Re: [PATCH] private mounts

Christoph Hellwig
2005-05-11T09:05:19Z

On Sat, Apr 30, 2005 at 11:25:10AM +0200, Miklos Szeredi wrote:
> > > > I can't write a script that reads your mind. But I sure can write
> > > > a script that finds out what you mounted in the other shells (with help
> > > > of a little wrapper around the mount command).
> > >
> > > How do you bind mount it from a different namespace? You _do_ need
> > > bind mount, since a new mount might require password input, etc...
> >
> > Not nessecarily. The filesystem gets called into ->get_sb for every mount,
> > and can then decided whether to return an existing superblock instance or
> > setup a new one. If the credentials for the new mount match an old one
> > it can just reuse it. (e.g. for block based filesystem it will always reuse
> > right now)
>
> And if the credentials are checked in userspace (sshfs)?

The it needs to call to userspace in ->get_sb..