Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp745568pxb; Thu, 21 Jan 2021 20:19:12 -0800 (PST) X-Google-Smtp-Source: ABdhPJzFsw6gHbtQ2vA32EwNeT61CNUEnOaVTFZBAUdlssekBqOmGAIzZzRVkRAJSqpJ2WI+L9Wa X-Received: by 2002:a50:8b02:: with SMTP id l2mr1714586edl.322.1611289152229; Thu, 21 Jan 2021 20:19:12 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611289152; cv=none; d=google.com; s=arc-20160816; b=z6Vzudf8JKH2Ogc2gcVaPcQVf5ZIzgTtCkKXNbCvj/Pw8kiIbu3ujSHdbgA8cd6uEf QjAEvNiTFr1C1IDplobzWoIkoyRKCFtqIbiU2BdW1MwiBAsch48dCwnlCriOXXMDvxRG eSXIANQJUJpdvJmw4nO48wXFaPJbIenVKKEzWFP+PRF0RXplWZ5bJ+NTtXB3++PCcbnF pKn5SadvA7usoPDh5SovX8D84/0xqcdCDpAbZyUm6FmikcMx0lTWkD0yAuEjNQayyTfC e1C0jO60bc6rnst2rPYi0EW18zFbQuuySmWyF+Z2cXGSdMHW7gOX+w/rv7HD2u+eFaWo 4NVA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:message-id:in-reply-to :subject:cc:to:from:date; bh=sek2mHnqNrQGShkcfWYJ5uG3EKt1hDHOg/Ik0Z4mYD4=; b=YB1djV3vGMb4bf/jalFo0V2YlbymdkCfyz82YUIH8c3m9Fk5OkSBjseYO+h/WdT4Pg kzggRD0a5FDkpreHvBjjQKflSBiNp4yhZIE8JutA22eLnI19xfiVzDzOdv/WbBr9869h LYvld+oI+NLOHXGew8lAu5j/qgkAve8O9m6gZaZ0v5qYnMyXB4TzS9qvvIvU41We96Oe 8BGl5MjZwf4ZAbXpLBwKb1gfNigA0+XnuYk6Eo6xh3muZ0r+qnISfnIUiWAXBdOMMUcI GkIb3R5j7rC5tHg1GexLAJwqMTKKDqSYWJRaLnj6xY67Z1+URN1uM21Cj6/lGa8XlUT/ x/+Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d13si3040050edh.13.2021.01.21.20.18.48; Thu, 21 Jan 2021 20:19:12 -0800 (PST) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726714AbhAVEQQ (ORCPT + 99 others); Thu, 21 Jan 2021 23:16:16 -0500 Received: from namei.org ([65.99.196.166]:52910 "EHLO mail.namei.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726030AbhAVEQP (ORCPT ); Thu, 21 Jan 2021 23:16:15 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.namei.org (Postfix) with ESMTPS id E799DC92; Fri, 22 Jan 2021 04:14:42 +0000 (UTC) Date: Fri, 22 Jan 2021 15:14:42 +1100 (AEDT) From: James Morris To: Christian Brauner cc: Alexander Viro , Christoph Hellwig , linux-fsdevel@vger.kernel.org, John Johansen , Mimi Zohar , Dmitry Kasatkin , Stephen Smalley , Casey Schaufler , Arnd Bergmann , Andreas Dilger , OGAWA Hirofumi , Geoffrey Thomas , Mrunal Patel , Josh Triplett , Andy Lutomirski , Theodore Tso , Alban Crequy , Tycho Andersen , David Howells , James Bottomley , Seth Forshee , =?ISO-8859-15?Q?St=E9phane_Graber?= , Linus Torvalds , Aleksa Sarai , Lennart Poettering , "Eric W. Biederman" , smbarber@chromium.org, Phil Estes , Serge Hallyn , Kees Cook , Todd Kjos , Paul Moore , Jonathan Corbet , containers@lists.linux-foundation.org, linux-security-module@vger.kernel.org, linux-api@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-integrity@vger.kernel.org, selinux@vger.kernel.org Subject: Re: [PATCH v6 17/40] af_unix: handle idmapped mounts In-Reply-To: <20210121131959.646623-18-christian.brauner@ubuntu.com> Message-ID: <3e79875e-a32b-2974-b922-a2ed116305b@namei.org> References: <20210121131959.646623-1-christian.brauner@ubuntu.com> <20210121131959.646623-18-christian.brauner@ubuntu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Thu, 21 Jan 2021, Christian Brauner wrote: > When binding a non-abstract AF_UNIX socket it will gain a representation > in the filesystem. Enable the socket infrastructure to handle idmapped > mounts by passing down the user namespace of the mount the socket will > be created from. If the initial user namespace is passed nothing changes > so non-idmapped mounts will see identical behavior as before. > > Link: https://lore.kernel.org/r/20210112220124.837960-25-christian.brauner@ubuntu.com > Cc: Christoph Hellwig > Cc: David Howells > Cc: Al Viro > Cc: linux-fsdevel@vger.kernel.org > Reviewed-by: Christoph Hellwig > Signed-off-by: Christian Brauner Reviewed-by: James Morris -- James Morris