+++ /dev/null
-/*
- * PROJECT: ReactOS Kernel
- * LICENSE: GPL - See COPYING in the top level directory
- * FILE: ntoskrnl/fsrtl/tunnel.c
- * PURPOSE: Provides the Tunnel Cache implementation for file system drivers.
- * PROGRAMMERS: Johannes Anderwald (johannes.anderwald@reactos.org)
- * Pierre Schweitzer (pierre@reactos.org)
- */
-
-/* INCLUDES ******************************************************************/
-
-#include <ntoskrnl.h>
-#define NDEBUG
-#include <debug.h>
-
-typedef struct {
- RTL_SPLAY_LINKS SplayInfo;
- LIST_ENTRY TimerQueueEntry;
- LARGE_INTEGER Time;
- ULONGLONG DirectoryKey;
- ULONG Flags;
- UNICODE_STRING LongName;
- UNICODE_STRING ShortName;
- PVOID Data;
- ULONG DataLength;
-} TUNNEL_NODE_ENTRY, *PTUNNEL_NODE_ENTRY;
-
-ULONG TunnelMaxEntries = 256;
-ULONG TunnelMaxAge = 15;
-PAGED_LOOKASIDE_LIST TunnelLookasideList;
-
-#define DEFAULT_EXTRA_SIZE (72)
-#define DEFAULT_ENTRY_SIZE (sizeof(TUNNEL_NODE_ENTRY) + DEFAULT_EXTRA_SIZE)
-
-#define TUNNEL_FLAG_POOL 0x2
-#define TUNNEL_FLAG_KEY_SHORT_NAME 0x1
-
-VOID
-FsRtlFreeTunnelNode(
- IN PTUNNEL_NODE_ENTRY CurEntry,
- IN PLIST_ENTRY PoolList OPTIONAL)
-{
- if (PoolList)
- {
- /* divert the linked list entry, it's not required anymore, but we need it */
- InsertHeadList(PoolList, &CurEntry->TimerQueueEntry);
- return;
- }
-
- if (CurEntry->Flags & TUNNEL_FLAG_POOL)
- ExFreePool(CurEntry);
- else
- ExFreeToPagedLookasideList(&TunnelLookasideList, CurEntry);
-}
-
-VOID
-FsRtlRemoveNodeFromTunnel(
- IN PTUNNEL Cache,
- IN PTUNNEL_NODE_ENTRY CurEntry,
- IN PLIST_ENTRY PoolList,
- OUT PBOOLEAN Rebalance)
-{
- /* delete entry and rebalance if required */
- if (Rebalance && *Rebalance)
- {
- Cache->Cache = RtlDelete(&CurEntry->SplayInfo);
- /* reset */
- *Rebalance = FALSE;
- }
- else
- {
- RtlDeleteNoSplay(&CurEntry->SplayInfo, &Cache->Cache);
- }
-
- /* remove entry */
- RemoveEntryList(&CurEntry->TimerQueueEntry);
-
- /* free node entry */
- FsRtlFreeTunnelNode(CurEntry, PoolList);
-
- /* decrement node count */
- Cache->NumEntries--;
-}
-
-VOID
-FsRtlPruneTunnelCache(
- IN PTUNNEL Cache,
- IN PLIST_ENTRY PoolList)
-{
- PLIST_ENTRY Entry, NextEntry;
- PTUNNEL_NODE_ENTRY CurEntry;
- LARGE_INTEGER CurTime, OldTime;
- BOOLEAN Rebalance = TRUE;
- PAGED_CODE();
-
- /* query time */
- KeQuerySystemTime(&CurTime);
-
- /* subtract maximum node age */
- OldTime.QuadPart = CurTime.QuadPart - TunnelMaxAge;
-
- /* free all entries */
- Entry = Cache->TimerQueue.Flink;
-
- while(Entry != &Cache->TimerQueue)
- {
- /* get node entry */
- CurEntry = CONTAINING_RECORD(Entry, TUNNEL_NODE_ENTRY, TimerQueueEntry);
-
- /* get next entry */
- NextEntry = Entry->Flink;
-
- /* prune if expired OR if in advance in time */
- if (CurEntry->Time.QuadPart < OldTime.QuadPart ||
- CurEntry->Time.QuadPart > CurTime.QuadPart)
- {
- FsRtlRemoveNodeFromTunnel(Cache, CurEntry, PoolList, &Rebalance);
- }
-
- /* move to next entry */
- Entry = NextEntry;
- }
-
- /* If we have too many entries */
- while (Cache->NumEntries > TunnelMaxEntries)
- {
- CurEntry = CONTAINING_RECORD(Entry, TUNNEL_NODE_ENTRY, TimerQueueEntry);
