On Tue, Jun 2, 2009 at 4:22 PM, Anthony Sorace <ano...@gmail.com> wrote:
> "none" does not (normally) give you read-only access; if something is
> world-writable, none will be able to write it. but getting read-only
> is pretty easy; see exportfs(4) and the files which use it in
> /rc/bin/service. from emory, i'd say "exec /bin/exportfs -Rr
> /lib/music" would do what you want.
>
> i've used nfsserver to provide access to a bunch of different types of
> unix hosts, but it has been a while. i just spent a few minutes right
> now trying with OS X and a remote plan9 server with no joy, but i'm
> not convinced i don't have a nat being disruptive.
>
> as far as the examples in nfsserver(8) go:
> "ivy" is a machine which responds to 9fs and exports a namespace
> containing /etc/passwd and /etc/group; it is most likely a unix system
> running u9fs or similar. /lib/ndb/nfs contains a 9fs command to mount
> ivy, so you can look at the live passwd and group files. if you'd
> rather not, or are unable to, get u9fs working on some authoritative
> unix system, you can copy or create a representative set locally (say,
> /lib/ndb/unix.passwd) and change the last two file names in the
> /lib/ndb/nfs example to point to those.
>
> "edith" and "yoshimi" are just 9p servers, most likely plan9 machines.
> passing them in the -a argument to nfsserver means that nfs clients
> attempting to mount the machines will have those two "shares" to pick
> from.
>
> i believe the example becomes inconsistent here; i think edith/yoshimi
> should match bootes/fornax. so if you had run the example as given
> here, you'd want to run "/etc/mount -o soft,intr eduardo:ivy /n/ivy"
> on your unix system. i forget whether the "share" ("ivy") needs to
> match the exact string given to -a ("tcp!ivy") or if just the hostname
> is okay.
>
>

What exactly is the purpose of the passwd and group files?

John
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