mac-tip/x86-asm-source/SCSIID.ASM

84 lines
2.0 KiB
NASM
Raw Normal View History

2021-11-20 04:24:24 +00:00
Here is some code that will take a handle to an open partition and return
the SCSI ID. For example, if you opened \\.\D: and called the following
code, it will return the SCSI ID for that drive letter.
This code is kernel-mode, but can easly be translated to native NT by
changing the ZwXxx() calls to NtXxx() calls. I assume you can make a fairly
easy Win32 implementation since this function shows the IOCTL and data
structure to use.
Have fun...
// Get scsi address information about a device. This includes
// the port, bus, id, and lun, as well as the shortname of the miniport
// driver that owns the device.
//
// Arguments:
//
// Handle - handle to open device.
//
// ScsiAddress - receives port, bus, id, and lun for the device described
// by Handle.
//
// ScsiAdapterName - receives pointer to buffer containing shortname
// for miniport driver that owns the device (ie, aha154x).
// The caller must free this buffer via SpMemFree().
//
// Return Value:
//
// TRUE - scsi address information was determined successfully.
// FALSE - error determining scsi address information.
BOOLEAN GetScsiAddress
(
IN HANDLE Handle,
OUT PSCSI_ADDRESS ScsiAddress,
OUT PWSTR *ScsiAdapterName
)
{
NTSTATUS Status;
PWSTR MiniportName = NULL;
IO_STATUS_BLOCK IoStatusBlock;
Status = ZwDeviceIoControlFile
(
Handle,
NULL,
NULL,
NULL,
&IoStatusBlock,
IOCTL_SCSI_GET_ADDRESS,
NULL,
0,
ScsiAddress,
sizeof (SCSI_ADDRESS)
);
if (!NT_SUCCESS(Status))
{
KdPrint(("SETUP: Unable to get scsi address info (%lx)\n",Status));
return (FALSE);
}
// We can get the miniport name from the scsi port information list
// we built earlier.
if(ScsiAddress->PortNumber < ScsiPortCount)
MiniportName = ScsiPortInfo[ScsiAddress->PortNumber].MiniportName;
else
{
// This should not happen.
ASSERT(ScsiAddress->PortNumber < ScsiPortCount);
MiniportName = (PWSTR)TemporaryBuffer;
}
*ScsiAdapterName = DupString(MiniportName);
return (TRUE);
}