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Date:   Sun, 10 Sep 2017 22:26:08 +0200
From:   Jürg Billeter <>
To:     Al Viro <>
Subject: Re: new flag: AT_NO_JUMPS

Hi Al,

Might it make sense to specify these lookup restrictions when opening
the directory (O_ROOT?) instead of specifying it for each lookup with
AT_* (or supporting both)? This might make it more useful when passing
directory fds between processes that do not use seccomp (where
AT_BENEATH could be enforced).

For my sandboxing use case, I'd be happy with either solution, though.
Is there anything I can do to help move this forward?

Best regards,

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