static PDEVICE_OBJECT TestDeviceObject;
static KMT_IRP_HANDLER TestIrpHandler;
static FAST_IO_DISPATCH TestFastIoDispatch;
+static BOOLEAN InBehaviourTest;
+
+BOOLEAN ReadCalled;
+LARGE_INTEGER ReadOffset;
+ULONG ReadLength;
static
BOOLEAN
return MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
}
+static
+void
+reset_read(void)
+{
+ ReadCalled = FALSE;
+ ReadOffset.QuadPart = MAXLONGLONG;
+ ReadLength = MAXULONG;
+}
+
+#define ok_read_called(_Offset, _Length) do { \
+ ok(ReadCalled, "CcCopyWrite should have triggerred a read.\n"); \
+ ok_eq_longlong(ReadOffset.QuadPart, _Offset); \
+ ok_eq_ulong(ReadLength, _Length); \
+}while(0)
+
+#define ok_read_not_called() ok(!ReadCalled, "CcCopyWrite shouldn't have triggered a read.\n")
+
+static
+VOID
+Test_CcCopyWrite(PFILE_OBJECT FileObject)
+{
+
+ BOOLEAN Ret;
+ LARGE_INTEGER Offset;
+ CHAR Buffer[10];
+
+ memset(Buffer, 0xAC, 10);
+
+ /* Test bogus file object & file offset */
+ Ret = 'x';
+ KmtStartSeh()
+ Ret = CcCopyWrite(FileObject, NULL, 0, FALSE, NULL);
+ KmtEndSeh(STATUS_ACCESS_VIOLATION);
+ ok_eq_char(Ret, 'x');
+
+ Ret = 'x';
+ Offset.QuadPart = 0;
+ KmtStartSeh()
+ Ret = CcCopyWrite(NULL, &Offset, 10, FALSE, Buffer);
+ KmtEndSeh(STATUS_ACCESS_VIOLATION);
+ ok_eq_char(Ret, 'x');
+
+ /* What happens on invalid buffer */
+ Ret = 'x';
+ Offset.QuadPart = 0;
+ reset_read();
+ KmtStartSeh()
+ Ret = CcCopyWrite(FileObject, &Offset, 0, TRUE, NULL);
+ KmtEndSeh(STATUS_SUCCESS);
+ ok_bool_true(Ret, "CcCopyWrite(0, NULL) should succeed\n");
+ /* When there is nothing to write, there is no reason to read */
+ ok_read_not_called();
+
+ Ret = 'x';
+ Offset.QuadPart = 0;
+ reset_read();
+ KmtStartSeh()
+ Ret = CcCopyWrite(FileObject, &Offset, 10, TRUE, NULL);
+ KmtEndSeh(STATUS_INVALID_USER_BUFFER);
+ ok_eq_char(Ret, 'x');
+ /* This raises an exception, but it actually triggered a read */
+ ok_read_called(0, PAGE_SIZE);
+
+ /* So this one succeeds, as the page is now resident */
+ Ret = 'x';
+ Offset.QuadPart = 0;
+ reset_read();
+ KmtStartSeh()
+ Ret = CcCopyWrite(FileObject, &Offset, 10, FALSE, Buffer);
+ KmtEndSeh(STATUS_SUCCESS);
+ ok_bool_true(Ret, "CcCopyWrite should succeed\n");
+ /* But there was no read triggered, as the page is already resident. */
+ ok_read_not_called();
+
+ /* But this one doesn't */
+ Ret = 'x';
+ Offset.QuadPart = PAGE_SIZE;
+ reset_read();
+ KmtStartSeh()
+ Ret = CcCopyWrite(FileObject, &Offset, 10, FALSE, Buffer);
+ KmtEndSeh(STATUS_SUCCESS);
+ ok_bool_false(Ret, "CcCopyWrite should fail\n");
+ /* But it triggered a read anyway. */
+ ok_read_called(PAGE_SIZE, PAGE_SIZE);
+
+ /* Of course, waiting for it succeeds and triggers the read */
+ Ret = 'x';
+ Offset.QuadPart = PAGE_SIZE * 2;
+ reset_read();
+ KmtStartSeh()
+ Ret = CcCopyWrite(FileObject, &Offset, 10, TRUE, Buffer);
+ KmtEndSeh(STATUS_SUCCESS);
+ ok_bool_true(Ret, "CcCopyWrite should succeed\n");
+ ok_read_called(PAGE_SIZE * 2, PAGE_SIZE);
+}
static
NTSTATUS
IoStack->FileObject->FsContext = Fcb;
IoStack->FileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
- CcInitializeCacheMap(IoStack->FileObject,
