IRIX 3.2: new directory blocks not zeroed?

John H Merritt merritt at iris613.gsfc.nasa.gov
Fri Feb 16 15:31:41 AEST 1990


In article <90Feb15.191156est.6155 at neat.cs.toronto.edu> ken at cs.toronto.edu (Ken Lalonde) writes:
>
>	% cd /tmp
>	% cp /etc/passwd .		# any large text file will do
>	% rm passwd
>	% mkdir foo
>	% cat -v foo
>
>Bad news if you care about filesystem security.

Poor example, but the point is illustrated.  I could not read
the Ex.... files that 'vi' uses with the above technique.  What I could
do was read part of someone elses (mode 600) file that was placed there
and removed.  So we need a deamon that sits in /tmp waiting for files
to be deleted :-),  How do we monitor /tmp files?  No! No! No! don't
answer this; this discussion showed up in comp.unix.wizards.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
John H. Merritt                   #  Yesterday I knew nothing,
Applied Research Corporation      #  Today I know that.
merritt at iris613.gsfc.nasa.gov     #



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