OpenSSH solaris: bad return code after exec of remote command

Nicolas Williams Nicolas.Williams at
Thu Oct 11 06:37:35 EST 2001

On Wed, Oct 10, 2001 at 11:09:17AM +0100, Matthew Seaman wrote:
> Damn.  Synchronicity or what.  We've just been struggling with a similar
> problem and I was just about to post a bug report when I saw this
> message.
> What we've been able to determine:
> You'll always get a failure exit code from ssh if the following three
> things are true:
> i) SSH2 protocol
> ii) Using a forced command
> iii) No stdin on the client --- ie. using `ssh -n' or
> `ssh host commands </dev/null'.

Note that the "or" clause of (iii) above conflicts with (ii) -- can you

I've run into compiler bugs often lately. Check that as well -- i.e.,
rebuild using a different compiler, see what happens.

But, I'm testing this now, and here's what I found:

 - ssh -n -2 host exit $(print $((RANDOM % 91)) |tee /dev/tty) ; echo $?

   (with forced command="exit $SSH_ORIGINAL_COMMAND" and RSA keys):

    - from Solaris 2.6 to Solaris 2.6 consistently works
    - from Solaris 2.6 to Solaris 8 consistently works
    - from Solaris 8 to Solaris 2.6 consistently fails (exit code == 255)

On Solaris 8 I'm using the same binaries as on 2.6, built natively on
2.6. Perhaps therein lies the problem (I hope not).

> Work around is to use rsa1 keys and SSH1.5 protocol.
> Verified using OpenSSH 2.3.0p1, 2.9p1, 2.9.9p2 on Solaris 8.  We'll be
> glad to supply more detailed debugging output or whatever on request.

> 	Matthew
> -- 
> Matthew Seaman                                              01628 498661
>                 Abeo, abeo, abeo, actum est, comites!


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