Re: Re: PHP hangs when exec'ing SSH

[Ross Becker <ross@xxxxxxxxxxx>]

I think you're probably right. My gut is telling me that this has to do 
with tty funkiness. I tried the batchmode option, but it didn't affect 
the problem. My bet is that ssh is mucking around with ttys, and PHP is 
loosing it's connection through apache. The php processing may actually 
be completing, it's just no longer sending it's output through apache, 
and apache hasn't figured that out, so apache is standing around waiting 
for PHP to complete. I'm hoping that the PHP devs may get around to this 
 as a bug and decide it can be fixed- maybe by resetting the tty after 
returning from a system or whatever.


--Ross

Rasmus Lerdorf wrote:
> Ross Becker wrote:
>
> > There's no output (besides the numeric return code) from SSH which I 
> > care about- there shouldnt be anything coming back via stdout or 
> > stderr. If there is, I'm happy to discard it.  This SHOULD be a 
> > dead-nuts-simple case of exec the command and wait for it to return.
>
>
> And if ssh didn't require a controlling tty in interactive mode, you'd 
> be right.  But unfortunately it does and you aren't.  You could try 
> playing with the batch mode option.  I am not sure if that disables the 
> tty requirement or if it simply suppresses prompts.  Regardless, this 
> has nothing to do with PHP's exec stuff.
>
> -Rasmus

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