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 91FED37648C; Thu, 22 Jan 2026 16:03:34 +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=1769097814; cv=none; b=JxxkZbngosK0whKP6V5SnFnT3gA7DLTYWlijtf2tzTl7q9ubJJTlFgGWg0iXhZUfCPO5dScrKVn7MWrlGE9XigWDYUr/38106DuoJPtnQ0JTfWhjSzeKOvErspXZvCtl0Z2cU/19+KTi7JwZyiehGCaiT3nBztuHPhtHLHs3J9s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769097814; c=relaxed/simple; bh=PrjBIgqMZlEiWazg7UCKbeIwEx1gUf+zQ+J1E5IoNSw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WpQmhIBPWX0E6fJO3gdQLE2npUmkgSHE+Neoyz+Us2I/gtCvqpIlIWs0ek7jpZI3vkfMaIkND2T67XD3/nzkgPLfWwusv5Sitc2I39GGjmOcJ4aReLLmZsChX6T1d1IAQX/UrqwA8PNrsDNaMYoxqowEkcFfdX+HpHpkeU2Hjqs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IKCkgvAo; 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="IKCkgvAo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1222BC19425; Thu, 22 Jan 2026 16:03:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769097813; bh=PrjBIgqMZlEiWazg7UCKbeIwEx1gUf+zQ+J1E5IoNSw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IKCkgvAoZmGIRN95yLR39VWoG8ht6zNmNM8Kc9ogmsU4v/mqfyfFpmBza3cerGwrt fwXXKFfANAVlgByho9c3D2O8rGbaB0MPHC0/1EKMiC4hZy+7XoHpx39MG5HUJFBWa6 RKFbSfogNdO1fdC/FpV4eZwZJNwoPexdd+ta0lBLY28wqr1kmaCuWpQ3DK1Tn/XEfe j8mV/CrLr2yWPF+zuzQFj1C2M2H3KMZxs7l3VBmUOZFqKIKUNFm+KuPqi+sYQHstq8 FowLN7iCDCAsShQkPuGKGwHuY/fKIyGRVDwtF0dxvGZiR+AWX16Ld8phS/EjQ0IalO l2yiQmg+1FqQA== 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-api@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 v7 07/16] ext4: Report case sensitivity in fileattr_get Date: Thu, 22 Jan 2026 11:03:02 -0500 Message-ID: <20260122160311.1117669-8-cel@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260122160311.1117669-1-cel@kernel.org> References: <20260122160311.1117669-1-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 the FS_XFLAG_CASEFOLD flag. 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 | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 7ce0fc40aec2..462da7aadc80 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -996,6 +996,13 @@ 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); + /* + * Case folding is a directory attribute in ext4. Set FS_XFLAG_CASEFOLD + * for directories with the casefold attribute; all other inodes use + * standard case-sensitive semantics. + */ + if (IS_CASEFOLDED(inode)) + fa->fsx_xflags |= FS_XFLAG_CASEFOLD; return 0; } -- 2.52.0