From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792639045; b=s7uwTLvRgEmXolD9kJwH6qtnXCcotAV6qCkQMcTto/yETRKAruDFkiTXGAH8G3jRz5eF 5Ligy5UCzDe5ICIj+cqDGvUK1RRhJnlGjBvW8rEMNY7VADJO9xCfaqWWT9sQVZcZQ4PPp waDvmpfeCtywcfff8xYV5R1BBKLqxz3iOYAteyJERh1L0S9GEA3P5OCVYcyO+rEm5zJmo tf01Lq6s4mekm5bIC+67gAfrLmaDVCWwrXOvOMk6NUUFpHcLo9lYaYRevq37c2IGvWYyn QrQwwQW8m5AAX0Btesbj3d6K+IlIWTIWgLQJIBvnD4jVz25hVsBMvSubhSqIOW7Pk+w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792639045; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=bx6QWKD/euDZMtEpRXog2V0i+1UhpJag8Fg+fUT4ibM=; b=forHQKFBgDxmtbg4xaE4gvAginfAG/kkoe1nx6H4eUq7j/YWNzQgyBQSCYPaQyGMGS9H ZuRAS6fazk28PVD+wccFkPs+wJkBBY3TdoIgfyrMx8Ee71g/RTZ6kdHzJvnr3BrKGNoaa X6eX/suk06qYF33iLMHVq52RvV0p26/r/XdV6DKYP/fW1Pq/mBRyNr2vwxtOF2owNGfP6 s/U8FEFsAk/DB5H7PdEY100YisK697bYiirDLYDJd3Sy9VlmSPYkHnb2UZiM/2eRfqXKn g6g4ZYWfPLEiFIj1tCUS7hgKSHJji6zfRckjS4Qjhfl/TJQ6Hemf3SDmebEFPQaa0Sg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=V4ywl8Mg; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B550606A326; Thu, 22 Oct 2026 03:17:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=V4ywl8Mg Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB68E1F000C2; Thu, 22 Oct 2026 03:17:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792639045; bh=bx6QWKD/euDZMtEpRXog2V0i+1UhpJag8Fg+fUT4ibM=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=V4ywl8Mg+wiP5ipROrQ8folI+kEWeg6B+xVxWQzHV65jEjhgyPAl60MiLs7KOJsZh fIuqSUNKavq20EuIwPXo4uZjfVqv5atW21CfsFVEHXSKm+SF8OkuTY07V1osaK1Ugc 9CihL1Y1478d9ZOCFY6BbdzeBYL+rULyQEaAAOYTBaaD+mWnwv5u9eKCQpV2P5MUeq ROrBztPzEcr+2gN6pqhhNEcuP/25zuQni6r/gP7uJPTuLlPx5yCNcRYj4USbBDloK/ SrSZri5/KmLfWpiRPAXepOzHRQK9yk+gHkrOSD+d/Xd44eAYoeiEjx12x7cAOBa8/f KQAyZu8n0M7Kg== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [RFC PATCH v2 02/41] uapi: add for 128 bit capable user and group ids Reply-To: sashiko-reviews@lists.linux.dev To: "Jan Koester" Cc: linux-security-module@vger.kernel.org, linux-ext4@vger.kernel.org, audit@vger.kernel.org, tytso@mit.edu In-Reply-To: <423713b22f1cfa384f3df8cddc91e81d35c52d8a.1792552161.git.jan.koester@tuxist.de> References: <423713b22f1cfa384f3df8cddc91e81d35c52d8a.1792552161.git.jan.koester@tuxist.de> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 22 Oct 2026 03:17:24 +0000 X-Mailing-List: audit@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > User and group ids are 32 bit numbers. Identities that come from > elsewhere -- UUIDs handed out by a directory service, or the GUIDs of a > Windows domain -- have to be squeezed into that range through mapping > tables kept in userspace, and the kernel never sees who a process really > is. >=20 > Add a tagged id for a new family of system calls (named after the > classic ones with an _r suffix): a classic 32 bit id, an RFC 9562 > version 4 UUID, or a Microsoft GUID in the byte order Windows stores it > in. Type 0 is "no id", so a zero-initialized id is never root, and lets > the set*id_r() calls express "unchanged" without a magic number. >=20 > The struct has no 64 bit members and the same layout on all ABIs, so > none of the new calls needs a compat entry point. >=20 > Assisted-by: Claude:claude-opus-5-5 >=20 > Signed-off-by: Jan Koester Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/cover.1792552161.gi= t.jan.koester@tuxist.de?part=3D2