125 lines
3.1 KiB
C++
125 lines
3.1 KiB
C++
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#include <windows.h>
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#include <winioctl.h>
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//functions to get the SCSI ID from a drive letter
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//thanks to Microsoft for making this a nightmare...
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// begin ntddscsi.h definitions
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#define IOCTL_SCSI_BASE \
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FILE_DEVICE_CONTROLLER
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#define IOCTL_SCSI_GET_ADDRESS CTL_CODE \
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( \
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IOCTL_SCSI_BASE, \
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0x0406, \
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METHOD_BUFFERED, \
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FILE_ANY_ACCESS \
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)
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#define IOCTL_SCSI_GET_INQUIRY_DATA \
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CTL_CODE( \
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IOCTL_SCSI_BASE, \
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0x0403, \
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METHOD_BUFFERED, \
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FILE_ANY_ACCESS \
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)
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typedef struct _SCSI_ADDRESS {
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ULONG Length;
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UCHAR PortNumber;
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UCHAR PathId;
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UCHAR TargetId;
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UCHAR Lun;
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}SCSI_ADDRESS, *PSCSI_ADDRESS;
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//
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// Define SCSI information.
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// Used with the IOCTL_SCSI_GET_INQUIRY_DATA IOCTL.
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//
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typedef struct _SCSI_BUS_DATA {
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UCHAR NumberOfLogicalUnits;
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UCHAR InitiatorBusId;
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ULONG InquiryDataOffset;
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}SCSI_BUS_DATA, *PSCSI_BUS_DATA;
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//
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// Define SCSI adapter bus information structure..
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// Used with the IOCTL_SCSI_GET_INQUIRY_DATA IOCTL.
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//
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typedef struct _SCSI_ADAPTER_BUS_INFO {
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UCHAR NumberOfBuses;
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SCSI_BUS_DATA BusData[1];
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} SCSI_ADAPTER_BUS_INFO, *PSCSI_ADAPTER_BUS_INFO;
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//
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// Define SCSI adapter bus information.
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// Used with the IOCTL_SCSI_GET_INQUIRY_DATA IOCTL.
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//
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typedef struct _SCSI_INQUIRY_DATA {
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UCHAR PathId;
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UCHAR TargetId;
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UCHAR Lun;
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BOOLEAN DeviceClaimed;
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ULONG InquiryDataLength;
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ULONG NextInquiryDataOffset;
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UCHAR InquiryData[1];
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}SCSI_INQUIRY_DATA, *PSCSI_INQUIRY_DATA;
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// end ntddscsi.h definitions
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int getSCSIIDFromDrive(char driveletter, int *host, int *id, int *lun)
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{
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//FUCKO: only works on NT :(
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SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
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wchar_t tmp[128] = {0};
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wsprintf(tmp,L"\\\\.\\%c:",driveletter);
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HANDLE device = CreateFile(
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tmp,
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0, // no particular access necessary
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// for the IO control we're using
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FILE_SHARE_READ
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| FILE_SHARE_WRITE
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| FILE_SHARE_DELETE,
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0, // no security attrs - ignored anyway
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OPEN_EXISTING,
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0, // no attributes or flags
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0 // no template
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);
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if( device == INVALID_HANDLE_VALUE ) return 0;
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SCSI_ADDRESS sa;
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ULONG bytes;
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BOOL status = DeviceIoControl(
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device,
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IOCTL_SCSI_GET_ADDRESS,
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0, 0, // no input buffer
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&sa, sizeof(sa), // output args
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&bytes, // bytes returned
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0 // ignored
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);
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if (!status && 50 == GetLastError())
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{
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*host = ((driveletter > 'a') ? (driveletter - 'a') : (driveletter - 'A'));
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*id = 0;
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*lun = 0;
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CloseHandle(device);
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return 1;
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}
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CloseHandle(device);
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if( !status ) return 0;
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*host=sa.PortNumber;
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*id=sa.TargetId;
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*lun=sa.Lun;
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return 1;
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}
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