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Message-ID: <CALkWK0k2BsoxwMLHSWmmrFXkvMBiWDG1b0NXrfR6i95=tFPMXw@mail.gmail.com>
Date: Tue, 16 Jul 2013 21:24:49 +0530
From: Ramkumar Ramachandra <artagnon@...il.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
Al Viro <viro@...iv.linux.org.uk>
Subject: [QUERY] User-Mode Linux and /dev/tty*
Hi,
So, I was trying to boot User-Mode Linux with a modern rootfs with
systemd on it, and found that it wouldn't present me a prompt. I dug
further, and found out that getty is not able to open /dev/tty1; I
then tried the console-getty.service (which uses /dev/console), and it
worked. The reason it doesn't work out of the box is that systemd is
not able to figure out whether or not a virtual console subsystem is
present: /dev/tty0 is present for some reason (although I'm not sure
it's a virtual console), and this confuses systemd.
So, my question is: does um Linux have a virtual console subsystem?
If so, then why doesn't it seem to work? If not, why does /dev/tty0
exist?
Thanks.
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