376 lines
12 KiB
C
376 lines
12 KiB
C
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#include <nt.h>
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#include <ntddscsi.h>
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#include <ntdddisk.h>
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#include <ntddcdrm.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <stdio.h>
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#include <process.h>
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#include <memory.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <scsi.h>
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typedef struct _MODE_SENSE_PASS_THROUGH {
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SCSI_PASS_THROUGH Srb;
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ULONG Reserved;
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UCHAR SenseData[32];
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UCHAR DataBuffer[256];
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} MODE_SENSE_PASS_THROUGH, *PMODE_SENSE_PASS_THROUGH;
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VOID
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Usage(
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VOID
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);
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int __cdecl
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main( int argc, char **argv )
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{
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ULONG portNumber = 0;
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ULONG physicalDrive = 0,
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selectedDrive = 0xFFFFFFFF;
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HANDLE volumeHandle,driveHandle;
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UNICODE_STRING unicodeString;
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OBJECT_ATTRIBUTES objectAttributes;
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NTSTATUS ntStatus;
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PSCSI_ADAPTER_BUS_INFO adapterInfo;
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PSCSI_BUS_DATA busData;
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PSCSI_INQUIRY_DATA inquiryData;
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PINQUIRYDATA deviceInquiryData;
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ULONG bytesTransferred;
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ULONG i, j;
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PCHAR pageData,pch;
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UCHAR modeOperation,
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cacheSettings;
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INT args;
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BOOLEAN disableCache = FALSE,
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enableCache = FALSE;
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BOOLEAN displayAll = TRUE;
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UCHAR buffer[32];
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UCHAR driveBuffer[20];
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CHAR driver[9];
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MODE_SENSE_PASS_THROUGH modeSenseData;
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if ( argc > 3 ) {
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Usage();
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exit(1);
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} else if (argc > 1 ) {
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displayAll = FALSE;
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args = 1;
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while ( args < argc ) {
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pch = argv[args];
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if ( *pch == '-' ) {
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BOOL exitSwitch = FALSE;
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pch++;
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switch( *pch ) {
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case 'd':
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disableCache = TRUE;
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break;
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case 'e':
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enableCache = TRUE;
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break;
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case '?':
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Usage();
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exit(1);
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break;
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default:
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Usage();
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exit(1);
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}
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pch++;
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} else {
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if (!isdigit(*pch)) {
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Usage();
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exit(1);
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}
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selectedDrive = atol(pch);
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}
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args++;
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}
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}
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printf("\nDrive Port Bus TID LUN Vendor ReadCache WriteCache\n");
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printf( "--------------------------------------------------------------------");
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while (TRUE) {
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memset( buffer, 0, sizeof( buffer ) );
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sprintf( buffer,"\\\\.\\Scsi%d:",portNumber);
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//
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// Open the volume with the DOS name.
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//
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volumeHandle = CreateFile(buffer,
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GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL,
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OPEN_EXISTING,
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0,
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0);
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if( volumeHandle == INVALID_HANDLE_VALUE ) {
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break;
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}
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//
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// Allocate memory to store the inquiry data.
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//
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adapterInfo = (PSCSI_ADAPTER_BUS_INFO)malloc( 0x400 );
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if (adapterInfo == NULL) {
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printf( "Can't allocate memory for bus data\n" );
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CloseHandle( volumeHandle );
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return 1;
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}
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//
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// Issue device control to get configuration information.
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//
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if (!DeviceIoControl( volumeHandle,
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IOCTL_SCSI_GET_INQUIRY_DATA,
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NULL,
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0,
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adapterInfo,
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0x400,
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&bytesTransferred,
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NULL)) {
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fprintf(stderr, "IOCTL_SCSI_GET_INQUIRY_DATA failed [Error %d].\n", GetLastError() );
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free(adapterInfo);
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CloseHandle( volumeHandle );
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return 2;
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}
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//
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// Display devices on buses.
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//
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for (i=0; i < adapterInfo->NumberOfBuses; i++) {
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busData = &adapterInfo->BusData[i];
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inquiryData = (PSCSI_INQUIRY_DATA)((PUCHAR)adapterInfo + busData->InquiryDataOffset);
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for (j=0; j<busData->NumberOfLogicalUnits; j++) {
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//
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// Make sure VendorId string is null terminated.
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//
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deviceInquiryData = (PINQUIRYDATA)&inquiryData->InquiryData[0];
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//
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// Determine the perpherial type.
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//
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if (deviceInquiryData->DeviceType == DIRECT_ACCESS_DEVICE) {
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deviceInquiryData->ProductRevisionLevel[0] = '\0';
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if (displayAll || (selectedDrive == physicalDrive)) {
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printf("\n%2d %2d %2d %2d %2d ",
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physicalDrive,
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portNumber,
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inquiryData->PathId,
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inquiryData->TargetId,
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inquiryData->Lun);
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//
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// Display product information.
