From owner-freebsd-hackers  Mon Mar  9 23:40:19 1998
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Date: Mon, 9 Mar 1998 23:30:51 -0800 (PST)
From: Julian Elischer <julian@whistle.com>
To: tcobb@staff.circle.net
cc: hackers@FreeBSD.ORG
Subject: Re: UNION FS appropriate?
In-Reply-To: <8188AD2EBC3CD111B7A30060082F32A40C3FA3@freya.circle.net>
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You don't need chroot.

Have a single copy of each binary on the server, but have a link (hard
link) to each chroot directory.
that way you only need one copy of each.


On Tue, 10 Mar 1998 tcobb@staff.circle.net wrote:

> 
> What is the current known state of UNION FS?
> 
> Here's my situation:
> 
> I have a set of directories which contain a user's files (mostly web
> stuff).  FTP chroots nicely into this space, and I have other public
> services which do so, too.  All of these files are served from a primary
> NFS server.  What I'd like to do is mount these directories on a new
> box, and then allow a chrooted telnet.  The telnet side I can handle
> just fine, but I need to 'overlay' onto these directories such stock
> binaries as chmod,ping,vi, etc.  This will allow me to let folks telnet
> in, and have a usable experience, but not require separate copies of
> these binaries in each chroot-space.  Is this possible with UNION?  Is
> UNION stable enough to handle being dynamically mapped on login?  
> 
> If so, I can find very little information on how to *actually* use it.
> Ultimately, I'll need to have several overlays of the same files into
> separate directories for this purpose.
> 
> Pointers appreciated.
> 
> - Troy Cobb
> Circle Net, Inc.
> 
> 
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