On Tue, 2009-12-15 at 18:37 +0100, Peter Stuge wrote
> useradd is a C program and my idea is to make it use the chroot()
> system call. This system call changes the root directory for the
> calling process. The chroot utility uses this system call, and then
> executes a shell or other program inside the new root. The utility
> will of course not work cross platform.
> 
> As long as the useradd C program does not rely on other executables
> at runtime, which I severly doubt considering the nature of the
> program, calling chroot() early in useradd would work regardless of
> what binaries, if any, are inside the new root dir. useradd only
> touches the user database text files.

Sounds like a simple enough idea. Patches welcome? Might be worth
looking at how Gentoo Prefix does it first though.

A.