[patch] unprivileged mounts update

[Miklos Szeredi]

> On Apr 25 2007 11:21, Eric W. Biederman wrote:
> >>
> >> Why did we want to use fsuid, exactly?
> >
> >- Because ruid is completely the wrong thing we want mounts owned
> >  by whomever's permissions we are using to perform the mount.
> 
> Think nfs. I access some nfs file as an unprivileged user. knfsd, by
> nature, would run as euid=0, uid=0, but it needs fsuid=jengelh for
> most permission logic to work as expected.

I don't think knfsd will ever want to call mount(2).

But yeah, I've been convinced, that using fsuid is the right thing to
do.

Miklos