svn commit: r262957 - in head/etc: etc.arm etc.ia64 etc.mips etc.powerpc etc.sparc64
nwhitehorn at freebsd.org
Sun May 4 23:44:54 UTC 2014
On 05/04/14 16:42, Marcel Moolenaar wrote:
> On Apr 29, 2014, at 10:44 PM, Nathan Whitehorn <nwhitehorn at 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
>>> 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.
>> 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...
A single ttys file would be fantastic! Could you take the lead here? I'm
pretty busy at the moment.
More information about the svn-src-head