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//
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printf(" %s", deviceInquiryData->VendorId);
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//
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// Open handle to the PhysicalDrive
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//
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sprintf(driveBuffer,"\\\\.\\PhysicalDrive%d",physicalDrive);
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driveHandle = CreateFile(driveBuffer,
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL,
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OPEN_EXISTING,
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0,
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NULL);
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if (driveHandle == INVALID_HANDLE_VALUE) {
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printf("CreateFile for %s failed. Error = %x\n",
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driveBuffer,
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GetLastError() );
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return 3;
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}
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//
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// Issue mode sense to see if caches are enabled.
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//
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ZeroMemory(&modeSenseData, sizeof(MODE_SENSE_PASS_THROUGH));
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modeSenseData.Srb.Length = sizeof(SCSI_PASS_THROUGH);
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modeSenseData.Srb.CdbLength = 6;
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modeSenseData.Srb.DataIn = SCSI_IOCTL_DATA_IN;
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modeSenseData.Srb.DataBufferOffset = offsetof(MODE_SENSE_PASS_THROUGH, DataBuffer);
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modeSenseData.Srb.SenseInfoOffset = offsetof(MODE_SENSE_PASS_THROUGH, SenseData);
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modeSenseData.Srb.DataTransferLength = 0xFF;
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modeSenseData.Srb.TimeOutValue = 10;
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ZeroMemory(&modeSenseData.Srb.Cdb, 16);
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modeSenseData.Srb.Cdb[0] = 0x1A;
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modeSenseData.Srb.Cdb[2] = 8;
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modeSenseData.Srb.Cdb[4] = 0xFF;
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if (!DeviceIoControl(driveHandle,
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IOCTL_SCSI_PASS_THROUGH_DIRECT,
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&modeSenseData,
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sizeof(modeSenseData),
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&modeSenseData,
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sizeof(modeSenseData),
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&bytesTransferred,
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FALSE)) {
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fprintf(stderr,"Mode sense failed. Error = %x\n",
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GetLastError() );
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return 4;
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}
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//
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// Display current values
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//
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pageData = modeSenseData.DataBuffer;
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(ULONG_PTR)pageData += 6 + pageData[3];
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cacheSettings = *pageData;
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if (displayAll || (physicalDrive == selectedDrive)) {
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printf(" %s ", (cacheSettings & 1) ? "Disabled" : "Enabled");
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printf(" %s", (cacheSettings & 4) ? "Enabled" : "Disabled");
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}
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if ((enableCache || disableCache) && (physicalDrive == selectedDrive)) {
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//
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// Build mode select - caching page.
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//
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// Clean out reserved areas of data buffer and update others
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//
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modeSenseData.Srb.SenseInfoLength = 32;
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pageData = modeSenseData.DataBuffer;
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modeSenseData.Srb.Cdb[4] = *pageData + 1;
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modeSenseData.Srb.Cdb[2] = 0x00;
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modeSenseData.Srb.Cdb[1] = 0x11;
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*pageData = 0;
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(ULONG_PTR)pageData += 4 + pageData[3];
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*pageData &= 0x3F;
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pageData++;
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pageData++;
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*pageData &= 0x07;
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modeSenseData.DataBuffer[5] = 0x00;
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modeSenseData.DataBuffer[6] = 0x00;
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modeSenseData.DataBuffer[7] = 0x00;
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modeSenseData.Srb.DataIn = SCSI_IOCTL_DATA_OUT;
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modeSenseData.Srb.DataTransferLength = modeSenseData.Srb.Cdb[4];
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if (disableCache) {
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//
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// Disable write cache
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//
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*pageData &= 0x03;
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} else {
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//
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// Enable the cache.
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//
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*pageData |= 0x04;
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}
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modeSenseData.Srb.Cdb[0] = 0x15;
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if (!DeviceIoControl(driveHandle,
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IOCTL_SCSI_PASS_THROUGH_DIRECT,
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&modeSenseData,
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sizeof(modeSenseData),
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&modeSenseData,
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sizeof(modeSenseData),
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&bytesTransferred,
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FALSE)) {
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fprintf(stderr,"Mode select failed. Error = %x\n",
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GetLastError() );
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} else {
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printf("\nWrite cache successfully %s\n", (enableCache ? "Enabled" : "Disabled"));
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}
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}
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CloseHandle(driveHandle );
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}
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physicalDrive++;
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}
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//
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// Get next device data.
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//
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inquiryData =
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(PSCSI_INQUIRY_DATA)((PUCHAR)adapterInfo + inquiryData->NextInquiryDataOffset);
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}
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}
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free (adapterInfo);
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CloseHandle(volumeHandle );
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portNumber++;
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}
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printf("\n");
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return 0;
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}
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VOID Usage(
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VOID
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) {
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fprintf(stderr,"WCACHE: Usage wcache [-options] <PhysicalDrive Number>\n");
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fprintf(stderr,"\n");
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fprintf(stderr," where options are: e - Enable Write Cache for the <PhysicalDrive>\n");
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fprintf(stderr," d - Disable Write Cache for the <PhysicalDrive>\n");
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fprintf(stderr," dumps current values for all drives when invoked with no options\n");
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fprintf(stderr,"\n");
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}
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