84 lines
2.0 KiB
NASM
84 lines
2.0 KiB
NASM
Here is some code that will take a handle to an open partition and return
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the SCSI ID. For example, if you opened \\.\D: and called the following
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code, it will return the SCSI ID for that drive letter.
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This code is kernel-mode, but can easly be translated to native NT by
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changing the ZwXxx() calls to NtXxx() calls. I assume you can make a fairly
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easy Win32 implementation since this function shows the IOCTL and data
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structure to use.
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Have fun...
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// Get scsi address information about a device. This includes
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// the port, bus, id, and lun, as well as the shortname of the miniport
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// driver that owns the device.
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//
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// Arguments:
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//
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// Handle - handle to open device.
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//
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// ScsiAddress - receives port, bus, id, and lun for the device described
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// by Handle.
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//
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// ScsiAdapterName - receives pointer to buffer containing shortname
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// for miniport driver that owns the device (ie, aha154x).
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// The caller must free this buffer via SpMemFree().
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//
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// Return Value:
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//
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// TRUE - scsi address information was determined successfully.
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// FALSE - error determining scsi address information.
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BOOLEAN GetScsiAddress
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(
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IN HANDLE Handle,
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OUT PSCSI_ADDRESS ScsiAddress,
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OUT PWSTR *ScsiAdapterName
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)
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{
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NTSTATUS Status;
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PWSTR MiniportName = NULL;
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IO_STATUS_BLOCK IoStatusBlock;
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Status = ZwDeviceIoControlFile
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(
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Handle,
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NULL,
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NULL,
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NULL,
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&IoStatusBlock,
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IOCTL_SCSI_GET_ADDRESS,
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NULL,
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0,
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ScsiAddress,
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sizeof (SCSI_ADDRESS)
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);
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if (!NT_SUCCESS(Status))
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{
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KdPrint(("SETUP: Unable to get scsi address info (%lx)\n",Status));
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return (FALSE);
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}
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// We can get the miniport name from the scsi port information list
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// we built earlier.
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if(ScsiAddress->PortNumber < ScsiPortCount)
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MiniportName = ScsiPortInfo[ScsiAddress->PortNumber].MiniportName;
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else
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{
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// This should not happen.
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ASSERT(ScsiAddress->PortNumber < ScsiPortCount);
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MiniportName = (PWSTR)TemporaryBuffer;
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}
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*ScsiAdapterName = DupString(MiniportName);
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return (TRUE);
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}
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