Re: [RFC] FUSE permission modell (Was: fuse review bits)

[Jamie Lokier <jamie@shareable.org>]

Miklos Szeredi wrote:
> > If the user wants to edit a read-only file in a tgz owned by himself,
> > why can he not _chmod_ the file and _then_ edit it?
> > 
> > That said, I would _usually_ prefer that when I enter a tgz, that I
> > see all component files having the same uid/gid/permissions as the tgz
> > file itself - the same as I'd see if I entered a zip file.
> 
> I can accept that usually you are not interested in the stored
> uid/gid.  But doubt that you want to lose permission information when
> you mount a tar file.  Zip is a different kettle of fish since that
> doesn't contain uid/gid/permissions.

It's not about being not interested.

It's because I'd want my programs, and other users, to have exactly
the same access to the tgz contents through vfs as they have when
accessing the tgz file directly.  Not some baroque combination of
unobvious hard-coded permission rules, that aren't even visible
through stat(), and which both increase permissions for the user and
decrease it for others at the same time.

I see why you may want to hide certain things from other users
sometimes - the sshfs example is a good one.  I daresay Al Viro could
come up with a per-user or per-keyring mount point for those occasions :)

-- Jamie