Re: [PATCH v2] close_range.2: Add _GNU_SOURCE and unistd.h to SYNOPSIS

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Hi Mark,

On Mon, Feb 12, 2024 at 01:05:31AM +0100, Mark Wielaard wrote:
> > >  .SH SYNOPSIS
> > >  .nf
> > > -.B #include <linux/close_range.h>
> > > +.BR "#define _GNU_SOURCE" "         /* See feature_test_macros(7) */"
> > > +.B #include <unistd.h>
> > > +.P
> > > +.BR "#include <linux/close_range.h>" "  /* For the flags constants */"
> > 
> > Could you please format the comment like other pages that do the same
> > thing?  See for example membarrier(2).
> 
> Sorry, you have to be more explicit what exactly you believe is not
> the same thing that other pages do. membarrier.2 doesn't need a
> _GNU_SOURCE define and I believe I used the comment as other pages
> that do.

Sure; no problem!

When we include a header not for a function but for constants, we
specify which are those constants.  For example, membarrier(2) has

     #include <linux/membarrier.h> /* Definition of MEMBARRIER_* constants */
     #include <sys/syscall.h>      /* Definition of SYS_* constants */

Here, I'd use
     #include <linux/close_range.h> /* Definition of CLOSE_RANGE_* constants */

BTW, I notice that it's near the 80-column limit.  We try to limit
ourselves to 79 columns, for an obscure reason.  For that, we'll need to
use only 1 space before the comment (otherwise, I'd agree to use 2).

Have a lovely night!
Alex

-- 
<https://www.alejandro-colomar.es/>
Looking for a remote C programming job at the moment.

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