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sys: FspVolumeTransact: support both METHOD_BUFFERED and METHOD_OUT_DIRECT

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This commit is contained in:
Bill Zissimopoulos 2016-02-15 16:12:19 -08:00
parent 678f175713
commit 45a0f97805
1 changed files with 10 additions and 17 deletions
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27
src/sys/volume.c
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@ -510,7 +510,7 @@ NTSTATUS FspVolumeTransact(
ULONG InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
ULONG OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;
PVOID InputBuffer = Irp->AssociatedIrp.SystemBuffer;
PVOID OutputBuffer;
PVOID OutputBuffer = 0;
if (0 != InputBufferLength &&
FSP_FSCTL_DEFAULT_ALIGN_UP(sizeof(FSP_FSCTL_TRANSACT_RSP)) > InputBufferLength)
return STATUS_INVALID_PARAMETER;
@ -589,30 +589,23 @@ NTSTATUS FspVolumeTransact(
switch (ControlCode & 3)
{
case METHOD_OUT_DIRECT:
if (0 == Irp->MdlAddress)
{
Irp->IoStatus.Information = 0;
Result = STATUS_SUCCESS;
goto exit;
}
OutputBuffer = MmGetMdlVirtualAddress(Irp->MdlAddress);
if (0 != Irp->MdlAddress)
OutputBuffer = MmGetMdlVirtualAddress(Irp->MdlAddress);
break;
case METHOD_BUFFERED:
if (0 == OutputBufferLength)
{
Irp->IoStatus.Information = 0;
Result = STATUS_SUCCESS;
goto exit;
}
OutputBuffer = Irp->AssociatedIrp.SystemBuffer;
if (0 != OutputBufferLength)
OutputBuffer = Irp->AssociatedIrp.SystemBuffer;
break;
default:
ASSERT(0);
break;
}
if (0 == OutputBuffer)
{
Irp->IoStatus.Information = 0;
Result = STATUS_INVALID_PARAMETER;
Result = STATUS_SUCCESS;
goto exit;
}
ASSERT(0 != OutputBuffer);
/* wait for an IRP to arrive */
KeQuerySystemTime(&Timeout);