{"id":2228060,"url":"http://patchwork.ozlabs.org/api/patches/2228060/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260424-case-sensitivity-v11-6-de5619beddaf@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":"<20260424-case-sensitivity-v11-6-de5619beddaf@oracle.com>","list_archive_url":null,"date":"2026-04-25T01:53:08","name":"[v11,06/15] hfs: Implement fileattr_get for case sensitivity","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"8074446b4f4a470bc60c70bd0615bef356af1ace","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/20260424-case-sensitivity-v11-6-de5619beddaf@oracle.com/mbox/","series":[{"id":501417,"url":"http://patchwork.ozlabs.org/api/series/501417/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=501417","date":"2026-04-25T01:53:02","name":"Exposing case folding behavior","version":11,"mbox":"http://patchwork.ozlabs.org/series/501417/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228060/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228060/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=Po14uAd4;\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=1777082018;\n\tbh=+3MOBq8tIY5WA12oHUqvFyZTiNAU0Ok39mLnTTLF1eI=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=Po14uAd4s/wiiENSvxbh+ps2GZOcn/8LhI0uo4tb1F4Pe3jqlx+2rGjY1hGUSWOmJ\n\t DPnsHHME/4WGwBd2AWpQmGB063a9s25WRVbMLfW+6/XmJRQOGBiSBMUEl1L4lSzV0j\n\t kTHw5XTJYEeqJcundSzxcUDO6euEsfj35Gz/rlRueNylTA36W/XJC6YiU/RgQaty+n\n\t UEzjGbP93WLA6hM3AzX3YUfFqFB2hWEaCYznHp2KnDHX62j1M/sJpydqBOX0sbrc0m\n\t FSgFTthTkId9NpWICQmBNL5QoSGRONAJXoegF8JzRdc2aYNDiue8IKl67PiKXWdfNA\n\t Kouv+YBvFje9g==","From":"Chuck Lever ","Date":"Fri, 24 Apr 2026 21:53:08 -0400","Subject":"[PATCH v11 06/15] hfs: Implement fileattr_get for case sensitivity","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":"<20260424-case-sensitivity-v11-6-de5619beddaf@oracle.com>","References":"<20260424-case-sensitivity-v11-0-de5619beddaf@oracle.com>","In-Reply-To":"<20260424-case-sensitivity-v11-0-de5619beddaf@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 ,\n Roland Mainz ","X-Mailer":"b4 0.16-dev","X-Developer-Signature":"v=1; a=openpgp-sha256; l=2557;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=2Xqe+DnVGNfulHUCzpURt2jTiqbh233GQupN+nsg0Mc=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp7B6QMaG3Vj/9N1di+0c7HAL3Lo5gwGKNaaWO+\n rt91mDJ1IqJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaewekAAKCRAzarMzb2Z/\n l9dBEAC5tzt5UR880pQ3sCv1p0X3cyCLrZZ2G/QXN02XqQKpa93iydTN/5iY8vQ9apd8r6rm+mg\n D08EAC9Kbbvo5Ma6t90VVZVrl+oBwdHieHQ85zvzTOzxyILwi7RJuAbaQxrcUYoIRZ20jBznin0\n fSTd6M60x84fBQSFqRl9mgPcSaWAkQZDI+u59MvgO2x0Hk1hqDF4OsvOEiIfmBzdcmIlud9+onQ\n +pKfJQJ5QG6vVY4Zg+xi55R6enUwejsgok7WFDGebeq8hvuiaXiNmWL6eohIeR13AB4pOPCSw2O\n WU08njma4sjoREgYj1pxih5wDf9AxJ8TWsfimlWVi597g2CIzqOUY2gv9ZJRSnflT+8y+hYh0NS\n rjAGKJ1mQlQ48hgi0bHjMi7eNcbFd5oiasHr89sWMpdAXO8m9Bm8PnktWTG90mCD4WovUdnvwS/\n B+WGQO5lufWVI30eEkxvW7TVm/kOeB9LsFEz8XFBQQ1Z2C9rUpizVNv8AzdyT6q/uObpWEar6mJ\n Pw58Fe5T8Xee7hQjMXOZEujz8LkRoF0PSGmBt04YtWHp8TLtegR5+0apPi7/keXaR3VsGN1IpjE\n /FQXKk6yrZCFepDs6sc4ZaUs73iPXtCgtUqIwDoXy8TMFXSZdkiTb0Vk3RTKYXQ9FXVYh/3py3I\n lq7UvruzGb8GVIw==","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\nReport HFS case sensitivity behavior via the FS_XFLAG_CASEFOLD\nflag. HFS is always case-insensitive (using Mac OS Roman case\nfolding) and always preserves case at rest.\n\nReviewed-by: Viacheslav Dubeyko \nReviewed-by: Roland Mainz \nSigned-off-by: Chuck Lever \n---\n fs/hfs/dir.c | 1 +\n fs/hfs/hfs_fs.h | 2 ++\n fs/hfs/inode.c | 14 ++++++++++++++\n 3 files changed, 17 insertions(+)","diff":"diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c\nindex f5e7efe924e7..c4c6e1623f55 100644\n--- a/fs/hfs/dir.c\n+++ b/fs/hfs/dir.c\n@@ -328,4 +328,5 @@ const struct inode_operations hfs_dir_inode_operations = {\n \t.rmdir\t\t= hfs_remove,\n \t.rename\t\t= hfs_rename,\n \t.setattr\t= hfs_inode_setattr,\n+\t.fileattr_get\t= hfs_fileattr_get,\n };\ndiff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h\nindex ac0e83f77a0f..1b23448c9a48 100644\n--- a/fs/hfs/hfs_fs.h\n+++ b/fs/hfs/hfs_fs.h\n@@ -177,6 +177,8 @@ extern int hfs_get_block(struct inode *inode, sector_t block,\n extern const struct address_space_operations hfs_aops;\n extern const struct address_space_operations hfs_btree_aops;\n \n+struct file_kattr;\n+int hfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa);\n int hfs_write_begin(const struct kiocb *iocb, struct address_space *mapping,\n \t\t loff_t pos, unsigned int len, struct folio **foliop,\n \t\t void **fsdata);\ndiff --git a/fs/hfs/inode.c b/fs/hfs/inode.c\nindex 89b33a9d46d5..f41cc261684d 100644\n--- a/fs/hfs/inode.c\n+++ b/fs/hfs/inode.c\n@@ -18,6 +18,7 @@\n #include \n #include \n #include \n+#include \n \n #include \"hfs_fs.h\"\n #include \"btree.h\"\n@@ -699,6 +700,18 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end,\n \treturn ret;\n }\n \n+int hfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n+{\n+\t/*\n+\t * HFS compares filenames using Mac OS Roman case folding, so\n+\t * lookup is always case-insensitive. Names are stored on disk\n+\t * with case intact; CASENONPRESERVING stays clear.\n+\t */\n+\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n+\tfa->flags |= FS_CASEFOLD_FL;\n+\treturn 0;\n+}\n+\n static const struct file_operations hfs_file_operations = {\n \t.llseek\t\t= generic_file_llseek,\n \t.read_iter\t= generic_file_read_iter,\n@@ -715,4 +728,5 @@ static const struct inode_operations hfs_file_inode_operations = {\n \t.lookup\t\t= hfs_file_lookup,\n \t.setattr\t= hfs_inode_setattr,\n \t.listxattr\t= generic_listxattr,\n+\t.fileattr_get\t= hfs_fileattr_get,\n };\n","prefixes":["v11","06/15"]}