netdev - Re: iproute2 tc: Print qdisc, stats, class, filter info to string rather than FILE

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Message-ID: <20150107234608.GA1073@angus-think.lan>
Date:	Thu, 8 Jan 2015 01:46:08 +0200
From:	Vadim Kochan <vadim4j@...il.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
Cc:	Vadim Kochan <vadim4j@...il.com>, netdev@...r.kernel.org
Subject: Re: iproute2 tc: Print qdisc, stats, class, filter info to string
 rather than FILE

On Wed, Jan 07, 2015 at 03:08:28PM -0800, Stephen Hemminger wrote:
> On Wed, 7 Jan 2015 23:53:31 +0200
> Vadim Kochan <vadim4j@...il.com> wrote:
> 
> > Hi,
> > 
> > I'd like to make possible to generate plot info about class hierarchy
> > with qdisc, filters, stats info, but I see that all this staffs are
> > printed to 'FILE *fp' which makes this hard to implement and seems to me
> > that it should be changed to be printed to 'char *s' (memory safety
> > should be considered by asprintf or similar), so this is a big change
> > but all this is possible and I ready to do it, but before do it I'd like
> > to ask if this could be acceptable as idea.
> > 
> > BUT maybe someone can advise me easier solution ?
> > 
> > Regards,
> > --
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> 
> Rather than screen scraping tc command, why not use libmnl and get the
> data you want programmatically.

I'd like to have text info from tc on screen and output on the other
data format to be the same, just only for this.
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