[NTOS:CC]

[reactos.git] / reactos / ntoskrnl / include / internal / cc.h

diff --git a/reactos/ntoskrnl/include/internal/cc.h b/reactos/ntoskrnl/include/internal/cc.h
index 3c7f8d7..40bd6bd 100644 (file)
--- a/reactos/ntoskrnl/include/internal/cc.h
+++ b/reactos/ntoskrnl/include/internal/cc.h
@@ -149,6 +149,7 @@ typedef struct _ROS_SHARED_CACHE_MAP
     PFILE_OBJECT FileObject;
     LARGE_INTEGER SectionSize;
     LARGE_INTEGER FileSize;
+    BOOLEAN PinAccess;
     PCACHE_MANAGER_CALLBACKS Callbacks;
     PVOID LazyWriteContext;
     KSPIN_LOCK CacheMapLock;
@@ -183,6 +184,8 @@ typedef struct _ROS_VACB
     KMUTEX Mutex;
     /* Number of references. */
     ULONG ReferenceCount;
+    /* How many times was it pinned? */
+    volatile LONG PinCount;
     /* Pointer to the shared cache map for the file which this view maps data for. */
     PROS_SHARED_CACHE_MAP SharedCacheMap;
     /* Pointer to the next VACB in a chain. */
@@ -190,9 +193,12 @@ typedef struct _ROS_VACB
 
 typedef struct _INTERNAL_BCB
 {
+    /* Lock */
+    ERESOURCE Lock;
     PUBLIC_BCB PFCB;
     PROS_VACB Vacb;
     BOOLEAN Dirty;
+    BOOLEAN Pinned;
     CSHORT RefCount; /* (At offset 0x34 on WinNT4) */
 } INTERNAL_BCB, *PINTERNAL_BCB;
 
@@ -319,6 +325,7 @@ NTAPI
 CcRosInitializeFileCache(
     PFILE_OBJECT FileObject,
     PCC_FILE_SIZES FileSizes,
+    BOOLEAN PinAccess,
     PCACHE_MANAGER_CALLBACKS CallBacks,
     PVOID LazyWriterContext
 );
@@ -333,6 +340,29 @@ NTSTATUS
 NTAPI
 CcTryToInitializeFileCache(PFILE_OBJECT FileObject);
 
+FORCEINLINE
+NTSTATUS
+CcRosAcquireVacbLock(
+    _Inout_ PROS_VACB Vacb,
+    _In_ PLARGE_INTEGER Timeout)
+{
+    NTSTATUS Status;
+    Status = KeWaitForSingleObject(&Vacb->Mutex,
+                                   Executive,
+                                   KernelMode,
+                                   FALSE,
+                                   Timeout);
+    return Status;
+}
+
+FORCEINLINE
+VOID
+CcRosReleaseVacbLock(
+    _Inout_ PROS_VACB Vacb)
+{
+    KeReleaseMutex(&Vacb->Mutex, FALSE);
+}
+
 FORCEINLINE
 BOOLEAN
 DoRangesIntersect(