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

From: Jamie Lokier (jamie_at_shareable.org)
Date: 04/13/05

  • Next message: Daniel Barkalow: "Re: Re: Re: [ANNOUNCE] git-pasky-0.3" 
    Date:	Wed, 13 Apr 2005 17:57:46 +0100
To: Miklos Szeredi <miklos@szeredi.hu>

    Miklos Szeredi wrote:
    > > Look up the rather large linux-kernel & linux-fsdevel thread "silent
    > > semantic changes with reiser4" and it's followup threads, from last
    > > year.
    >
    > Wow, it's 700+ messages. I got through the first 40, and already feel
    > dizzy :)

    It's easier if you skip the ones by Hans and their immediate followups :)

    (Nothing personal, it's that Hans is mostly justifying reiser4's
    behaviour, and the posts you really need to read aren't about reiser4).

    > > It's already been tried. You will also find sensible ideas on what
    > > semantics it should have to do it properly.
    >
    > OK, I understand the "slash -> directory, no-slash -> regular file"
    > semantics.
    >
    > How do you envision implementing this for "mount directory over file"?

    Somewhere deep in that thread is a discussion between Al Viro and
    Linus on it.

    > A new mount flag indicating that it's only to be followed down if
    > there's a slash after the mountpoint?

    The new flag would indicate more than that: These mounts should be
    detachable in the sense that deleting the file is possible, and
    perhaps renamable/linkable too. That's the stuff Al Viro discusses in
    some detail in the big thread.

    Ideally we'd like automounting, a bit like the Hurd's translators.
    Attached to files (using an xattr or something, and executed with the
    uid/gid of the file owner), and also per-user "pattern->action"
    options for matching files with a certain type (e.g. tgz/zip/deb/rpm/xml).

    But that can be added much later, as it's an orthogonal feature.

    -- Jamie
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  • Next message: Daniel Barkalow: "Re: Re: Re: [ANNOUNCE] git-pasky-0.3"

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