Leaked source code of windows server 2003
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/*++
Copyright (C) Microsoft Corporation, 1996 - 1999
Module Name:
smcioctl.c
Abstract:
This module handles all IOCTL requests to the smart card reader.
Environment:
Kernel mode only.
Notes:
This module is shared by Windows NT and Windows 9x
Revision History:
- Created June 1997 by Klaus Schutz
--*/
#define _ISO_TABLES_
#ifndef SMCLIB_VXD
#ifndef SMCLIB_CE
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <ntddk.h>
#endif
#endif
#include "smclib.h"
#define IOCTL_SMARTCARD_DEBUG SCARD_CTL_CODE(98)
#define CheckUserBuffer(_len_) \
if (SmartcardExtension->IoRequest.ReplyBuffer == NULL || \
SmartcardExtension->IoRequest.ReplyBufferLength < (_len_)) { \
status = STATUS_BUFFER_TOO_SMALL; \
break; \
}
#define CheckMinCardStatus(_status_) \
if (SmartcardExtension->ReaderCapabilities.CurrentState < (_status_)) { \
status = STATUS_INVALID_DEVICE_STATE; \
break; \
}
#define ReturnULong(_value_) \
{ \
CheckUserBuffer(sizeof(ULONG)) \
*(PULONG) SmartcardExtension->IoRequest.ReplyBuffer = (_value_); \
*SmartcardExtension->IoRequest.Information = sizeof(ULONG); \
}
#define ReturnUChar(_value_) \
{ \
CheckUserBuffer(sizeof(UCHAR)) \
*(PUCHAR) SmartcardExtension->IoRequest.ReplyBuffer = (_value_); \
*SmartcardExtension->IoRequest.Information = sizeof(UCHAR); \
}
#define DIM(_array_) (sizeof(_array_) / sizeof(_array_[0]))
PTCHAR
MapIoControlCodeToString(
ULONG IoControlCode
)
{
ULONG i;
static struct {
ULONG IoControlCode;
PTCHAR String;
} IoControlList[] = {
IOCTL_SMARTCARD_POWER, TEXT("POWER"),
IOCTL_SMARTCARD_GET_ATTRIBUTE, TEXT("GET_ATTRIBUTE"),
IOCTL_SMARTCARD_SET_ATTRIBUTE, TEXT("SET_ATTRIBUTE"),
IOCTL_SMARTCARD_CONFISCATE, TEXT("CONFISCATE"),
IOCTL_SMARTCARD_TRANSMIT, TEXT("TRANSMIT"),
IOCTL_SMARTCARD_EJECT, TEXT("EJECT"),
IOCTL_SMARTCARD_SWALLOW, TEXT("SWALLOW"),
IOCTL_SMARTCARD_IS_PRESENT, TEXT("IS_PRESENT"),
IOCTL_SMARTCARD_IS_ABSENT, TEXT("IS_ABSENT"),
IOCTL_SMARTCARD_SET_PROTOCOL, TEXT("SET_PROTOCOL"),
IOCTL_SMARTCARD_GET_STATE, TEXT("GET_STATE"),
IOCTL_SMARTCARD_GET_LAST_ERROR, TEXT("GET_LAST_ERROR")
};
for (i = 0; i < DIM(IoControlList); i++) {
if (IoControlCode == IoControlList[i].IoControlCode) {
return IoControlList[i].String;
}
}
return TEXT("*** UNKNOWN ***");
}
NTSTATUS
SmartcardDeviceIoControl(
PSMARTCARD_EXTENSION SmartcardExtension
)
/*++
Routine Description:
This routine handles the smart card lib specific io control requests.
The driver has to call the function from the driver's io control request.
It checks the parameters of the call and depending on the type of
the call returns the requested value or calls the driver in order
to perform an operation like POWER or TRANSMIT.
