On Sun, Jul 25, 2010 at 4:16 PM, bofh <[email protected]> wrote: > Ok, when I first learnt how to use unix nearly 20 years ago, one of > the things I learnt was that a privileged user can break shit, but > should not cause kernels to hang or crash. That would be considered a > bug. Only DOS and windows 3.1 do that :)
Hahahaha cp /etc/termcap /dev/mem That has crashed *every* version UNIX I have worked with, substituting an alternative large file on those pure sysv systems without /etc/termcap, of course. But let's say we figure out a way to do what you suggest and have the kernel robust and protected against all actions of a privileged user. What does that get us? They can still fuck up ld.so or libc, and poof, most the programs on the system will crash when started! Overwrite /etc/passwd with /dev/random and rename /bin and your system will stop being useful. WHAT PROBLEM ARE YOU TRYING TO SOLVE? Philip Guenther
