{"id":2227313,"url":"http://patchwork.ozlabs.org/api/patches/2227313/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260423-case-sensitivity-v10-4-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-v10-4-c385d674a6cf@oracle.com>","list_archive_url":null,"date":"2026-04-23T13:12:07","name":"[v10,04/17] exfat: Implement fileattr_get for case sensitivity","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"182c062340144b96e420d67c10968151f93969f5","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-v10-4-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/2227313/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227313/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=D98UTL4V;\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=1776949952;\n\tbh=NB5dGHQsj3zLr3dcAIz13EIGulkS60j2QYCq86MIXR0=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=D98UTL4VZGvNig5IFBGeqogFyeD8yZuecZNbBLZmLJadhvvFCSQYIsk10SlU9f/Y+\n\t OilgzQOVVccEasG0B749UAOI7RhNxfCWBiNlrR3Hz+tnWKqeLhsRv+VXbjTZMlv/ux\n\t TX1CkvfY8ciWeI0Qci2N7cFt63GndPHClbVaWAz4QEC+t6Jkqd3eSqPW/4PVUVl2Fx\n\t TQPBgMbhg81ujDtUwg/Y3lMZTtBfQ58BrLkYX2SLN7xO59LyDLNW0V+GYMCfluVEjm\n\t AoNB3Vagugb48Hde7VHL6aox2TDS19bagoXJAkKaQXpaTRMnoEJEVn5zeIUfVFQQMQ\n\t A+jh8m7Qfzc7A==","From":"Chuck Lever ","Date":"Thu, 23 Apr 2026 09:12:07 -0400","Subject":"[PATCH v10 04/17] exfat: 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":"<20260423-case-sensitivity-v10-4-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=2709;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=q+8BbK8Itxc1BuNkeDUPYf4FrFMUGad4IdP0+8v/SOk=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6hqzDXUgGpeYrfk6G6fKlquI9oIt/yNQiAPuM\n X2KRQzy4biJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaeoaswAKCRAzarMzb2Z/\n l0FdD/4rKdHL/ffqgOqkeiFmk+BTAPJ0+Chaj3sOX5l8VwCV0SNp95QyLXh9+rpXnv2wE5X8+3e\n dydGtn83WRNrKipUisa/ujBAKndGTMd6I03NskMVMG3EluoBZ9Bg3vhL47Y0y2QmWMH4t+1xPaJ\n Pdxkw9dovPwZyAngsV2C3pl7GMipSHtuQW0KkA8Q+3iieTONjFt5C5G3LWC0IfqiuHDJNBASvw3\n VDObDcMAgnX24DsjyMeW6DfDtQetAwJpYpxUv8aQof8Y1BxYvKseIAKEpeDONS/RxDBtwJu34bm\n 37XQ4C5oYPgnQ4ody3mh/Okpu6GrX2yWFjsANQz0J9txcA7E+ulZSH5dujzGR9H16ZBwlt+1sjh\n 3JBD8AbVeMshHrMRzclMIAH5jwNbUqtWJbNmpcSpCXW9ebyz0NaDrs5hOxeK7RNVl3OVoe4Lli9\n Z8L8iHKcv1F39u6grow366tMzYrSRYtYavg/grLzGdXE/zpRGDRtrm919JTrdfMS3aENy07tb79\n BLKoF4i06AKLwsOoc/4NefbfwtSCNUodqIviMNFkRsxwvmwT4AcId+OKI5t7CuBDnQ+/T9UTGvm\n mR+lszn8Pi5P/7REpwVwAYmCryVi/OT1+cvO5PkYbluM92MZpZBcbrxin5fFbYceJm9fcStrq9f\n Mp2pR4AvdGvquGg==","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 exFAT's case sensitivity behavior via the FS_XFLAG_CASEFOLD\nflag. exFAT is always case-insensitive (using an upcase table for\ncomparison) and always preserves case at rest.\n\nAcked-by: Namjae Jeon \nSigned-off-by: Chuck Lever \n---\n fs/exfat/exfat_fs.h | 2 ++\n fs/exfat/file.c | 17 +++++++++++++++--\n fs/exfat/namei.c | 1 +\n 3 files changed, 18 insertions(+), 2 deletions(-)","diff":"diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h\nindex 89ef5368277f..aff4dcd4e75a 100644\n--- a/fs/exfat/exfat_fs.h\n+++ b/fs/exfat/exfat_fs.h\n@@ -496,6 +496,8 @@ int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry,\n int exfat_getattr(struct mnt_idmap *idmap, const struct path *path,\n \t\t struct kstat *stat, unsigned int request_mask,\n \t\t unsigned int query_flags);\n+struct file_kattr;\n+int exfat_fileattr_get(struct dentry *dentry, struct file_kattr *fa);\n int exfat_file_fsync(struct file *file, loff_t start, loff_t end, int datasync);\n long exfat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);\n long exfat_compat_ioctl(struct file *filp, unsigned int cmd,\ndiff --git a/fs/exfat/file.c b/fs/exfat/file.c\nindex 354bdcfe4abc..8af829ef54c4 100644\n--- a/fs/exfat/file.c\n+++ b/fs/exfat/file.c\n@@ -14,6 +14,7 @@\n #include \n #include \n #include \n+#include \n \n #include \"exfat_raw.h\"\n #include \"exfat_fs.h\"\n@@ -323,6 +324,17 @@ int exfat_getattr(struct mnt_idmap *idmap, const struct path *path,\n \treturn 0;\n }\n \n+int exfat_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n+{\n+\t/*\n+\t * exFAT compares filenames through an upcase table, so lookup\n+\t * is always case-insensitive. Long names are stored in UTF-16\n+\t * with case intact; CASENONPRESERVING stays clear.\n+\t */\n+\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n+\treturn 0;\n+}\n+\n int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry,\n \t\t struct iattr *attr)\n {\n@@ -817,6 +829,7 @@ const struct file_operations exfat_file_operations = {\n };\n \n const struct inode_operations exfat_file_inode_operations = {\n-\t.setattr = exfat_setattr,\n-\t.getattr = exfat_getattr,\n+\t.setattr\t= exfat_setattr,\n+\t.getattr\t= exfat_getattr,\n+\t.fileattr_get\t= exfat_fileattr_get,\n };\ndiff --git a/fs/exfat/namei.c b/fs/exfat/namei.c\nindex 2c5636634b4a..94002e43db08 100644\n--- a/fs/exfat/namei.c\n+++ b/fs/exfat/namei.c\n@@ -1311,4 +1311,5 @@ const struct inode_operations exfat_dir_inode_operations = {\n \t.rename\t\t= exfat_rename,\n \t.setattr\t= exfat_setattr,\n \t.getattr\t= exfat_getattr,\n+\t.fileattr_get\t= exfat_fileattr_get,\n };\n","prefixes":["v10","04/17"]}