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 B58F52F5A36; Tue, 17 Feb 2026 21:48:06 +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=1771364886; cv=none; b=oO9z/w2Av0EgrmO/dviSvcq6GQ3/o6BTAivE+2rebNLZCY0VVBDQa3OZBpV4X88C7Yobfh0Kirc2ptO0WATAb7BsEN1BvBVjhk1bh8OowSdDYqr5fiV3MA/s5aSoqej0MQl+ooDnQy4+miZnmZTkRBzViviLhxTgHZ3Ms3KgSyw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771364886; c=relaxed/simple; bh=hTKaZ1DqrpDPT8D9Hsa+8JFcRjOoKkJIQ9HwVjo6HdY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RApVpYCDp+mTQ3NHZFV+lhf/2Scei+kUPKPtSKtFagrBPM+majrkHh/iPKPH36FbMIvwi+Xhbo6/cUOUbMpVsJEnIbZ5E/oG1SPsFvv3M5/ikIPtioCxREAwWq195aCy4/nfaThZr0KX62jMvA6UZA9poHXTzW06vny4xb2I2Ik= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Es8TacpK; 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="Es8TacpK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 017B4C4CEF7; Tue, 17 Feb 2026 21:48:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771364886; bh=hTKaZ1DqrpDPT8D9Hsa+8JFcRjOoKkJIQ9HwVjo6HdY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Es8TacpKYI7rQxz+XweHWdzuT/zgCJVBa3OY1udo7vycYwkZ/4znBYaBURWNZ98Yp RaQBkNkUOE7+gcDQy72TK3tHy3S+DPEDc4/f4cD1VXk3BZlqyC+5npM3NSxCCNwepy UiZUNypdReMu0/4f/YwqwY/ku+wDMxEvRqooibz9MDIfkoIp9LC48t7+IawAOf3C6M idiefwYJQ3tc0TVrk99AVkHGvtc2M4WBG8tcLKvQ0uuhBZN/65dKUyoS0ZcdThHzzX UfBoiUsWeDDHpaVSQ6fwQFSPwDCe/KhijmTuVGcoeMWjpvROwpRKefnSiFS2rMBm+Z Q194pkU9htQ/w== From: Chuck Lever To: Al Viro , Christian Brauner , Jan Kara Cc: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-nfs@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 v8 08/17] ext4: Report case sensitivity in fileattr_get Date: Tue, 17 Feb 2026 16:47:32 -0500 Message-ID: <20260217214741.1928576-9-cel@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260217214741.1928576-1-cel@kernel.org> References: <20260217214741.1928576-1-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 3ae9cb50a0c0..a93017b80aa0 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -999,6 +999,13 @@ 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; } -- 2.53.0