Re: [TESTERS needed] New POSIX permission handling

[Corinna Vinschen <corinna-cygwin@cygwin.com>]

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Hi Ismail,

On Apr 16 09:48, Ismail Donmez wrote:
> Corinna Vinschen-2 wrote
> > On Apr 16 09:09, Ismail Donmez wrote:
> >> [~/src/mutt]> chmod +x config.status
> >> chmod: changing permissions of ‘config.status’: Permission denied

This is really surprising.

> [~/src/mutt]> icacls config.status
> config.status NULL SID:(DENY)(Rc,S,REA,X,DC)
>               UX31A\ismail:(F)
>               UX31A\ismail:(RX)
>               NT AUTHORITY\SYSTEM:(RX,W,DC)
>               BUILTIN\Administrators:(RX,W,DC)
>               Everyone:(RX)
> 
> Successfully processed 1 files; Failed processing 0 files
> 
> [~/src/mutt]> icacls .
> . NULL SID:(DENY)(Rc,S,REA,X,DC)
>   UX31A\ismail:(F)
>   UX31A\ismail:(RX)
>   NT AUTHORITY\SYSTEM:(RX,W,DC)
>   BUILTIN\Administrators:(RX,W,DC)
>   Everyone:(RX)
>   NULL SID:(OI)(CI)(IO)(DENY)(Rc,S,REA,X,DC)
>   CREATOR OWNER:(OI)(CI)(IO)(F)
>   CREATOR GROUP:(OI)(CI)(IO)(RX)
>   NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(RX,W,DC)
>   BUILTIN\Administrators:(OI)(CI)(IO)(RX,W,DC)
>   Everyone:(OI)(CI)(IO)(RX)

I created the exact same scenario with the exact same ACLs, just with my
own account as user and group, and I can't reproduce a "Permission
denied".  chmod simply works for me.  Weird.

While looking into this I found some other problems in this owner==group
scenario, so I applied a few patches.  I'm just creating new developer
snapshots and a 2.0.0-0.6 test release.

It would be nice if you could update, test again, and if the problem
still occurs, I think I'll need an strace of the above chmod call as
in:

  $ strace -o chmod.trace chmod +x config.status

This combined with the icacls of the ACLs of config.status and the
parent dir, just to be sure the new Cygwin created the same ACLs.


Thanks in advance,
Corinna

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

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