{"id":2226992,"url":"http://patchwork.ozlabs.org/api/patches/2226992/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260422-case-sensitivity-v9-14-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-v9-14-be023cc070e2@oracle.com>","list_archive_url":null,"date":"2026-04-22T23:30:08","name":"[v9,14/17] isofs: Implement fileattr_get for case sensitivity","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"43748baeaa95ac3a834a431ab0eb30e4765ad8ef","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-v9-14-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/2226992/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2226992/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=iRNQhzJY;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; 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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=1776900650;\n\tbh=01dn7VPhZ7IaECyyXD1nCwqLHm0UbGEoyqWSLe5m9tM=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=iRNQhzJYPp4pw6bkhzG2kUISBPMGKc4r5mJxYotWGT5thxubI08DIk5qa70n7X0nY\n\t CYDqijAUz5SXcuIjTHS/w/olMp10tbWDVokPkI/h5WY6sSOdeTfVFcboNB+vfKVAym\n\t YxGHw6Alx3nlv0kxzSbcU4rCHOQ3nADshR94hgCa5jfYK8hRc0q8Ja9poCWP5pdMpS\n\t C4dSDm2n7dxqztAzBn7yRDS2HXwHfxLHIxZisqeRvVD8vgrtZ17cSubMtJoPWWP6E+\n\t fo3YKqNJbjvjW5UPFIpZEsevm9BIHx2PHGVF8MRP8XmtQ5EL8VQTP8ciJ7RKvX6+rT\n\t PXQWv8V7CXURg==","From":"Chuck Lever ","Date":"Wed, 22 Apr 2026 19:30:08 -0400","Subject":"[PATCH v9 14/17] isofs: Implement fileattr_get for case\n 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":"<20260422-case-sensitivity-v9-14-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 ","X-Mailer":"b4 0.16-dev","X-Developer-Signature":"v=1; a=openpgp-sha256; l=2116;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=kh4Mo9qHXj56Vn2bJA48n97L5gwCBfFYkAAOr9+sl3U=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6VoGZQsJtBMnjFwQhTw/zhXJZoWoDCubwoAGM\n lTtdNYJPkOJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaelaBgAKCRAzarMzb2Z/\n lxzWD/0bbswcNfCXfd/LYYdUB74Xza+PwZJwxaDAGntT1IS5sExaDkbfrHAXTmF1nkPwamWJkbO\n yl9Q0T592fxKKKziwcQvsXlvCcuqmSXq6XVE3rhiZdqde9rLCu48w0654vAQk0wyMtYlGE0Z/jU\n XWpIKL409vVghaZOhdSGZbYaFiEFhX7rKxVSOJ/6I4U3WP0akIFTxpDGURYrsU4HgDInaRjKRgq\n csMnwabRNaJhLZ8z5t62oFNX2DeInB4XJ0MvpZpJI0dvjGujXHnMremOVktTDPE798M00/+Mxmf\n cSfTNnT1Jhm0clTMM6Kcyax+oQOhHkWO2Ck1RbUpNzha03TLchUEIl9RpBgyktRfNsV1fwmWr8V\n apCOmV+A7w7GwTL0i5FEglWpJpuMDfrIHImr5j/Z+9tG1FRGMh8vbQjJNymcdE9OWdBGTJ6hbzS\n 4mysifqeP/8YprQhTzY4MFfF2Jh3seJHly1XIgVRUXjfn4Je0NB5NP6nBYql+cvQhy73sW4iTF4\n W7N8EM+w3ptzQJ8AnExQubTxWEw+DKgS5fT0tAs83RxqViFUo+Dj8v6e5ZL0eJVQvXIv6uEaUBr\n MtiNr1hGDgdGOQcuAZBEtAOPrHvLRuVq4tRQwB6lqNRiyPrRdpFAjX6U9v3PgpRubE4yiRfqDNd\n vcMxASGa88CRasA==","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 a way to query whether a\nfilesystem handles filenames in a case-sensitive manner so\nthey can provide correct semantics to remote clients. Without\nthis information, NFS exports of ISO 9660 filesystems cannot\nadvertise their filename case behavior.\n\nImplement isofs_fileattr_get() to report ISO 9660 case handling\nbehavior via the FS_XFLAG_CASEFOLD flag. The 'check=r' (relaxed)\nmount option enables case-insensitive lookups, and this setting\ndetermines the value reported. By default, Joliet extensions\noperate in relaxed mode while plain ISO 9660 uses strict\n(case-sensitive) mode. All ISO 9660 variants are case-preserving,\nmeaning filenames are stored exactly as they appear on the disc.\n\nThe callback is registered only on isofs_dir_inode_operations\nbecause isofs has no custom inode_operations for regular\nfiles, and symlinks use the generic page_symlink_inode_operations.\n\nReviewed-by: Jan Kara \nSigned-off-by: Chuck Lever \n---\n fs/isofs/dir.c | 11 +++++++++++\n 1 file changed, 11 insertions(+)","diff":"diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c\nindex 2fd9948d606e..bca3de5a235d 100644\n--- a/fs/isofs/dir.c\n+++ b/fs/isofs/dir.c\n@@ -14,6 +14,7 @@\n #include \n #include \n #include \"isofs.h\"\n+#include \n \n int isofs_name_translate(struct iso_directory_record *de, char *new, struct inode *inode)\n {\n@@ -267,6 +268,15 @@ static int isofs_readdir(struct file *file, struct dir_context *ctx)\n \treturn result;\n }\n \n+static int isofs_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n+{\n+\tstruct isofs_sb_info *sbi = ISOFS_SB(dentry->d_sb);\n+\n+\tif (sbi->s_check == 'r')\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n+\treturn 0;\n+}\n+\n const struct file_operations isofs_dir_operations =\n {\n \t.llseek = generic_file_llseek,\n@@ -281,6 +291,7 @@ const struct file_operations isofs_dir_operations =\n const struct inode_operations isofs_dir_inode_operations =\n {\n \t.lookup = isofs_lookup,\n+\t.fileattr_get = isofs_fileattr_get,\n };\n \n \n","prefixes":["v9","14/17"]}