mcb->DummyFieldThatSizesThisStructureCorrectly,
+                            PoolType);
+}
+
+/*
+ * @unimplemented
  */
 BOOLEAN
 NTAPI
@@ -403,61 +134,14 @@
                          OUT PLONGLONG SectorCountFromStartingLbn OPTIONAL,
                          OUT PULONG Index OPTIONAL)
 {
-    BOOLEAN Result;
-
-	DPRINT("FsRtlLookupLargeMcbEntry Mcb %x Vbn %x\n", Mcb, (ULONG)Vbn);
-
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    Result = FsRtlLookupBaseMcbEntry(&(Mcb->BaseMcb),
-                                     Vbn,
-                                     Lbn,
-                                     SectorCountFromLbn,
-                                     StartingLbn,
-                                     SectorCountFromStartingLbn,
-                                     Index);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done %d (%x)\n", Result, Lbn ? (ULONG)*Lbn : 0);
-
-    return Result;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-FsRtlLookupLastBaseMcbEntryAndIndex(IN PBASE_MCB OpaqueMcb,
-                                    IN OUT PLONGLONG LargeVbn,
-                                    IN OUT PLONGLONG LargeLbn,
-                                    IN OUT PULONG Index)
-{
-	ULONG i = 0;
-	BOOLEAN Result = FALSE;
-	PLIST_ENTRY ListEntry;
-	PLARGE_MCB_MAPPING_ENTRY Entry;
-	PLARGE_MCB_MAPPING_ENTRY CountEntry;
-
-	ListEntry = GET_LIST_HEAD(OpaqueMcb->Mapping);
-	if (!IsListEmpty(ListEntry))
-	{
-		Entry = CONTAINING_RECORD(ListEntry->Flink, LARGE_MCB_MAPPING_ENTRY, Sequence);
-		Result = TRUE;
-		*LargeVbn = Entry->RunStartVbn.QuadPart;
-		*LargeLbn = Entry->StartingLbn.QuadPart;
-
-		for (i = 0, CountEntry = RtlEnumerateGenericTable(OpaqueMcb->Mapping, TRUE);
-			 CountEntry != Entry;
-			 CountEntry = RtlEnumerateGenericTable(OpaqueMcb->Mapping, FALSE));
-
-		*Index = i;
-	}
-
-	return Result;
-}
-
-/*
- * @implemented
+    KeBugCheck(FILE_SYSTEM);
+    *Lbn = 0;
+    *SectorCountFromLbn = 0;
+    return FALSE;
+}
+
+/*
+ * @unimplemented
  */
 BOOLEAN
 NTAPI
@@ -466,49 +150,15 @@
                                      OUT PLONGLONG LargeLbn,
                                      OUT PULONG Index)
 {
-    BOOLEAN Result;
-
-	DPRINT("FsRtlLookupLastLargeMcbEntryAndIndex %x\n", OpaqueMcb);
-
-    KeAcquireGuardedMutex(OpaqueMcb->GuardedMutex);
-    Result = FsRtlLookupLastBaseMcbEntryAndIndex(&(OpaqueMcb->BaseMcb),
-                                                 LargeVbn,
-                                                 LargeLbn,
-                                                 Index);
-    KeReleaseGuardedMutex(OpaqueMcb->GuardedMutex);
-
-	DPRINT("Done %d\n", Result);
-
-    return Result;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-FsRtlLookupLastBaseMcbEntry(IN PBASE_MCB Mcb,
-                            OUT PLONGLONG Vbn,
-                            OUT PLONGLONG Lbn)
-{
-	BOOLEAN Result = FALSE;
-	PLIST_ENTRY ListEntry;
-	PLARGE_MCB_MAPPING_ENTRY Entry;
-
-	ListEntry = GET_LIST_HEAD(Mcb->Mapping);
-	if (!IsListEmpty(ListEntry))
