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From: Lennart Poettering <mzxreary@0pointer.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Kay Sievers <kay.sievers@vrfy.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Greg KH <greg@kroah.com>, Werner Fink <werner@suse.de>,
	Jiri Slaby <jslaby@suse.cz>
Subject: Re: tty: add 'active' sysfs attribute to tty0 and console device
Date: Tue, 16 Nov 2010 22:42:50 +0100	[thread overview]
Message-ID: <20101116214250.GB17824@tango.0pointer.de> (raw)
In-Reply-To: <20101116204906.29d840e9@lxorguk.ukuu.org.uk>

On Tue, 16.11.10 20:49, Alan Cox (alan@lxorguk.ukuu.org.uk) wrote:

> /dev/tty* and sysfs nodes don't track permissions, owner with each other,
> so you are providing interfaces that either expose information they
> shouldn't (which screen is valuable info in some environments), or don't
> expose info they should.

Well, I find the informatoin who is logged in much more valuable then
the information whether I am active or not. And the who is logged in
informatin I can find out with a simple stat() on the tty caller.

> sysfs also lacks vhangup so you can't fix it right now either.

Which is a feature, no a bug. It would be kinda messy if the service
which manages device access based on whose session is active would
always be forcibly stopped from doing so if somebody calls vhangup().

Lennart

-- 
Lennart Poettering - Red Hat, Inc.

  parent reply	other threads:[~2010-11-16 21:43 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-16 15:46 tty: add 'active' sysfs attribute to tty0 and console device Kay Sievers
2010-11-16 15:57 ` Alan Cox
2010-11-16 16:13   ` Kay Sievers
2010-11-16 17:14     ` Alan Cox
2010-11-16 18:51       ` Kay Sievers
2010-11-16 19:55         ` Alan Cox
2010-11-16 20:15           ` Kay Sievers
2010-11-16 20:49             ` Alan Cox
2010-11-16 21:29               ` Kay Sievers
2010-11-16 21:42               ` Lennart Poettering [this message]
2010-11-16 22:51                 ` Alan Cox
2010-11-16 22:58                   ` Lennart Poettering
2010-11-16 23:04                     ` Alan Cox
2010-11-16 23:18                       ` Lennart Poettering
2010-11-16 23:49                         ` Etched Pixels
2010-11-16 21:36           ` Lennart Poettering
2010-11-16 22:56             ` Alan Cox
2010-11-16 23:10               ` Lennart Poettering
2010-11-16 23:45                 ` Alan Cox
2010-11-17 16:31                 ` John Stoffel
2010-11-17 22:01                 ` Valdis.Kletnieks
2010-11-17 23:40                   ` Kay Sievers
2010-11-17 23:56                     ` Alan Cox
2010-11-18  1:27                       ` Greg KH
2010-11-18  1:48                         ` Lennart Poettering
2010-11-18  1:53                           ` Greg KH
2010-11-18  2:29                             ` Lennart Poettering
2010-11-18 11:00                             ` Dr. Werner Fink
2010-11-18 11:23                               ` Alan Cox
2010-11-18 12:12                                 ` Dr. Werner Fink
2010-11-18 12:58                                   ` Alan Cox
2010-11-18 13:14                                     ` Dr. Werner Fink
2010-11-18 14:41                                       ` Alan Cox
2010-11-19 13:21                                         ` Dr. Werner Fink
2010-11-19 15:47                                           ` Alan Cox
2010-11-19 17:07                                             ` Dr. Werner Fink
2010-11-19 18:02                                             ` Greg KH
2010-11-19 18:41                                               ` Dr. Werner Fink
2010-11-20 12:40                                                 ` Alan Cox
2010-12-01 11:15                                                   ` Dr. Werner Fink
2010-11-18 12:04                               ` Kay Sievers
2010-11-18 10:15                         ` Alan Cox
2010-11-18 11:55                           ` Kay Sievers
2010-11-18 13:01                             ` Alan Cox
     [not found] <20101201112004.12d78cd7@lxorguk.ukuu.org.uk>
2010-12-01 12:32 ` Dr. Werner Fink
     [not found]   ` <tiocgdev1@mdm.bga.com>
2010-12-03 11:48     ` Dr. Werner Fink

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