unix socket fd sending questions

[Kevin Fox]

Say you were to open a directory handle in process A and pass it through
a unix socket to process B.

Process A and B are owned by two different users and are running in two
separate mount namespaces.

If you were to readdir in process B on the descriptor would you see
process A's view of the world? I'm guessing probably so.

If you were to walk the tree pointed to by the descriptor, would you see
A's view of the world? I'm guessing not if you use open/readdir, but
what about openat and the like?

Thanks,
Kevin Fox

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/