-	{
-		Entry = CONTAINING_RECORD(ListEntry->Flink, LARGE_MCB_MAPPING_ENTRY, Sequence);
-		Result = TRUE;
-		*Vbn = Entry->RunStartVbn.QuadPart;
-		*Lbn = Entry->StartingLbn.QuadPart;
-	}
-	
-	return Result;
-}
-
-/*
- * @implemented
+    KeBugCheck(FILE_SYSTEM);
+    *LargeVbn = 0;
+    *LargeLbn = 0;
+    *Index = 0;
+    return FALSE;
+}
+
+/*
+ * @unimplemented
  */
 BOOLEAN
 NTAPI
@@ -516,501 +166,8 @@
                              OUT PLONGLONG Vbn,
                              OUT PLONGLONG Lbn)
 {
-    BOOLEAN Result;
-
-	DPRINT("FsRtlLookupLastLargeMcbEntry Mcb %x\n", Mcb);
-
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    Result = FsRtlLookupLastBaseMcbEntry(&(Mcb->BaseMcb),
-                                         Vbn,
-                                         Lbn);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done %d\n", Result);
-
-    return Result;
-}
-
-/*
- * @implemented
- */
-ULONG
-NTAPI
-FsRtlNumberOfRunsInBaseMcb(IN PBASE_MCB Mcb)
-{
-    /* Return the count */
-    return Mcb->PairCount;
-}
-
-/*
- * @implemented
- */
-ULONG
-NTAPI
-FsRtlNumberOfRunsInLargeMcb(IN PLARGE_MCB Mcb)
-{
-    ULONG NumberOfRuns;
-
-	DPRINT("FsRtlNumberOfRunsInLargeMcb Mcb %x\n", Mcb);
-
-    /* Read the number of runs while holding the MCB lock */
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    NumberOfRuns = Mcb->BaseMcb.PairCount;
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done %d\n", NumberOfRuns);
-
-    /* Return the count */
-    return NumberOfRuns;
-}
-
-/*
- * @unimplemented
- */
-VOID
-NTAPI
-FsRtlRemoveBaseMcbEntry(IN PBASE_MCB Mcb,
-                        IN LONGLONG Vbn,
-                        IN LONGLONG SectorCount)
-{
-	LARGE_MCB_MAPPING_ENTRY Node;
-	PLARGE_MCB_MAPPING_ENTRY Element;
-
-	Node.RunStartVbn.QuadPart = Vbn;
-	Node.SectorCount.QuadPart = SectorCount;
-
-	while ((Element = RtlLookupElementGenericTable(Mcb->Mapping, &Node)))
-	{
-		// Must split
-		if (Element->RunStartVbn.QuadPart < Node.RunStartVbn.QuadPart &&
-			Element->SectorCount.QuadPart > Node.SectorCount.QuadPart)
-		{
-			LARGE_MCB_MAPPING_ENTRY Upper, Reinsert;
-			PLARGE_MCB_MAPPING_ENTRY Reinserted, Inserted;
-			LARGE_INTEGER StartHole = Node.RunStartVbn;
-			LARGE_INTEGER EndHole;
-			EndHole.QuadPart = Node.RunStartVbn.QuadPart + Node.SectorCount.QuadPart;
-			Upper.RunStartVbn.QuadPart = EndHole.QuadPart;
-			Upper.StartingLbn.QuadPart = 
-				Element->StartingLbn.QuadPart + 
-				EndHole.QuadPart - 
-				Element->RunStartVbn.QuadPart;
-			Upper.SectorCount.QuadPart = 
-				Element->SectorCount.QuadPart -
-				(EndHole.QuadPart - Element->RunStartVbn.QuadPart);
-			Reinsert = *Element;
-			Reinsert.SectorCount.QuadPart = 
-				Element->RunStartVbn.QuadPart - StartHole.QuadPart;
-			RemoveEntryList(&Element->Sequence);
-			RtlDeleteElementGenericTable(Mcb->Mapping, Element);
-			Mcb->PairCount--;
-
-			Reinserted = RtlInsertElementGenericTable
-				(Mcb->Mapping, &Reinsert, sizeof(Reinsert), NULL);
-			InsertHeadList(GET_LIST_HEAD(Mcb->Mapping), &Reinserted->Sequence);
