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Date:   Sat, 16 May 2020 21:47:38 -0700 (PDT)
From:   Christian Kujau <>
To:     Patrick Donnelly <>
cc:     Al Viro <>,
        open list <>,
        Jeff Layton <>,,
Subject: Re: file system permissions regression affecting root

On Wed, 13 May 2020, Patrick Donnelly wrote:
> However, it seems odd that this depends on the owner of the directory.
> i.e. this protection only seems to be enforced if the sticky directory
> is owned by root. That's expected?

According to the documentation[0] this appears to be intentional:

   When set to "1" don't allow O_CREAT open on regular files that we
   don't own in world writable sticky directories, unless they are
   owned by the owner of the directory.


BOFH excuse #263:

It's stuck in the Web.

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