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[Dazuko-devel] execve syscall hooking
From: |
Sami Tikka |
Subject: |
[Dazuko-devel] execve syscall hooking |
Date: |
Tue, 13 Dec 2005 11:52:17 +0200 |
User-agent: |
Mutt/1.5.9i |
I have some good news and some bad news.
Good news: Syscall hooking in Linux 2.6 is done and it works.
Bad news: sys_execve hook does not work :)
The dazuko replacement for sys_execve does its magic and then, instead
of calling sys_execve, it inlines the sys_execve code, which involves a
call to do_execve, which does all the real work.
Unfortunately, it seems that do_execve is not an exported symbol in 2.6
kernels.
I do not quite understand the comments explaining why sys_execve cannot
be called directly in dazuko_linux.c. Could someone elaborate?
--
Sami Tikka tel: +358 9 2520 5115
Senior Software Engineer fax: +358 9 2520 5013
F-Secure Corporation http://www.f-secure.com/
BE SURE
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