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From: Garrett Cooper <youshi10@u.washington.edu>
Date: Mon, 15 Jan 2007 17:51:08 -0800
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Subject: Re: Console and Shell
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On Jan 15, 2007, at 3:09 PM, Kailas Ramasamy wrote:

> Hi,
> I would like to understand how the shell is tied to the console  
> port. When
> an user connects a terminal
> to the system via console port, a shell is started and tied to the  
> console
> port (/dev/console ?).
> Can some someone explain how this whole process works?. It would be  
> great if
> you can point me
> the source code and/or the any documents.
>
> Thanks
> Kailas

Why not just go to the source folder for sh (should be under /usr/src/ 
bin/sh/*) and grep for fopen or /dev/tty? Seems like the kernel would  
open up and attach the executing shell to its relevant TTY though  
with getty.
-Garrett