NOTE: This function is used by Windows NT and VxD driver
Arguments:
SmartcardExtension - The pointer to the smart card data struct
Return Value:
NTSTATUS value
--*/
{
NTSTATUS status = STATUS_SUCCESS;
#ifdef SMCLIB_NT
KIRQL Irql;
#endif
switch (SmartcardExtension->MajorIoControlCode) {
#if DEBUG
ULONG CurrentDebugLevel, bytesTransferred;
#endif
PSCARD_IO_REQUEST scardIoRequest;
case IOCTL_SMARTCARD_GET_ATTRIBUTE:
//
// Please refer to the Interoperrability standard for ICC
//
switch (SmartcardExtension->MinorIoControlCode) {
case SCARD_ATTR_VENDOR_NAME:
CheckUserBuffer(SmartcardExtension->VendorAttr.VendorName.Length);
RtlCopyMemory(
SmartcardExtension->IoRequest.ReplyBuffer,
SmartcardExtension->VendorAttr.VendorName.Buffer,
SmartcardExtension->VendorAttr.VendorName.Length
);
*SmartcardExtension->IoRequest.Information =
SmartcardExtension->VendorAttr.VendorName.Length;
break;
case SCARD_ATTR_VENDOR_IFD_TYPE:
CheckUserBuffer(SmartcardExtension->VendorAttr.IfdType.Length);
RtlCopyMemory(
SmartcardExtension->IoRequest.ReplyBuffer,
SmartcardExtension->VendorAttr.IfdType.Buffer,
SmartcardExtension->VendorAttr.IfdType.Length
);
*SmartcardExtension->IoRequest.Information =
SmartcardExtension->VendorAttr.IfdType.Length;
break;
case SCARD_ATTR_VENDOR_IFD_VERSION:
ReturnULong(
SmartcardExtension->VendorAttr.IfdVersion.BuildNumber |
SmartcardExtension->VendorAttr.IfdVersion.VersionMinor << 16 |
SmartcardExtension->VendorAttr.IfdVersion.VersionMajor << 24
);
break;
case SCARD_ATTR_VENDOR_IFD_SERIAL_NO:
if (SmartcardExtension->VendorAttr.IfdSerialNo.Length == 0) {
status = STATUS_NOT_SUPPORTED;
} else {
CheckUserBuffer(SmartcardExtension->VendorAttr.IfdSerialNo.Length);
RtlCopyMemory(
SmartcardExtension->IoRequest.ReplyBuffer,
SmartcardExtension->VendorAttr.IfdSerialNo.Buffer,
SmartcardExtension->VendorAttr.IfdSerialNo.Length
);
*SmartcardExtension->IoRequest.Information =
SmartcardExtension->VendorAttr.IfdSerialNo.Length;
}
break;
case SCARD_ATTR_DEVICE_UNIT:
// Return the unit number of this device
ReturnULong(SmartcardExtension->VendorAttr.UnitNo);
break;
case SCARD_ATTR_CHANNEL_ID:
//
// Return reader type / channel id in form
// 0xDDDDCCCC where D is reader type and C is channel number
//
ReturnULong(
SmartcardExtension->ReaderCapabilities.ReaderType << 16l |
SmartcardExtension->ReaderCapabilities.Channel
);
break;
case SCARD_ATTR_CHARACTERISTICS:
// Return mechanical characteristics of the reader
ReturnULong(
SmartcardExtension->ReaderCapabilities.MechProperties
)
break;
case SCARD_ATTR_CURRENT_PROTOCOL_TYPE:
// Return the currently selected protocol
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnULong(
SmartcardExtension->CardCapabilities.Protocol.Selected
);
break;
case SCARD_ATTR_CURRENT_CLK:
//
// Return the current ICC clock freq. encoded as little
// endian integer value (3.58 MHZ is 3580)
//
CheckMinCardStatus(SCARD_NEGOTIABLE);
if(SmartcardExtension->CardCapabilities.PtsData.CLKFrequency) {
ReturnULong(SmartcardExtension->CardCapabilities.PtsData.CLKFrequency);
} else {
ReturnULong(SmartcardExtension->ReaderCapabilities.CLKFrequency.Default);
}
break;
case SCARD_ATTR_CURRENT_F:
// Return the current F value encoded as little endian integer
CheckMinCardStatus(SCARD_NEGOTIABLE);
if (SmartcardExtension->CardCapabilities.Fl >=
DIM(ClockRateConversion)) {
status = STATUS_UNRECOGNIZED_MEDIA;
break;
}
ASSERT(SmartcardExtension->CardCapabilities.Fl <
DIM(ClockRateConversion));
ReturnULong(
SmartcardExtension->CardCapabilities.ClockRateConversion[
SmartcardExtension->CardCapabilities.Fl
].F
);
break;
case SCARD_ATTR_CURRENT_D:
//
// Return the current D value encoded as little endian integer
// in units of 1/64. So return 1 if D is 1/64.
