[Haifux] [Haifux Lecture] User space syscall tracing andmanipulation - fakeroot-ng by Shachar Shemesh
yossiarbel at nana10.co.il
Thu Jan 17 14:12:38 MSK 2008
>I even gave a haifux talk on run-time modification of programs using
> ptrace for fun an profit a few years ago.
There is surely a profit and a lot of fun around here, but indeed there was a
"ptrace - Playing Debugger Chess" lecture by you,
I don't know who has a profit here (and who has fun...)
From: Muli Ben-Yehuda [mailto:muli at il.ibm.com]
Sent: Thu 1/17/2008 1:08 PM
To: Shachar Shemesh
Cc: arbel yossi; Haifa linux club; linux-il
Subject: Re: [Haifux] [Haifux Lecture] User space syscall tracing andmanipulation - fakeroot-ng by Shachar Shemesh
On Thu, Jan 17, 2008 at 12:45:10PM +0200, Shachar Shemesh wrote:
> Fakeroot-ng is a (as far as I know) first attempt to do the things
> usually done with LD_PRELOAD using the ptrace mechanism. It was both
> the trigger and the root cause of this lecture.
Not sure what you mean by "things usually done with LD_PRELOAD?"
Certainly ptrace has been used to both trace and modify running
binaries, by gdb, strace, dumpmem, memfetch and others. I think
I even gave a haifux talk on run-time modification of programs using
ptrace for fun an profit a few years ago.
> The lecture will look at fakeroot, fakechroot, fakeroot-ng and
> strace, at varying degrees of depths, mostly because all four chose
> slightly different approaches for solving, fundamentally, the same
Sounds like an interesting talk, will try to attend.
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