[9fans] sshserve.c

[9fans] sshserve.c

[Kenji Arisawa]

Hello,

In sshserve.c:

void
usage(void)
{
	fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
address\n");
	usage();
}

This code can make endless loop. Right?

Kenji Arisawa

Re: [9fans] sshserve.c

[Pietro Gagliardi]

Yup. usage() is calling itself with no termination condition - and
what's more, it is tail recursing. It should be

	void
	usage(void)
	{
		fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
address\n");
		exits("usage");
	}

to keep with the Plan 9 program. Enjoy!

When this QEMU-on-Leopard-freezes-randomly bug gets fixed, I can fix
it and any other dangers.

On Apr 15, 2008, at 6:05 PM, Kenji Arisawa wrote:

> Hello,
>
> In sshserve.c:
>
> void
> usage(void)
> {
> 	fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
> address\n");
> 	usage();
> }
>
> This code can make endless loop. Right?
>
> Kenji Arisawa
>
>

Re: [9fans] sshserve.c

[john]

> Yup. usage() is calling itself with no termination condition - and
> what's more, it is tail recursing. It should be
>
> 	void
> 	usage(void)
> 	{
> 		fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
> address\n");
> 		exits("usage");
> 	}
>
> to keep with the Plan 9 program. Enjoy!
>
> When this QEMU-on-Leopard-freezes-randomly bug gets fixed, I can fix
> it and any other dangers.
>
> On Apr 15, 2008, at 6:05 PM, Kenji Arisawa wrote:
>
>> Hello,
>>
>> In sshserve.c:
>>
>> void
>> usage(void)
>> {
>> 	fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
>> address\n");
>> 	usage();
>> }
>>
>> This code can make endless loop. Right?
>>
>> Kenji Arisawa
>>
>>

Submit a patch!
And don't top-post, damn it.  We aren't all MicroSavages here.


John

Re: [9fans] sshserve.c

[erik quanstrom]

>> Yup. usage() is calling itself with no termination condition - and
>> what's more, it is tail recursing. It should be
>>
>> 	void
>> 	usage(void)
>> 	{
>> 		fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
>> address\n");
>> 		exits("usage");
>> 	}
>>
>> to keep with the Plan 9 program. Enjoy!
>>
>> When this QEMU-on-Leopard-freezes-randomly bug gets fixed, I can fix
>> it and any other dangers.
>>
>> On Apr 15, 2008, at 6:05 PM, Kenji Arisawa wrote:
>>
>>> Hello,
>>>
>>> In sshserve.c:
>>>
>>> void
>>> usage(void)
>>> {
>>> 	fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
>>> address\n");
>>> 	usage();
>>> }
>>>
>>> This code can make endless loop. Right?
>>>
>>> Kenji Arisawa
>>>
>>>
>
> Submit a patch!
> And don't top-post, damn it.  We aren't all MicroSavages here.
>
>
> John

please explain why bottom posting is better.

- erik

p.s. ☺

Re: [9fans] sshserve.c

[john]

eric quanstrom <quanstro@quanstro.net> wrote:
>
> please explain why bottom posting is better.
>
> - erik
>
> p.s. ☺

Because it screws up conversation order.
>Why is top-posting bad?
>>Top-posting.
>>>What is the most annoying thing on Usenet?

Re: [9fans] sshserve.c

[erik quanstrom]

> Because it screws up conversation order.

that depends if you think a conversation is a stack or a heap.

- erik

Re: [9fans] sshserve.c

[Roman V. Shaposhnik]

On Tue, 2008-04-15 at 19:17 -0400, erik quanstrom wrote:
> > Because it screws up conversation order.
>
> that depends if you think a conversation is a stack or a heap.

And even if it is a stack -- which way it grows.

Thanks,
Roman.

Re: [9fans] sshserve.c

[Pietro Gagliardi]

On Apr 15, 2008, at 6:34 PM, john@csplan9.rit.edu wrote:

>> Yup. usage() is calling itself with no termination condition - and
>> what's more, it is tail recursing. It should be
>>
>> 	void
>> 	usage(void)
>> 	{
>> 		fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
>> address\n");
>> 		exits("usage");
>> 	}
>>
>> to keep with the Plan 9 program. Enjoy!
>>
>> When this QEMU-on-Leopard-freezes-randomly bug gets fixed, I can fix
>> it and any other dangers.
>>
>> On Apr 15, 2008, at 6:05 PM, Kenji Arisawa wrote:
>>
>>> Hello,
>>>
>>> In sshserve.c:
>>>
>>> void
>>> usage(void)
>>> {
>>> 	fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-ip-
>>> address\n");
>>> 	usage();
>>> }
>>>
>>> This code can make endless loop. Right?
>>>
>>> Kenji Arisawa
>>>
>>>
>
> Submit a patch!
> And don't top-post, damn it.  We aren't all MicroSavages here.
>
>
> John
>
>
I'm on OS X, and again, I can't have QEMU crash just before rio starts!\

Re: [9fans] sshserve.c

[Kenji Arisawa]

Thanks Pietro,

I am glad if someone can help me.
Using MacFUSE + sshfs, I have:
	-bash$ sshfs ar.aichi-u.ac.jp: /n/ar
	remote host has disconnected
	-bash$
Then /sys/log/ssh says:
	ar Apr 16 07:53:15 [359853] connect from 124.241.154.73!53142
	/bin/aux/sshserve: reading server version: unexpected EOF

The host ar is a Plan 9 cpu server servicing tcp22 as
         exec /bin/aux/sshserve -A 'password' `{cat $3/remote} >>[2]/
sys/log/ssh

