*/
BOOLEAN
NTAPI
-CcMapData(
+CcMapData (
IN PFILE_OBJECT FileObject,
- IN PLARGE_INTEGER FileOffset,
- IN ULONG Length,
- IN ULONG Flags,
- OUT PVOID *pBcb,
- OUT PVOID *pBuffer)
+ IN PLARGE_INTEGER FileOffset,
+ IN ULONG Length,
+ IN ULONG Flags,
+ OUT PVOID *pBcb,
+ OUT PVOID *pBuffer)
{
ULONG ReadOffset;
BOOLEAN Valid;
PINTERNAL_BCB iBcb;
ULONG ROffset;
- DPRINT("CcMapData(FileObject 0x%p, FileOffset %I64x, Length %d, Flags %d,"
+ DPRINT("CcMapData(FileObject 0x%p, FileOffset %I64x, Length %lu, Flags 0x%lx,"
" pBcb 0x%p, pBuffer 0x%p)\n", FileObject, FileOffset->QuadPart,
Length, Flags, pBcb, pBuffer);
Bcb->AllocationSize.QuadPart,
Bcb->FileSize.QuadPart);
- if (ReadOffset % Bcb->CacheSegmentSize + Length > Bcb->CacheSegmentSize)
+ if (ReadOffset % VACB_MAPPING_GRANULARITY + Length > VACB_MAPPING_GRANULARITY)
{
return FALSE;
}
- ROffset = ROUND_DOWN (ReadOffset, Bcb->CacheSegmentSize);
- Status = CcRosRequestCacheSegment(Bcb, ROffset,
- pBuffer, &Valid,
+
+ ROffset = ROUND_DOWN(ReadOffset, VACB_MAPPING_GRANULARITY);
+ Status = CcRosRequestCacheSegment(Bcb,
+ ROffset,
+ pBuffer,
+ &Valid,
&CacheSeg);
if (!NT_SUCCESS(Status))
{
return FALSE;
}
+
if (!Valid)
{
if (!(Flags & MAP_WAIT))
CcRosReleaseCacheSegment(Bcb, CacheSeg, FALSE, FALSE, FALSE);
return FALSE;
}
+
if (!NT_SUCCESS(ReadCacheSegment(CacheSeg)))
{
CcRosReleaseCacheSegment(Bcb, CacheSeg, FALSE, FALSE, FALSE);
- return FALSE;
+ return FALSE;
}
}
- *pBuffer = (PVOID)((ULONG_PTR)(*pBuffer) + (ReadOffset % Bcb->CacheSegmentSize));
+ *pBuffer = (PVOID)((ULONG_PTR)(*pBuffer) + ReadOffset % VACB_MAPPING_GRANULARITY);
iBcb = ExAllocateFromNPagedLookasideList(&iBcbLookasideList);
if (iBcb == NULL)
{
CcRosReleaseCacheSegment(Bcb, CacheSeg, TRUE, FALSE, FALSE);
return FALSE;
}
- memset(iBcb, 0, sizeof(INTERNAL_BCB));
+
+ RtlZeroMemory(iBcb, sizeof(*iBcb));
iBcb->PFCB.NodeTypeCode = 0xDE45; /* Undocumented (CAPTIVE_PUBLIC_BCB_NODETYPECODE) */
iBcb->PFCB.NodeByteSize = sizeof(PUBLIC_BCB);
iBcb->PFCB.MappedLength = Length;
iBcb->Dirty = FALSE;
iBcb->RefCount = 1;
*pBcb = (PVOID)iBcb;
+
return TRUE;
}
BOOLEAN
NTAPI
CcPinMappedData (
- IN PFILE_OBJECT FileObject,
- IN PLARGE_INTEGER FileOffset,
- IN ULONG Length,
- IN ULONG Flags,
- OUT PVOID * Bcb
- )
+ IN PFILE_OBJECT FileObject,
+ IN PLARGE_INTEGER FileOffset,
+ IN ULONG Length,
+ IN ULONG Flags,
+ OUT PVOID * Bcb)
{
- /* no-op for current implementation. */
- return TRUE;
+ /* no-op for current implementation. */
+ return TRUE;
}
/*
BOOLEAN
NTAPI
CcPinRead (
- IN PFILE_OBJECT FileObject,
- IN PLARGE_INTEGER FileOffset,
- IN ULONG Length,
- IN ULONG Flags,
- OUT PVOID * Bcb,
- OUT PVOID * Buffer
- )
+ IN PFILE_OBJECT FileObject,
+ IN PLARGE_INTEGER FileOffset,
+ IN ULONG Length,
+ IN ULONG Flags,
+ OUT PVOID * Bcb,
+ OUT PVOID * Buffer)
{
- if (CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer))
- {
- if (CcPinMappedData(FileObject, FileOffset, Length, Flags, Bcb))
- return TRUE;
- else
- CcUnpinData(Bcb);
- }
- return FALSE;
+ if (CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer))
+ {
+ if (CcPinMappedData(FileObject, FileOffset, Length, Flags, Bcb))
+ return TRUE;
+ else
+ CcUnpinData(Bcb);
+ }
+ return FALSE;
}
/*
BOOLEAN
NTAPI
CcPreparePinWrite (
- IN PFILE_OBJECT FileObject,
- IN PLARGE_INTEGER FileOffset,
- IN ULONG Length,
- IN BOOLEAN Zero,
- IN ULONG Flags,
- OUT PVOID * Bcb,
- OUT PVOID * Buffer
- )
+ IN PFILE_OBJECT FileObject,
+ IN PLARGE_INTEGER FileOffset,
+ IN ULONG Length,
+ IN BOOLEAN Zero,
+ IN ULONG Flags,
+ OUT PVOID * Bcb,
+ OUT PVOID * Buffer)
{
- /*
- * FIXME: This is function is similar to CcPinRead, but doesn't
- * read the data if they're not present. Instead it should just
- * prepare the cache segments and zero them out if Zero == TRUE.
