Re: ext2 attribute immutable

Miquel van Smoorenburg (miquels@drinkel.ow.org)
Tue, 2 Apr 1996 19:33:50 +0200 (MET DST)

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In article <m0u3rUL-0004CeC@a4dialup-3.ed.ac.uk>, <sct@dcs.ed.ac.uk> wrote:
>However, one thing which could be done fairly easily would be to (a)
>protect init from all attacks, making it immune to ptrace, kill -9
>etc; and (b) disable all direct kernel access (such as /dev/mem or
>loading new kernel modules) once securelev is sufficiently high.

(a) is already in the kernel; you can't PTRACE_ATTACH to init
and neither can you kill it with -9. The only way to kill it is
to find some bug in init and try to take advantage of it so that
it crashes ;)

Mike.

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