From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7B212311971; Thu, 11 Dec 2025 15:21:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765466515; cv=none; b=DrH0bd/1d/9Pi0TE0bQ7M8xOi2nWw2vkAf/B4rpHmAXg4VJkPUmbU7sskN9sioYykV54PFYSM3geeRcOjVTcFQPvmBWPR+/AwwRieSBLoORPFYkoiiu5ibCfm7Ya63HjAgAeS1ilrxl8pQ78Cmib2G8pn10r7rFKox4aLY9wUyM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765466515; c=relaxed/simple; bh=8krsME7lzQGAnvbq2w/PdMk4UoQLtKDmlNA0rgLt2ug=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Z0MyHzHvYCW50t0vikVYIzQcIB+xRJlhFZlPLeCOgIU6Ds2Mspspi6Le0+yY7Q5P5PUNa0Rdl2JpKkLW+waRbSmvShIsxDjjMmoBCyaBJ8h5X07ywhop2j4KNX9smomQVwRfkgmpPWm8YOsfKdyu3e17adfkMoQtGujnMRLLEkk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DA8LBLVP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DA8LBLVP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BBC5C16AAE; Thu, 11 Dec 2025 15:21:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765466515; bh=8krsME7lzQGAnvbq2w/PdMk4UoQLtKDmlNA0rgLt2ug=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DA8LBLVPJBxAMJgmBwZ24pOvlFMXsf9ZuUhctBhmcHrThXFqDKeLZb63VjW/wrreo UOLE0u/W4tAkYOcaiVaAsUYa11vbnHIEOOTchJb6aQzAd2WdqKPQdx1zqSnJYm3ZUb eYsKHcAFBTn55u0takpkaA92Wkymv7TQfQSmK03wdPIMN+H3oUvfhCPWritacyRsO+ ws0VZabcmbQlGsg+bslT2f7OqrOmMDH2p3n510z9JW+DPIbCEeelzZo5gdPgcQOCLB IGqP+Zb0/0Dq1KwfgF0YCQymRsVRczjj/8UATnrnIIpC89Ld7q/UF0Uisy7TymBOiq yth3/87uuaFCw== From: Chuck Lever To: Al Viro , Christian Brauner Cc: , linux-ext4@vger.kernel.org, , , hirofumi@mail.parknet.co.jp, almaz.alexandrovich@paragon-software.com, tytso@mit.edu, adilger.kernel@dilger.ca, Volker.Lendecke@sernet.de, Chuck Lever Subject: [PATCH v2 3/6] ntfs3: Implement fileattr_get for case sensitivity Date: Thu, 11 Dec 2025 10:21:13 -0500 Message-ID: <20251211152116.480799-4-cel@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251211152116.480799-1-cel@kernel.org> References: <20251211152116.480799-1-cel@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Chuck Lever Report NTFS case sensitivity behavior via the new file_kattr case_info field. NTFS always preserves case at rest. Case sensitivity depends on mount options: with "nocase", NTFS performs Unicode case-insensitive matching; otherwise it is case-sensitive. Signed-off-by: Chuck Lever --- fs/ntfs3/file.c | 27 +++++++++++++++++++++++++++ fs/ntfs3/inode.c | 1 + fs/ntfs3/namei.c | 2 ++ fs/ntfs3/ntfs_fs.h | 1 + 4 files changed, 31 insertions(+) diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index 4c90ec2fa2ea..35892988b788 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -104,6 +104,32 @@ long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg) } #endif +/* + * ntfs_fileattr_get - inode_operations::fileattr_get + */ +int ntfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa) +{ + struct inode *inode = d_inode(dentry); + struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; + + /* Avoid any operation if inode is bad. */ + if (unlikely(is_bad_ni(ntfs_i(inode)))) + return -EINVAL; + + /* + * NTFS preserves case. Case sensitivity depends on mount options: + * with "nocase" mount option, NTFS is case-insensitive using + * Unicode case folding; otherwise it is case-sensitive. + */ + if (sbi->options && sbi->options->nocase) + fa->case_info = FILEATTR_CASEFOLD_UNICODE | + FILEATTR_CASE_PRESERVING; + else + fa->case_info = FILEATTR_CASEFOLD_NONE | + FILEATTR_CASE_PRESERVING; + return 0; +} + /* * ntfs_getattr - inode_operations::getattr */ @@ -1383,6 +1409,7 @@ const struct inode_operations ntfs_file_inode_operations = { .get_acl = ntfs_get_acl, .set_acl = ntfs_set_acl, .fiemap = ntfs_fiemap, + .fileattr_get = ntfs_fileattr_get, }; const struct file_operations ntfs_file_operations = { diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 3959f23c487a..ecdea6d83980 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -2085,6 +2085,7 @@ const struct inode_operations ntfs_link_inode_operations = { .get_link = ntfs_get_link, .setattr = ntfs_setattr, .listxattr = ntfs_listxattr, + .fileattr_get = ntfs_fileattr_get, }; const struct address_space_operations ntfs_aops = { diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c index 82c8ae56beee..2094e5409e43 100644 --- a/fs/ntfs3/namei.c +++ b/fs/ntfs3/namei.c @@ -519,6 +519,7 @@ const struct inode_operations ntfs_dir_inode_operations = { .getattr = ntfs_getattr, .listxattr = ntfs_listxattr, .fiemap = ntfs_fiemap, + .fileattr_get = ntfs_fileattr_get, }; const struct inode_operations ntfs_special_inode_operations = { @@ -527,6 +528,7 @@ const struct inode_operations ntfs_special_inode_operations = { .listxattr = ntfs_listxattr, .get_acl = ntfs_get_acl, .set_acl = ntfs_set_acl, + .fileattr_get = ntfs_fileattr_get, }; const struct dentry_operations ntfs_dentry_ops = { diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h index 630128716ea7..a178ca66e2e0 100644 --- a/fs/ntfs3/ntfs_fs.h +++ b/fs/ntfs3/ntfs_fs.h @@ -503,6 +503,7 @@ extern const struct file_operations ntfs_dir_operations; extern const struct file_operations ntfs_legacy_dir_operations; /* Globals from file.c */ +int ntfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa); int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, u32 flags); int ntfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, -- 2.52.0