linux-kernel - Re: tty: add 'active' sysfs attribute to tty0 and console device

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Message-ID: <20101119184150.GA8997@boole.suse.de>
Date:	Fri, 19 Nov 2010 19:41:50 +0100
From:	"Dr. Werner Fink" <werner@...e.de>
To:	Greg KH <greg@...ah.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Lennart Poettering <mzxreary@...inter.de>,
	Kay Sievers <kay.sievers@...y.org>, Valdis.Kletnieks@...edu,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Randy Dunlap <rdunlap@...otime.net>,
	Jiri Slaby <jslaby@...e.cz>
Subject: Re: tty: add 'active' sysfs attribute to tty0 and console device

On Fri, Nov 19, 2010 at 10:02:58AM -0800, Greg KH wrote:
> On Fri, Nov 19, 2010 at 03:47:05PM +0000, Alan Cox wrote:
> > > Currently the bootlogd(8) or blogd(8) parse the kernels command line
> > > and if available do an ioctl TIOCGDEV (not supported by the upstream
> > > kernel), then create a pty/tty pair, do an ioctl TIOCCONS to forward
> > 
> > So perhaps the vendors using TIOCGDEV could get off their collective
> > backsides and submit it upstream ?
> 
> Heh, that's what started this whole thing :)
> 
> I objected to TIOCGDEV going in as it seemed that only suse needed it
> for their boot sequence, and no other distro did which implied that it
> really wasn't necessary.
> 
> I'm still not convinced it is needed, and the many thousands of booting
> systems out there without it seem to confirm it...

Uhmm ... just to say it: I've been asked by Fedorea people and also
by Debian people why I had not submitted this patch and I've told
them that I had it done long time ago ;)

It seems to me that there is some demand but most user space
monitoring applications uses workarounds (AFAICR plymouth
uses hard coded VT for boot and shutdown).


  Werner

-- 
System V style init programs - http://savannah.nongnu.org/projects/sysvinit/
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