How to send scsi command using sd interface ?

[Sergey Vichik]

Hello,

If any body knows how to send SCSI command using sd file : for example
/dev/sda,
Please let me know .

I tried ioctl() using SCSI_IOCTL_SEND_COMMAND command, it doesn't  work.

SCSI_IOCTL_SEND_COMMAND equals to 1,  it seems to be too small value for
such ioctl command.

Any ideas ?
Thank you.

Sergey.

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