+ CcInitializeCacheMap(IoStack->FileObject,
(PCC_FILE_SIZES)&Fcb->Header.AllocationSize,
FALSE, &Callbacks, NULL);
ok((Offset.QuadPart == 0 || Offset.QuadPart == 4096 || Offset.QuadPart == 8192), "Unexpected offset: %I64i\n", Offset.QuadPart);
ok(Length % PAGE_SIZE == 0, "Length is not aligned: %I64i\n", Length);
+ ReadCalled = TRUE;
+ ReadOffset = Offset;
+ ReadLength = Length;
+
ok(Irp->AssociatedIrp.SystemBuffer == NULL, "A SystemBuffer was allocated!\n");
Buffer = MapAndLockUserBuffer(Irp, Length);
ok(Buffer != NULL, "Null pointer!\n");
ULONG Length;
PVOID Buffer;
LARGE_INTEGER Offset;
+ static const UNICODE_STRING BehaviourTestFileName = RTL_CONSTANT_STRING(L"\\BehaviourTestFile");
Offset = IoStack->Parameters.Read.ByteOffset;
Length = IoStack->Parameters.Read.Length;
Fcb = IoStack->FileObject->FsContext;
+ ok_bool_false(InBehaviourTest, "Shouldn't trigger write from CcCopyWrite\n");
+ /* Check special file name */
+ InBehaviourTest = RtlCompareUnicodeString(&IoStack->FileObject->FileName, &BehaviourTestFileName, TRUE) == 0;
+
if (!FlagOn(Irp->Flags, IRP_NOCACHE))
{
BOOLEAN Ret;
ok_irql(PASSIVE_LEVEL);
- Buffer = Irp->AssociatedIrp.SystemBuffer;
- ok(Buffer != NULL, "Null pointer!\n");
-
- Fcb->WriteLength = Length;
-
- _SEH2_TRY
+ if (InBehaviourTest)
{
- Ret = CcCopyWrite(IoStack->FileObject, &Offset, Length, TRUE, Buffer);
- ok_bool_true(Ret, "CcCopyWrite");
+ Test_CcCopyWrite(IoStack->FileObject);
+ Status = Irp->IoStatus.Status = STATUS_SUCCESS;
}
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ else
{
- Irp->IoStatus.Status = _SEH2_GetExceptionCode();
+ Buffer = Irp->AssociatedIrp.SystemBuffer;
+ ok(Buffer != NULL, "Null pointer!\n");
+
+ Fcb->WriteLength = Length;
+
+ _SEH2_TRY
+ {
+ Ret = CcCopyWrite(IoStack->FileObject, &Offset, Length, TRUE, Buffer);
+ ok_bool_true(Ret, "CcCopyWrite");
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ Irp->IoStatus.Status = _SEH2_GetExceptionCode();
+ }
+ _SEH2_END;
+
+ Status = Irp->IoStatus.Status;
}
- _SEH2_END;
-
- Status = Irp->IoStatus.Status;
}
else
{
ok_irql(PASSIVE_LEVEL);
- ok((Offset.QuadPart == 0 || Offset.QuadPart == 4096), "Unexpected offset: %I64i\n", Offset.QuadPart);
- ok_eq_ulong(Length, ROUND_TO_PAGES(Fcb->WriteLength));
+
+ if (InBehaviourTest)
+ {
+ /* We wrote only to the 1st and 3rd page */
+ ok((Offset.QuadPart == 0) || (Offset.QuadPart == PAGE_SIZE * 2), "Expected a non-cached write on 1st or 3rd page\n");
+ /* We wrote that much with CcCopyWrite */
+ ok_eq_ulong(Length, PAGE_SIZE);
+ }
+ else
+ {
+ ok((Offset.QuadPart == 0 || Offset.QuadPart == 4096), "Unexpected offset: %I64i\n", Offset.QuadPart);
+ ok_eq_ulong(Length, ROUND_TO_PAGES(Fcb->WriteLength));
+ }
ok(Irp->AssociatedIrp.SystemBuffer == NULL, "A SystemBuffer was allocated!\n");
Buffer = MapAndLockUserBuffer(Irp, Length);
ok((Mdl->MdlFlags & MDL_IO_PAGE_READ) == 0, "MDL for read paging IO\n");
ok((Irp->Flags & IRP_PAGING_IO) != 0, "Non paging IO\n");
}
+
+ InBehaviourTest = FALSE;
}
else if (IoStack->MajorFunction == IRP_MJ_FLUSH_BUFFERS)
{
projects / reactos.git / blobdiff