From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ewsoutbound.kpnmail.nl (ewsoutbound.kpnmail.nl [195.121.94.185]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC1F3374725 for ; Thu, 16 Apr 2026 21:42:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.121.94.185 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776375766; cv=none; b=SIwRewFjYGoz8P+1LkSKmlZj/o+7IXP04KVLfw5I0HvtAg24sSu/CkaZpOJ/JVHLYy83ii/KwObzJCOgs7z4+CEKk5RZ3beFPv7A8US0p4rn1vG2UV8yliaOWzTvfjK/PGZBcXi0FAiViXvUoyIFhCVkfD3sX87RPlclk5kq9zk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776375766; c=relaxed/simple; bh=IwAI1eaHkbzl2q25/fu93jl9Wz9VGjZ9ldalur0MsOw=; h=Date:From:To:Cc:Message-ID:In-Reply-To:References:Subject: MIME-Version:Content-Type; b=LaFsVhyyKUxCX01xb0UIprpvHjEodOcZzav47zZxdO/4YGWCWoD78jy5XAJ058OVRZt7jRZ4IarWdUwxx5TVZ92CUr3VakCagx+cl0Y8OWjVStjkDYF7liYMA9C8pKuH5cCCzl8A5F6GWWz1dDQWf3QJNrO+03sfX/SOKoWiBng= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xs4all.nl; spf=pass smtp.mailfrom=xs4all.nl; dkim=pass (2048-bit key) header.d=xs4all.nl header.i=@xs4all.nl header.b=MUYIXaJy; arc=none smtp.client-ip=195.121.94.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xs4all.nl Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xs4all.nl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=xs4all.nl header.i=@xs4all.nl header.b="MUYIXaJy" X-KPN-MessageId: 32e0422c-39dd-11f1-8ff3-005056999439 Received: from mta.kpnmail.nl (unknown [10.31.161.188]) by ewsoutbound.so.kpn.org (Halon) with ESMTPS id 32e0422c-39dd-11f1-8ff3-005056999439; Thu, 16 Apr 2026 23:42:42 +0200 (CEST) Received: from mtaoutbound.kpnmail.nl (unknown [10.128.135.189]) by mta.kpnmail.nl (Halon) with ESMTP id 32e07e84-39dd-11f1-80f0-00505699693e; Thu, 16 Apr 2026 23:42:42 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xs4all.nl; s=xs4all01; h=content-type:mime-version:subject:message-id:to:from:date; bh=FAFUNkukKmRTaQDP/ma8ntJhtsdj1vX5Rro9/2jNENo=; b=MUYIXaJyQI/z3eS8we80k6cReqZOrGcNyJH+eOsM0PptZLrLaRasoV7obwF6je4Oo1F2Q53g1dTaC IqUymC6DxzUPabRDzcTQxVCljJljWBkrMoSqBMJL+mujYUqHhSNcOaF+OlB+O2yQFWLbNkbwkM62Zj QTFjvEiZvQSp9l9vCH5z1nOjxZEzUkv8SgpuJrFLYZVB8+8Amvb8f8a7CHidJFr9KB/0c/jl2Ro+YJ 3EAFYuqHM0s2N/vB0gIaxS+hlOwiX48TqlzjMMe7LhmYtAcQfa4fDPkuGVhYzQgAYbekHDwRYfhrmB F5Mm/8EXhFl5j2TfObuqEdb6zzgWXLg== X-KPN-MID: 33|cxvwz6XIh+mQ5m5d80I6DfGs94zM1K2dlrRj5bchq6IoGGsUJF3RLVRm5g9uaXO 0Y2LlUpPPKVH+u9Ml0x0eZDNcQV0BtHa3qhSktN2o5wg= X-CMASSUN: 33|g5BgIBUMSqbIpNgwKf2oxyuAmj7HBGNP8+CYku9NjRFoxoUsKfnp9wSbpLST/jO DqmCC/FRLwMqigt+cG6u52A== X-KPN-VerifiedSender: Yes Received: from cpxoxapps-mh02 (cpxoxapps-mh02.personalcloud.so.kpn.org [10.128.135.208]) by mtaoutbound.kpnmail.nl (Halon) with ESMTPSA id 32d2c916-39dd-11f1-94b1-00505699eff2; Thu, 16 Apr 2026 23:42:42 +0200 (CEST) Date: Thu, 16 Apr 2026 23:42:42 +0200 (CEST) From: Jori Koolstra To: Aleksa Sarai , Dorjoy Chowdhury , brauner@kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, ceph-devel@vger.kernel.org, gfs2@lists.linux.dev, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, v9fs@lists.linux.dev, linux-kselftest@vger.kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, jlayton@kernel.org, chuck.lever@oracle.com, alex.aring@gmail.com, arnd@arndb.de, adilger@dilger.ca, mjguzik@gmail.com, smfrench@gmail.com, richard.henderson@linaro.org, mattst88@gmail.com, linmag7@gmail.com, tsbogend@alpha.franken.de, James.Bottomley@hansenpartnership.com, deller@gmx.de, davem@davemloft.net, andreas@gaisler.com, idryomov@gmail.com, amarkuze@redhat.com, slava@dubeyko.com, agruenba@redhat.com, trondmy@kernel.org, anna@kernel.org, sfrench@samba.org, pc@manguebit.org, ronniesahlberg@gmail.com, sprasad@microsoft.com, tom@talpey.com, bharathsm@microsoft.com, shuah@kernel.org, miklos@szeredi.hu, hansg@kernel.org Message-ID: <2059025134.378522.1776375762839@kpc.webmail.kpnmail.nl> In-Reply-To: <2026-04-16-upstate-capable-deacon-petals-0l25lH@cyphar.com> References: <20260328172314.45807-1-dorjoychy111@gmail.com> <20260328172314.45807-2-dorjoychy111@gmail.com> <2026-04-16-upstate-capable-deacon-petals-0l25lH@cyphar.com> Subject: Re: [PATCH v6 1/4] openat2: new OPENAT2_REGULAR flag support Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Priority: 3 Importance: Normal > Op 16-04-2026 17:15 CEST schreef Aleksa Sarai : > > > Oh, I didn't notice that this wasn't mentioned here, we had a separate > discussion about it in a thread with Jori and I must've assumed we > discussed it in both. (My brain is also really not wired up to read > large octal values easily.) > > While it is hard to add new O_* flags (hence OPENAT2_REGULAR), it's not > /impossible/ (Jori has a patch for OPENAT2_EMPTY_PATH that is safe to > add to O_* flags because of some fun historical coincidences). But it would change userspace, at least in theory, right? If anyone for some reason decided to set whatever the bit will be for O_EMPTYPATH in a call to openat(), and pass an empty string, relying on this to fail, that will no longer be the case. But that is just really silly. Or are you hinting on something else? Thanks, Jori.