On Tue, 12 Feb 2002, Andreas Ferber wrote:
> On Mon, Feb 11, 2002 at 10:47:23PM -0500, Theodore Tso wrote:
> >
> > Here's an LD_PRELOAD shared library that will do the trick... just
> > export the environment variable FAKETIME with the time that you'd
> > like, and then export the LD_PRELOAD environment variable to point
> > that the faketime.so library, and then execute your program. All
> > programs that have these two environment variables set will have their
> > time faked out accordingly.
>
> But note that this doesn't work with programs linked statically. If
> you must fool one of those, ptrace() is the only way to do it without
> some sort of kernel patch or module I think.
luckily, someone wrote such a kernel module - syscalltrack,
http://syscalltrack.sf.net.
it's in alpha stages right now, but it seems pretty stable so far (It
Works For Me - i run it regularly on all of my machines). note that we
currently support only logging system calls (a-la strace) and failing
them with a user given parameter- rewriting system call parameters will
require additional hackery, but not too much of it - on the order of one
day of work. volunteers are welcome.
-- mulixhttp://vipe.technion.ac.il/~mulix/ http://syscalltrack.sf.net/
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This archive was generated by hypermail 2b29 : Fri Feb 15 2002 - 21:00:48 EST