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GET /api/patches/2197426/?format=api
{ "id": 2197426, "url": "http://patchwork.ozlabs.org/api/patches/2197426/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260217214741.1928576-4-cel@kernel.org/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260217214741.1928576-4-cel@kernel.org>", "list_archive_url": null, "date": "2026-02-17T21:47:27", "name": "[v8,03/17] fat: Implement fileattr_get for case sensitivity", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "654898d9736ff39c3f13ed80267b4b0cb3e83030", "submitter": { "id": 86689, "url": "http://patchwork.ozlabs.org/api/people/86689/?format=api", "name": "Chuck Lever", "email": "cel@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260217214741.1928576-4-cel@kernel.org/mbox/", "series": [ { "id": 492484, "url": "http://patchwork.ozlabs.org/api/series/492484/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=492484", "date": "2026-02-17T21:47:24", "name": "Subject: Exposing case folding behavior", "version": 8, "mbox": "http://patchwork.ozlabs.org/series/492484/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2197426/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197426/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-9418-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.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=keY6lgWl;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-cifs+bounces-9418-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=\"keY6lgWl\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=10.30.226.201" ], "Received": [ "from sea.lore.kernel.org (sea.lore.kernel.org\n [IPv6:2600:3c0a:e001:db::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fFtbD3yH7z1xvq\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 18 Feb 2026 08:49:44 +1100 (AEDT)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id 330FD3050A05\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 17 Feb 2026 21:47:57 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 6C4302FA0DD;\n\tTue, 17 Feb 2026 21:47:54 +0000 (UTC)", "from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org\n [10.30.226.201])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 450A52F5308;\n\tTue, 17 Feb 2026 21:47:53 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 97A48C19423;\n\tTue, 17 Feb 2026 21:47:51 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1771364874; cv=none;\n b=rNkq6OSPL+m0M6fPdZsky9+sLjgxmEr7SKJB1F4dPpEXqyhCFZhf/4uY6R/OVqaINsNyN1UHwlgpYUP9SWm1/gTkITrqYhWUYOVX6fWWSQO0nH49et+qqj7ZSuGsqqzx+Sr+pn16bPTp+fJ5q8mBW3V5Tv1Njh41YFTQfQvlp+c=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1771364874; c=relaxed/simple;\n\tbh=cHhksxlO96QEawlhjyYnaSbl5+77pzjoROA8wlLGqgU=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=LmzDLvtP7tFQxoHse4KFGiVjkA/Juhmd/MMQUC7e9hNZjnSQXs0ei49WT7JyPqT9U4Da5uLloCo3OpP8RfXFfCXwQp/12ZLL3GUekNixj1oMw6eVJ82HXBLdQ91mzgs3psAHGXaeYXN97iKeayrFgdQaDWGQeC4+XVlbzXAH8aE=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=keY6lgWl; 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=1771364873;\n\tbh=cHhksxlO96QEawlhjyYnaSbl5+77pzjoROA8wlLGqgU=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=keY6lgWl6avpxhgPWcmjHlUfLDc4ss4X+S8cI2hFMwDLb7ygULlg0mhII2bVcKU9g\n\t OyYchsw6BLGJuj2K5LS4p6TpRZw3TS0Mbtbjll4QOtZByOitsCjZGbSnUxMyvdf/us\n\t t0e+bwRVJM7BeqqNRn8Hj+rdXATZ788HpDbsg250knLGUJ3EA5vF5c/aB3gKCXvQKa\n\t MMrhC9L/cQxtYqMnQwr9mChCAS4PsQXRyXH8tzMEwZO09zJ4r0wWWo8sSsBmTVMJtG\n\t 0ndIMSBtOC/ZAihXGnIY4arUBF5MPFyr50pD10Lr0XgMVIf78PmYakqnv8yiFpM6UB\n\t k8f3FJHZQlQNg==", "From": "Chuck Lever <cel@kernel.org>", "To": "Al Viro <viro@zeniv.linux.org.uk>,\n\tChristian Brauner <brauner@kernel.org>,\n\tJan Kara <jack@suse.cz>", "Cc": "linux-fsdevel@vger.kernel.org,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-xfs@vger.kernel.org,\n\tlinux-cifs@vger.kernel.org,\n\tlinux-nfs@vger.kernel.org,\n\tlinux-api@vger.kernel.org,\n\tlinux-f2fs-devel@lists.sourceforge.net,\n\thirofumi@mail.parknet.co.jp,\n\tlinkinjeon@kernel.org,\n\tsj1557.seo@samsung.com,\n\tyuezhang.mo@sony.com,\n\talmaz.alexandrovich@paragon-software.com,\n\tslava@dubeyko.com,\n\tglaubitz@physik.fu-berlin.de,\n\tfrank.li@vivo.com,\n\ttytso@mit.edu,\n\tadilger.kernel@dilger.ca,\n\tcem@kernel.org,\n\tsfrench@samba.org,\n\tpc@manguebit.org,\n\tronniesahlberg@gmail.com,\n\tsprasad@microsoft.com,\n\ttrondmy@kernel.org,\n\tanna@kernel.org,\n\tjaegeuk@kernel.org,\n\tchao@kernel.org,\n\thansg@kernel.org,\n\tsenozhatsky@chromium.org,\n\tChuck