{"id":2226998,"url":"http://patchwork.ozlabs.org/api/patches/2226998/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260422-case-sensitivity-v9-9-be023cc070e2@oracle.com/","project":{"id":8,"url":"http://patchwork.ozlabs.org/api/projects/8/?format=json","name":"Linux ext4 filesystem development","link_name":"linux-ext4","list_id":"linux-ext4.vger.kernel.org","list_email":"linux-ext4@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260422-case-sensitivity-v9-9-be023cc070e2@oracle.com>","list_archive_url":null,"date":"2026-04-22T23:30:03","name":"[v9,09/17] xfs: Report case sensitivity in fileattr_get","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"476a48ed87cbb53e9dcb58189d793b550a814c89","submitter":{"id":86689,"url":"http://patchwork.ozlabs.org/api/people/86689/?format=json","name":"Chuck Lever","email":"cel@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260422-case-sensitivity-v9-9-be023cc070e2@oracle.com/mbox/","series":[{"id":501129,"url":"http://patchwork.ozlabs.org/api/series/501129/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=501129","date":"2026-04-22T23:29:54","name":"Exposing case folding behavior","version":9,"mbox":"http://patchwork.ozlabs.org/series/501129/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2226998/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2226998/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-ext4@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=bnaHnaYi;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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arc=none smtp.client-ip=10.30.226.201"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1776900638;\n\tbh=4whuDT2NAsASpb7E7T4HhtgZB89kNBSY63z1QOF+oEY=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=bnaHnaYi6wS+dpu4hSGk2aKp6qWM+jKNpuqCfpZRt7jst7HBdWHgzDl7X+21Z/6uf\n\t cto4ohY7BMSTPGHMk2cc3hVzoceQb0zbLF3JaCb1Sb0ndNJYFttAe0Q8eKVRidzVuh\n\t CZtKE0NvGuVe87n5/qDmH0l2r+LHLSX3OkdmM3LnrkUsaLwtINnpDvxocW1PF5ERI4\n\t aDGy/w75tRNo9KeRxkTCQq1p4MehJ9Qat1kR9j5gQ7RFVwlRK3npGvkl00FSwlq/Eq\n\t 85ZHETH2V6C+Zi2OY/436EF/x+rlQ4RsrZ60NCkp3vxAH6MsmS7q7/qT105SEPEWsR\n\t 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-ext4@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 ,\n Christian Brauner , Jan Kara ","Cc":"linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,\n linux-xfs@vger.kernel.org, linux-cifs@vger.kernel.org,\n linux-nfs@vger.kernel.org, linux-api@vger.kernel.org,\n linux-f2fs-devel@lists.sourceforge.net, hirofumi@mail.parknet.co.jp,\n linkinjeon@kernel.org, sj1557.seo@samsung.com, yuezhang.mo@sony.com,\n almaz.alexandrovich@paragon-software.com, slava@dubeyko.com,\n glaubitz@physik.fu-berlin.de, frank.li@vivo.com, tytso@mit.edu,\n adilger.kernel@dilger.ca, cem@kernel.org, sfrench@samba.org,\n pc@manguebit.org, ronniesahlberg@gmail.com, sprasad@microsoft.com,\n trondmy@kernel.org, anna@kernel.org, jaegeuk@kernel.org, chao@kernel.org,\n hansg@kernel.org, senozhatsky@chromium.org,\n Chuck Lever , \"Darrick J. Wong\" ","X-Mailer":"b4 0.16-dev","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1083;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=DjIMkqqMWUIzhkQeoXVo4WlkiMfqV3S6x//RMb6YZuo=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6VoFgb8ribB+nCo/33ADy8UGh/WTW9EVvYLDJ\n ZhkLdMmkQKJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaelaBQAKCRAzarMzb2Z/\n l/25D/9aqXIUuRxOQWtD0dWT+Q9W3mQd7Y+VY6UFS1LAtmd1vn5g34iB5NU7sM2wxTgYLOK+5/h\n vwoPHpOVaqxvhA6GsenrcETy2xMwbv4PRm6tnvS/4sMYQB6c0PKf9dHVao8x51/6EAQjfhUPPMY\n 414gODPEKknMS6bazcGhAiXDJYerPC6pDphIuSsR/PWJWUnOXaDDrBXVgRWxPFfcpdmLmPix+IB\n FtSX59MZOv1IxHSU5cHLjIjSobLGSVYwk7xbu57GH5tp8TQSXvXds7I6J2Lr0gjvdVNbnUbo3Q6\n 4xTbfvX28p3m4mKCt3F46liurf+8mcdIkheGpzRFgTcFsq7gwsXX7qR4WAHTD/tM0XN/SXBIubE\n f5ewBjam/sAh+aN3Tr/w2Bt8HXMJOxeUt5W1UL55JgDCLAyaqXP3qDI5VcnfV7wEJe2hh1lqKI3\n S9a2Al02PjUj5s9ZqlbrleD7oOAd1aApbGRdkd3p/o7v6kI0qUlEfVi4IiQMxfCAZxZ+F92nJ/5\n xZtIFCiKxhvUK+GgddMEDsV37U7T7xpubEwcJ1othGDQmliP89lZI2sfdliv3YjargSsSanVWXC\n 37e5iAy9sqxBdaj5HqhnLjaiOWTjRBt+/CeMx7uAaav5VUyva44vS/JPXv14RdHDgctXgOF/nAG\n xFtrEcKzj1PPhlw==","X-Developer-Key":"i=chuck.lever@oracle.com; a=openpgp;\n fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97","X-Spam-Status":"No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org"},"content":"From: Chuck Lever \n\nUpper layers such as NFSD need to query whether a filesystem is\ncase-sensitive. Report case sensitivity via the FS_XFLAG_CASEFOLD\nflag in xfs_fileattr_get(). XFS always preserves case. XFS is\ncase-sensitive by default, but supports ASCII case-insensitive\nlookups when formatted with the ASCIICI feature flag.\n\nReviewed-by: \"Darrick J. Wong\" \nSigned-off-by: Chuck Lever \n---\n fs/xfs/xfs_ioctl.c | 7 +++++++\n 1 file changed, 7 insertions(+)","diff":"diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c\nindex ed9b4846c05f..b3c46a7ece62 100644\n--- a/fs/xfs/xfs_ioctl.c\n+++ b/fs/xfs/xfs_ioctl.c\n@@ -537,6 +537,13 @@ xfs_fileattr_get(\n \txfs_fill_fsxattr(ip, XFS_DATA_FORK, fa);\n \txfs_iunlock(ip, XFS_ILOCK_SHARED);\n \n+\t/*\n+\t * FS_XFLAG_CASEFOLD indicates case-insensitive lookups with\n+\t * case preservation. This matches ASCIICI behavior: lookups\n+\t * fold ASCII case while filenames remain stored verbatim.\n+\t */\n+\tif (xfs_has_asciici(ip->i_mount))\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n \treturn 0;\n }\n \n","prefixes":["v9","09/17"]}