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 EE42C2F5A36; Tue, 17 Feb 2026 21:48:08 +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=1771364889; cv=none; b=qsYUazmHaX4rTs3WeefUmX3miNRNLSKQtoCwvaPFWCwCqDY1awViPPyMuVTdqTbV6pPsZ/xUyY4TQg7xCDX9GwM0mkwqaRR1ZuQVFl0zUT8rqLi68oq7zr6lEKJK2nLt2kVI6dw4NNlv9ZEmnEJVwxINk61tw0jXUtRad5o+ckI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771364889; c=relaxed/simple; bh=fYGZPGOvWWHJ29HyCpYpZWY5Spu1N7gwM+/38CEuEEk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=a6By33NpL3LSSSUCU4RhdNkLGweIHYpG6lMZeynACxdcv6XAXtT3tRspX98Q5m+RWLchm/KQhOmEB1MgY8niF3+R6zEfcX7m/SDqWXuMQs1ceXYPI1uELpEDYkcDZFH2xmzfgPl0gkJTrl6zcyUOnG/xvUwwUBq2TLE71Uoc0fY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S/Ai+S96; 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="S/Ai+S96" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EEA7C2BC87; Tue, 17 Feb 2026 21:48:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771364888; bh=fYGZPGOvWWHJ29HyCpYpZWY5Spu1N7gwM+/38CEuEEk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S/Ai+S96uG/Gfz7HATywK5Hdnt8vlyZtWhDrlsWq4+HHhqloU2FqnQCAUunQ+j2+S CDkoGtknNKSJ9d7s0NeTIWe1e52obwCxwbH7zpZ+yKOspWldxxhnElIJDNkXxvKWov XYuXCW1yVlmz2jI2JL0FOF6EYG4ieCR7GpxwWJU+XbE5n6tQvUEibFHmHgxySgNUPT HkjR5pf3qNY/RNRescro07eKCGuHm2wqmybZ2Mz2dDVIFTfZ4dhIP5PU4aVMzh/+xu W1azjC78aQfLp7Dp57Alvp0WlZ7Pk5Pp7qQx8VlUKR8uNTgdWVRSVm6CzOjjpYQ+uD Axwj1rjBey6Aw== 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 , "Darrick J. Wong" Subject: [PATCH v8 09/17] xfs: Report case sensitivity in fileattr_get Date: Tue, 17 Feb 2026 16:47:33 -0500 Message-ID: <20260217214741.1928576-10-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 Upper layers such as NFSD need to query whether a filesystem is case-sensitive. Report case sensitivity via the FS_XFLAG_CASEFOLD flag in xfs_fileattr_get(). XFS always preserves case. XFS is case-sensitive by default, but supports ASCII case-insensitive lookups when formatted with the ASCIICI feature flag. Reviewed-by: "Darrick J. Wong" Signed-off-by: Chuck Lever --- fs/xfs/xfs_ioctl.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 369555275140..41c6b4cd8ac2 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -518,6 +518,13 @@ xfs_fileattr_get( xfs_fill_fsxattr(ip, XFS_DATA_FORK, fa); xfs_iunlock(ip, XFS_ILOCK_SHARED); + /* + * FS_XFLAG_CASEFOLD indicates case-insensitive lookups with + * case preservation. This matches ASCIICI behavior: lookups + * fold ASCII case while filenames remain stored verbatim. + */ + if (xfs_has_asciici(ip->i_mount)) + fa->fsx_xflags |= FS_XFLAG_CASEFOLD; return 0; } -- 2.53.0