- FsRtlRemoveNodeFromTunnel(Cache, CurEntry, PoolList, &Rebalance);
- }
-}
-
-INIT_FUNCTION
-VOID
-FsRtlGetTunnelParameterValue(
- IN PUNICODE_STRING ParameterName,
- OUT PULONG Value)
-{
- UNICODE_STRING Root = RTL_CONSTANT_STRING(L"Registry\\Machine\\System\\CurrentControlSet\\Control\\FileSystem");
- OBJECT_ATTRIBUTES ObjectAttributes;
- HANDLE hKey;
- NTSTATUS Status;
- ULONG Length;
- PKEY_VALUE_FULL_INFORMATION Info;
-
- /* initialize object attributes */
- InitializeObjectAttributes(&ObjectAttributes, &Root, OBJ_CASE_INSENSITIVE, NULL, NULL);
-
- /* open registry key */
- Status = ZwOpenKey(&hKey, KEY_READ, &ObjectAttributes);
-
- if (!NT_SUCCESS(Status))
- {
- /* failed to open key */
- return;
- }
-
- /* query value size */
- Status = ZwQueryValueKey(hKey, ParameterName, KeyValueFullInformation, NULL, 0, &Length);
-
- if (Status != STATUS_BUFFER_TOO_SMALL)
- {
- /* failed to query size */
- ZwClose(hKey);
- return;
- }
-
- /* allocate buffer */
- Info = ExAllocatePool(PagedPool, Length);
-
- if (!Info)
- {
- /* out of memory */
- ZwClose(hKey);
- return;
- }
-
- /* query value */
- Status = ZwQueryValueKey(hKey, ParameterName, KeyValueFullInformation, NULL, 0, &Length);
-
- if (NT_SUCCESS(Status))
- {
- if (Info->DataLength)
- {
- /* store result */
- *Value = (ULONG)((ULONG_PTR)Info + Info->DataOffset);
- }
- }
-
- /* free buffer */
- ExFreePool(Info);
-
- /* close key */
- ZwClose(hKey);
-}
-
-INIT_FUNCTION
-VOID
-NTAPI
-FsRtlInitializeTunnels(VOID)
-{
- ULONG TunnelEntries;
- UNICODE_STRING MaximumTunnelEntryAgeInSeconds = RTL_CONSTANT_STRING(L"MaximumTunnelEntryAgeInSeconds");
- UNICODE_STRING MaximumTunnelEntries = RTL_CONSTANT_STRING( L"MaximumTunnelEntries");
-
- /* check for nt */
- if (MmIsThisAnNtAsSystem())
- {
- /* default */
- TunnelMaxEntries = 1024;
- }
-
- /* check for custom override of max entries*/
- FsRtlGetTunnelParameterValue(&MaximumTunnelEntries, &TunnelMaxEntries);
-
- /* check for custom override of age*/
- FsRtlGetTunnelParameterValue(&MaximumTunnelEntryAgeInSeconds, &TunnelMaxAge);
-
- if (!TunnelMaxAge)
- {
- /* no age means no entries */
- TunnelMaxEntries = 0;
- }
-
- /* get max entries */
- TunnelEntries = TunnelMaxEntries;
-
- /* convert to ticks */
- TunnelMaxAge *= 10000000;
-
- if(TunnelMaxEntries <= 65535)
- {
- /* use max 256 entries */
- TunnelEntries = TunnelMaxEntries / 16;
- }
-
- if(!TunnelEntries && TunnelMaxEntries )
- {
- /* max tunnel entries was too small */
- TunnelEntries = TunnelMaxEntries + 1;
- }
-
- if (TunnelEntries > 0xFFFF)
- {
- /* max entries is 256 */
- TunnelEntries = 256;
- }
-
- /* initialize look aside list */
- ExInitializePagedLookasideList(&TunnelLookasideList, NULL, NULL, 0, DEFAULT_ENTRY_SIZE, 'TunL', TunnelEntries);
-}
-
-LONG
-FsRtlCompareNodeAndKey(
- IN PTUNNEL_NODE_ENTRY CurEntry,
- IN ULONGLONG DirectoryKey,
- IN PUNICODE_STRING KeyString)
-{
- PUNICODE_STRING String;
- LONG Ret;
-
- if (DirectoryKey > CurEntry->DirectoryKey)
- {
- Ret = 1;
- }
- else if (DirectoryKey < CurEntry->DirectoryKey)
- {
- Ret = -1;
- }
- else
- {
