Re: [PATCH RFC v2] fhandle: expose u64 mount id to name_to_handle_at(2)

Christoph Hellwig
2024-05-29T06:34:32Z

On Tue, May 28, 2024 at 03:28:18PM +0200, Miklos Szeredi wrote:
> > open_by_handle_at looks up the superblock based on that identifier.
>
> The open file needs a specific mount, holding the superblock is not
> sufficient.

A strut file needs a vfsmount, yes. And it better be reachable by
the calling process. And maybe an optional restriction to a specific
mount by the caller might be useful, but I can't see how it is
required.