From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 03DA2E9A03E for ; Tue, 17 Feb 2026 21:48:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.sourceforge.net; s=beta; h=Content-Transfer-Encoding:Content-Type:Cc: Reply-To:From:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Subject:MIME-Version:References:In-Reply-To: Message-ID:Date:To:Sender:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Vt2AmHjNCSNe7omR1XWTaNCNL3p/mHwTFCytg4tO5Zo=; b=ft5yNswviNDtmlsQ22HAI+lRWN rlUO1LrIWIAcR60CHzG3KavOfjdKp8CkDL/krxHpVX1D2P+VQZQc/U3enDWPzh/1mEJGka+YlyG84 /5LzRkj7VgT+zTUJ3T25knWmUqvb20amtRxSv6zw6bDuQgNtlzDoib+vMUnFDXzidASU=; Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1vsSvI-0005cf-MS; Tue, 17 Feb 2026 21:48:00 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1vsSvH-0005cX-T6 for linux-f2fs-devel@lists.sourceforge.net; Tue, 17 Feb 2026 21:47:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=WaC5dQZs8w3SuEpFOikgRhjCezWR6h9tS8M5No7AU5U=; b=ZIq5AbbX1SxpnCWyg/6TmFl+NE FNQ1bCcgCPmCnSQova+jN4i+m8z7VmAuc0bI7fgxX0Y1Rczwx7gK3cvyafabfZTkqHeZznc0CIZ/U QyOBPey1BfIxxlCZPFYHEM9czVTlfbjlZZMXhD0GOGowYjyCmVEWwX7HU3UIqF9S2Cro=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=WaC5dQZs8w3SuEpFOikgRhjCezWR6h9tS8M5No7AU5U=; b=IV9adYdRqWlgevgu1BVPeyTZAY YQNAryM0pfHZ8jy3dmGlOcFAYEh+0CRMOVzPSMSAhn/oy5X/k3OQ0/yCfwEmvH3u6zo0f7vXIv9J3 9RQ1jCGI6J0kKozOZu/MqWTlIted4QndnBbq02f73shOu7p49fkQBBJf5fg8p9lww5O0=; Received: from sea.source.kernel.org ([172.234.252.31]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1vsSvH-0002s7-97 for linux-f2fs-devel@lists.sourceforge.net; Tue, 17 Feb 2026 21:47:59 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id F3935436AA; Tue, 17 Feb 2026 21:47:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97A48C19423; Tue, 17 Feb 2026 21:47:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771364873; bh=cHhksxlO96QEawlhjyYnaSbl5+77pzjoROA8wlLGqgU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=keY6lgWl6avpxhgPWcmjHlUfLDc4ss4X+S8cI2hFMwDLb7ygULlg0mhII2bVcKU9g OyYchsw6BLGJuj2K5LS4p6TpRZw3TS0Mbtbjll4QOtZByOitsCjZGbSnUxMyvdf/us t0e+bwRVJM7BeqqNRn8Hj+rdXATZ788HpDbsg250knLGUJ3EA5vF5c/aB3gKCXvQKa MMrhC9L/cQxtYqMnQwr9mChCAS4PsQXRyXH8tzMEwZO09zJ4r0wWWo8sSsBmTVMJtG 0ndIMSBtOC/ZAihXGnIY4arUBF5MPFyr50pD10Lr0XgMVIf78PmYakqnv8yiFpM6UB k8f3FJHZQlQNg== To: Al Viro , Christian Brauner , Jan Kara Date: Tue, 17 Feb 2026 16:47:27 -0500 Message-ID: <20260217214741.1928576-4-cel@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260217214741.1928576-1-cel@kernel.org> References: <20260217214741.1928576-1-cel@kernel.org> MIME-Version: 1.0 X-Headers-End: 1vsSvH-0002s7-97 Subject: [f2fs-dev] [PATCH v8 03/17] fat: Implement fileattr_get for case sensitivity X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Chuck Lever via Linux-f2fs-devel Reply-To: Chuck Lever Cc: pc@manguebit.org, yuezhang.mo@sony.com, cem@kernel.org, almaz.alexandrovich@paragon-software.com, adilger.kernel@dilger.ca, linux-cifs@vger.kernel.org, sfrench@samba.org, slava@dubeyko.com, linux-ext4@vger.kernel.org, linkinjeon@kernel.org, sprasad@microsoft.com, frank.li@vivo.com, ronniesahlberg@gmail.com, glaubitz@physik.fu-berlin.de, jaegeuk@kernel.org, hirofumi@mail.parknet.co.jp, linux-nfs@vger.kernel.org, tytso@mit.edu, linux-api@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, senozhatsky@chromium.org, Chuck Lever , hansg@kernel.org, anna@kernel.org, linux-fsdevel@vger.kernel.org, sj1557.seo@samsung.com, trondmy@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Chuck Lever Report FAT's case sensitivity behavior via the FS_XFLAG_CASEFOLD and FS_XFLAG_CASENONPRESERVING flags. FAT filesystems are case-insensitive by default. MSDOS supports a 'nocase' mount option that enables case-sensitive behavior; check this option when reporting case sensitivity. VFAT long filename entries preserve case; without VFAT, only uppercased 8.3 short names are stored. MSDOS with 'nocase' also preserves case since the name-formatting code skips upcasing when 'nocase' is set. Check both options when reporting case preservation. Signed-off-by: Chuck Lever --- fs/fat/fat.h | 3 +++ fs/fat/file.c | 22 ++++++++++++++++++++++ fs/fat/namei_msdos.c | 1 + fs/fat/namei_vfat.c | 1 + 4 files changed, 27 insertions(+) diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 0d269dba897b..c5bcd1063f9c 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -10,6 +10,8 @@ #include #include +struct file_kattr; + /* * vfat shortname flags */ @@ -407,6 +409,7 @@ extern void fat_truncate_blocks(struct inode *inode, loff_t offset); extern int fat_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags); +int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa); extern int fat_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); diff --git a/fs/fat/file.c b/fs/fat/file.c index 124d9c5431c8..6823269a8604 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "fat.h" static long fat_fallocate(struct file *file, int mode, @@ -396,6 +397,26 @@ void fat_truncate_blocks(struct inode *inode, loff_t offset) fat_flush_inodes(inode->i_sb, inode, NULL); } +int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa) +{ + struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb); + + /* + * FAT filesystems are case-insensitive by default. MSDOS + * supports a 'nocase' mount option for case-sensitive behavior. + * + * VFAT long filename entries preserve case. Without VFAT, only + * uppercased 8.3 short names are stored. MSDOS with 'nocase' + * also preserves case. + */ + if (!sbi->options.nocase) + fa->fsx_xflags |= FS_XFLAG_CASEFOLD; + if (!sbi->options.isvfat && !sbi->options.nocase) + fa->fsx_xflags |= FS_XFLAG_CASENONPRESERVING; + return 0; +} +EXPORT_SYMBOL_GPL(fat_fileattr_get); + int fat_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags) { @@ -573,5 +594,6 @@ EXPORT_SYMBOL_GPL(fat_setattr); const struct inode_operations fat_file_inode_operations = { .setattr = fat_setattr, .getattr = fat_getattr, + .fileattr_get = fat_fileattr_get, .update_time = fat_update_time, }; diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index 048c103b506a..4a3db08e51c0 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -642,6 +642,7 @@ static const struct inode_operations msdos_dir_inode_operations = { .rename = msdos_rename, .setattr = fat_setattr, .getattr = fat_getattr, + .fileattr_get = fat_fileattr_get, .update_time = fat_update_time, }; diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 2acfe3123a72..18f4c316aa05 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -1185,6 +1185,7 @@ static const struct inode_operations vfat_dir_inode_operations = { .rename = vfat_rename2, .setattr = fat_setattr, .getattr = fat_getattr, + .fileattr_get = fat_fileattr_get, .update_time = fat_update_time, }; -- 2.53.0 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel