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sys: FspLockUserBuffer: now acts directly on the IRP

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This commit is contained in:
Bill Zissimopoulos
2016-03-18 15:36:44 -07:00
parent 3d6397871d
commit 57460d7452
5 changed files with 20 additions and 30 deletions
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11
src/sys/wq.c
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@ -20,14 +20,13 @@ NTSTATUS FspWqCreateAndPostIrpWorkItem(PIRP Irp,
/* probe and lock the user buffer (if not an MDL request) */
PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
if (0 == Irp->MdlAddress &&
(IRP_MJ_READ == IrpSp->MajorFunction || IRP_MJ_WRITE == IrpSp->MajorFunction) &&
if ((IRP_MJ_READ == IrpSp->MajorFunction || IRP_MJ_WRITE == IrpSp->MajorFunction) &&
!FlagOn(IrpSp->MinorFunction, IRP_MN_MDL))
{
Result = FspLockUserBuffer(Irp->UserBuffer, IrpSp->Parameters.Write.Length,
Irp->RequestorMode,
IRP_MJ_READ == IrpSp->MajorFunction ? IoWriteAccess : IoReadAccess,
&Irp->MdlAddress);
if (IRP_MJ_READ == IrpSp->MajorFunction)
Result = FspLockUserBuffer(Irp, IrpSp->Parameters.Read.Length, IoWriteAccess);
else
Result = FspLockUserBuffer(Irp, IrpSp->Parameters.Write.Length, IoReadAccess);
if (!NT_SUCCESS(Result))
return Result;
}