From: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
To: cygwin@cygwin.com
Subject: Re: Switching groups with newgrp - how to get the new group with |GetTokenInformation()| ?
Date: Sat, 24 Feb 2024 09:57:11 -0700 [thread overview]
Message-ID: <03d0eb6d-2f0a-465a-8fb6-fa9bbbd19c12@SystematicSW.ab.ca> (raw)
In-Reply-To: <CAAvCNcCHAVooYX2_tUHHnUYvWRKHWhBwxmKws7AcqjOo-sQd+g@mail.gmail.com>
On 2024-02-23 14:15, Dan Shelton via Cygwin wrote:
> On Fri, 23 Feb 2024 at 19:45, Roland Mainz via Cygwin wrote:
>> After that /usr/bin/chgrp on Cygwin works on the NFSv4.1 filesystem,
>> but if I do a /usr/bin/newgrp+/usr/bin/touch it will not create files
>> with that new group, because nfsd_debug.exe only sees the default
>> primary group, not the new primary group set by /usr/bin/newgrp.
>>
>> Or is there a mistake - do I have to add the current user to the
>> Windows localgroup first somehow (like usermod on Linux) ?
>
> Yes, there is a mistake. You have to add the intended user to that group.
>
> Example:
> net localgroup mywingrp1 mywinuser44 /add
>
> HOWEVER, there is another Cygwin bug:
> "getent group mywingrp1" does not list any group members, even after
> "net localgroup mywingrp1 mywinuser44 /add", which is a POSIX
> violation.
No POSIX violation as getent and nsswitch came from Solaris, and despite
adoption by Linux, BSDs, and Cygwin, is not standardized as of SUSv5? draft
202x_d4.1.
Cygwin `getent group` depends on `/etc/nsswitch.conf` settings, defaults to
`files db`, and lists the contents of the entries in `/etc/group` and/or
Security Account Manager SAM groups and/or Active Directory AD groups (could
take a long while initially and is faster with cygserver caching).
See `getent(1)`.
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut
-- Antoine de Saint-Exupéry
next prev parent reply other threads:[~2024-02-24 16:57 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 17:38 Roland Mainz
2024-02-22 19:11 ` Corinna Vinschen
2024-02-23 13:03 ` Roland Mainz
2024-02-23 15:47 ` Corinna Vinschen
2024-02-23 18:45 ` Roland Mainz
2024-02-23 21:15 ` Dan Shelton
2024-02-24 13:11 ` Corinna Vinschen
2024-03-05 22:38 ` Dan Shelton
2024-03-06 13:01 ` Corinna Vinschen
2024-03-09 21:26 ` Glenn Strauss
2024-03-11 1:30 ` Dan Shelton
2024-03-11 3:49 ` Brian Inglis
2024-03-11 16:54 ` Corinna Vinschen
2024-03-11 1:28 ` Dan Shelton
2024-03-11 16:56 ` Corinna Vinschen
2024-04-19 23:44 ` Dan Shelton
2024-04-26 9:04 ` Andrey Repin
2024-02-24 16:57 ` Brian Inglis [this message]
2024-02-24 12:53 ` Corinna Vinschen
2024-02-24 14:38 ` Will all SIDs fit into |SECURITY_MAX_SID_SIZE| bytes ? / was: " Roland Mainz
2024-02-24 18:57 ` Corinna Vinschen
2024-02-25 21:04 ` Roland Mainz
2024-02-25 22:32 ` gs-cygwin.com
2024-02-26 4:17 ` gs-cygwin.com
2024-02-26 16:12 ` [EXTERNAL] " Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2024-02-26 9:20 ` Corinna Vinschen
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