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    SubjectRe: Using get_cwd inside a module.
    For changedfiles, using cut n' paste sys_getcwd, we've
    managed to get "good enough" functionality. When a
    user runs "touch foo" in /tmp/watch, when we intercept
    the openw, we manage to resolve "foo" to
    "/tmp/watch/foo". We still break on things like
    "touch ../../foo", since we resolve that to
    "/tmp/watch/../../foo" -- but that's pretty fixable
    with a little effort.

    NFS mounted filesystems still get us, since we rely on
    intercepting the system calls and putting a wrapper
    around them. I've looked into doing so, but I didn't
    see a way of doing so in a module -- and we haven't
    wanted to demand that users patch and rebuild a
    kernel.


    --- Christoph Hellwig <hch@infradead.org> wrote:

    >
    > Well, reporting a single path component relative to
    > the parent directory
    > is doable, there's just no way to have a canonical
    > absolute or
    > multi-component pathname.
    >


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