Re: [RFC][PATCH 2.6.13-rc6] add Dell Systems Management Base Driver (dcdbas) with sysfs support

[Kyle Moffett]

On Aug 17, 2005, at 01:33:00, Matt Domsch wrote:
> This is conceptually similar to how SCSI Generic (either
> /dev/sg or ioctl(SG_IO)) works (userspace passes in preformated SCSI
> CDBs and gets back the resultant CDBs and extended sense data).  The
> sg driver doesn't look at the data being passed down to any great
> extent.  It doesn't validate that the command will make sense to the
> end device.

This is not true anymore.  Recently the SG driver obtained a basic
form of SCSI command checking to prohibit vendor commands from those
processes without CAP_RAW_IO, even if said process had full access
to the device node itself.


Cheers,
Kyle Moffett

--
Simple things should be simple and complex things should be possible
  -- Alan Kay



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