dispatch.c File Reference

#include "classp.h"

Include dependency graph for dispatch.c:

Go to the source code of this file.

Functions
VOID	ClassInitializeDispatchTables (PCLASS_DRIVER_EXTENSION DriverExtension)
NTSTATUS NTAPI	ClassGlobalDispatch (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
NTSTATUS NTAPI	ClassDispatchUnimplemented (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)

Variables
DRIVER_DISPATCH	ClassDispatchUnimplemented

Function Documentation

ClassDispatchUnimplemented()

NTSTATUS NTAPI ClassDispatchUnimplemented	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 89 of file dispatch.c.

{
    UNREFERENCED_PARAMETER( DeviceObject );
 
    //
    // Simply store the appropriate status, complete the request, and return
    // the same status stored in the packet.
    //
 
    if ((IoGetCurrentIrpStackLocation(Irp))->MajorFunction == IRP_MJ_POWER) {
        PoStartNextPowerIrp(Irp);
    }
    Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
    IoCompleteRequest( Irp, IO_NO_INCREMENT );
    return STATUS_INVALID_DEVICE_REQUEST;
}

ClassGlobalDispatch()

NTSTATUS NTAPI ClassGlobalDispatch	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 73 of file dispatch.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
    PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation(Irp);
    // Code Analysis cannot analyze the code paths specific to clients.
    _Analysis_assume_(FALSE);
    return (commonExtension->DispatchTable[irpStack->MajorFunction])(DeviceObject, Irp);
 
}

Referenced by _IRQL_requires_max_().

ClassInitializeDispatchTables()

VOID ClassInitializeDispatchTables

(

PCLASS_DRIVER_EXTENSION

DriverExtension

)

Definition at line 38 of file dispatch.c.

{
    ULONG idx;
 
    PAGED_CODE();
 
    //
    // Initialize the standard device dispatch table
    //
 
    for (idx = 0; idx <= IRP_MJ_MAXIMUM_FUNCTION; idx++) {
        DriverExtension->DeviceMajorFunctionTable[idx] = ClassDispatchUnimplemented;
    }
 
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_CREATE]         = ClassCreateClose;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_CLOSE]          = ClassCreateClose;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_READ]           = ClassReadWrite;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_WRITE]          = ClassReadWrite;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_DEVICE_CONTROL] = ClassDeviceControlDispatch;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_SCSI]           = ClassInternalIoControl;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_SHUTDOWN]       = ClassShutdownFlush;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_FLUSH_BUFFERS]  = ClassShutdownFlush;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_PNP]            = ClassDispatchPnp;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_POWER]          = ClassDispatchPower;
    DriverExtension->DeviceMajorFunctionTable[IRP_MJ_SYSTEM_CONTROL] = ClassSystemControl;
 
 
    return;
}

Referenced by _IRQL_requires_max_().

Variable Documentation

ClassDispatchUnimplemented

DRIVER_DISPATCH ClassDispatchUnimplemented

Definition at line 30 of file dispatch.c.

Referenced by ClassInitializeDispatchTables().