Date: Sun, 08 Jan 2006 13:53:01 -0500
From: Ben Collins <ben.collins@ubuntu.com>
Subject: Re: [PATCH 15/15] kconf: Check for eof from input stream.
In-reply-to: <200601081734.30349.zippel@linux-m68k.org>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: linux-kernel@vger.kernel.org
Message-id: <1136746381.1043.10.camel@grayson>
Organization: Ubuntu Linux
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 <200601081734.30349.zippel@linux-m68k.org>
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On Sun, 2006-01-08 at 17:34 +0100, Roman Zippel wrote:
> Hi,
> 
> On Wednesday 04 January 2006 23:01, Ben Collins wrote:
> 
> > +static char *fgets_check_stream(char *s, int size, FILE *stream)
> > +{
> > +	char *ret = fgets(s, size, stream);
> > +
> > +	if (ret == NULL && feof(stream)) {
> > +		printf(_("aborted!\n\n"));
> > +		printf(_("Console input is closed. "));
> > +		printf(_("Run 'make oldconfig' to update configuration.\n\n"));
> > +		exit(1);
> > +	}
> > +
> > +	return ret;
> > +}
> 
> What problem does this solve? conf should finish normally anyway and just set 
> everything to the default.

It shouldn't, and it doesn't (that's what defconfig does, I believe).

Anyway, the problem is that if there is no terminal (e.g. stdout is
redirected to a file, and stdin is closed), then kconf loops forever
trying to get an answer (NULL is not the same as "").

-- 
   Ben Collins <ben.collins@ubuntu.com>
   Developer
   Ubuntu Linux

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