Re: [PATCH] add sysfs attribute 'carrier' for net devices

[Jesper Juhl]

On Mon, 27 Sep 2004, Stephen Hemminger wrote:

> Date: Mon, 27 Sep 2004 10:29:13 -0700
> From: Stephen Hemminger <shemminger@xxxxxxxx>
> To: Jesper Juhl <juhl-lkml@xxxxxx>
> Cc: linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>,
>     Nico Schottelius <nico-kernel@xxxxxxxxxxxxxxx>
> Subject: Re: [PATCH] add sysfs attribute 'carrier' for net devices
> 
> On Mon, 2004-09-27 at 00:51 +0200, Jesper Juhl wrote:
> >  
> > +static ssize_t show_carrier(struct class_device *dev, char *buf)
> > +{
> > +	struct net_device *net = to_net_dev(dev);
> > +	if (netif_running(net)) {
> > +		if (netif_carrier_ok(net))
> > +			return snprintf(buf, 3, "%d\n", 1);
> > +		else
> > +			return snprintf(buf, 3, "%d\n", 0);
> 
> Using snprintf in this way is kind of silly. since buffer is PAGESIZE.
> The most concise format of this would be:
> 	return sprintf(buf, dec_fmt, !!netif_carrier_ok(dev));
> 

I see your point and I'll create a new patch this evening when I get home 
from work.
Thank you for your feedback.


--
Jesper Juhl



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