ioctl.c File Reference

Perform an IOCTL. More...

#include <wdm.h>
#include "cbm_driver.h"
#include "cbmioctl.h"
#include "iec.h"
#include <parallel.h>

Go to the source code of this file.

Defines
#define	INPUTVALUE(_ttt_)   ((_ttt_ *) Irp->AssociatedIrp.SystemBuffer)
#define	OUTPUTVALUE(_ttt_)   ((_ttt_ *) Irp->AssociatedIrp.SystemBuffer)
Functions
NTSTATUS	cbm_devicecontrol (IN PDEVICE_OBJECT Fdo, IN PIRP Irp)
	Services IOCTLs.
NTSTATUS	cbm_execute_devicecontrol (IN PDEVICE_EXTENSION Pdx, IN PIRP Irp)
	Executes IOCTLs.

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Detailed Description

Perform an IOCTL.

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Author:

Spiro Trikaliotis

Version:

Id

ioctl.c,v 1.35 2006/03/26 14:19:41 trikalio Exp

Definition in file ioctl.c.

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Define Documentation

#define INPUTVALUE (  _ttt_   )     ((_ttt_ *) Irp->AssociatedIrp.SystemBuffer)

This translates the inputbuffer in the corresponding value to be used for giving as parameter Definition at line 315 of file ioctl.c. Referenced by cbm_execute_devicecontrol().

#define OUTPUTVALUE (  _ttt_   )     ((_ttt_ *) Irp->AssociatedIrp.SystemBuffer)

This translates the outputbuffer in the corresponding value to be used for giving as parameter Definition at line 320 of file ioctl.c. Referenced by cbm_execute_devicecontrol().

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Function Documentation

NTSTATUS cbm_devicecontrol (  IN PDEVICE_OBJECT  Fdo, IN PIRP  Irp )

Services IOCTLs. Services IRPs containing the IRP_MJ_DEVICE_CONTROL I/O function code. Parameters: Fdo  Pointer to a DEVICE_OBJECT structure. This is the device object for the target device, previously created by the driver's AddDevice routine. Irp  Pointer to an IRP structure that describes the requested I/O operation. Returns: If the routine succeeds, it returns STATUS_SUCCESS. Otherwise, it return one of the error status values: STATUS_SUCCESS - Success. STATUS_PENDING - Request pending. STATUS_BUFFER_TOO_SMALL - Buffer too small. STATUS_INVALID_PARAMETER - Invalid io control request. The driver's DriverEntry routine stored this routine's address in DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL]. Generally, all Dispatch routines execute in an arbitrary thread context at IRQL PASSIVE_LEVEL, but there are exceptions. Definition at line 115 of file ioctl.c. References CBMCTRL_CLEAR_EOI, CBMCTRL_CLOSE, CBMCTRL_GET_EOI, CBMCTRL_I_INSTALL, CBMCTRL_IEC_POLL, CBMCTRL_IEC_RELEASE, CBMCTRL_IEC_SET, CBMCTRL_IEC_SETRELEASE, CBMCTRL_IEC_WAIT, CBMCTRL_LISTEN, CBMCTRL_OPEN, CBMCTRL_PARBURST_READ, CBMCTRL_PARBURST_READ_TRACK, CBMCTRL_PARBURST_WRITE, CBMCTRL_PARBURST_WRITE_TRACK, CBMCTRL_PARPORT_LOCK, CBMCTRL_PARPORT_UNLOCK, CBMCTRL_PP_READ, CBMCTRL_PP_WRITE, CBMCTRL_RESET, CBMCTRL_TALK, CBMCTRL_UNLISTEN, CBMCTRL_UNTALK, CBMCTRL_UPDATE, DBG_ERROR, DBG_IRPPATH_PROCESS, DBG_PREFIX, FUNC_ENTER, PERF_EVENT_IOCTL_QUEUE, QueueCompleteIrp(), and QueueStartPacket(). Referenced by DriverCommonInit().

NTSTATUS cbm_execute_devicecontrol (  IN PDEVICE_EXTENSION  Pdx, IN PIRP  Irp )

Executes IOCTLs. Executes IRPs containing the IRP_MJ_DEVICE_CONTROL I/O function code. Parameters: Pdx  Pointer to the DEVICE_EXTENSION structure. Irp  Pointer to an IRP structure that describes the requested I/O operation. Returns: If the routine succeeds, it returns STATUS_SUCCESS. Otherwise, it return one of the error status values: STATUS_SUCCESS - Success. STATUS_BUFFER_TOO_SMALL - Buffer too small. This function does not perform any validity checks on the input and output buffer! This should already been done in cbm_devicecontrol. Definition at line 342 of file ioctl.c. References cbm_init_registry(), cbm_install(), cbm_lock(), cbm_unlock(), CBMCTRL_CLEAR_EOI, CBMCTRL_CLOSE, CBMCTRL_GET_EOI, CBMCTRL_I_INSTALL, CBMCTRL_IEC_POLL, CBMCTRL_IEC_RELEASE, CBMCTRL_IEC_SET, CBMCTRL_IEC_SETRELEASE, CBMCTRL_IEC_WAIT, CBMCTRL_LISTEN, CBMCTRL_OPEN, CBMCTRL_PARBURST_READ, CBMCTRL_PARBURST_READ_TRACK, CBMCTRL_PARBURST_WRITE, CBMCTRL_PARBURST_WRITE_TRACK, CBMCTRL_PARPORT_LOCK, CBMCTRL_PARPORT_UNLOCK, CBMCTRL_PP_READ, CBMCTRL_PP_WRITE, CBMCTRL_RESET, CBMCTRL_TALK, CBMCTRL_UNLISTEN, CBMCTRL_UNTALK, CBMCTRL_UPDATE, cbmiec_clear_eoi(), cbmiec_close(), cbmiec_get_eoi(), cbmiec_iec_poll(), cbmiec_iec_release(), cbmiec_iec_set(), cbmiec_iec_setrelease(), cbmiec_iec_wait(), cbmiec_listen(), cbmiec_open(), cbmiec_pp_read(), cbmiec_pp_write(), cbmiec_reset(), cbmiec_talk(), cbmiec_unlisten(), cbmiec_untalk(), DBG_ASSERT, DBG_ERROR, DBG_IRPPATH_COMPLETE, DBG_IRPPATH_EXECUTE, DBG_PREFIX, FUNC_ENTER, INPUTVALUE, OUTPUTVALUE, PERF_EVENT_IOCTL_EXECUTE, and QueueCompleteIrp(). Referenced by cbm_startio().

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