//
CheckMinCardStatus(SCARD_NEGOTIABLE);
ASSERT(
SmartcardExtension->CardCapabilities.Dl <
DIM(BitRateAdjustment)
);
ASSERT(
SmartcardExtension->CardCapabilities.BitRateAdjustment[
SmartcardExtension->CardCapabilities.Dl
].DDivisor != 0
);
//
// Check the current value of Dl.
// It should definitely not be greater than the array bounds
// and the value in the array is not allowed to be zero
//
if (SmartcardExtension->CardCapabilities.Dl >=
DIM(BitRateAdjustment) ||
SmartcardExtension->CardCapabilities.BitRateAdjustment[
SmartcardExtension->CardCapabilities.Dl
].DDivisor == 0) {
status = STATUS_UNRECOGNIZED_MEDIA;
break;
}
ReturnULong(
SmartcardExtension->CardCapabilities.BitRateAdjustment[
SmartcardExtension->CardCapabilities.Dl
].DNumerator /
SmartcardExtension->CardCapabilities.BitRateAdjustment[
SmartcardExtension->CardCapabilities.Dl
].DDivisor
);
break;
case SCARD_ATTR_CURRENT_W:
// Return the work waiting time (integer) for T=0
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnULong(SmartcardExtension->CardCapabilities.T0.WI);
break;
case SCARD_ATTR_CURRENT_N:
// Return extra guard time
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnULong(SmartcardExtension->CardCapabilities.N);
break;
case SCARD_ATTR_CURRENT_IFSC:
// Return the current information field size card
CheckMinCardStatus(SCARD_NEGOTIABLE);
if (SmartcardExtension->T1.IFSC) {
ReturnULong(SmartcardExtension->T1.IFSC);
} else {
ReturnULong(SmartcardExtension->CardCapabilities.T1.IFSC);
}
break;
case SCARD_ATTR_CURRENT_IFSD:
// Return the current information field size card
CheckMinCardStatus(SCARD_NEGOTIABLE);
if (SmartcardExtension->T1.IFSD) {
ReturnULong(SmartcardExtension->T1.IFSD);
} else {
ReturnULong(SmartcardExtension->ReaderCapabilities.MaxIFSD);
}
break;
case SCARD_ATTR_CURRENT_BWT:
// Return the current block waiting time for T=1
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnULong(SmartcardExtension->CardCapabilities.T1.BWI);
break;
case SCARD_ATTR_CURRENT_CWT:
// Return the current character waiting time for T=1
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnULong(SmartcardExtension->CardCapabilities.T1.CWI);
break;
case SCARD_ATTR_CURRENT_EBC_ENCODING:
// Return the current error checking method
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnULong(SmartcardExtension->CardCapabilities.T1.EDC);
break;
case SCARD_ATTR_DEFAULT_CLK:
ReturnULong(
SmartcardExtension->ReaderCapabilities.CLKFrequency.Default
);
break;
case SCARD_ATTR_MAX_CLK:
ReturnULong(
SmartcardExtension->ReaderCapabilities.CLKFrequency.Max
);
break;
case SCARD_ATTR_DEFAULT_DATA_RATE:
ReturnULong(
SmartcardExtension->ReaderCapabilities.DataRate.Default
);
break;
case SCARD_ATTR_MAX_DATA_RATE:
ReturnULong(
SmartcardExtension->ReaderCapabilities.DataRate.Max
);
break;
case SCARD_ATTR_ATR_STRING:
// Return ATR of currently inserted card
CheckUserBuffer(MAXIMUM_ATR_LENGTH);
CheckMinCardStatus(SCARD_NEGOTIABLE);
RtlCopyMemory(
SmartcardExtension->IoRequest.ReplyBuffer,
SmartcardExtension->CardCapabilities.ATR.Buffer,
SmartcardExtension->CardCapabilities.ATR.Length
);
*SmartcardExtension->IoRequest.Information =
SmartcardExtension->CardCapabilities.ATR.Length;
break;
case SCARD_ATTR_ICC_TYPE_PER_ATR:
//
// Return ICC type, based on ATR.
