SUID directories -- security concern?

[Clarence Dold]

> In article <2946 at auspex.auspex.com> guy at auspex.auspex.com (Guy Harris) writes:

>> >>I've never seen any code to make use of a SUID directory, ...

I would suspect that code was written on a SysV 3.x system, that uses
chmod to set the directory permissions to the new protections, and the 
code, now being run pre-3.x, produces bits that aren't understood, although
they can still be set.
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