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Re: tty initialization failure under cygwin 1.7.2?



Followups to the original message demonstrated that this was
a problem when running in a non-Administrator account.  That's
still a bug, but does provide a workaround until this is fixed.

I've been monitoring the updates as they've been coming in and
have not seen a fix in 1.7.5.  It did sound like the fix was
not trivial so I'm not aware of an ETA for this.

Interestingly enough, I just ran cygcheck -s to verify the
latest version for this email, and cygcheck -s also prints
this error (from cygrunsrv).

Eric



----- Original Message ----
> From: "Egerton, Jim" <jegerton@akamai.com>
> To: cygwin@cygwin.com
> Sent: Fri, April 23, 2010 12:16:08 PM
> Subject: Re: tty initialization failure under cygwin 1.7.2?
> 
> I ran across this same problem today on Server 2008 with
1.7.3(0.225/5/3) and 
> may have some info to help reproduce this issue.
I get this error 
> using:

$ cmd /c "bash -c ls"
      7 [main] bash 3336 
> C:\bin\bash.exe: *** fatal error - couldn't
initialize fd 0 for 
> /dev/tty2

with an ssh session and a non administrators account.  
>   If I use RDP or
an administrative account, it works fine.    
> While the example probably
seems a bit bizarre, it's actually something you 
> would run into if you
used backticks with ActiveState Perl to execute a 
> Cygwin command.

jim



>On Apr  1 14:31, Eric Berge 
> wrote:
> 
> 
> I recently updated to 1.7.2 from 1.7.1 with the 
> March 15 development
> patch and noticed I was getting some process 
> failures.  In particular
> I was running the Coverity static analysis 
> tool, and was getting an
> error about not being able to "initialize fd 0 
> for /dev/tty0".
> 
> This problem does not appear to occur with 
> remote desktop, just with
> ssh.
> 
> I've been searching 
> around for a simpler version of the problem
> and this is what I 
> found:
> 
> The test scenario is to do the following:
> 
> 
> 1. ssh into an cygwin sshd server with an explicit password
> 2. 
> Run "cmd"
> 3. From "cmd" run "ls"
> 
> I unfortunately no 
> longer have the 1.7.1 + Mar15 patch running but
> with cygwin 1.5 and 
> running "ls" lists the entries of the directory
> as expected.  
> However, running on 1.7.2 has the following output:
> 
> 
> C:\cygwin\home\eberge>ls
> ls
>      12 [main] ls 
> 3984 C:\cygwin\bin\ls.exe: *** fatal error -
couldn't initialize fd 0 for 
> /dev/tty0
> 
> C:\cygwin\home\eberge>
> 
> I hope 
> this is reflective of the problem I had with Coverity.  It is
> the 
> same error message at least.  Is this indicative of an underlying
> 
> problem in 1.7.2 or is this related to any sort of reconfiguration I
> 
> need to do on my box after updating to 1.7.2?

I'm wondering if that's a 
> side effect with some other software.  I can
not reproduce your 
> problem.  I tried your test scenario and it works for
me.  I don't 
> get any weird error from ls.


Corinna

-- 
Corinna 
> Vinschen                  Please, 
> send mails regarding Cygwin to
Cygwin Project Co-Leader      
>     cygwin AT cygwin DOT com
Red Hat

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