Date: Sat, 16 May 2020 00:47:24 +0200 From: Steffen Nurpmeso <steffen@sdaoden.eu> To: freebsd-hackers@freebsd.org, hackers@freebsd.org Subject: Re: [HEADSUP] Disallowing read() of a directory fd Message-ID: <20200515224724.WFACq%steffen@sdaoden.eu> In-Reply-To: <20200515220923.GA36597@bec.de> References: <202005142017.04EKH0aA093503@fire.js.berklix.net> <202005152000.04FK0tjk006516@slippy.cwsent.com> <20200515202526.GZ82984@trajan.stk.cx> <20200515220923.GA36597@bec.de>
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Joerg Sonnenberger wrote in <20200515220923.GA36597@bec.de>: |On Fri, May 15, 2020 at 10:25:26PM +0200, Arne Steinkamm wrote: |> On Fri, May 15, 2020 at 01:00:55PM -0700, Cy Schubert wrote: |>> It's been 42 or more years since this bug was introduced. Let's \ |>> just fix it |>> now instead of agonizing over it. |> |> I didn't want to add something as everything is said, |> but this sentence is a little bit to provocative. |> |> Everything is a file describes one of the defining features of Unix. |> |> Calling this defining feature of Unix a bug shows to me that the ideas |> behind Unix got lost in the FreeBSD universe too... | |Using linear storage for a directory is an implementation detail of the |implementation. It's not a defining feature. "Reading" from a directory |doesn't make sense for many other organisational forms. So, are you now |arguing that leaky abstractions are a defining feature of Unix? In an ideal Unix world read(2)ing from a directory fd would do the job that getdents(2) / getdirentries(2) never moved to a standard, leaving us with that terrible readdir(3) stuff. imho. --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)
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