Unable to open /dev/io

[Jerry McAllister]

> 
> Earlier, I had asked a question on how to write a byte to the parallel port.
> And Daan Vreeken was kind enough to point me to a litle c-source that uses
> /dev/io.
> 
> Unfortunately, as I just found out, when I raise kern.securelevel to 2
> (FreeBSD 4.7R), I can no longer open /dev/io for writing. :( That means I
> can no longer use this method; because there is no way I will allow my
> production server to run at kern.securelevel lower than 2. Which means I am
> back to square one. :(
> 
> Sigh. Is there then no way to write a simple 0 or 1 to the parallel port,
> without compromizing the security of the server at large?

Do you really need to set the secure level to 2?   What for?

////jerry

> 
> Thanks,
> 
> - Mark
>