[PLUG] chroot and su

[Dan Widyono <dan@widyono.net>]

Greetings,

I'm playing around with chroot and su on Fermi Linux 3.0.3 (based off of
RedHat Enterprise Linux 3, similar to WhiteBox and CentOS and Tao Linux
etc.):

	http://www.tjw.org/chroot-login-HOWTO/
	http://tjw.org/etded/	(ok, this is the real reason :) )

I'm not able to su to any other user.  chroot works fine, and root can do
everything, plus any other user given the 0 UID can do everything within
chroot.  However, strace su shows that setuid32(NEWUID) is called, then
execve(LOGIN_SHELL) returns with EACCES.  I've double checked all x
permissions on the full path leading up to the LOGIN_SHELL (/bin/bash, /bash,
/bin/ls, /ls, etc. have been tried), as well as the LOGIN_SHELL executable
itself.  No go.  I've compiled the su which doesn't use pam and replaced the
distributed version, no go.

Anyone succeed in su'ing in a chroot environment?  Could you pass along the
necessary ls -lR and/or incantations?

Oh, and for Jeff's sake, if you can show how to do this in Python, that would
be great.  :D

Thanks much,
Dan W.

-- 
-- Daniel Widyono             --
-- www.widyono.net            --
-- www.cis.upenn.edu/~widyono --
-- 
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