// We currently support only T=0 and T=1, so return
// 1 for those protocols otherwise 0 (unknown ICC type)
//
CheckMinCardStatus(SCARD_NEGOTIABLE);
ReturnUChar(
((SmartcardExtension->CardCapabilities.Protocol.Selected &
(SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1)) ? 1 : 0)
);
break;
case SCARD_ATTR_ICC_PRESENCE:
// Return the status of the card
AccessUnsafeData(&Irql);
switch (SmartcardExtension->ReaderCapabilities.CurrentState) {
case SCARD_UNKNOWN:
status = STATUS_INVALID_DEVICE_STATE;
break;
case SCARD_ABSENT:
ReturnUChar(0);
break;
case SCARD_PRESENT:
ReturnUChar(1);
break;
default:
ReturnUChar(2);
break;
}
EndAccessUnsafeData(Irql);
break;
case SCARD_ATTR_ICC_INTERFACE_STATUS:
// Return if card contacts are active
ReturnUChar(
(SmartcardExtension->ReaderCapabilities.CurrentState >=
SCARD_SWALLOWED ? (UCHAR) -1 : 0)
);
break;
case SCARD_ATTR_PROTOCOL_TYPES:
ReturnULong(
SmartcardExtension->ReaderCapabilities.SupportedProtocols
);
break;
case SCARD_ATTR_MAX_IFSD:
ReturnULong(
SmartcardExtension->ReaderCapabilities.MaxIFSD
);
break;
case SCARD_ATTR_POWER_MGMT_SUPPORT:
ReturnULong(
SmartcardExtension->ReaderCapabilities.PowerMgmtSupport
);
break;
default:
status = STATUS_NOT_SUPPORTED;
break;
}
break;
case IOCTL_SMARTCARD_SET_ATTRIBUTE:
switch (SmartcardExtension->MinorIoControlCode) {
case SCARD_ATTR_SUPRESS_T1_IFS_REQUEST:
//
// The card does not support ifs request, so
// we turn off ifs negotiation
//
SmartcardExtension->T1.State = T1_START;
break;
default:
status = STATUS_NOT_SUPPORTED;
break;
}
break;
#if defined(DEBUG) && defined(SMCLIB_NT)
case IOCTL_SMARTCARD_GET_PERF_CNTR:
switch (SmartcardExtension->MinorIoControlCode) {
case SCARD_PERF_NUM_TRANSMISSIONS:
ReturnULong(SmartcardExtension->PerfInfo->NumTransmissions);
break;
case SCARD_PERF_BYTES_TRANSMITTED:
ReturnULong(
SmartcardExtension->PerfInfo->BytesSent +
SmartcardExtension->PerfInfo->BytesReceived
);
break;
case SCARD_PERF_TRANSMISSION_TIME:
ReturnULong(
(ULONG) (SmartcardExtension->PerfInfo->IoTickCount.QuadPart *
KeQueryTimeIncrement() /
10)
);
break;
}
break;
#endif
case IOCTL_SMARTCARD_CONFISCATE:
if (SmartcardExtension->ReaderFunction[RDF_CARD_CONFISCATE] == NULL) {
status = STATUS_NOT_SUPPORTED;
break;
}
status = SmartcardExtension->ReaderFunction[RDF_CARD_CONFISCATE](
SmartcardExtension
);
break;
case IOCTL_SMARTCARD_EJECT:
if (SmartcardExtension->ReaderFunction[RDF_CARD_EJECT] == NULL) {
status = STATUS_NOT_SUPPORTED;
break;
}
status = SmartcardExtension->ReaderFunction[RDF_CARD_EJECT](
SmartcardExtension
);
break;
#ifdef SMCLIB_VXD
case IOCTL_SMARTCARD_GET_LAST_ERROR:
//
// Return error of the last overlapped operation
// Used for Windows VxD's that can't return the
// error code within IoComplete like NT can
//
ReturnULong(SmartcardExtension->LastError);
break;
#endif
case IOCTL_SMARTCARD_GET_STATE:
// Return current state of the smartcard
CheckUserBuffer(sizeof(ULONG));
AccessUnsafeData(&Irql);
*(PULONG) SmartcardExtension->IoRequest.ReplyBuffer =
SmartcardExtension->ReaderCapabilities.CurrentState;
*SmartcardExtension->IoRequest.Information =
sizeof(ULONG);
EndAccessUnsafeData(Irql);
break;
case IOCTL_SMARTCARD_POWER:
if (SmartcardExtension->ReaderFunction[RDF_CARD_POWER] == NULL) {