-			Mcb->PairCount++;
-			
-			Inserted = RtlInsertElementGenericTable
-				(Mcb->Mapping, &Upper, sizeof(Upper), NULL);
-			InsertHeadList(GET_LIST_HEAD(Mcb->Mapping), &Inserted->Sequence);
-			Mcb->PairCount++;
-		}
-		else if (Element->RunStartVbn.QuadPart < Node.RunStartVbn.QuadPart)
-		{
-			LARGE_MCB_MAPPING_ENTRY NewElement;
-			PLARGE_MCB_MAPPING_ENTRY Reinserted;
-			LARGE_INTEGER StartHole = Node.RunStartVbn;
-			NewElement.RunStartVbn = Element->RunStartVbn;
-			NewElement.StartingLbn = Element->StartingLbn;
-			NewElement.SectorCount.QuadPart = StartHole.QuadPart -
Element->StartingLbn.QuadPart;
-
-			RemoveEntryList(&Element->Sequence);
-			RtlDeleteElementGenericTable(Mcb->Mapping, Element);
-			Mcb->PairCount--;
-			
-			Reinserted = RtlInsertElementGenericTable
-				(Mcb->Mapping, &NewElement, sizeof(NewElement), NULL);
-			InsertHeadList(GET_LIST_HEAD(Mcb->Mapping), &Reinserted->Sequence);
-			Mcb->PairCount++;			
-		}
-		else
-		{
-			LARGE_MCB_MAPPING_ENTRY NewElement;
-			PLARGE_MCB_MAPPING_ENTRY Reinserted;
-			LARGE_INTEGER EndHole = Element->RunStartVbn;
-			LARGE_INTEGER EndRun;
-			EndRun.QuadPart = Element->RunStartVbn.QuadPart +
Element->SectorCount.QuadPart;
-			NewElement.RunStartVbn = EndHole;
-			NewElement.StartingLbn.QuadPart = Element->StartingLbn.QuadPart + 
-				(EndHole.QuadPart - Element->RunStartVbn.QuadPart);
-			NewElement.SectorCount.QuadPart = EndRun.QuadPart - EndHole.QuadPart;
-
-			RemoveEntryList(&Element->Sequence);
-			RtlDeleteElementGenericTable(Mcb->Mapping, Element);
-			Mcb->PairCount--;
-			
-			Reinserted = RtlInsertElementGenericTable
-				(Mcb->Mapping, &NewElement, sizeof(NewElement), NULL);
-			InsertHeadList(GET_LIST_HEAD(Mcb->Mapping), &Reinserted->Sequence);
-			Mcb->PairCount++;			
-		}
-	}
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlRemoveLargeMcbEntry(IN PLARGE_MCB Mcb,
-                         IN LONGLONG Vbn,
-                         IN LONGLONG SectorCount)
-{
-	DPRINT("FsRtlRemoveLargeMcbEntry Mcb %x, Vbn %x, SectorCount %x\n", Mcb,
(ULONG)Vbn, (ULONG)SectorCount);
-
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    FsRtlRemoveBaseMcbEntry(&(Mcb->BaseMcb),
-                            Vbn,
-                            SectorCount);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done\n");
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlResetBaseMcb(IN PBASE_MCB Mcb)
-{
-	PLARGE_MCB_MAPPING_ENTRY Element;
-
-	DPRINT("Reset MCB %x\n", Mcb);
-	while (RtlNumberGenericTableElements(Mcb->Mapping) &&
-		   (Element = (PLARGE_MCB_MAPPING_ENTRY)RtlGetElementGenericTable(Mcb->Mapping,
0)))
-	{
-		DPRINT("Deleting %x\n", Element);
-		RtlDeleteElementGenericTable(Mcb->Mapping, Element);
-	}
-
-	Mcb->PairCount = 0;
-	Mcb->MaximumPairCount = 0;
-	DPRINT("Done\n");
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlResetLargeMcb(IN PLARGE_MCB Mcb,
-                   IN BOOLEAN SelfSynchronized)
-{
-    if (!SelfSynchronized)
-    {
-        KeAcquireGuardedMutex(Mcb->GuardedMutex);
