From mboxrd@z Thu Jan 1 00:00:00 1970 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 B4DDA39C62F; Fri, 16 Jan 2026 14:46:37 +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=1768574797; cv=none; b=rif8Pc8rSkv8iyKgFqvTnNgmT46IWzNMypAJ1VxukqzIiUl3CnqOKruJr5Hlc33cQgYSMi9iP0NhiNWIp6Vd0ji1S27UEsLsSLLrjS66NVZ+wn1SvMJuZoi/rj7n5IGInmKuzPeXO3M7nySxV7xqEsQpsageWMVN8Flwni1/DCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768574797; c=relaxed/simple; bh=tyhvqqIS+ku3U7Hk/wztpIFyA6yZTojJ9ILKjB/tyUU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ue2Bk61cIn20ZczgUqaabtvLLSqb96IB4CK719l/bTMdQI6koJ/UZsoyhbr1loreOn+pubG/rJjrDKofK12jQ7VWNLXa9O7MFvr6Wuj1Xf322c35vLjLoUIkxEkbmjJ2PfMzzQTF9sSWSVXK1gw53GJEkwSFevNMwPCXj4jm+SU= 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+BrI+6n; 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+BrI+6n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 658B2C19421; Fri, 16 Jan 2026 14:46:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768574797; bh=tyhvqqIS+ku3U7Hk/wztpIFyA6yZTojJ9ILKjB/tyUU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g+BrI+6nlKHQZfkg5DDc/BbSQzbF8SNUNZIO/2QyelkLAE8q1wWo8MR88Fk5Hv1HM VBlnSa/OG03+z2mLQk7nfajOgsXCkpUNRxCIU9l24DyMDsc9Y/XwgVj7v4Pyj7zaVo 4iBrq4wEKDPY3N6ZKzQ1HfdxOnoEoUtjjbfKm+0Uc7KOL70yAYcVaZUtjRzDqy4o6r YEVijPjcCHCnMnvH5cPN9jduQWINKJO41WCcbEIhBUy0n+Dg9xLmcnImv462YAcWO1 5JeuW5sSA1GYYx6L2XlgTxi0kY6wAFLEVNNDRyfOAy50Pfvvo/CAWgLHZznkm6Uiif Vd8HEuVEnFrYQ== From: Chuck Lever To: Al Viro , Christian Brauner , Jan Kara Cc: , linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-cifs@vger.kernel.org, , linux-f2fs-devel@lists.sourceforge.net, hirofumi@mail.parknet.co.jp, linkinjeon@kernel.org, sj1557.seo@samsung.com, yuezhang.mo@sony.com, almaz.alexandrovich@paragon-software.com, slava@dubeyko.com, glaubitz@physik.fu-berlin.de, frank.li@vivo.com, tytso@mit.edu, adilger.kernel@dilger.ca, cem@kernel.org, sfrench@samba.org, pc@manguebit.org, ronniesahlberg@gmail.com, sprasad@microsoft.com, trondmy@kernel.org, anna@kernel.org, jaegeuk@kernel.org, chao@kernel.org, hansg@kernel.org, senozhatsky@chromium.org, Chuck Lever Subject: [PATCH v5 07/16] ext4: Report case sensitivity in fileattr_get Date: Fri, 16 Jan 2026 09:46:06 -0500 Message-ID: <20260116144616.2098618-8-cel@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260116144616.2098618-1-cel@kernel.org> References: <20260116144616.2098618-1-cel@kernel.org> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Chuck Lever Report ext4's case sensitivity behavior via file_kattr boolean fields. ext4 always preserves case at rest. Case sensitivity is a per-directory setting in ext4. If the queried inode is a casefolded directory, report case-insensitive; otherwise report case-sensitive (standard POSIX behavior). Reviewed-by: Jan Kara Signed-off-by: Chuck Lever --- fs/ext4/ioctl.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 7ce0fc40aec2..213769d217c3 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -996,6 +996,12 @@ int ext4_fileattr_get(struct dentry *dentry, struct file_kattr *fa) if (ext4_has_feature_project(inode->i_sb)) fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); + /* + * ext4 preserves case (the default). If this inode is a + * casefolded directory, report case-insensitive; otherwise + * report case-sensitive (standard POSIX behavior). + */ + fa->case_insensitive = IS_CASEFOLDED(inode); return 0; } -- 2.52.0