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Date:      Sat, 26 Apr 1997 01:01:54 +1000
From:      Bruce Evans <bde@zeta.org.au>
To:        bugs@freebsd.org, jc@netview.net
Subject:   Re: owner sticky and mv
Message-ID:  <199704251501.BAA01527@godzilla.zeta.org.au>

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>I think I have found a bug while moving (mv) files from one filesystem to
>another.  Files that are owner sticky (in this case root) do not transfer
>their permissions properly.

This may be a feature.  The kernel rejects attempts by non-root to set
the sticky bit for non-directories.  mv(1) has no idea that the problem
is caused by the sticky bit, so it doesn't try another chmod() to set
the other bits.  The sticky bit has no direct effect for non-directories,
so perhaps is was being used by root to inhibit moving files :-).

Bruce



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