Nasty Security Hole?

[Doug Gwyn]

In article <2470 at aplcomm.jhuapl.edu> trn%warper.jhuapl.edu at aplvax.jhuapl.edu (Tony Nardo) writes:
>A pity the implementers of UNIX didn't borrow one the idea of having a
>separate "delete" bit.  It's one of a number of DEC features I miss.

What in the world would it MEAN?  It is the DIRECTORY that is modified
by an unlink, not the inode.  Would a "delete" bit then mean that no
links to the inode could be removed?  Think about the consequences for
a bit.  It would be horrible!