setting default group and/or disabling CYGWIN ACL behavior

setting default group and/or disabling CYGWIN ACL behavior

[starlight]

Constantly have to wrestle with CYGWIN imposed ACLs on files I 
create.  It's bothersome to constantly issue 'cacls /t' and 
'icacls * /reset /t' commands to strip out the CYGWIN overrides 
after receiving complaints from others who can't access the 
files.  No one is in the Administrators group.

The best solution would be to just turn it off (!) so that 
normal Windows ACL inheritance works the way it does outside of 
CYGWIN.

A possible work-around if the above ideal solution is 
unavailable would be to have some way to change the group id to 
something other than "None".  Can't find a 'newgrp' command and 
the '/etc/passwd' file and 'bash' login syntax clearly do not 
support this.  Don't see any way to set the process default 
group in Windows without running a domain controller.

I searched on this quite a bit before asking the list.

Any help will be greatly appreciated.


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Re: setting default group and/or disabling CYGWIN ACL behavior

[Corinna Vinschen]

On Jul  1 02:07, starlight@binnacle.cx wrote:
> Constantly have to wrestle with CYGWIN imposed ACLs on files I 
> create.  It's bothersome to constantly issue 'cacls /t' and 
> 'icacls * /reset /t' commands to strip out the CYGWIN overrides 
> after receiving complaints from others who can't access the 
> files.  No one is in the Administrators group.

chmod?  setfacl?  umask?

> The best solution would be to just turn it off (!) so that 
> normal Windows ACL inheritance works the way it does outside of 
> CYGWIN.
> 
> A possible work-around if the above ideal solution is 
> unavailable would be to have some way to change the group id to 
> something other than "None".

Everybody is in the None group if you don't have a DC.  So I
don't see the problem if you use a umask matching your needs.

>   Can't find a 'newgrp' command and 
> the '/etc/passwd' file and 'bash' login syntax clearly do not 
> support this.

bash has nothing to do with that, of course.  As for /etc/passwd,
you didn't read the user's guide, apparently:
http://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-files

>   Don't see any way to set the process default 
> group in Windows without running a domain controller.

There is no way.  That doesn't mean we can't rectify this in
Cygwin (within the imposed Windows rules).  See above.



Corinna

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

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