Re: [PATCH v2 iptables-nft 1/3] xlate: get rid of escape_quotes

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On Wed, Nov 30, 2022 at 08:47:19AM +0100, Florian Westphal wrote:
> Phil Sutter <phil@xxxxxx> wrote:
> > On Tue, Nov 29, 2022 at 03:05:40PM +0100, Florian Westphal wrote:
> > [...]
> > > diff --git a/extensions/libxt_LOG.c b/extensions/libxt_LOG.c
> > > index e3f4290ba003..b6fe0b2edda1 100644
> > > --- a/extensions/libxt_LOG.c
> > > +++ b/extensions/libxt_LOG.c
> > > @@ -151,12 +151,8 @@ static int LOG_xlate(struct xt_xlate *xl,
> > >  	const char *pname = priority2name(loginfo->level);
> > >  
> > >  	xt_xlate_add(xl, "log");
> > > -	if (strcmp(loginfo->prefix, "") != 0) {
> > > -		if (params->escape_quotes)
> > > -			xt_xlate_add(xl, " prefix \\\"%s\\\"", loginfo->prefix);
> > > -		else
> > > -			xt_xlate_add(xl, " prefix \"%s\"", loginfo->prefix);
> > > -	}
> > > +	if (strcmp(loginfo->prefix, "") != 0)
> > > +		xt_xlate_add(xl, " prefix \"%s\"", loginfo->prefix);
> > 
> > Use the occasion and replace the strcmp() call with a check for first
> > array elem?
> 
> Can do, but gcc should do that substitution too.

Ah, I didn't know that.

> > > +	bool				escape_quotes; /* not used anymore, retained for ABI */
> > >  };
> > 
> > We *could* rename the variable to intentionally break API so people
> > notice. OTOH, escape_quotes will always be false which is exactly what
> > we need.
> 
> Dunno.  I suggest to keep it and remove it once we change ABI for some
> other reason.

ACK.

Thanks, Phil



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