- if (CurEntry->Flags & TUNNEL_FLAG_KEY_SHORT_NAME)
- {
- /* use short name as key */
- String = &CurEntry->ShortName;
- }
- else
- {
- /* use long name as key */
- String = &CurEntry->LongName;
- }
-
- Ret = RtlCompareUnicodeString(KeyString, String, TRUE);
- }
-
- return Ret;
-}
-
-VOID
-FsRtlEmptyFreePoolList(
- IN PLIST_ENTRY PoolList)
-{
- PLIST_ENTRY CurEntry;
- PTUNNEL_NODE_ENTRY CurNode;
-
- /* loop over all the entry */
- while (!IsListEmpty(PoolList))
- {
- /* and free them, one by one */
- CurEntry = RemoveHeadList(PoolList);
- CurNode = CONTAINING_RECORD(CurEntry, TUNNEL_NODE_ENTRY, TimerQueueEntry);
- FsRtlFreeTunnelNode(CurNode, 0);
- }
-}
-
-/* PUBLIC FUNCTIONS **********************************************************/
-
-/*++
- * @name FsRtlAddToTunnelCache
- * @implemented
- *
- * FILLME
- *
- * @param Cache
- * FILLME
- *
- * @param DirectoryKey
- * FILLME
- *
- * @param ShortName
- * FILLME
- *
- * @param LongName
- * FILLME
- *
- * @param KeyByShortName
- * FILLME
- *
- * @param DataLength
- * FILLME
- *
- * @param Data
- * FILLME
- *
- * @return None
- *
- * @remarks None
- *
- *--*/
-VOID
-NTAPI
-FsRtlAddToTunnelCache(IN PTUNNEL Cache,
- IN ULONGLONG DirectoryKey,
- IN PUNICODE_STRING ShortName,
- IN PUNICODE_STRING LongName,
- IN BOOLEAN KeyByShortName,
- IN ULONG DataLength,
- IN PVOID Data)
-{
- PTUNNEL_NODE_ENTRY NodeEntry;
- PRTL_SPLAY_LINKS CurEntry, LastEntry;
- ULONG Length;
- LONG Result = 0;
- BOOLEAN AllocatedFromPool = FALSE;
- PUNICODE_STRING KeyString;
- LIST_ENTRY PoolList;
-
- PAGED_CODE();
-
- /* check if tunnel cache is enabled */
- if (!TunnelMaxEntries)
- {
- /* entries are disabled */
- return;
- }
-
- /* initialize free pool list */
- InitializeListHead(&PoolList);
-
- /* calculate node length */
- Length = sizeof(TUNNEL_NODE_ENTRY);
-
- /* add data size */
- Length += DataLength;
-
- if (ShortName)
- {
- /* add short name length */
- Length += ShortName->Length;
- }
-
- if (LongName)
- {
- /* add short name length */
- Length += LongName->Length;
- }
-
- if (Length > DEFAULT_ENTRY_SIZE)
- {
- /* bigger than default entry */
- NodeEntry = ExAllocatePool(NonPagedPool, Length);
- AllocatedFromPool = TRUE;
- }
- else
- {
- /* get standard entry */
- NodeEntry = ExAllocateFromPagedLookasideList(&TunnelLookasideList);
- }
-
- /* check for success */
- if (!NodeEntry)
- {
- /* out of memory */
- return;
- }
-
- /* acquire lock */
- ExAcquireFastMutex(&Cache->Mutex);
-
- /* now search cache for existing entries */
- CurEntry = Cache->Cache;
-
- /* check which key should be used for search */
- KeyString = (KeyByShortName ? ShortName : LongName);
-
- /* initialize last entry */
- LastEntry = NULL;
-
- while(CurEntry)
- {
- /* compare current node */
- Result = FsRtlCompareNodeAndKey((PTUNNEL_NODE_ENTRY)CurEntry, DirectoryKey, KeyString);
-
- /* backup last entry */
- LastEntry = CurEntry;
-
- if (Result > 0)
- {
- /* current directory key is bigger */
- CurEntry = CurEntry->LeftChild;
- }
- else
- {
- if (Result == 0)
- {
- /* found equal entry */
- break;
- }
-
- /* current directory key is smaller */
