[OpenAFS-devel] Honoring g+s on directories

[Troy Benjegerdes]

I'd suggest you start by looking at 
http://source.scl.ameslab.gov/hg/openafs-volowner-chmod?cmd=changeset;node=46c1bff7dcab03443ec9cddfbf40fa3b9f16f28b

(otherwise known as src/afs/afsfileprocs.c, which is the code that seems
to check most of the permissions on the server.)


On Tue, Jun 13, 2006 at 03:45:27PM -0400, Todd M. Lewis wrote:
> How big a deal would it be to make OpenAFS clients honor the g+s bits on 
> directories?  In normal UNIX directories, new files created in a g+s 
> directory are owned by the same group that owns the directory, but 
> OpenAFS (like AFS before it) creates files owned by the users current 
> effective gid. I can see why, given that AFS doesn't really care so much 
> about UNIX groups. But then why pick the process egid instead of the 
> directory's group for new files in g+s directories?
> 
> I started looking for the responsible code, but quickly realizing the 
> haystack was a lot larger than the needle I was looking for (Is this a 
> totally client-side issue, or does the server get involved?), I though 
> I'd ask you guys.
> 
> So, this boils down to two questions:
> 
> * Would this be a big change to implement? and
> 
> * If a suitable patch were created, would such a change in behavior even 
> be considered?
> 
> Rationale: 1. AFS already throws enough quirks at potential adopters. 
> This is one difference between traditional UNIX semantics and AFS that 
> seems, to me at least, unnecessary. 2. I have at least one project that 
> tends to migrate among file systems, sometimes including AFS. The 
> "from-AFS" transition always causes a hiccup because new files have 
> unexpected group owners.
> -- 
>    +--------------------------------------------------------------+
>   / Todd_Lewis@unc.edu  919-445-9302  http://www.unc.edu/~utoddl /
>  /    The only substitute for good manners is fast reflexes.    /
> +--------------------------------------------------------------+
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-- 
--------------------------------------------------------------------------
Troy Benjegerdes                'da hozer'                hozer@hozed.org  

Somone asked me why I work on this free (http://www.fsf.org/philosophy/)
software stuff and not get a real job. Charles Shultz had the best answer:

"Why do musicians compose symphonies and poets write poems? They do it
because life wouldn't have any meaning for them if they didn't. That's why
I draw cartoons. It's my life." -- Charles Shultz