status = STATUS_NOT_SUPPORTED;
break;
}
// Check if a card is present
if (SmartcardExtension->ReaderCapabilities.CurrentState <=
SCARD_ABSENT) {
status = STATUS_INVALID_DEVICE_STATE;
break;
}
// Initialize the card capabilities struct
SmartcardInitializeCardCapabilities(
SmartcardExtension
);
switch (SmartcardExtension->MinorIoControlCode) {
case SCARD_COLD_RESET:
case SCARD_WARM_RESET:
CheckUserBuffer(MAXIMUM_ATR_LENGTH);
case SCARD_POWER_DOWN:
status = SmartcardExtension->ReaderFunction[RDF_CARD_POWER](
SmartcardExtension
);
break;
default:
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
break;
case IOCTL_SMARTCARD_SET_PROTOCOL:
//
// Since we return the selected protocol, the return buffer
// must be large enough to hold the result
//
CheckUserBuffer(sizeof(ULONG));
// Set the protocol to be used with the current card
if (SmartcardExtension->ReaderFunction[RDF_SET_PROTOCOL] == NULL) {
status = STATUS_NOT_SUPPORTED;
break;
}
// Check if we're already in specific state
if (SmartcardExtension->ReaderCapabilities.CurrentState == SCARD_SPECIFIC &&
(SmartcardExtension->CardCapabilities.Protocol.Selected &
SmartcardExtension->MinorIoControlCode)) {
status = STATUS_SUCCESS;
break;
}
// Check if a card is present and not already in specific mode
if (SmartcardExtension->ReaderCapabilities.CurrentState <=
SCARD_ABSENT) {
status = STATUS_INVALID_DEVICE_STATE;
break;
}
// We only check the ATR when the user selects T=0 or T=1
if (SmartcardExtension->MinorIoControlCode & (SCARD_PROTOCOL_Tx)) {
if (SmartcardExtension->MinorIoControlCode & SCARD_PROTOCOL_DEFAULT) {
// Select default PTS values
SmartcardExtension->CardCapabilities.PtsData.Type = PTS_TYPE_DEFAULT;
} else {
// Select best possible PTS data
SmartcardExtension->CardCapabilities.PtsData.Type = PTS_TYPE_OPTIMAL;
}
// Evaluate ATR
status = SmartcardUpdateCardCapabilities(SmartcardExtension);
} else {
// caller doesn't want neither T=0 nor T=1 -> force callback
status = STATUS_UNRECOGNIZED_MEDIA;
}
if (status == STATUS_UNRECOGNIZED_MEDIA &&
SmartcardExtension->ReaderFunction[RDF_ATR_PARSE] != NULL) {
// let the driver evaluate the ATR, since we don't know it
status = SmartcardExtension->ReaderFunction[RDF_ATR_PARSE](
SmartcardExtension
);
}
if (status != STATUS_SUCCESS) {
// Evaluation of the ATR failed It doesn't make sense to continue
break;
}
// Check if card is now in the right status
if (SmartcardExtension->ReaderCapabilities.CurrentState <
SCARD_NEGOTIABLE) {
status = STATUS_INVALID_DEVICE_STATE;
break;
}
//
// Check if the user tries to select a protocol that
// the card doesn't support
//
if ((SmartcardExtension->CardCapabilities.Protocol.Supported &
SmartcardExtension->MinorIoControlCode) == 0) {
//
// Since the card does not support the request protocol
// we need to set back any automatic seletions done by
// SmartcardUpdateCardCapabilities()
//
SmartcardExtension->ReaderCapabilities.CurrentState = SCARD_NEGOTIABLE;
SmartcardExtension->CardCapabilities.Protocol.Selected = 0;
status = STATUS_NOT_SUPPORTED;
break;
}
status = SmartcardExtension->ReaderFunction[RDF_SET_PROTOCOL](
SmartcardExtension
);
break;
case IOCTL_SMARTCARD_TRANSMIT:
if (SmartcardExtension->ReaderFunction[RDF_TRANSMIT] == NULL) {
status = STATUS_NOT_SUPPORTED;
break;
}
//
