Re: [9fans] getting at Windows files from VMware-hosted Plan 9

Re: [9fans] getting at Windows files from VMware-hosted Plan 9

[rob pike, esq.]

Nice!

	 <[0=1] | echo 0 > /srv/remotehost

is a clever trick. Another blow for textual interfaces!

-rob

Re: [9fans] getting at Windows files from VMware-hosted Plan 9

[Scott Schwartz]

	<[0=1] | echo 0 > /srv/remotehost

While this is cool, I have to admit that I never really liked
bidirectional pipes, because if you want to close half of the connection,
you either need something like bsd's shutdown(), or a way to recover
your control file which hopefully will let you half-close.

Re: [9fans] getting at Windows files from VMware-hosted Plan 9

[Mike Haertel]

>That's really cute.  Does the Windows ssh you have support
>port forwarding, so that sshnet would work too?

Yup.  It's just OpenSSH ported to run under Windows.

Re: [9fans] getting at Windows files from VMware-hosted Plan 9

[Russ Cox]

That's really cute.  Does the Windows ssh you have support
port forwarding, so that sshnet would work too?

Russ

[9fans] getting at Windows files from VMware-hosted Plan 9

[Mike Haertel]

First of all, here is a cute 1-liner for running u9fs without inetd
(useful if your local system administrator refuses to run u9fs from inetd,
or you hate rhosts-style authentication, or whatever...)

% ssh myname@remotehost u9fs -a none -u myname <[0=1] | echo 0 > /srv/remotehost
% mount /srv/remotehost /n/kremvax

I thought people might be interested in how I'm using this: I have an ssh
daemon running on my Windows box at work, courtesy of Cygwin.  I run Plan 9
under VMware on the same box.

I ported u9fs to Windows, again courtesy of Cygwin.  (Main changes: Cygwin has
no setre[ug]id(), no ruserok(), no <inttypes.h>, and no pread()/pwrite().
Diffs available upon request.)

So, in my VMware-hosted Plan 9 running under Windows, I do the following:

% ssh Administrator@windows u9fs -a none -u Administrator <[0=1] | echo 0 > /srv/windows
% mount /srv/windows /n/kremvax
% bind /n/kremvax/cygdrive/c /n/c

and thus I can use /n/c from VMware to look at the windows partition, just
as if Plan 9 were running on the bare hardware.

Moreover, this hack allows Plan 9 to see the contents of any SMB file server
that the host Windows environment can access.  Very useful if you're stuck
in a mixed network of evil operating systems.