Re: overlayfs vs. fscrypt

Miklos Szeredi
2019-03-13T12:58:26Z

On Wed, Mar 13, 2019 at 1:47 PM Richard Weinberger <richard@nod.at> wrote:
>
> Am Mittwoch, 13. März 2019, 13:36:02 CET schrieb Miklos Szeredi:
> > I don't get it. Does fscrypt try to check permissions via
> > ->d_revalidate? Why is it not doing that via ->permission()?
>
> Please let me explain. Suppose we have a fscrypto directory /mnt and
> I *don't* have the key.
>
> When reading the directory contents of /mnt will return an encrypted filename.
> e.g.
> # ls /mnt
> +mcQ46ne5Y8U6JMV9Wdq2C

Why does showing the encrypted contents make any sense? It could just
return -EPERM on all operations?

Thanks,
Miklos