chrooted php5-cgi in a non chrooted apache

Hi, actually I try to make my webserver-installation more secure. I've something in mind, but don't know if it is possible and if so, how to do it ;-) Actually I have the following config: Directory-Structure: /var/www domain1 conf cgi-bin web htdocs logs domain2 I've installed mod_fastcgi in apache and uses suexec. In each /var/www/domainx/cgi-bin I have a php-fcgi-starter-file, which starts /usr/bin/php5-cgi. Actually I see the following problem: I can run each "domain" under a different user, but the developer within each "domain" can program php-code to at least VIEW a lot of other things outside the domain-directory. Now I thought about the following: If I can create a chroot-jail within /var/www/domainx/web and let php5-cgi be executed within this chroot-jail, the developers would only see there own directory structure like var/www/domain1/web etc bin usr home What I've get so far is, that I've created a chroot jail within the web-directory. I can chroot to there and execute php (I used "jailer", for this). But I don't get it to work that mod_fastcgi starts the chroot-jail. I googled a lot, but only found howtos and tutorials how to put the complete apache into a jail, but this is not what I want. Each domain have to be in its own jail. Can someone help me / point me in the right direction? Thanks in advance Joerg Schoppet