On Wed, May 09, 2012 at 10:21:14AM +0100, David Howells wrote: > Dave Chinner <david@xxxxxxxxxxxxx> wrote: > > > I don't think we want to expose the inode generation numbers. It is > > trivial to construct NFS file handles (usually just fsid, inode > > number and generation) with that information and hence bypass > > security checks to access files. > > I was asked for it by Bernd Schubert for userspace NFS servers and FUSE - > maybe he can say what he wants it for. It's entirely broken, as a generation number might be part of the file handle (and for Linux-like filesystems normally is), but it's entirely up to the filesystem to decide how it works. That's why we added system calls to do operations on opaque file handles that the file system controls. Exposing a completely meaningless "generation" is a bad idea. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
