Re: [libusb] How to use USB SCSI Pass Through Interface in libusb?

[Alan S. <st...@ro...>]

On Sat, 16 Jan 2016, Tao Wang wrote:

> Hi, everyone,
> 
> I'm thinking about a cross platform solution to communicate with Pentax
> camera, which using USB (Mass Storage) SCSI Pass-Through Interface, with
> 'F0' vendor specific SCSI commands.

SCSI Pass-Through has nothing to do with USB.  You can use it with any 
SCSI device that supports it, USB or not.

> The current solution is via '/sys/class/scsi_generic' with `ioctl(fd,
> SG_IO, xxx)`, but it's not a portable solution.

Check out the sg3_utils package.  It has programs for both Linux and 
Windows, maybe other operating systems as well.

> I didn't find any example of how to use SPTI via libusb. Can anyone give me
> some help about how to do it? Thanks.

There is no good way to do it using libusb.  Libusb simply isn't the 
appropriate tool for this purpose.

Alan Stern