- CurEntry = CurEntry->RightChild;
- }
- }
-
- /* initialize node entry */
- RtlInitializeSplayLinks(&NodeEntry->SplayInfo);
-
- if (CurEntry != NULL)
- {
- /* found existing item */
- if (CurEntry->LeftChild)
- {
- /* update parent */
- RtlInsertAsLeftChild(NodeEntry, CurEntry->LeftChild);
- }
-
- if (CurEntry->RightChild)
- {
- /* update parent */
- RtlInsertAsRightChild(NodeEntry, CurEntry->RightChild);
- }
-
- if (CurEntry->Parent == CurEntry)
- {
- /* cur entry was root */
- Cache->Cache = (struct _RTL_SPLAY_LINKS*)NodeEntry;
- }
- else
- {
- /* update parent node */
- if (RtlIsLeftChild(CurEntry))
- {
- RtlInsertAsLeftChild(RtlParent(CurEntry), NodeEntry);
- }
- else
- {
- RtlInsertAsRightChild(RtlParent(CurEntry), NodeEntry);
- }
- }
-
- /* remove entry */
- RemoveEntryList(&((PTUNNEL_NODE_ENTRY)CurEntry)->TimerQueueEntry);
-
- /* free node entry */
- FsRtlFreeTunnelNode((PTUNNEL_NODE_ENTRY)CurEntry, &PoolList);
-
- /* decrement node count */
- Cache->NumEntries--;
- }
- else
- {
- if (LastEntry == NULL)
- {
- /* first entry in tunnel cache */
- Cache->Cache = (struct _RTL_SPLAY_LINKS*)NodeEntry;
- }
- else
- {
- if (Result > 0)
- {
- /* new left node */
- RtlInsertAsLeftChild(LastEntry, NodeEntry);
- }
- else
- {
- /* new right node */
- RtlInsertAsRightChild(LastEntry, NodeEntry);
- }
- }
- }
-
- /* initialize entry */
- KeQuerySystemTime(&NodeEntry->Time);
-
- NodeEntry->DirectoryKey = DirectoryKey;
- NodeEntry->Flags = (AllocatedFromPool ? TUNNEL_FLAG_POOL : 0x0);
- NodeEntry->Flags |= (KeyByShortName ? TUNNEL_FLAG_KEY_SHORT_NAME : 0x0);
-
- if (ShortName)
- {
- /* copy short name */
- NodeEntry->ShortName.Length = ShortName->Length;
- NodeEntry->ShortName.MaximumLength = ShortName->Length;
- NodeEntry->ShortName.Buffer = (LPWSTR)((ULONG_PTR)NodeEntry + sizeof(TUNNEL_NODE_ENTRY));
-
- RtlMoveMemory(NodeEntry->ShortName.Buffer, ShortName->Buffer, ShortName->Length);
- }
- else
- {
- NodeEntry->ShortName.Length = NodeEntry->ShortName.MaximumLength = 0;
- NodeEntry->ShortName.Buffer = NULL;
- }
-
- if (LongName)
- {
- /* copy long name */
- NodeEntry->LongName.Length = LongName->Length;
- NodeEntry->LongName.MaximumLength = LongName->Length;
- NodeEntry->LongName.Buffer = (LPWSTR)((ULONG_PTR)NodeEntry + sizeof(TUNNEL_NODE_ENTRY) + NodeEntry->ShortName.Length);
-
- RtlMoveMemory(NodeEntry->LongName.Buffer, LongName->Buffer, LongName->Length);
- }
- else
- {
- NodeEntry->LongName.Length = NodeEntry->LongName.MaximumLength = 0;
- NodeEntry->LongName.Buffer = NULL;
- }
-
- NodeEntry->DataLength = DataLength;
- NodeEntry->Data = (PVOID)((ULONG_PTR)NodeEntry + sizeof(TUNNEL_NODE_ENTRY) + NodeEntry->ShortName.Length + NodeEntry->LongName.Length);
- RtlMoveMemory(NodeEntry->Data, Data, DataLength);
-
- /* increment node count */
- Cache->NumEntries++;
-
- /* insert into list */
- InsertTailList(&Cache->TimerQueue, &NodeEntry->TimerQueueEntry);
-
- /* prune cache */
- FsRtlPruneTunnelCache(Cache, &PoolList);
-
- /* release lock */
- ExReleaseFastMutex(&Cache->Mutex);
-
- /* free pool list */
- FsRtlEmptyFreePoolList(&PoolList);
-}
-
-/*++
