Re: [bug-mailutils] pop3d: setting up chroot simply

[Stephen Gildea]

>   Depending on the operating mode, pop3d may still access files in /etc
>   and other directories after initial startup. Namely, this happens when
>   using PAM authentication (libpam re-reads /etc/pam.conf each time
>   pam_start() is called). Chrooting will break it.

My goal here is not to completely eliminate the need to copy some files
into the chroot subdirectory.  This may not even be possible.  Instead,
I want to find the right balance of calling chroot early enough to be
most useful and late enough to be most convenient to set up.

Even if /etc/pam.conf (and/or a few other files) need to be copied into
the chroot subdirectory at set-up, the chroot is still a valid and
useful addition.

However, in this case pam.conf may not need to be copied.  It appears to
me that pop3d_user() calls mu_authenticate() before it calls setuid(),
and hence pam_start() will get called before my proposed chroot().

 < Stephen