On Tue, 20 Feb 2001, Bang Jun-Young wrote:

> "Nathan J. Williams" wrote:
> > 
> > Some testing code of mine recently tripped over this bit of code in
> > wsemul_vt100.c:
> > 
> >             case ASCII_ESC:
> > #ifdef DIAGNOSTIC
> >                 if (kernel)
> >                         panic("ESC in kernel output");
> > #endif
> > 
> > I'm puzzled. What is this good for? Why is printing an escape sequence
> > from the kernel forbidden, and in such a drastic way?
> 
> The kernel shouldn't depend on or expect any particular terminal type 
> to be used, so its purpose would be to prevent a kernel hacker from 
> inserting escape sequences into kernel messages by mistake.

Yes, but by panicing when they are seen, we make a DoS attack...

Take care,

Bill