-	}
-
-	FsRtlResetBaseMcb(&Mcb->BaseMcb);
-
-
-    if (!SelfSynchronized)
-    {
-		KeReleaseGuardedMutex(Mcb->GuardedMutex);
-    }
-}
-
-#define MCB_BUMP_NO_MORE 0
-#define MCB_BUMP_AGAIN   1
-
-static ULONG NTAPI McbBump(PBASE_MCB Mcb, PLARGE_MCB_MAPPING_ENTRY FixedPart)
-{
-	LARGE_MCB_MAPPING_ENTRY Reimagined;
-	PLARGE_MCB_MAPPING_ENTRY Found = NULL;
-
-	DPRINT("McbBump %x (%x:%x)\n", Mcb, FixedPart->RunStartVbn.LowPart,
FixedPart->SectorCount.LowPart);
-
-	Reimagined = *FixedPart;
-	while ((Found = RtlLookupElementGenericTable(Mcb->Mapping, &Reimagined)))
-	{
-		Reimagined = *Found;
-		Reimagined.RunStartVbn.QuadPart = 
-			FixedPart->RunStartVbn.QuadPart + FixedPart->SectorCount.QuadPart;
-		DPRINT("Reimagined %x\n", Reimagined.RunStartVbn.LowPart);
-	}
-
-	DPRINT("Found %x\n", Found);
-	if (!Found) return MCB_BUMP_NO_MORE;
-	DPRINT1
-		("Moving %x-%x to %x because %x-%x overlaps\n",
-		 Found->RunStartVbn.LowPart, 
-		 Found->RunStartVbn.LowPart + Found->SectorCount.QuadPart,
-		 Reimagined.RunStartVbn.LowPart + Reimagined.SectorCount.LowPart,
-		 Reimagined.RunStartVbn.LowPart,
-		 Reimagined.RunStartVbn.LowPart + Reimagined.SectorCount.LowPart);
-	Found->RunStartVbn.QuadPart = Reimagined.RunStartVbn.QuadPart +
Reimagined.SectorCount.QuadPart;
-	Found->StartingLbn.QuadPart = Reimagined.StartingLbn.QuadPart +
Reimagined.SectorCount.QuadPart;
-
-	DPRINT("Again\n");
-	return MCB_BUMP_AGAIN;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-FsRtlSplitBaseMcb(IN PBASE_MCB Mcb,
-                  IN LONGLONG Vbn,
-                  IN LONGLONG Amount)
-{
-	ULONG Result;
-	LARGE_MCB_MAPPING_ENTRY Node;
-	PLARGE_MCB_MAPPING_ENTRY Existing = NULL;
-
-	Node.RunStartVbn.QuadPart = Vbn;
-	Node.SectorCount.QuadPart = 0;
-	
-	Existing = RtlLookupElementGenericTable(Mcb->Mapping, &Node);
-
-	if (Existing)
-	{
-		// We're in the middle of a run
-		LARGE_MCB_MAPPING_ENTRY UpperPart;
-		LARGE_MCB_MAPPING_ENTRY LowerPart;
-		PLARGE_MCB_MAPPING_ENTRY InsertedUpper;
-
-		UpperPart.RunStartVbn.QuadPart = Node.RunStartVbn.QuadPart + Amount;
-		UpperPart.SectorCount.QuadPart = Existing->RunStartVbn.QuadPart + 
-			(Existing->SectorCount.QuadPart - Node.RunStartVbn.QuadPart);
-		UpperPart.StartingLbn.QuadPart = Existing->StartingLbn.QuadPart + 
-			(Node.RunStartVbn.QuadPart - Existing->RunStartVbn.QuadPart);
-		LowerPart.RunStartVbn.QuadPart = Existing->RunStartVbn.QuadPart;
-		LowerPart.SectorCount.QuadPart = Node.RunStartVbn.QuadPart -
Existing->RunStartVbn.QuadPart;
-		LowerPart.StartingLbn.QuadPart = Existing->StartingLbn.QuadPart;
-		
-		Node = UpperPart;
-
-		DPRINT("Loop: %x\n", Node.RunStartVbn.LowPart);
-		while ((Result = McbBump(Mcb, &Node)) == MCB_BUMP_AGAIN)
-		{
-			DPRINT("Node: %x\n", Node.RunStartVbn.LowPart);
-		}
-		DPRINT("Done\n");
-
-		if (Result == MCB_BUMP_NO_MORE)
-		{
-			Node = *Existing;
-			RemoveHeadList(&Existing->Sequence);
-			RtlDeleteElementGenericTable(Mcb->Mapping, Existing);
-			Mcb->PairCount--;
-			
-			// Adjust the element we found.
