linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jan Rychter <jan@rychter.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [Swsusp-devel] Re: Thoughts wanted on merging Software Suspend enhancements
Date: Sat, 12 Jul 2003 19:17:24 -0700	[thread overview]
Message-ID: <m2vfu7cgqz.fsf@tnuctip.rychter.com> (raw)
In-Reply-To: 20030712225258.GB1508@elf.ucw.cz

[-- Attachment #1: Type: text/plain, Size: 992 bytes --]

>>>>> "Pavel" == Pavel Machek <pavel@suse.cz> writes:
 Pavel> Hi!
 > No, you don't understand.
 >
 > Magic SysRq is well known mechanism for torturing running
 > kernel. Kernel hackers have it enabled, security-consious people have
 > it disabled, and it is /proc-tweakable. It also works in cases like
 > "the only keyboard on serial terminal", etc.
 >>
 >> Ah okay. So the security by obscurity bit was wrong, but the general
 >> idea of SysRq-Esc was right?

 Pavel> I guess so. Advantage is that people already know about Magic
 Pavel> Sysrq and know how to disable it. (It would be something like
 Pavel> Sysrq-E, you can't really use esc).  Pavel

This discussion is strange. Nigel is right, if one starts suspending by
mistake, one wants to be able to abort it easily. 'Esc' is just the
perfect key for that. What's the point of hiding or obscuring it? I
mean, why would you want to do that? You don't routinely 'hide' Ctrl-C
for security reasons, do you?

--J.

[-- Attachment #2: Type: application/pgp-signature, Size: 188 bytes --]

  reply	other threads:[~2003-07-13  2:01 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-11 22:45 Thoughts wanted on merging Software Suspend enhancements Nigel Cunningham
2003-07-12 14:00 ` Pavel Machek
2003-07-12 14:55   ` Nigel Cunningham
2003-07-12 15:37     ` Pavel Machek
2003-07-12 19:38       ` Nigel Cunningham
2003-07-12 20:15         ` Pavel Machek
2003-07-12 20:22           ` [Swsusp-devel] " Nigel Cunningham
2003-07-12 22:52             ` Pavel Machek
2003-07-13  2:17               ` Jan Rychter [this message]
2003-07-12 20:20       ` Nigel Cunningham
2003-07-12 22:56         ` Pavel Machek
2003-07-13 13:27         ` Jamie Lokier
2003-07-13 19:23           ` Pavel Machek
2003-07-13 19:29             ` Jamie Lokier
2003-07-13 18:17       ` [Swsusp-devel] " Michael Frank
2003-07-13 19:29         ` Pavel Machek
2003-07-12 22:34   ` Dmitry Torokhov
2003-07-12 22:51     ` Pavel Machek
2003-07-13 13:35       ` Jamie Lokier
2003-07-13 19:31         ` Pavel Machek
2003-07-13 21:01           ` [Swsusp-devel] " Nigel Cunningham
2003-07-13 21:09             ` Pavel Machek
2003-07-13 21:21               ` Jan Rychter
2003-07-14  1:54               ` Nigel Cunningham
2003-07-14  3:41                 ` Michael Frank
2003-07-14 13:11                 ` Pavel Machek
2003-07-14 17:30                   ` Jan Rychter
2003-07-14 18:44                     ` Nigel Cunningham
2003-07-14 20:12                 ` Vojtech Pavlik
2003-07-14 20:18                   ` Pavel Machek
2003-07-14 20:30                     ` Nigel Cunningham
2003-07-14 20:43                       ` Pavel Machek
2003-07-14 21:20                         ` Nigel Cunningham
2003-07-14 20:41                     ` Vojtech Pavlik
     [not found]                       ` <20030714230219.GB11283@elf.ucw.cz>
2003-07-15  6:36                         ` Vojtech Pavlik
2003-07-15 10:08                           ` Pavel Machek
2003-07-15 11:11                             ` Markus Gaugusch
2003-07-15 11:31                               ` Pavel Machek
     [not found]             ` <Pine.LNX.4.53.0307132305500.1090@phoenix.kerstin.at>
2003-07-14  1:15               ` Jamie Lokier
2003-07-14  1:26                 ` Lyle Seaman
2003-07-14  1:43                   ` Jamie Lokier
2003-07-14  1:55                     ` Lyle Seaman
2003-07-14  1:57                       ` Nigel Cunningham
2003-07-14  2:17                       ` Lyle Seaman
2003-07-14 20:10           ` Vojtech Pavlik
2003-07-14 20:21             ` Nigel Cunningham
2003-07-14 20:29               ` Pavel Machek
2003-07-14 20:32                 ` Nigel Cunningham
2003-07-14 20:38                   ` Pavel Machek
2003-07-15 16:23         ` Kent Borg
2003-07-15 16:27           ` Pavel Machek
2003-07-15 17:27           ` Jamie Lokier
2003-07-15 19:05             ` Nigel Cunningham

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=m2vfu7cgqz.fsf@tnuctip.rychter.com \
    --to=jan@rychter.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).