// Check if card is in the right status
//
if (SmartcardExtension->ReaderCapabilities.CurrentState !=
SCARD_SPECIFIC) {
status = STATUS_INVALID_DEVICE_STATE;
break;
}
if (SmartcardExtension->IoRequest.RequestBufferLength <
sizeof(SCARD_IO_REQUEST)) {
status = STATUS_INVALID_PARAMETER;
break;
}
//
// Check if the requested io-protocol matches
// the prev. seleced protocol
//
scardIoRequest = (PSCARD_IO_REQUEST)
SmartcardExtension->IoRequest.RequestBuffer;
if (scardIoRequest->dwProtocol !=
SmartcardExtension->CardCapabilities.Protocol.Selected) {
status = STATUS_INVALID_DEVICE_STATE;
break;
}
SmartcardExtension->SmartcardRequest.BufferLength = 0;
#if defined(DEBUG) && defined(SMCLIB_NT)
SmartcardExtension->PerfInfo->NumTransmissions += 1;
if (SmartcardExtension->IoRequest.RequestBufferLength >=
sizeof(SCARD_IO_REQUEST)) {
bytesTransferred =
SmartcardExtension->IoRequest.RequestBufferLength -
sizeof(SCARD_IO_REQUEST);
SmartcardExtension->PerfInfo->BytesSent +=
bytesTransferred;
}
KeQueryTickCount(&SmartcardExtension->PerfInfo->TickStart);
#endif
status = SmartcardExtension->ReaderFunction[RDF_TRANSMIT](
SmartcardExtension
);
#if defined(DEBUG) && defined(SMCLIB_NT)
KeQueryTickCount(&SmartcardExtension->PerfInfo->TickEnd);
if (*SmartcardExtension->IoRequest.Information >=
sizeof(SCARD_IO_REQUEST)) {
SmartcardExtension->PerfInfo->BytesReceived +=
*SmartcardExtension->IoRequest.Information -
sizeof(SCARD_IO_REQUEST);
bytesTransferred +=
*SmartcardExtension->IoRequest.Information -
sizeof(SCARD_IO_REQUEST);
}
SmartcardExtension->PerfInfo->IoTickCount.QuadPart +=
SmartcardExtension->PerfInfo->TickEnd.QuadPart -
SmartcardExtension->PerfInfo->TickStart.QuadPart;
if (FALSE) {
ULONG timeInMilliSec = (ULONG)
((SmartcardExtension->PerfInfo->TickEnd.QuadPart -
SmartcardExtension->PerfInfo->TickStart.QuadPart) *
KeQueryTimeIncrement() /
10000);
// check for a transferrate of < 400 bps
if (status == STATUS_SUCCESS &&
timeInMilliSec > 0 &&
bytesTransferred * 5 < timeInMilliSec * 2) {
SmartcardDebug(
DEBUG_PERF,
("%s!SmartcardDeviceControl: Datarate for reader %*s was %3ld Baud (%3ld)\n",
DRIVER_NAME,
SmartcardExtension->VendorAttr.VendorName.Length,
SmartcardExtension->VendorAttr.VendorName.Buffer,
bytesTransferred * 1000 / timeInMilliSec,
bytesTransferred)
);
}
}
#endif
break;
case IOCTL_SMARTCARD_SWALLOW:
if (SmartcardExtension->ReaderFunction[RDF_READER_SWALLOW] == NULL) {
status = STATUS_NOT_SUPPORTED;
break;
}
status = SmartcardExtension->ReaderFunction[RDF_READER_SWALLOW](
SmartcardExtension
);
break;
#if DEBUG
case IOCTL_SMARTCARD_DEBUG:
//
// Toggle debug bit
//
CurrentDebugLevel =
SmartcardGetDebugLevel();
SmartcardSetDebugLevel(
SmartcardExtension->MinorIoControlCode ^ CurrentDebugLevel
);
break;
#endif
default:
//
// check if the bit for a vendor ioctl is set and if the driver
// has registered a callback function
//
if ((SmartcardExtension->MajorIoControlCode & CTL_CODE(0, 2048, 0, 0)) == 0 ||
SmartcardExtension->ReaderFunction[RDF_IOCTL_VENDOR] == NULL) {
status = STATUS_INVALID_DEVICE_REQUEST;
} else {
//
// Call the driver if it has registered a callback for vendor calls
//
status = SmartcardExtension->ReaderFunction[RDF_IOCTL_VENDOR](
SmartcardExtension
);
}
break;
} // end switch
return status;
}