{"id":2197439,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2197439/?format=json","project":{"id":12,"url":"http://patchwork.ozlabs.org/api/1.0/projects/12/?format=json","name":"Linux CIFS Client","link_name":"linux-cifs-client","list_id":"linux-cifs.vger.kernel.org","list_email":"linux-cifs@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260217214741.1928576-10-cel@kernel.org>","date":"2026-02-17T21:47:33","name":"[v8,09/17] xfs: Report case sensitivity in fileattr_get","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"476a48ed87cbb53e9dcb58189d793b550a814c89","submitter":{"id":86689,"url":"http://patchwork.ozlabs.org/api/1.0/people/86689/?format=json","name":"Chuck Lever","email":"cel@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260217214741.1928576-10-cel@kernel.org/mbox/","series":[{"id":492484,"url":"http://patchwork.ozlabs.org/api/1.0/series/492484/?format=json","date":"2026-02-17T21:47:24","name":"Subject: Exposing case folding behavior","version":8,"mbox":"http://patchwork.ozlabs.org/series/492484/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2197439/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.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=S/Ai+S96;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1771364889; cv=none;\n b=qsYUazmHaX4rTs3WeefUmX3miNRNLSKQtoCwvaPFWCwCqDY1awViPPyMuVTdqTbV6pPsZ/xUyY4TQg7xCDX9GwM0mkwqaRR1ZuQVFl0zUT8rqLi68oq7zr6lEKJK2nLt2kVI6dw4NNlv9ZEmnEJVwxINk61tw0jXUtRad5o+ckI=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1771364889; c=relaxed/simple;\n\tbh=fYGZPGOvWWHJ29HyCpYpZWY5Spu1N7gwM+/38CEuEEk=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=a6By33NpL3LSSSUCU4RhdNkLGweIHYpG6lMZeynACxdcv6XAXtT3tRspX98Q5m+RWLchm/KQhOmEB1MgY8niF3+R6zEfcX7m/SDqWXuMQs1ceXYPI1uELpEDYkcDZFH2xmzfgPl0gkJTrl6zcyUOnG/xvUwwUBq2TLE71Uoc0fY=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=S/Ai+S96; 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=1771364888;\n\tbh=fYGZPGOvWWHJ29HyCpYpZWY5Spu1N7gwM+/38CEuEEk=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=S/Ai+S96uG/Gfz7HATywK5Hdnt8vlyZtWhDrlsWq4+HHhqloU2FqnQCAUunQ+j2+S\n\t CDkoGtknNKSJ9d7s0NeTIWe1e52obwCxwbH7zpZ+yKOspWldxxhnElIJDNkXxvKWov\n\t XYuXCW1yVlmz2jI2JL0FOF6EYG4ieCR7GpxwWJU+XbE5n6tQvUEibFHmHgxySgNUPT\n\t HkjR5pf3qNY/RNRescro07eKCGuHm2wqmybZ2Mz2dDVIFTfZ4dhIP5PU4aVMzh/+xu\n\t W1azjC78aQfLp7Dp57Alvp0WlZ7Pk5Pp7qQx8VlUKR8uNTgdWVRSVm6CzOjjpYQ+uD\n\t Axwj1rjBey6Aw==","From":"Chuck Lever ","To":"Al Viro ,\n\tChristian Brauner ,\n\tJan Kara ","Cc":"linux-fsdevel@vger.kernel.org,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-xfs@vger.kernel.org,\n\tlinux-cifs@vger.kernel.org,\n\tlinux-nfs@vger.kernel.org,\n\tlinux-api@vger.kernel.org,\n\tlinux-f2fs-devel@lists.sourceforge.net,\n\thirofumi@mail.parknet.co.jp,\n\tlinkinjeon@kernel.org,\n\tsj1557.seo@samsung.com,\n\tyuezhang.mo@sony.com,\n\talmaz.alexandrovich@paragon-software.com,\n\tslava@dubeyko.com,\n\tglaubitz@physik.fu-berlin.de,\n\tfrank.li@vivo.com,\n\ttytso@mit.edu,\n\tadilger.kernel@dilger.ca,\n\tcem@kernel.org,\n\tsfrench@samba.org,\n\tpc@manguebit.org,\n\tronniesahlberg@gmail.com,\n\tsprasad@microsoft.com,\n\ttrondmy@kernel.org,\n\tanna@kernel.org,\n\tjaegeuk@kernel.org,\n\tchao@kernel.org,\n\thansg@kernel.org,\n\tsenozhatsky@chromium.org,\n\tChuck Lever ,\n\t\"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-cifs@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"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 369555275140..41c6b4cd8ac2 100644\n--- a/fs/xfs/xfs_ioctl.c\n+++ b/fs/xfs/xfs_ioctl.c\n@@ -518,6 +518,13 @@ 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":["v8","09/17"]}