Re: calling "su" after "chroot"

From: Chris Lowth (please@no.spam)
Date: 03/09/03 

From: Chris Lowth <please@no.spam>
Date: Sun, 09 Mar 2003 17:20:07 +0000

panda wrote:

> Dear ALL,
>
> I've called "chroot" to limit the root directory. When i then call
> "su - user1", the system said the user id "user1" is not found. However,
> the user is really in the system. In addition, I've already copied the
> /etc/passwd file to the current user's /etc directory.
>
> Any idea? Thanks.
>
> panda

You need rather more than /etc/passwd. Running "strace" on the su program
shows that (on my system anyway), the following files are used..

        /etc/passwd, /etc/shadow, /etc/group
        /etc/pam.d/*
        /etc/nsswitch.conf /etc/localtime

Plus the shell program (bash), the libraries it uses.

To get the list do (as root) ..

        strace -o /tmp/out -f su -l user1

Then exit the su'd shell and grep for "/" in /tmp/out

Chris 

-- 
These ramblings are not sanctioned by my employer,
mother or kids. My views are my own.
My real address is: chris at lowth dot sea oh em
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