-			Existing->SectorCount = LowerPart.SectorCount;
-
-			InsertedUpper = RtlInsertElementGenericTable
-				(Mcb->Mapping, &UpperPart, sizeof(UpperPart), NULL);
-			if (!InsertedUpper)
-			{
-				// Just make it like it was
-				Existing->SectorCount = Node.SectorCount;
-				return FALSE;
-			}
-			InsertHeadList(GET_LIST_HEAD(Mcb->Mapping), &InsertedUpper->Sequence);
-			Mcb->PairCount++;
-		}
-		else
-		{
-			Node.RunStartVbn.QuadPart = Vbn;
-			Node.SectorCount.QuadPart = Amount;
-			while ((Result = McbBump(Mcb, &Node)) == MCB_BUMP_AGAIN);
-			return Result == MCB_BUMP_NO_MORE;
-		}
-	}
-
-	DPRINT("Done\n");
-	
-	return TRUE;
-}
-
-/*
- * @implemented
- */
-BOOLEAN
-NTAPI
-FsRtlSplitLargeMcb(IN PLARGE_MCB Mcb,
-                   IN LONGLONG Vbn,
-                   IN LONGLONG Amount)
-{
-    BOOLEAN Result;
-
-	DPRINT("FsRtlSplitLargeMcb %x, Vbn %x, Amount %x\n", Mcb, (ULONG)Vbn,
(ULONG)Amount);
-
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    Result = FsRtlSplitBaseMcb(&(Mcb->BaseMcb),
-                               Vbn,
-                               Amount);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-
-	DPRINT("Done %d\n", Result);
-
-    return Result;
-}
-
-/*
- * @unimplemented
- */
-VOID
-NTAPI
-FsRtlTruncateBaseMcb(IN PBASE_MCB Mcb,
-                     IN LONGLONG Vbn)
-{
-	DPRINT("FsRtlTruncateBaseMcb(%x,%x)\n", Mcb, (ULONG)Vbn);
-	if (!Vbn)
-	{
-		DPRINT("Resetting\n");
-		FsRtlResetBaseMcb(Mcb);
-	}
-	else
-	{
-		LARGE_MCB_MAPPING_ENTRY Truncate;
-		PLARGE_MCB_MAPPING_ENTRY Found;
-		Truncate.RunStartVbn.QuadPart = Vbn;
-		Truncate.SectorCount.QuadPart = (1ull<<62) - Truncate.RunStartVbn.QuadPart;
-		while ((Found = RtlLookupElementGenericTable(Mcb->Mapping, &Truncate)))
-		{
-			DPRINT("Deleting %x\n", Found);
-			RemoveEntryList(&Found->Sequence);
-			RtlDeleteElementGenericTable(Mcb->Mapping, Found);
-			Mcb->PairCount--;
-		}
-	}
-	DPRINT("Done\n");
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlTruncateLargeMcb(IN PLARGE_MCB Mcb,
-                      IN LONGLONG Vbn)
-{
-	DPRINT("FsRtlTruncateLargeMcb %x Vbn %x\n", Mcb, (ULONG)Vbn);
-    KeAcquireGuardedMutex(Mcb->GuardedMutex);
-    FsRtlTruncateBaseMcb(&(Mcb->BaseMcb),
-                         Vbn);
-    KeReleaseGuardedMutex(Mcb->GuardedMutex);
-	DPRINT("Done\n");
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlUninitializeBaseMcb(IN PBASE_MCB Mcb)
-{
-	DPRINT("FsRtlUninitializeBaseMcb(%x)\n", Mcb);
-	FsRtlResetBaseMcb(Mcb);
-
-	DPRINT("Mcb->Mapping %x\n", Mcb->Mapping);
-    if (Mcb->PoolType == PagedPool)
-    {
-		DPRINT("Deallocate to lookaside list\n");
-        ExFreeToPagedLookasideList(&FsRtlFirstMappingLookasideList,
-                                   Mcb->Mapping);
-    }
-    else
-    {
-		DPRINT("Deallocate\n");
-        ExFreePoolWithTag(Mcb->Mapping, 'FSBC');
-    }
-	Mcb->Mapping = NULL;
-	DPRINT("Done\n");
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlUninitializeLargeMcb(IN PLARGE_MCB Mcb)
-{
-    if (Mcb->GuardedMutex)
-    {
-        ExFreeToNPagedLookasideList(&FsRtlFastMutexLookasideList,
-                                    Mcb->GuardedMutex);
-		Mcb->GuardedMutex = NULL;
-        FsRtlUninitializeBaseMcb(&(Mcb->BaseMcb));
-    }
-}
-
-// MCB
-
-/*
- * @implemented
- */
-BOOLEAN
-NTAPI
-FsRtlAddMcbEntry(IN PMCB Mcb,
-                 IN VBN Vbn,
-                 IN LBN Lbn,
