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Date: Thu, 14 Nov 1996 15:45:21 -0700 (MST)
From: Marc Slemko <marcs@znep.com>
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To: "Brian J. McGovern" <mcgovern@spoon.beta.com>
cc: questions@freebsd.org
Subject: Re: chroot problems...
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On Thu, 14 Nov 1996, Brian J. McGovern wrote:

> In their home directory, I have created a directory called bin,
> statically linked csh, ls, more, rz, and sz. The program has been set
> set-uid root. On execution, it changes directories and chroot's with no
> error (error codes are 0). However, if I try to run (for instance)
> /bin/csh, bin/csh, bin/ls, or /bin/ls using a call to system()
> (ie - system("/bin/csh") ), it returns an error code 4. 

system(3) calls /bin/sh to interpret its argument.  You don't have a
/bin/sh inside the chrooted environment.  Add one and things should work.