Change password chroot jailed users

Hello.

I try change user password in a environment "jailed", but I can not do.

I copy file /etc/passwd, /etc/shadow, command /usr/bin/passwd and its libraries ando all content of /etc/pam.d to jailed directory.

When a user run passwd into jail, he can not. The message is:

passwd: Module is unknow.

Do yo help me?

Thanks you.