From patchwork Wed Feb 21 21:24:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Seth Forshee (DigitalOcean)" X-Patchwork-Id: 13566420 X-Patchwork-Delegate: paul@paul-moore.com Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 95A761292F2; Wed, 21 Feb 2024 21:25:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708550706; cv=none; b=OUhjUqUp9GAagDE/p+8QTS7s6gMyuGFOZT58Kp08OSIDhHok3xTJPp07e0nedtkrVzyCp6V7Fh5U1P9Ekq8CaD7XetOwP2knhK3aVundWbkH/KRGrF4JvnjmEs7KwRbW+FtGa+qwQN0lKS7GgRi+wGMDM48l+HWKYfVenduRtOI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708550706; c=relaxed/simple; bh=MjPDmuGYxTwVV3XD9s9x96VSdlRd13Fx8UY16afoWLI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=dHBnN2FQAk/IZKQ+qavkZvjRz2BAu24srcaL3wQqWxH5JT0sxHYWSrkndUr/TFV9BK4d83pUBHACMm6VNHLi36D1l7oLePl+Uo8UrgvM4IvEs0Y5QeYjxTjCJbr47vlXPiBCke8XZl3kjBTE3yX1poXeih9vfVbyFRMkGAyNUEo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=G+32nzQs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="G+32nzQs" Received: by smtp.kernel.org (Postfix) with ESMTPS id 4790EC43390; Wed, 21 Feb 2024 21:25:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708550706; bh=MjPDmuGYxTwVV3XD9s9x96VSdlRd13Fx8UY16afoWLI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=G+32nzQsv2yA6coHTy2HUa1t9RBiDR2AasBhQofnI4QyW/IVAwvXXtib5syKL9VI1 XYeuJazXkEnUDWxhHFfB30px/QQ4SZ/lM2CQjtlruAVC7gHMI5V339a0r19mU3WKr7 pxQFGREc7DUro23NFpTz4WpsaaqIhWsbSeSqXDix962HqnmSMg38nn8fZcH+cp4GpR y8cRFE8J63EdITcOIkUI6OFpmlgs0znPBuyzPWB2OFW4RKCYY32zWkqnziQ+o0/LDA mFAYc2ntRvNmb8wPKZXXv+G9IziYus6/LQ1MFu9rb5vtZr1bAxNPAGvKYyTt3yocWG RUyg3VTXWCdwA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36F87C5478B; Wed, 21 Feb 2024 21:25:06 +0000 (UTC) From: "Seth Forshee (DigitalOcean)" Date: Wed, 21 Feb 2024 15:24:39 -0600 Subject: [PATCH v2 08/25] xattr: add is_fscaps_xattr() helper Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240221-idmap-fscap-refactor-v2-8-3039364623bd@kernel.org> References: <20240221-idmap-fscap-refactor-v2-0-3039364623bd@kernel.org> In-Reply-To: <20240221-idmap-fscap-refactor-v2-0-3039364623bd@kernel.org> To: Christian Brauner , Seth Forshee , Serge Hallyn , Paul Moore , Eric Paris , James Morris , Alexander Viro , Jan Kara , Stephen Smalley , Ondrej Mosnacek , Casey Schaufler , Mimi Zohar , Roberto Sassu , Dmitry Kasatkin , Eric Snowberg , "Matthew Wilcox (Oracle)" , Jonathan Corbet , Miklos Szeredi , Amir Goldstein Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, audit@vger.kernel.org, selinux@vger.kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-unionfs@vger.kernel.org X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=898; i=sforshee@kernel.org; h=from:subject:message-id; bh=MjPDmuGYxTwVV3XD9s9x96VSdlRd13Fx8UY16afoWLI=; =?utf-8?q?b=3DowEBbQGS/pANAwAKAVMDma7l9DHJAcsmYgBl1mofpeDW0VRFpT+qzsFdS/fHW?= =?utf-8?q?j5IKuhck4JZotJG_3ni+RRWJATMEAAEKAB0WIQSQnt+rKAvnETy4Hc9TA5mu5fQxy?= =?utf-8?q?QUCZdZqHwAKCRBTA5mu5fQxyRAAB/_9E0ZBYKot+MRKSR27p0Kv0vDG4b1T8VUYNX?= =?utf-8?q?dxn7GTVrucCBGVtpVtqSyN8mJcxmFFj6dgjcjWE/8Fq_5ZjeTdXL+YyPRBKcf0KBr?= =?utf-8?q?bLryipvjsqSujzheGkbqC8maXAS3ScS4R+vuzpQuiMRBhwd432RWhFkRu_ALGbz9F?= =?utf-8?q?zAX6BGGK/+JaabY7XD/jynxRjg5i8POSN19q0OJlsOqUpYJrmjTusaT4lCzgC+6ix?= =?utf-8?q?XcwFzw_+z6fBZXxwGNAJ/G0yohMDqfv4/nS298M7iKZhieHyKr5Hz/dZ+rOFIiwoG?= =?utf-8?q?WzyRw8ccnmGTkNSWT3Dq?= Yxtsflp7R+yVNxyPqIPgRpugwoXtdA X-Developer-Key: i=sforshee@kernel.org; a=openpgp; fpr=2ABCA7498D83E1D32D51D3B5AB4800A62DB9F73A X-Endpoint-Received: by B4 Relay for sforshee@kernel.org/default with auth_id=103 Add a helper to determine if an xattr time is XATTR_NAME_CAPS instead of open-coding a string comparision. Suggested-by: Amir Goldstein Signed-off-by: Seth Forshee (DigitalOcean) Reviewed-by: Christian Brauner --- include/linux/xattr.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/xattr.h b/include/linux/xattr.h index d20051865800..cbacfb4d74fa 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -28,6 +28,11 @@ static inline bool is_posix_acl_xattr(const char *name) (strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0); } +static inline bool is_fscaps_xattr(const char *name) +{ + return strcmp(name, XATTR_NAME_CAPS) == 0; +} + /* * struct xattr_handler: When @name is set, match attributes with exactly that * name. When @prefix is set instead, match attributes with that prefix and