Of course I can connect to ar using
	ssh ar.aichi-u.ac.jp

Kenji Arisawa

On 2008/04/16, at 7:29, Pietro Gagliardi wrote:
> Yup. usage() is calling itself with no termination condition - and
> what's more, it is tail recursing. It should be
>
> 	void
> 	usage(void)
> 	{
> 		fprint(2, "usage: sshserve [-A authlist] [-c cipherlist] client-
> ip-address\n");
> 		exits("usage");
> 	}
>
> to keep with the Plan 9 program. Enjoy!
>
> When this QEMU-on-Leopard-freezes-randomly bug gets fixed, I can
> fix it and any other dangers.
>

Re: [9fans] sshserve.c

[Russ Cox]

> Using MacFUSE + sshfs, I have:
> 	-bash$ sshfs ar.aichi-u.ac.jp: /n/ar
> 	remote host has disconnected
> 	-bash$
> Then /sys/log/ssh says:
> 	ar Apr 16 07:53:15 [359853] connect from 124.241.154.73!53142
> 	/bin/aux/sshserve: reading server version: unexpected EOF

I don't believe the Plan 9 ssh supports the protocol
that sshfs needs, which is sftp not scp.

I apologize for dragging this conversation back on topic.

Russ

Re: [9fans] sshserve.c

[Bruce Ellis]

On Wed, Apr 16, 2008 at 12:29 PM, Russ Cox <rsc@swtch.com> wrote:
> > Using MacFUSE + sshfs, I have:
> >       -bash$ sshfs ar.aichi-u.ac.jp: /n/ar
> >       remote host has disconnected
> >       -bash$
> > Then /sys/log/ssh says:
> >       ar Apr 16 07:53:15 [359853] connect from 124.241.154.73!53142
> >       /bin/aux/sshserve: reading server version: unexpected EOF
>
> I don't believe the Plan 9 ssh supports the protocol
> that sshfs needs, which is sftp not scp.
>
> I apologize for dragging this conversation back on topic.
>
> Russ

We did learn thet pietro doesn't actually run plan9. God knows what
his responses will be when he finishes his Gedankenexperiment stage.

But yeah, ssh has limited protocol support. Fix it or complain someone.

brucee

Re: [9fans] sshserve.c

[Pietro Gagliardi]

On Apr 15, 2008, at 11:30 PM, Bruce Ellis wrote:

> On Wed, Apr 16, 2008 at 12:29 PM, Russ Cox <rsc@swtch.com> wrote:
>>> Using MacFUSE + sshfs, I have:
>>>      -bash$ sshfs ar.aichi-u.ac.jp: /n/ar
>>>      remote host has disconnected
>>>      -bash$
>>> Then /sys/log/ssh says:
>>>      ar Apr 16 07:53:15 [359853] connect from 124.241.154.73!53142
>>>      /bin/aux/sshserve: reading server version: unexpected EOF
>>
>> I don't believe the Plan 9 ssh supports the protocol
>> that sshfs needs, which is sftp not scp.
>>
>> I apologize for dragging this conversation back on topic.
>>
>> Russ
>
> We did learn thet pietro doesn't actually run plan9. God knows what
> his responses will be when he finishes his Gedankenexperiment stage.

Since when is  virtualization not running an OS? Please speak up. I
have been running Plan 9 on my virtualization software for months. If
you look for my virtualizer review on thinkmac.net, you will notice it
in one of the screenshots.

>
>
> But yeah, ssh has limited protocol support. Fix it or complain
> someone.
>
> brucee
>

Re: [9fans] sshserve.c

[Bruce Ellis]

On Wed, Apr 16, 2008 at 10:12 PM, Pietro Gagliardi <pietro10@mac.com> wrote:
> On Apr 15, 2008, at 11:30 PM, Bruce Ellis wrote:
>
> > On Wed, Apr 16, 2008 at 12:29 PM, Russ Cox <rsc@swtch.com> wrote:
> >
> > >
> > > > Using MacFUSE + sshfs, I have:
> > > >     -bash$ sshfs ar.aichi-u.ac.jp: /n/ar
> > > >     remote host has disconnected
> > > >     -bash$
> > > > Then /sys/log/ssh says:
> > > >     ar Apr 16 07:53:15 [359853] connect from 124.241.154.73!53142
> > > >     /bin/aux/sshserve: reading server version: unexpected EOF
> > > >
> > >
> > > I don't believe the Plan 9 ssh supports the protocol
> > > that sshfs needs, which is sftp not scp.
> > >
> > > I apologize for dragging this conversation back on topic.
> > >
> > > Russ
> > >
> >
> > We did learn thet pietro doesn't actually run plan9. God knows what
> > his responses will be when he finishes his Gedankenexperiment stage.
> >
>
> Since when is  virtualization not running an OS? Please speak up. I have
> been running Plan 9 on my virtualization software for months. If you look
> for my virtualizer review on thinkmac.net, you will notice it in one of the
> screenshots.
>

You seem to be particularly confused today. After stressing that you
can't submit a patch because your plan9 doesn't work you say this. Oh
why do I bother.

brucee

Re: [9fans] sshserve.c

[Steve Simon]

Sshfs uses ssh to start a file server program (generally called sftp) on the remote server.

Under sshv2 this is described as an external subsystem, i.e. a specific message is sent
to the server to start the file server subsystem.

Under sshv1 which is what the plan9 ssh server supports, the client needs to envoke
sftp binary directly.

I believe the sftp binary from the openssh port should "just work" if the fuse sshfs port
is capable of working with sshv1 and being told the command to send.

sftp in this context is unrelated to the port 115 simple file transfer protocol (sadly also
known as SFTP) nor to the traditional port 21 ftp server.

an sftp client for plan9 has been on my todo list for... years.

-Steve