Re: CAM IOCTL issue with 13.1-STABLE

On Tue, Aug 23, 2022 at 09:44:48AM -0400, Alexander Motin wrote:
> Hi Matthew,
> 
> I took a brief look on it and found that CAM compatibility code just 
> does not cover that IOCTL.  That is why when CAM version was bumped it 
> cause the unexpected breakage.  Short term fix would be to rebuild the 
> application to new CAM version, while for proper fix somebody would have 
> to implement the compatibility code for that IOCTL.

I looked at this a bit more, and it seems trivial since
1) for periph drivers, CAMGETPASSTHRU ignores the input CCB, and
2) the CAM version bump from 0x19 to 0x1a does not affect XPT_GDEVLIST
   CCBs.

Note for instance that cam_compat_handle_0x19() is a no-op for
CAMGETPASSTHRU.  So, isn't the patch here sufficient?
https://reviews.freebsd.org/D36389

> On 22.08.2022 14:48, Matthew Grooms wrote:
> > There appears to be a problem with XPT_DEV_MATCH CAM IOCTL calls. This 
> > prevents a bunch of packages on 13.1-STABLE from working correctly. A 
> > bug was filed and Mark J was kind enough to help diagnose the issue, but 
> > it's sitting in unassigned status. Can someone please assign it to the 
> > correct group so it gets some attention?
> > 
> > The FreeBSD bug:
> > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264709
> > 
> > The offending commit ( I think? ):
> > https://cgit.freebsd.org/src/commit/sys/cam/cam_ccb.h?h=stable/13&id=7d7168478380f08b3a7fd58ca7cf83182fae6850 
> 
> -- 
> Alexander Motin
>