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Implement IoForwardIrpSynchronously

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Use it in root bus

svn path=/trunk/; revision=30979
This commit is contained in:
Hervé Poussineau 2007-12-03 09:03:38 +00:00
parent 3e89cd6ca5
commit 3f543f3230
2 changed files with 51 additions and 49 deletions
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46
reactos/ntoskrnl/io/iomgr/irp.c
View file

@ -1411,16 +1411,56 @@ IofCompleteRequest(IN PIRP Irp,
}
}
NTSTATUS
NTAPI
IopSynchronousCompletion(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context)
{
if (Irp->PendingReturned)
KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
return STATUS_MORE_PROCESSING_REQUIRED;
}
/*
* @unimplemented
* @implemented
*/
BOOLEAN
NTAPI
IoForwardIrpSynchronously(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
UNIMPLEMENTED;
return FALSE;
KEVENT Event;
NTSTATUS Status;
/* Check if next stack location is available */
if (Irp->CurrentLocation < Irp->StackCount)
{
/* No more stack location */
return FALSE;
}
/* Initialize event */
KeInitializeEvent(&Event, NotificationEvent, FALSE);
/* Copy stack location for next driver */
IoCopyCurrentIrpStackLocationToNext(Irp);
/* Set a completion routine, which will signal the event */
IoSetCompletionRoutine(Irp, IopSynchronousCompletion, &Event, TRUE, TRUE, TRUE);
/* Call next driver */
Status = IoCallDriver(DeviceObject, Irp);
/* Check if irp is pending */
if (Status == STATUS_PENDING)
{
/* Yes, wait for its completion */
KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
}
return TRUE;
}
/*

54
reactos/ntoskrnl/io/pnpmgr/pnproot.c
View file

@ -226,48 +226,6 @@ cleanup:
return Status;
}
static NTSTATUS STDCALL
ForwardIrpAndWaitCompletion(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context)
{
if (Irp->PendingReturned)
KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
return STATUS_MORE_PROCESSING_REQUIRED;
}
static NTSTATUS
ForwardIrpAndWait(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PDEVICE_OBJECT LowerDevice;
KEVENT Event;
NTSTATUS Status;
ASSERT(((PPNPROOT_COMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO);
LowerDevice = ((PPNPROOT_FDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->Ldo;
ASSERT(LowerDevice);
KeInitializeEvent(&Event, NotificationEvent, FALSE);
IoCopyCurrentIrpStackLocationToNext(Irp);
DPRINT("Calling lower device %p [%wZ]\n", LowerDevice, &LowerDevice->DriverObject->DriverName);
IoSetCompletionRoutine(Irp, ForwardIrpAndWaitCompletion, &Event, TRUE, TRUE, TRUE);
Status = IoCallDriver(LowerDevice, Irp);
if (Status == STATUS_PENDING)
{
Status = KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
if (NT_SUCCESS(Status))
Status = Irp->IoStatus.Status;
}
return Status;
}
static NTSTATUS NTAPI
QueryStringCallback(
IN PWSTR ValueName,
@ -702,10 +660,14 @@ PnpRootFdoPnpControl(
case IRP_MN_START_DEVICE:
DPRINT("IRP_MJ_PNP / IRP_MN_START_DEVICE\n");
Status = ForwardIrpAndWait(DeviceObject, Irp);
if (NT_SUCCESS(Status))
DeviceExtension->State = dsStarted;
Status = STATUS_SUCCESS;
if (!IoForwardIrpSynchronously(DeviceExtension->Ldo, Irp))
Status = STATUS_UNSUCCESSFUL;
else
{
Status = Irp->IoStatus.Status;
if (NT_SUCCESS(Status))
DeviceExtension->State = dsStarted;
}
break;
case IRP_MN_STOP_DEVICE: