From owner-freebsd-fs@freebsd.org Sat Nov 9 13:50:43 2019 Return-Path: Delivered-To: freebsd-fs@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 48D4D1AA68C for ; Sat, 9 Nov 2019 13:50:43 +0000 (UTC) (envelope-from jbe-mlist@magnetkern.de) Received: from sapphire.magnetkern.de (sapphire.magnetkern.de [185.228.139.199]) by mx1.freebsd.org (Postfix) with ESMTP id 479JSK6nfVz3HXT; Sat, 9 Nov 2019 13:50:41 +0000 (UTC) (envelope-from jbe-mlist@magnetkern.de) Received: from titanium (p57A35420.dip0.t-ipconnect.de [87.163.84.32]) by sapphire.magnetkern.de (Postfix) with ESMTPSA id 1FAD4AC9C; Sat, 9 Nov 2019 13:50:24 +0000 (UTC) Date: Sat, 9 Nov 2019 14:50:23 +0100 From: Jan Behrens To: Andriy Gapon Cc: freebsd-fs@FreeBSD.org Subject: Re: ZFS snapdir readability (Crosspost) Message-Id: <20191109145023.688cfa3e4b8271399814c4d2@magnetkern.de> In-Reply-To: References: <20191107004635.c6d2e7d464d3d556a0d87465@magnetkern.de> <20191107012027.9639f3a9dda1941518358a52@magnetkern.de> <0a823048-d191-72e8-e20b-0491ebd4ea4a@peak.org> <20191107033622.16414272ae743d50f75786ec@magnetkern.de> <46343d6b-b614-2942-a28c-1ba8f28dd5a0@FreeBSD.org> <20191108125226.4ffebc252e69c6cfa3c82165@magnetkern.de> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; amd64-portbld-freebsd12.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 479JSK6nfVz3HXT X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of jbe-mlist@magnetkern.de designates 185.228.139.199 as permitted sender) smtp.mailfrom=jbe-mlist@magnetkern.de X-Spamd-Result: default: False [-1.21 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; NEURAL_HAM_MEDIUM(-0.80)[-0.801,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; MV_CASE(0.50)[]; DMARC_NA(0.00)[magnetkern.de]; NEURAL_HAM_LONG(-0.99)[-0.990,0]; IP_SCORE(0.28)[ipnet: 185.228.136.0/22(1.98), asn: 197540(-0.57), country: DE(-0.01)]; RCPT_COUNT_TWO(0.00)[2]; RCVD_NO_TLS_LAST(0.10)[]; RECEIVED_SPAMHAUS_PBL(0.00)[32.84.163.87.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.10]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:197540, ipnet:185.228.136.0/22, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; FROM_EQ_ENVFROM(0.00)[] X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Nov 2019 13:50:43 -0000 On Fri, 8 Nov 2019 15:19:07 +0200 Andriy Gapon wrote: > On 08/11/2019 13:52, Jan Behrens wrote: > > [...] I believe adding an option to restrict > > readability of .zfs/snapdir to the owner of the root would > > significantly improve security, [...] > > I would not object to having something like snapdirmode property. > I think that it's reasonable. > > -- > Andriy Gapon Is it difficult to implement that? I assume it would require a new zfs pool feature to create such a new property? Regards, Jan