serial console and log-in

[Denis Vlasenko]

On Friday 16 February 2007 23:45, Natanael Copa wrote:
> Hi,
> 
> >From the serial console kernel documentation:
> 
>  If no console device is specified, the first device found capable of
>  acting as a system console will be used. At this time, the system
>  first looks for a VGA card and then for a serial port. So if you don't
>  have a VGA card in your system the first serial port will automatically
>  become the console.
> 
> Is there some way to autodetect if the console is a serial console, and
> if it is, activate a line like this in inittab:
> 
> ttyS0 ::respawn:/sbin/getty -L ttyS0 115200 vt100 
> 
> And if /dev/console is not a serial console, it will not activate any
> getty on the serial console.

I propose making it possible to start getty (or whatever)
on any device which happens to be init's fd#0 (which is passed to it
by kernel). This way you will automatically get your getty whereever
kernel's console happened to be this time.

Proposed syntax:

::respawn:/sbin/getty - 115200 vt100 

or

0::respawn:/sbin/getty - 115200 vt100 

or 

stdin::respawn:/sbin/getty - 115200 vt100 

We should fix init's crazy handling of console and stdio fd's first
(see my earlier mail today). Not too hard, I just need people who
are willing to test changes.
--
vda