From owner-freebsd-hackers@freebsd.org Fri May 15 16:11:30 2020 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8C0502F956D for ; Fri, 15 May 2020 16:11:30 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 49Nth21LrVz43j7 for ; Fri, 15 May 2020 16:11:30 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: by mailman.nyi.freebsd.org (Postfix) id 2C66F2F956B; Fri, 15 May 2020 16:11:30 +0000 (UTC) Delivered-To: hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 2C1C02F956A; Fri, 15 May 2020 16:11:30 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 49Nth03KL7z43j4; Fri, 15 May 2020 16:11:27 +0000 (UTC) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (v-critter.freebsd.dk [192.168.55.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by phk.freebsd.dk (Postfix) with ESMTPS id A2F331AF18C; Fri, 15 May 2020 16:11:25 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.15.2/8.15.2) with ESMTPS id 04FGBPOZ044548 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 15 May 2020 16:11:25 GMT (envelope-from phk@critter.freebsd.dk) Received: (from phk@localhost) by critter.freebsd.dk (8.15.2/8.15.2/Submit) id 04FGBOt2044547; Fri, 15 May 2020 16:11:24 GMT (envelope-from phk) To: "Julian H. Stacey" cc: "freebsd-arch@freebsd.org" , "freebsd-hackers@freebsd.org" , Kyle Evans , Alan Somers , Arne Steinkamm Subject: Re: [HEADSUP] Disallowing read() of a directory fd In-reply-to: <202005151504.04FF423p040952@fire.js.berklix.net> From: "Poul-Henning Kamp" References: <202005151504.04FF423p040952@fire.js.berklix.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <44545.1589559084.1@critter.freebsd.dk> Content-Transfer-Encoding: quoted-printable Date: Fri, 15 May 2020 16:11:24 +0000 Message-ID: <44546.1589559084@critter.freebsd.dk> X-Rspamd-Queue-Id: 49Nth03KL7z43j4 X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of phk@critter.freebsd.dk designates 130.225.244.222 as permitted sender) smtp.mailfrom=phk@critter.freebsd.dk X-Spamd-Result: default: False [-1.70 / 15.00]; ARC_NA(0.00)[]; TO_DN_EQ_ADDR_SOME(0.00)[]; NEURAL_HAM_MEDIUM(-0.78)[-0.776,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-0.97)[-0.971,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.dk]; RCPT_COUNT_FIVE(0.00)[6]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; IP_SCORE(0.04)[ip: (0.06), ipnet: 130.225.0.0/16(0.08), asn: 1835(0.08), country: EU(-0.01)]; FORGED_SENDER(0.30)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:1835, ipnet:130.225.0.0/16, country:EU]; FROM_NEQ_ENVFROM(0.00)[phk@phk.freebsd.dk,phk@critter.freebsd.dk]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 May 2020 16:11:30 -0000 -------- In message <202005151504.04FF423p040952@fire.js.berklix.net>, "Julian H. S= tacey " writes: >No. Root is Root regardless if in a jail or not. No. See also: https://papers.freebsd.org/2000/phk-jails/ = -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe = Never attribute to malice what can adequately be explained by incompetence= .