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    SubjectRe: foreign fs security features (was Re: NCPFS overhaul)
    Andrej Presern <> wrote:
    > The solution: you implement a object oriented capability model (pure,
    > not POSIX capabilities), then rebuild a UNIX (or any other) filesystem
    > on top of that if you still need it.

    Another way of getting global access to per-whatever variant file systems
    is to have a distinct root for each "whatever"'s view of the file system.
    Thus, if each user has a different view, look at
    /auto/users/fred/usr/local/src/linux to get fred's view, and
    /auto/users/george/usr/local/src/linux to get george's view.

    If each process has a different view, you look at
    /proc/1234/fs/usr/local/src/linux to get process 1234's view.

    All this assumes that the distinctions are made by the kernel.

    Expect to consume more resources running such a file system (dcache
    isn't going to be quite as useful in obtaining efficiency).


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      Last update: 2005-03-22 13:42    [W:0.020 / U:4.624 seconds]
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