chroot + su + env?

Angel Tsankov · External Since: May 04, 2006 Posts: 66

I need to execute a bash script in a chroot'ed environment and as a different user. I also need to set some of the variables in the
new environment based on values of variables in the current environment. How can I do this?

Schraalhans Keukenmeester · External Since: Apr 25, 2006 Posts: 28

Angel Tsankov wrote:
> I need to execute a bash script in a chroot'ed environment and as a
> different user. I also need to set some of the variables in the new
> environment based on values of variables in the current environment. How
> can I do this?

Is it NECESSARY the script runs inside the chroot? I.a.w. isn't it
possible the script runs in the current environment and operates on
files in the chroot ? That would deal with the env-var issue as well.

I would personally rather keep bash out of my chroot env.
Sh.

--
A prig is a fellow who is always making you a present of his opinions.
-- George Eliot

The Natural Philosopher · External Since: Jul 09, 2004 Posts: 802

Schraalhans Keukenmeester wrote:
> Angel Tsankov wrote:
>> I need to execute a bash script in a chroot'ed environment and as a
>> different user. I also need to set some of the variables in the new
>> environment based on values of variables in the current environment.
>> How can I do this?
>
> Is it NECESSARY the script runs inside the chroot? I.a.w. isn't it
> possible the script runs in the current environment and operates on
> files in the chroot ? That would deal with the env-var issue as well.
>
> I would personally rather keep bash out of my chroot env.
> Sh.
>

Indeed. Bloody sight easier to write half a dozen lines of C and make
that run as root..

Great advantage is the hackers inside your firewall* as well as those
outside won;t be able to break it beyond repair..

* Otherwise known as comp.sci graduautes