- * @name FsRtlDeleteKeyFromTunnelCache
- * @implemented
- *
- * FILLME
- *
- * @param Cache
- * FILLME
- *
- * @param DirectoryKey
- * FILLME
- *
- * @return None
- *
- * @remarks None
- *
- *--*/
-VOID
-NTAPI
-FsRtlDeleteKeyFromTunnelCache(IN PTUNNEL Cache,
- IN ULONGLONG DirectoryKey)
-{
- BOOLEAN Rebalance = TRUE;
- LIST_ENTRY PoolList;
- PTUNNEL_NODE_ENTRY CurNode;
- PRTL_SPLAY_LINKS CurEntry, LastEntry = NULL, Successors;
-
- PAGED_CODE();
-
- /* check if tunnel cache is enabled */
- if (!TunnelMaxEntries)
- {
- /* entries are disabled */
- return;
- }
-
- /* initialize free pool list */
- InitializeListHead(&PoolList);
-
- /* acquire lock */
- ExAcquireFastMutex(&Cache->Mutex);
-
- /* Look for the entry */
- CurEntry = Cache->Cache;
- while (CurEntry)
- {
- CurNode = CONTAINING_RECORD(CurEntry, TUNNEL_NODE_ENTRY, SplayInfo);
-
- if (CurNode->DirectoryKey > DirectoryKey)
- {
- /* current directory key is bigger */
- CurEntry = CurEntry->LeftChild;
- }
- else if (CurNode->DirectoryKey < DirectoryKey)
- {
- /* if we have already found one suitable, break */
- if (LastEntry != NULL)
- {
- break;
- }
-
- /* current directory key is smaller */
- CurEntry = CurEntry->RightChild;
- }
- else
- {
- /* save and look for another */
- LastEntry = CurEntry;
- CurEntry = CurEntry->LeftChild;
- }
- }
-
- /* was it found? */
- if (LastEntry == NULL)
- {
- /* release tunnel lock */
- ExReleaseFastMutex(&Cache->Mutex);
-
- return;
- }
-
- /* delete any matching key */
- do
- {
- CurNode = CONTAINING_RECORD(LastEntry, TUNNEL_NODE_ENTRY, SplayInfo);
-
- Successors = RtlRealSuccessor(LastEntry);
- if (CurNode->DirectoryKey != DirectoryKey)
- {
- break;
- }
-
- /* remove from tunnel */
- FsRtlRemoveNodeFromTunnel(Cache, CurNode, &PoolList, &Rebalance);
- LastEntry = Successors;
- }
- while (LastEntry != NULL);
-
- /* release tunnel lock */
- ExReleaseFastMutex(&Cache->Mutex);
-
- /* free pool */
- FsRtlEmptyFreePoolList(&PoolList);
-}
-
-/*++
- * @name FsRtlDeleteTunnelCache
- * @implemented
- *
- * FILLME
- *
- * @param Cache
- * FILLME
- *
- * @return None
- *
- * @remarks None
- *
- *--*/
-VOID
-NTAPI
-FsRtlDeleteTunnelCache(IN PTUNNEL Cache)
-{
- PLIST_ENTRY Entry, NextEntry;
- PTUNNEL_NODE_ENTRY CurEntry;
-
- PAGED_CODE();
-
- /* check if tunnel cache is enabled */
- if (!TunnelMaxEntries)
- {
- /* entries are disabled */
- return;
- }
-
- /* free all entries */
- Entry = Cache->TimerQueue.Flink;
-
- while(Entry != &Cache->TimerQueue)
- {
- /* get node entry */
- CurEntry = CONTAINING_RECORD(Entry, TUNNEL_NODE_ENTRY, TimerQueueEntry);
-
- /* get next entry */
- NextEntry = Entry->Flink;
-
- /* remove entry from list */
- RemoveEntryList(&CurEntry->TimerQueueEntry);
-
- /* free entry */
- FsRtlFreeTunnelNode(CurEntry, NULL);
-
- /* move to next entry */
- Entry = NextEntry;
- }
-
- /* reset object */
- Cache->Cache = NULL;
- Cache->NumEntries = 0;
- InitializeListHead(&Cache->TimerQueue);
-}
-
-/*++
- * @name FsRtlFindInTunnelCache
- * @implemented
- *
- * FILLME
- *
- * @param Cache
- * FILLME
- *
- * @param DirectoryKey
- * FILLME
- *
- * @param ShortName
