Re: [PATCH v3 07/20] sg: move header to uapi section

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On Mon, 2019-08-12 at 07:24 -0700, Christoph Hellwig wrote:
> [note: question for the linux-spdx audience below]
> 
> > -
> >  #ifdef __KERNEL__
> >  extern int sg_big_buff; /* for sysctl */
> >  #endif
> 
> FYI, these __KERNEL__ ifdefs in non-uapi headers should go away.
> 
> >  
> > +/*
> > + * In version 3.9.01 of the sg driver, this file was spilt in two,
> > with the
> > + * bulk of the user space interface being placed in the file being
> > included
> > + * in the following line.
> > + */
> > +#include <uapi/scsi/sg.h>
> 
> Splitting uapi headers is standard practive, no need for the comment,
> especially not with a meaningless driver version number.
> 
> > diff --git a/include/uapi/scsi/sg.h b/include/uapi/scsi/sg.h
> > new file mode 100644
> > index 000000000000..072b45bd732f
> > --- /dev/null
> > +++ b/include/uapi/scsi/sg.h
> > @@ -0,0 +1,329 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> 
> This needs the syscall noticed for uapi headers.  FYI, what is our
> stance of just adding that notice to headers newly moved to UAPI?
> Do we need agreement from everyone who touched the file?  Or just
> after we started the split and SPDX annotations, as in this case
> this header used to be available to user programs?

It's pretty much covered by the original linux COPYING file, which
contains the systemcall exception for everything.  I think our
intention is that this still applies globally, so things can be moved
into the UAPI without additional permissions.

James




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