{"id":2227316,"url":"http://patchwork.ozlabs.org/api/patches/2227316/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260423-case-sensitivity-v10-8-c385d674a6cf@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":"<20260423-case-sensitivity-v10-8-c385d674a6cf@oracle.com>","list_archive_url":null,"date":"2026-04-23T13:12:11","name":"[v10,08/17] ext4: Report case sensitivity in fileattr_get","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"e034fdb7686fe449b4ddec76918d44c1b3d251df","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/20260423-case-sensitivity-v10-8-c385d674a6cf@oracle.com/mbox/","series":[{"id":501194,"url":"http://patchwork.ozlabs.org/api/series/501194/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=501194","date":"2026-04-23T13:12:04","name":"Exposing case folding behavior","version":10,"mbox":"http://patchwork.ozlabs.org/series/501194/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227316/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227316/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=XC3zMZ8G;\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=1776949962;\n\tbh=jXYqYekRjpF07wlPDKgx2XWDNqQtTHKbLiod79qFffg=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=XC3zMZ8GXEPAPGuVPkpcEGJW/IWUfO9lT5X+da8jeEzG30DrtLhAa90rUVt9Gnx3h\n\t Yh7AnsqQoxVGIIhqTnnZbWpcjwN3ItAVSTFp8tiMrIJUWfD4R9OStiy0ZNAyId4XMw\n\t d2Z2L5hccCmf7zAV3nqUUdvoQprKmbcKdlOAgW40hdZuQX5OaPfH+A6rab0OZGvDox\n\t aDv0P/ZQd9E8C+/Pwl8FA05S6P2NtFlWHsLB8dFv7bB7fMTkseIbph+4Tjrtxq6euV\n\t wCsCmNbnex9K3PvwvS3S8q9VkGxuvMVnUOLmsezHOVvd1EDzUUpalew7yOLN8BACBt\n\t IegZt8Hz3IuLA==","From":"Chuck Lever ","Date":"Thu, 23 Apr 2026 09:12:11 -0400","Subject":"[PATCH v10 08/17] ext4: 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":"<20260423-case-sensitivity-v10-8-c385d674a6cf@oracle.com>","References":"<20260423-case-sensitivity-v10-0-c385d674a6cf@oracle.com>","In-Reply-To":"<20260423-case-sensitivity-v10-0-c385d674a6cf@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=1149;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=TxMd9+19zfe1kcd7z7IWDwky99GfiXSk/tT0Rl2ZM5c=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6hq01cfRhNAJt0xx2EbnMwGvHTygaBYN6aRTE\n GINZfCUwkSJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaeoatAAKCRAzarMzb2Z/\n l+4aD/9AIIDkYsuxGwkaHb0alyjM31f5P4xoH9QnzDFp8NL/UVKvxCdSvFeMeyBHwVa7Fy9ruea\n zMwrMXaFVq2XZWeNySOA0xiFd4HT0xd854+HjYrlIEdnnKtj5zrn3FrAvE3n7mSq5YxhGF9pwhw\n 5RavDMmtW/5nOr3HYz1Gp7xrk3hPZOJ2uPXpSOVw9GMxNiotmNg0ZDwjDxSEMkM7+ScHLDGzMFR\n wLhw5l9Rs0mhNYWejSb2IQhDijmYO1Ym35ZiJjNu5ft4ChBGAuoxGL0m5/f8650C7D2PP+Uet9i\n r4Q+ALt7QWYX3HAPWpT2pMx8cFGUD25yODaeNdLKH5AiBlu8KtHiArKHxGo6nIDcxzr5RYhvmYp\n w5CIQChTJ12zqUt2vNfuYzcuNFQxah0Oy3lAmGkW7ZL+juq6mxvkPTy8PJDQvH8wLKBlWDHCpul\n 7a2TrzylW2pvpGiW96qRr6ZMwLsQLoWdZl+m5tbuBxniV9qHk/2Qw6yE/bwTx0MySJpVkZZgnZ4\n ty+BBTmKui8m5aOah8Uf621+mouo4Ve7WFdy1i4zWhVUDQgbHt5cn182HB0L7hN8xQrYTHqTyM2\n OKrOHQ/XIP5hQ1O6r2WRIOscUUUEfDJNxwOPDa/Lunw+phN71xW9DR540IhKBRXhREigJfqA7wH\n jFNwOPn3bVc/EfQ==","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 ext4's case sensitivity behavior via the FS_XFLAG_CASEFOLD\nflag. ext4 always preserves case at rest.\n\nCase sensitivity is a per-directory setting in ext4. If the queried\ninode is a casefolded directory, report case-insensitive; otherwise\nreport case-sensitive (standard POSIX behavior).\n\nReviewed-by: Jan Kara \nAcked-by: Theodore Ts'o \nSigned-off-by: Chuck Lever \n---\n fs/ext4/ioctl.c | 7 +++++++\n 1 file changed, 7 insertions(+)","diff":"diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c\nindex 1d0c3d4bdf47..d1d597a13eeb 100644\n--- a/fs/ext4/ioctl.c\n+++ b/fs/ext4/ioctl.c\n@@ -999,6 +999,13 @@ int ext4_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n \tif (ext4_has_feature_project(inode->i_sb))\n \t\tfa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid);\n \n+\t/*\n+\t * Case folding is a directory attribute in ext4. Set FS_XFLAG_CASEFOLD\n+\t * for directories with the casefold attribute; all other inodes use\n+\t * standard case-sensitive semantics.\n+\t */\n+\tif (IS_CASEFOLDED(inode))\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n \treturn 0;\n }\n \n","prefixes":["v10","08/17"]}