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Date:      Sun, 4 May 2014 16:42:03 -0700
From:      Marcel Moolenaar <marcel@xcllnt.net>
To:        Nathan Whitehorn <nwhitehorn@freebsd.org>
Cc:        svn-src-head@freebsd.org, svn-src-all@freebsd.org, Marcel Moolenaar <marcel@freebsd.org>, src-committers@freebsd.org
Subject:   Re: svn commit: r262957 - in head/etc: etc.arm etc.ia64 etc.mips etc.powerpc etc.sparc64
Message-ID:  <03B7BFB3-4472-4612-9AD7-F3B8D478813F@xcllnt.net>
In-Reply-To: <53608DAF.7070606@freebsd.org>
References:  <201403092106.s29L6M3D056313@svn.freebsd.org> <53608DAF.7070606@freebsd.org>

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On Apr 29, 2014, at 10:44 PM, Nathan Whitehorn <nwhitehorn@freebsd.org> =
wrote:

> On 03/09/14 14:06, Marcel Moolenaar wrote:
>> Author: marcel
>> Date: Sun Mar  9 21:06:22 2014
>> New Revision: 262957
>> URL: http://svnweb.freebsd.org/changeset/base/262957
>>=20
>> Log:
>>   Change the terminal type/class for enabled serial lines to 3wire. =
This
>>   allows us to change the uart(4) driver to not hardcode specific =
line
>>   settings for the serial console.
>>      A terminal type of 3wire makes sure the console still works when =
no DCD
>>   signal is present, which preserves behviour. When it is known that =
the
>>   terminal server (or DCE in general) provides DCD, a terminal =
type/class
>>   of std can be used. This has the effect of being logged out when =
one
>>   disconnects from the console -- improving security overall.
>>      Likewise, when uart(4) does not fixate the baudrate, one can =
change
>>   the terminal type/class to set a specific baudrate. An operator can =
use
>>   this to change the console speed mid-flight, without needing a =
reboot.
>>   Of course it helps in this respect if and when the firmware can be
>>   configured from the OS.
>>      The above mentioned capabilities depend on uart(4) being =
changed, which
>>   is to happen next.
>>=20
>=20
> Should we set onifconsole for x86 UARTs as well? That enables them if =
they are the kernel console and is probably a user friendliness =
improvement.

Sorry for the delay...

I think that's a very good idea. I wasn't even aware of this
flag. We could mark all ttyu# lines as onifconsole by default
across all architectures and if that unifies the contents of
the /etc/ttys file, revert back to a single one...

--=20
Marcel Moolenaar
marcel@xcllnt.net



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