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Date: Fri, 12 Feb 2010 18:39:37 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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Subject: Re: cron & Windows 7
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On Feb 12 10:19, Pierre A. Humblet wrote:
> From: "Corinna Vinschen"
> | I think it was always there, but I'm not sure.
> 
> It's hard to believe that the bug has always been there on foreign machines...
> A few other things:
> 
> 1) I had the feeling that we have already discussed this in the past.
> Take a look at
> http://www.cygwin.com/ml/cygwin-patches/2002-q4/msg00255.html
> (last line). Thanks to google :)

Cool!  Look at the date!  So I did it again wrong after you already
fixed it in 2002.  Oh well.  Btw, I tested this today and it seems the
patch is working.  I'll just change it to use a well_known_builtin_sid
rather than creating the SID on the fly.

> 2) About http://cygwin.com/ml/cygwin/2010-01/msg00334.html
> USERS is already always added to the token. It's done in get_token_group_sidlist.

Yes, but not in 1.7.1.  This is new since 2010-01-08.

> 3) There is another major bug: scripts don't get executed while impersonated.
> The problem is in access.
> 
> cron has setuid and tries to run sendmail ==> /bin/cronlog
>   502 3438682 [main] cron 4000 av::fixup: C:\Program Files\cygwin_1.7\bin\cronlog is possibly a 
> script
>  1832 3440514 [main] cron 4000 seterrno_from_win_error: 
> ../../../../src/winsup/cygwin/security.cc:766 windows erro$
>    61 3440575 [main] cron 4000 geterrno_from_win_error: windows error 6 == errno 9
>    21 3440596 [main] cron 4000 __set_errno: void seterrno_from_win_error(const char*, int, 
> DWORD):319 val 9
>    21 3440617 [main] cron 4000 check_file_access: flags 1, ret -1net helpmsg 6
> 
> net helpmsg 6
> The handle is invalid.
> 
> I will get to it but if you have an idea let me know.

I have no idea, sorry.  The Win32 error 6 is an invalid handle.  But the
token used here is always an impersonation token, just as AccessCheck
requires.  That's puzzeling.

> 4) Finally I noticed that perl doesn't run with the cygwin0.dll I built in cvs (last nite).
> Not sure if you see that too.

I see that, too.  But that's something for another thread, please.


Corinna

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

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