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 CC26A33B6E3; Wed, 22 Apr 2026 23:30:38 +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=1776900638; cv=none; b=d62QAdlPHIYQrf4NcXMQyi0Pk138Dy3mYWV2gbPsJVLnK8greI7ujtgmQs2/KCxm4RlRlahOUi72OlB37WbZbNMHXJ5XEGO/TEQSAxPy702ShoKwjmVro2ZD2rfDyQog82cv7Ipf/RSjGkJUf8/qLrTZQaFtVXtrsJbuw6vkjFQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776900638; c=relaxed/simple; bh=4whuDT2NAsASpb7E7T4HhtgZB89kNBSY63z1QOF+oEY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=pBnR1XvABcmLBn2KsxSMYbrB9tkQonRH4jUD9uwe+ku2r7dpFWY7TKRzNl+T5t/71sVnMRVeQc0Y6VT6YtiBN4xTj/2LCPux2cuKMeqkUIhrCnDQzFarOtZ3QrenwHJNJPltBa3BeC6fv/z3XeJUud3zx9CeLtnF1mR9bHZZWoE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bnaHnaYi; 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="bnaHnaYi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B45EC19425; Wed, 22 Apr 2026 23:30:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776900638; bh=4whuDT2NAsASpb7E7T4HhtgZB89kNBSY63z1QOF+oEY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=bnaHnaYi6wS+dpu4hSGk2aKp6qWM+jKNpuqCfpZRt7jst7HBdWHgzDl7X+21Z/6uf cto4ohY7BMSTPGHMk2cc3hVzoceQb0zbLF3JaCb1Sb0ndNJYFttAe0Q8eKVRidzVuh CZtKE0NvGuVe87n5/qDmH0l2r+LHLSX3OkdmM3LnrkUsaLwtINnpDvxocW1PF5ERI4 aDGy/w75tRNo9KeRxkTCQq1p4MehJ9Qat1kR9j5gQ7RFVwlRK3npGvkl00FSwlq/Eq 85ZHETH2V6C+Zi2OY/436EF/x+rlQ4RsrZ60NCkp3vxAH6MsmS7q7/qT105SEPEWsR 3jULWrtGjAI5Q== From: Chuck Lever Date: Wed, 22 Apr 2026 19:30:03 -0400 Subject: [PATCH v9 09/17] xfs: Report case sensitivity in fileattr_get Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260422-case-sensitivity-v9-9-be023cc070e2@oracle.com> References: <20260422-case-sensitivity-v9-0-be023cc070e2@oracle.com> In-Reply-To: <20260422-case-sensitivity-v9-0-be023cc070e2@oracle.com> 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" X-Mailer: b4 0.16-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1083; i=chuck.lever@oracle.com; h=from:subject:message-id; bh=DjIMkqqMWUIzhkQeoXVo4WlkiMfqV3S6x//RMb6YZuo=; b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6VoFgb8ribB+nCo/33ADy8UGh/WTW9EVvYLDJ ZhkLdMmkQKJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaelaBQAKCRAzarMzb2Z/ l/25D/9aqXIUuRxOQWtD0dWT+Q9W3mQd7Y+VY6UFS1LAtmd1vn5g34iB5NU7sM2wxTgYLOK+5/h vwoPHpOVaqxvhA6GsenrcETy2xMwbv4PRm6tnvS/4sMYQB6c0PKf9dHVao8x51/6EAQjfhUPPMY 414gODPEKknMS6bazcGhAiXDJYerPC6pDphIuSsR/PWJWUnOXaDDrBXVgRWxPFfcpdmLmPix+IB FtSX59MZOv1IxHSU5cHLjIjSobLGSVYwk7xbu57GH5tp8TQSXvXds7I6J2Lr0gjvdVNbnUbo3Q6 4xTbfvX28p3m4mKCt3F46liurf+8mcdIkheGpzRFgTcFsq7gwsXX7qR4WAHTD/tM0XN/SXBIubE f5ewBjam/sAh+aN3Tr/w2Bt8HXMJOxeUt5W1UL55JgDCLAyaqXP3qDI5VcnfV7wEJe2hh1lqKI3 S9a2Al02PjUj5s9ZqlbrleD7oOAd1aApbGRdkd3p/o7v6kI0qUlEfVi4IiQMxfCAZxZ+F92nJ/5 xZtIFCiKxhvUK+GgddMEDsV37U7T7xpubEwcJ1othGDQmliP89lZI2sfdliv3YjargSsSanVWXC 37e5iAy9sqxBdaj5HqhnLjaiOWTjRBt+/CeMx7uAaav5VUyva44vS/JPXv14RdHDgctXgOF/nAG xFtrEcKzj1PPhlw== X-Developer-Key: i=chuck.lever@oracle.com; a=openpgp; fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97 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 ed9b4846c05f..b3c46a7ece62 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -537,6 +537,13 @@ 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