-                 IN ULONG SectorCount)
-{
-    /* Call the newer function */
-    return FsRtlAddLargeMcbEntry(&Mcb->
-                                 DummyFieldThatSizesThisStructureCorrectly,
-                                 (LONGLONG)Vbn,
-                                 (LONGLONG)Lbn,
-                                 (LONGLONG)SectorCount);
-}
-
-/*
- * @implemented
- */
-BOOLEAN
-NTAPI
-FsRtlGetNextMcbEntry(IN PMCB Mcb,
-                     IN ULONG RunIndex,
-                     OUT PVBN Vbn,
-                     OUT PLBN Lbn,
-                     OUT PULONG SectorCount)
-{
-    BOOLEAN Return = FALSE;
-    LONGLONG llVbn;
-    LONGLONG llLbn;
-    LONGLONG llSectorCount;
-
-    /* Call the Large version */
-    Return = FsRtlGetNextLargeMcbEntry(
-        &Mcb->DummyFieldThatSizesThisStructureCorrectly,
-        RunIndex,
-        &llVbn,
-        &llLbn,
-        &llSectorCount);
-
-    /* Return the lower 32 bits */
-    *Vbn = (ULONG)llVbn;
-    *Lbn = (ULONG)llLbn;
-    *SectorCount = (ULONG)llSectorCount;
-
-    /* And return the original value */
-    return Return;
-}
-
-/*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlInitializeMcb(IN PMCB Mcb,
-                   IN POOL_TYPE PoolType)
-{
-    /* Call the newer function */
-    FsRtlInitializeLargeMcb(&Mcb->DummyFieldThatSizesThisStructureCorrectly,
-                            PoolType);
+    KeBugCheck(FILE_SYSTEM);
+    return(FALSE);
 }
 
 /*
@@ -1078,11 +235,41 @@
  */
 ULONG
 NTAPI
-FsRtlNumberOfRunsInMcb(IN PMCB Mcb)
+FsRtlNumberOfRunsInLargeMcb(IN PLARGE_MCB Mcb)
+{
+    ULONG NumberOfRuns;
+
+    /* Read the number of runs while holding the MCB lock */
+    KeAcquireGuardedMutex(Mcb->GuardedMutex);
+    NumberOfRuns = Mcb->BaseMcb.PairCount;
+    KeReleaseGuardedMutex(Mcb->GuardedMutex);
+
+    /* Return the count */
+    return NumberOfRuns;
+}
+
+/*
+ * @implemented
+ */
+ULONG
+NTAPI
+FsRtlNumberOfRunsInMcb (IN PMCB Mcb)
 {
     /* Call the newer function */
     return FsRtlNumberOfRunsInLargeMcb(
         &Mcb->DummyFieldThatSizesThisStructureCorrectly);
+}
+
+/*
+ * @unimplemented
+ */
+VOID
+NTAPI
+FsRtlRemoveLargeMcbEntry(IN PLARGE_MCB Mcb,
+                         IN LONGLONG Vbn,
+                         IN LONGLONG SectorCount)
+{
+    KeBugCheck(FILE_SYSTEM);
 }
 
 /*
@@ -1101,12 +288,47 @@
 }
 
 /*
- * @implemented
- */
-VOID
-NTAPI
-FsRtlTruncateMcb(IN PMCB Mcb,
-                 IN VBN  Vbn)
+ * @unimplemented
+ */
+VOID
+NTAPI
+FsRtlResetLargeMcb(IN PLARGE_MCB Mcb,
+                   IN BOOLEAN SelfSynchronized)
+{
+    KeBugCheck(FILE_SYSTEM);
+}
+
+/*
+ * @unimplemented
+ */
+BOOLEAN
+NTAPI
+FsRtlSplitLargeMcb(IN PLARGE_MCB Mcb,
+                   IN LONGLONG Vbn,
+                   IN LONGLONG Amount)
+{
+    KeBugCheck(FILE_SYSTEM);
+    return FALSE;
+}
+
+/*
+ * @unimplemented
+ */
+VOID
+NTAPI
+FsRtlTruncateLargeMcb(IN PLARGE_MCB Mcb,
+                      IN LONGLONG Vbn)
+{
+    KeBugCheck(FILE_SYSTEM);
+}
+
+/*
+ * @implemented
+ */
+VOID
+NTAPI
+FsRtlTruncateMcb (IN PMCB Mcb,
+                  IN VBN  Vbn)
 {
     /* Call the newer function */
     FsRtlTruncateLargeMcb(&Mcb->DummyFieldThatSizesThisStructureCorrectly,
@@ -1114,6 +336,16 @@
 }
 
 /*
+ * @unimplemented
+ */
+VOID
+NTAPI
+FsRtlUninitializeLargeMcb(IN PLARGE_MCB Mcb)
+{
+    KeBugCheck(FILE_SYSTEM);
+}
+
+/*
  * @implemented
  */
 VOID