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Re: vnode_to_path()

> It's not just $ORIGIN that can make use of it.  Imagine for a moment
> getting a backtrace automatically on a segfault.  It's a lot easier
> and more reliable if you get access to the debug sections.  Those are
> normally not mapped though, so you need access to the path.

Actually, you don't.  You need read access to the executable; whether
you get that access via a path or not is irrelevant.
/proc/curproc/file can address this; so could some kind of

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