Re: [PATCH 0/3] namei: implement various scoping AT_* flags

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On Sat, Sep 29, 2018 at 09:34:24AM -0700, Andy Lutomirski wrote:
> Also, as a perhaps-silly suggestion: if you end up adding a new
> syscall, I can see a use for a mode that does the path walk but, rather
> than failing on a disallowed link, stops early and indicates where it
> stopped. Then web servers, samba, etc can more efficiently implement
> custom behavior when links are encountered.  And it may also be useful
> to have a variant of AT_THIS_ROOT where trying to escape is an error
> instead of having it just get stuck at the root.

AT_USER_LINKS indicating that userspace wants to resolve symlinks
themselves?



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