Re: [PATCH 1/5] Add POSIX Access Control Lists to ext2/3

[Andreas Gruenbacher]

On Wednesday 16 October 2002 17:50, Theodore Ts'o wrote:
> On Wed, Oct 16, 2002 at 02:11:04PM +0100, Christoph Hellwig wrote:
> > Ted, please either go _always_ through the {get,set}_posix_acl methods
> > or never.  Currently XFS doesn't know and doesn't want to know
> > about the so called "egenric ACL representation" used by ext2/ext3.  With
> > theses methods we'd have to add it to XFS which is fine for me as long as
> > it the representation generally used for working with ACLs.  That would
> > mean we'd have to add new syscall or at least VFS-level hooks to the
> > xattr code.
>
> Fine.  I'll just yank the {get,set}_posix_acl methods for now.  The
> inode methods were only needed for the NFS code (see Andreas' comments
> about the xattr interfaces being problematical for VFS support).
>
> However, the reality is that at this point, we probably won't have
> time to get support in for the NFS server ACL before feature freeze,
> and changing the interface to ACL's (never mind the headaches of
> trying to agree to a new syscall interface at this late date), given
> the deployed userspace tools, just doesn't seem to be realistic.

The pain of not having the NFS ACL hack is only moderate; it only affects 
interoperability of older systems with a feature that wasn't there before, 
and even then the effects aren't dramatic. We could live without it for a 
while, but I'll see if I code that up in time too.

--Andreas.