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[NTOSKRNL] Use captured variable to check parameters in NtRead/WriteFile

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This commit is contained in:
Pierre Schweitzer
2018-10-04 10:45:10 +02:00
parent c444231b87
commit 44155053cd
1 changed files with 4 additions and 4 deletions
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ntoskrnl/io/iomgr/iofunc.c
+4 -4
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@@ -2633,7 +2633,7 @@ NtReadFile(IN HANDLE FileHandle,
{
/* Fail if ByteOffset is not sector size aligned */
if ((DeviceObject->SectorSize != 0) &&
(ByteOffset->QuadPart % DeviceObject->SectorSize != 0))
(CapturedByteOffset.QuadPart % DeviceObject->SectorSize != 0))
{
/* Release the file object and and fail */
ObDereferenceObject(FileObject);
@@ -3670,11 +3670,11 @@ NtWriteFile(IN HANDLE FileHandle,
{
/* Fail if ByteOffset is not sector size aligned */
if ((DeviceObject->SectorSize != 0) &&
(ByteOffset->QuadPart % DeviceObject->SectorSize != 0))
(CapturedByteOffset.QuadPart % DeviceObject->SectorSize != 0))
{
/* Only if that's not specific values for synchronous IO */
if ((ByteOffset->QuadPart != FILE_WRITE_TO_END_OF_FILE) &&
(ByteOffset->QuadPart != FILE_USE_FILE_POINTER_POSITION ||
if ((CapturedByteOffset.QuadPart != FILE_WRITE_TO_END_OF_FILE) &&
(CapturedByteOffset.QuadPart != FILE_USE_FILE_POINTER_POSITION ||
!BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO)))
{
/* Release the file object and and fail */