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 1A14B37E312; Mon, 12 Jan 2026 17:46:54 +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=1768240015; cv=none; b=jXjt6P/RRsrAnSABsSxJgKafApGxY6aCBHh7YdHeA6EplmDw9cUhAwMGvU3GFqvKVfW7Jcx39UJzCXUAE1mfWe/1x8Uo9mrdnPl296r91XkDT5tqLVJit5QWvZoJIDoWSXQC9EHNq45R/6JZezRnk6BdCw3bmT8QhjvAyLDiT/8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768240015; c=relaxed/simple; bh=adSYz/aH/JJhedd8LYc9zNP3COoAonVjNEu8GDlmYN0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iStV+2BHCPSVrFaaOdNHhDGKd/mnS91B2DNBvkO4c42CiZy00vJZ0NyEZ/Ty558Mf/lN7whvUzPbJIGLeulWaJintYY8qdH4xvCrLDv+ba9tSR/QS349MLtJvtqlvzlU8btzlCl0KVl8VcJ0GVeWAG2RLbFh6jJIHat3Pggx7to= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=H1YEe+sG; 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="H1YEe+sG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8266BC116D0; Mon, 12 Jan 2026 17:46:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768240014; bh=adSYz/aH/JJhedd8LYc9zNP3COoAonVjNEu8GDlmYN0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H1YEe+sGuhJi2JzEnSEQOyOSwvYlYMSE7wCuiosOgAuf2xeSKcPV45t8RfNFxwfFi YpvBLv419Mi7UO+E+WF6n1IFJ47Wb53mx8s4sA7BFIWm6+xyEI0OM7UxdjHlfBdRLg Y/fUWVTAKEVJAXsq2nJq+C616NW7vStwnPGwMTVQCImwsbWURRMmSukYqLXKL7rKy0 SCZYOORfI3aj2e2+wauvVKczlgj0XniWIKwWP9aA6e4SG9sKlVIcA9icjUeGkP0bPY o6gGAGvHoA4vOUOjbESXPtOfb3YN7x/bu3x2qWuVPbkN4F+4d/ld04d2Okp9fLvhF2 OaaVFRp7yK5ww== From: Chuck Lever To: vira, 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 v3 07/16] ext4: Report case sensitivity in fileattr_get Date: Mon, 12 Jan 2026 12:46:20 -0500 Message-ID: <20260112174629.3729358-8-cel@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260112174629.3729358-1-cel@kernel.org> References: <20260112174629.3729358-1-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). Signed-off-by: Chuck Lever --- fs/ext4/ioctl.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 7ce0fc40aec2..653035017c7f 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -996,6 +996,14 @@ 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 always preserves case. If this inode is a casefolded + * directory, report case-insensitive; otherwise report + * case-sensitive (standard POSIX behavior). + */ + fa->case_insensitive = IS_CASEFOLDED(inode); + fa->case_preserving = true; + return 0; } -- 2.52.0