Date: Sat, 16 May 2020 17:18:10 +0200 From: "Julian H. Stacey" <jhs@berklix.com> To: freebsd-arch@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: [HEADSUP] Disallowing read() of a directory fd Message-ID: <202005161518.04GFIA0a099390@fire.js.berklix.net> In-Reply-To: Your message "Fri, 15 May 2020 20:30:08 -0700." <2ea8236f935a4c786a0f4f06ca1d3ea3@udns.ultimatedns.net>
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Another use of "cat ." is to see names of transient files a tool creates, & normaly deletes, if not aborting, so one can find same name junk elsewhere, & search for tool causing junk, & ensure other data files avoid using names that would be zapped. While blocking "cat ." might be worked round if not in a jail, & or if using fsdb & sysctl etc, it would add to a more BSD specific environment, where standard portable Unix skills was insufficient, & more time needed to search & learn BSD extras. Every obstacle costs employers time = money. Cheers -- Julian Stacey, Consultant Systems Engineer, BSD Linux http://berklix.com/jhs/ http://www.berklix.org/corona/#masks Tie 2 handkerchiefs or 1 pillow case. Jobs & economy hit by Corona to be hit again by Crash Brexit 31st Dec. 2020
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