- *
- * For now calling CcPinRead is better than returning error or
- * just having UNIMPLEMENTED here.
- */
- return CcPinRead(FileObject, FileOffset, Length, Flags, Bcb, Buffer);
+ /*
+ * FIXME: This is function is similar to CcPinRead, but doesn't
+ * read the data if they're not present. Instead it should just
+ * prepare the cache segments and zero them out if Zero == TRUE.
+ *
+ * For now calling CcPinRead is better than returning error or
+ * just having UNIMPLEMENTED here.
+ */
+ return CcPinRead(FileObject, FileOffset, Length, Flags, Bcb, Buffer);
}
/*
* @implemented
*/
VOID NTAPI
-CcSetDirtyPinnedData (IN PVOID Bcb,
- IN PLARGE_INTEGER Lsn)
+CcSetDirtyPinnedData (
+ IN PVOID Bcb,
+ IN PLARGE_INTEGER Lsn)
{
- PINTERNAL_BCB iBcb = Bcb;
- iBcb->Dirty = TRUE;
+ PINTERNAL_BCB iBcb = Bcb;
+ iBcb->Dirty = TRUE;
}
* @implemented
*/
VOID NTAPI
-CcUnpinData (IN PVOID Bcb)
+CcUnpinData (
+ IN PVOID Bcb)
{
- PINTERNAL_BCB iBcb = Bcb;
- CcRosReleaseCacheSegment(iBcb->CacheSegment->Bcb, iBcb->CacheSegment, TRUE,
- iBcb->Dirty, FALSE);
- if (--iBcb->RefCount == 0)
- {
- ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
- }
+ PINTERNAL_BCB iBcb = Bcb;
+
+ CcRosReleaseCacheSegment(iBcb->CacheSegment->Bcb,
+ iBcb->CacheSegment,
+ TRUE,
+ iBcb->Dirty,
+ FALSE);
+ if (--iBcb->RefCount == 0)
+ {
+ ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
+ }
}
/*
VOID
NTAPI
CcUnpinDataForThread (
- IN PVOID Bcb,
- IN ERESOURCE_THREAD ResourceThreadId
- )
+ IN PVOID Bcb,
+ IN ERESOURCE_THREAD ResourceThreadId)
{
- UNIMPLEMENTED;
+ UNIMPLEMENTED;
}
/*
VOID
NTAPI
CcRepinBcb (
- IN PVOID Bcb
- )
+ IN PVOID Bcb)
{
- PINTERNAL_BCB iBcb = Bcb;
- iBcb->RefCount++;
+ PINTERNAL_BCB iBcb = Bcb;
+ iBcb->RefCount++;
}
/*
VOID
NTAPI
CcUnpinRepinnedBcb (
- IN PVOID Bcb,
- IN BOOLEAN WriteThrough,
- IN PIO_STATUS_BLOCK IoStatus
- )
+ IN PVOID Bcb,
+ IN BOOLEAN WriteThrough,
+ IN PIO_STATUS_BLOCK IoStatus)
{
- PINTERNAL_BCB iBcb = Bcb;
+ PINTERNAL_BCB iBcb = Bcb;
- if (--iBcb->RefCount == 0)
+ IoStatus->Status = STATUS_SUCCESS;
+ if (--iBcb->RefCount == 0)
{
- IoStatus->Information = 0;
- if (WriteThrough)
+ IoStatus->Information = 0;
+ if (WriteThrough)
{
KeWaitForSingleObject(&iBcb->CacheSegment->Mutex,
Executive,
KernelMode,
FALSE,
NULL);
- if (iBcb->CacheSegment->Dirty)
+ if (iBcb->CacheSegment->Dirty)
{
- IoStatus->Status = CcRosFlushCacheSegment(iBcb->CacheSegment);
+ IoStatus->Status = CcRosFlushCacheSegment(iBcb->CacheSegment);
}
- else
+ else
{
- IoStatus->Status = STATUS_SUCCESS;
+ IoStatus->Status = STATUS_SUCCESS;
}
- KeReleaseMutex(&iBcb->CacheSegment->Mutex, 0);
+ KeReleaseMutex(&iBcb->CacheSegment->Mutex, FALSE);
}
- else
+ else
{
- IoStatus->Status = STATUS_SUCCESS;
+ IoStatus->Status = STATUS_SUCCESS;
}
- ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
+ ExFreeToNPagedLookasideList(&iBcbLookasideList, iBcb);
}
}
projects / reactos.git / blobdiff