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| NTSTATUS CompleteRequest(IN PIRP irp,
IN NTSTATUS status,
IN ULONG_PTR info)
{
irp->IoStatus.Status = status;
irp->IoStatus.Information = info;
IoCompleteRequest(irp, IO_NO_INCREMENT);
return status;
}
NTSTATUS DispatchDefaultFunc(IN PDEVICE_OBJECT fido, IN PIRP irp)
{
PDEVICE_EXTENSION pdx = NULL;
PIO_STACK_LOCATION stack = NULL;
NTSTATUS status = 0;
UCHAR type = 0;
pdx = (PDEVICE_EXTENSION)fido->DeviceExtension;
stack = IoGetCurrentIrpStackLocation(irp);
type = stack->MajorFunction;
if (type < ARRAYSIZE(IRPNAME)) {
DbgPrint("DispatchAny::=>[%s]\n", IRPNAME[type]);
} else {
DbgPrint("DispatchAny::=>[%X]\n", type);
}
status = IoAcquireRemoveLock(&pdx->RemoveLock, irp);
if (!NT_SUCCESS(status)) {
return CompleteRequest(irp, status, 0);
}
IoSkipCurrentIrpStackLocation(irp);
status = IoCallDriver(pdx->LowerDeviceObject, irp);
IoReleaseRemoveLock(&pdx->RemoveLock, irp);
return status;
}
NTSTATUS DispatchPowerFunc(IN PDEVICE_OBJECT fido, IN PIRP irp)
{
PDEVICE_EXTENSION pdx = NULL;
NTSTATUS status = 0;
PIO_STACK_LOCATION stack = NULL;
ULONG fcn = 0;
pdx = (PDEVICE_EXTENSION)fido->DeviceExtension;
stack = IoGetCurrentIrpStackLocation(irp);
fcn = stack->MinorFunction;
if (fcn == IRP_MN_SET_POWER ||
fcn == IRP_MN_QUERY_POWER) {
ULONG context = 0;
POWER_STATE_TYPE type = (POWER_STATE_TYPE)0;
context = stack->Parameters.Power.SystemContext;
type = stack->Parameters.Power.Type;
DbgPrint("DispatchPower::=>[%s]", FCNNAME[fcn]);
if (type == SystemPowerState) {
DbgPrint(">SystemPowerState[%s]\n",
DEVSTATE[stack->Parameters.Power.State.SystemState]);
} else {
DbgPrint(">DevicePowerState[%s]\n",
DEVSTATE[stack->Parameters.Power.State.DeviceState]);
}
} else if (fcn < ARRAYSIZE(FCNNAME)) {
DbgPrint("DispatchPower::=>[%s]\n", FCNNAME[fcn]);
} else {
DbgPrint("DispatchPower::=>[%X]\n", fcn);
}
PoStartNextPowerIrp(irp);
status = IoAcquireRemoveLock(&pdx->RemoveLock, irp);
if (!NT_SUCCESS(status)) {
return CompleteRequest(irp, status, 0);
}
IoSkipCurrentIrpStackLocation(irp);
status = PoCallDriver(pdx->LowerDeviceObject, irp);
IoReleaseRemoveLock(&pdx->RemoveLock, irp);
return status;
}
VOID RemoveDevice(IN PDEVICE_OBJECT fido)
{
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION) fido->DeviceExtension;
if (pdx->LowerDeviceObject) {
IoDetachDevice(pdx->LowerDeviceObject);
}
IoDeleteDevice(fido);
}
NTSTATUS StartDevComplRoutine(PDEVICE_OBJECT fido,
PIRP Irp,
PDEVICE_EXTENSION pdx)
{
if (Irp->PendingReturned) {
IoMarkIrpPending(Irp);
}
if (pdx->LowerDeviceObject->Characteristics & FILE_REMOVABLE_MEDIA) {
fido->Characteristics |= FILE_REMOVABLE_MEDIA;
}
IoReleaseRemoveLock(&pdx->RemoveLock, Irp);
return STATUS_SUCCESS;
}
NTSTATUS UsageNotificComplRoutine(PDEVICE_OBJECT fido,
PIRP Irp,
PDEVICE_EXTENSION pdx)
{
if (Irp->PendingReturned) {
IoMarkIrpPending(Irp);
}
if (!(pdx->LowerDeviceObject->Flags & DO_POWER_PAGABLE)) {
fido->Flags &= ~DO_POWER_PAGABLE;
}
IoReleaseRemoveLock(&pdx->RemoveLock, Irp);
return STATUS_SUCCESS;
}
NTSTATUS DispatchPnpFunc(IN PDEVICE_OBJECT fido, IN PIRP irp)
{
ULONG fcn = 0;
NTSTATUS status = 0;
PDEVICE_EXTENSION pdx = NULL;
PIO_STACK_LOCATION stack = NULL;
pdx = (PDEVICE_EXTENSION)fido->DeviceExtension;
stack = IoGetCurrentIrpStackLocation(irp);
fcn = stack->MinorFunction;
status = IoAcquireRemoveLock(&pdx->RemoveLock, irp);
if (!NT_SUCCESS(status)) {
return CompleteRequest(irp, status, 0);
}
if (fcn < ARRAYSIZE(PNPNAME)) {
DbgPrint("DispatchPnp::=>[%s]\n", PNPNAME[fcn]);
} else {
DbgPrint("DispatchPnp::=>[%X]\n", fcn);
}
if (fcn == IRP_MN_DEVICE_USAGE_NOTIFICATION) {
if (!fido->AttachedDevice || (fido->AttachedDevice->Flags &
DO_POWER_PAGABLE)) {
fido->Flags |= DO_POWER_PAGABLE;
}
IoCopyCurrentIrpStackLocationToNext(irp);
IoSetCompletionRoutine(irp,
(PIO_COMPLETION_ROUTINE)UsageNotificComplRoutine,
(PVOID) pdx, TRUE, TRUE, TRUE);
return IoCallDriver(pdx->LowerDeviceObject, irp);
}
if (fcn == IRP_MN_START_DEVICE) {
IoCopyCurrentIrpStackLocationToNext(irp);
IoSetCompletionRoutine(irp,
(PIO_COMPLETION_ROUTINE)StartDevComplRoutine,
(PVOID) pdx, TRUE, TRUE, TRUE);
return IoCallDriver(pdx->LowerDeviceObject, irp);
}
if (fcn == IRP_MN_REMOVE_DEVICE) {
IoSkipCurrentIrpStackLocation(irp);
status = IoCallDriver(pdx->LowerDeviceObject, irp);
IoReleaseRemoveLockAndWait(&pdx->RemoveLock, irp);
RemoveDevice(fido);
return status;
}
IoSkipCurrentIrpStackLocation(irp);
status = IoCallDriver(pdx->LowerDeviceObject, irp);
IoReleaseRemoveLock(&pdx->RemoveLock, irp);
return status;
} |
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Сообщение от Oleg Shvets
