From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id C466B3858012 for ; Thu, 18 Nov 2021 18:37:26 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org C466B3858012 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-359-rUGFPJObOySZdXDmPOs4qw-1; Thu, 18 Nov 2021 13:37:25 -0500 X-MC-Unique: rUGFPJObOySZdXDmPOs4qw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2499F10144EC for ; Thu, 18 Nov 2021 18:37:24 +0000 (UTC) Received: from greed.delorie.com (ovpn-112-12.phx2.redhat.com [10.3.112.12]) by smtp.corp.redhat.com (Postfix) with ESMTPS id ED8415BAE0; Thu, 18 Nov 2021 18:37:23 +0000 (UTC) Received: from greed.delorie.com.redhat.com (localhost [127.0.0.1]) by greed.delorie.com (8.15.2/8.15.2) with ESMTP id 1AIIbM9n2958821; Thu, 18 Nov 2021 13:37:22 -0500 From: DJ Delorie To: Florian Weimer Cc: libc-alpha@sourceware.org Subject: Re: [patch v3] Allow for unpriviledged nested containers In-Reply-To: <87wnl5hf2f.fsf@oldenburg.str.redhat.com> Date: Thu, 18 Nov 2021 13:37:22 -0500 Message-ID: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.5 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Nov 2021 18:37:27 -0000 Florian Weimer writes: > Do we actually need to enter a PID namespace? Well, for the pldd test, obviously we do ;-) > Maybe we should do that only if we know we can mount /proc in the > namespace. So given three options: 1. No /proc 2. /proc in wrong namespace 3. /proc in correct namespace We'd prefer 3, then 1, but not 2?