[movitz-devel] OS decisions

[Brian Makin]

Well, if you don't have some protection between a user and the base  
system then any user would be able to do nasty things to other people  
on the system.

Grab their passwords, kill their processes, intercept their network  
traffic etc...

Genera for example was single user only.  On top of that it didn't  
even try to protect the user from themselves.  If you overwrote the  
scheduler with minesweeper... so be it.

You could make a multiuser system without that sort of protection but  
then a hostile (or careless) user could cause havoc.

On Jun 13, 2009, at 9:41 PM, Shawn Betts wrote:

>> Protection between user processes probably aren't as important.  In a
>> multiuser system you would still want projection between user and  
>> kernel
>> space however.
>
> What is user and kernel space in a lisp OS and why do you need  
> protection?
>
> -Shawn
>
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