Re: 1.0.9c-pre4

From: Jörgen Sigvardsson <jorgen.sigvardsson@kau.se>
Subject: Re: 1.0.9c-pre4
Date: Fri, 10 Nov 2000 09:31:25 +0100

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On Thursday 09 November 2000 18:01, you wrote:
> - Additional interception in sys_bind for UDP (2.4 series only)
Note that this does not only cover UDP, but also TCP and any other protoc=
ol=20
(e.g. X.25) which uses the BSD sockets.. right?

My suggestion is that ADF-calls are dropped from sys_listen() since a=20
bind()-call must have been issued before a listen() call anyways. Otherwi=
se=20
there will an extra call overhead for TCP-sockets.

>
> Stanislav and J=F6rgen, could you please verify the MAC and mmap change=
s?
It looks fine to me. I do not have a program/module to verify it with, bu=
t=20
from what I can see, it looks fine. I now see that R_EXECUTE is better th=
an=20
my suggestion. :)

OFF TOPIC:
Is it possible to see where a system call was issued? i.e., the return=20
address to user space? The reason is that I have an idea for some future =
work=20
on my own.. I would like to log the origins of access violations.
Scenario: Program A dynamically links B, and dynamically opens (dlopen) C=
. It=20
may be interesting to know which of A, B and C is at fault. Is this=20
technically possible?

- --=20
J=F6rgen Sigvardsson, B. Sc.
Lecturer, Computer Science Dept. Karlstad University
Tel: +46-(0)54-700 1786
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