- * FILLME
- *
- * @param LongName
- * FILLME
- *
- * @param KeyByShortName
- * FILLME
- *
- * @param DataLength
- * FILLME
- *
- * @param Data
- * FILLME
- *
- * @return None
- *
- * @remarks None
- *
- *--*/
-BOOLEAN
-NTAPI
-FsRtlFindInTunnelCache(IN PTUNNEL Cache,
- IN ULONGLONG DirectoryKey,
- IN PUNICODE_STRING Name,
- OUT PUNICODE_STRING ShortName,
- OUT PUNICODE_STRING LongName,
- IN OUT PULONG DataLength,
- OUT PVOID Data)
-{
- BOOLEAN Ret = FALSE;
- PTUNNEL_NODE_ENTRY CurEntry;
- LIST_ENTRY PoolList;
- //NTSTATUS Status;
- LONG Result;
-
- PAGED_CODE();
-
- /* check if tunnel cache is enabled */
- if (!TunnelMaxEntries)
- {
- /* entries are disabled */
- return FALSE;
- }
-
- /* initialize free pool list */
- InitializeListHead(&PoolList);
-
- /* acquire tunnel lock */
- ExAcquireFastMutex(&Cache->Mutex);
-
- /* prune old entries */
- FsRtlPruneTunnelCache(Cache, &PoolList);
-
- /* now search cache for existing entries */
- CurEntry = (PTUNNEL_NODE_ENTRY)Cache->Cache;
-
- while(CurEntry)
- {
- /* compare current node */
- Result = FsRtlCompareNodeAndKey(CurEntry, DirectoryKey, Name);
-
- if (Result > 0)
- {
- /* current directory key is bigger */
- CurEntry = (PTUNNEL_NODE_ENTRY)CurEntry->SplayInfo.LeftChild;
- }
- else
- {
- if (Result == 0)
- {
- /* found equal entry */
- break;
- }
-
- /* current directory key is smaller */
- CurEntry = (PTUNNEL_NODE_ENTRY)CurEntry->SplayInfo.RightChild;
- }
- }
-
- if (CurEntry != NULL)
- {
- _SEH2_TRY
- {
- /* copy short name */
- RtlCopyUnicodeString(ShortName, &CurEntry->ShortName);
-
- /* check size */
- if (LongName->MaximumLength < CurEntry->LongName.Length)
- {
- /* buffer is too small */
- LongName->Buffer = ExAllocatePool(PagedPool, CurEntry->LongName.Length);
- if (LongName->Buffer)
- {
- LongName->Length = CurEntry->LongName.Length;
- LongName->MaximumLength = CurEntry->LongName.MaximumLength;
- RtlMoveMemory(LongName->Buffer, CurEntry->LongName.Buffer, CurEntry->LongName.Length);
- }
- }
- else
- {
- /* buffer is big enough */
- RtlCopyUnicodeString(LongName, &CurEntry->LongName);
- }
-
- /* copy data */
- RtlMoveMemory(Data, CurEntry->Data, CurEntry->DataLength);
-
- /* store size */
- *DataLength = CurEntry->DataLength;
-
- /* done */
- Ret = TRUE;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- /* Get the status */
- //Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- }
-
- /* release tunnel lock */
- ExReleaseFastMutex(&Cache->Mutex);
-
- /* free pool */
- FsRtlEmptyFreePoolList(&PoolList);
-
- return Ret;
-}
-
-/*++
- * @name FsRtlInitializeTunnelCache
- * @implemented
- *
- * FILLME
- *
- * @param Cache
- * FILLME
- *
- * @return None
- *
- * @remarks None
- *
- *--*/
-VOID
-NTAPI
-FsRtlInitializeTunnelCache(IN PTUNNEL Cache)
-{
- PAGED_CODE();
-
- /* initialize mutex */
- ExInitializeFastMutex(&Cache->Mutex);
-
- /* initialize node tree */
- Cache->Cache = NULL;
-
- /* initialize timer list */
- InitializeListHead(&Cache->TimerQueue);
-
- /* initialize node count */
- Cache->NumEntries = 0;
-}
-
-/* EOF */
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