Lever <chuck.lever@oracle.com>", "Subject": "[PATCH v8 03/17] fat: Implement fileattr_get for case sensitivity", "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>", "Precedence": "bulk", "X-Mailing-List": "linux-cifs@vger.kernel.org", "List-Id": "<linux-cifs.vger.kernel.org>", "List-Subscribe": "<mailto:linux-cifs+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-cifs+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "From: Chuck Lever <chuck.lever@oracle.com>\n\nReport FAT's case sensitivity behavior via the FS_XFLAG_CASEFOLD\nand FS_XFLAG_CASENONPRESERVING flags. FAT filesystems are\ncase-insensitive by default.\n\nMSDOS supports a 'nocase' mount option that enables case-sensitive\nbehavior; check this option when reporting case sensitivity.\n\nVFAT long filename entries preserve case; without VFAT, only\nuppercased 8.3 short names are stored. MSDOS with 'nocase' also\npreserves case since the name-formatting code skips upcasing when\n'nocase' is set. Check both options when reporting case preservation.\n\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/fat/fat.h | 3 +++\n fs/fat/file.c | 22 ++++++++++++++++++++++\n fs/fat/namei_msdos.c | 1 +\n fs/fat/namei_vfat.c | 1 +\n 4 files changed, 27 insertions(+)", "diff": "diff --git a/fs/fat/fat.h b/fs/fat/fat.h\nindex 0d269dba897b..c5bcd1063f9c 100644\n--- a/fs/fat/fat.h\n+++ b/fs/fat/fat.h\n@@ -10,6 +10,8 @@\n #include <linux/fs_context.h>\n #include <linux/fs_parser.h>\n \n+struct file_kattr;\n+\n /*\n * vfat shortname flags\n */\n@@ -407,6 +409,7 @@ extern void fat_truncate_blocks(struct inode *inode, loff_t offset);\n extern int fat_getattr(struct mnt_idmap *idmap,\n \t\t const struct path *path, struct kstat *stat,\n \t\t u32 request_mask, unsigned int flags);\n+int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa);\n extern int fat_file_fsync(struct file *file, loff_t start, loff_t end,\n \t\t\t int datasync);\n \ndiff --git a/fs/fat/file.c b/fs/fat/file.c\nindex 124d9c5431c8..6823269a8604 100644\n--- a/fs/fat/file.c\n+++ b/fs/fat/file.c\n@@ -17,6 +17,7 @@\n #include <linux/fsnotify.h>\n #include <linux/security.h>\n #include <linux/falloc.h>\n+#include <linux/fileattr.h>\n #include \"fat.h\"\n \n static long fat_fallocate(struct file *file, int mode,\n@@ -396,6 +397,26 @@ void fat_truncate_blocks(struct inode *inode, loff_t offset)\n \tfat_flush_inodes(inode->i_sb, inode, NULL);\n }\n \n+int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n+{\n+\tstruct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);\n+\n+\t/*\n+\t * FAT filesystems are case-insensitive by default. MSDOS\n+\t * supports a 'nocase' mount option for case-sensitive behavior.\n+\t *\n+\t * VFAT long filename entries preserve case. Without VFAT, only\n+\t * uppercased 8.3 short names are stored. MSDOS with 'nocase'\n+\t * also preserves case.\n+\t */\n+\tif (!sbi->options.nocase)\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n+\tif (!sbi->options.isvfat && !sbi->options.nocase)\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASENONPRESERVING;\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(fat_fileattr_get);\n+\n int fat_getattr(struct mnt_idmap *idmap, const struct path *path,\n \t\tstruct kstat *stat, u32 request_mask, unsigned int flags)\n {\n@@ -573,5 +594,6 @@ EXPORT_SYMBOL_GPL(fat_setattr);\n const struct inode_operations fat_file_inode_operations = {\n \t.setattr\t= fat_setattr,\n \t.getattr\t= fat_getattr,\n+\t.fileattr_get\t= fat_fileattr_get,\n \t.update_time\t= fat_update_time,\n };\ndiff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c\nindex 048c103b506a..4a3db08e51c0 100644\n--- a/fs/fat/namei_msdos.c\n+++ b/fs/fat/namei_msdos.c\n@@ -642,6 +642,7 @@ static const struct inode_operations msdos_dir_inode_operations = {\n \t.rename\t\t= msdos_rename,\n \t.setattr\t= fat_setattr,\n \t.getattr\t= fat_getattr,\n+\t.fileattr_get\t= fat_fileattr_get,\n \t.update_time\t= fat_update_time,\n };\n \ndiff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c\nindex 2acfe3123a72..18f4c316aa05 100644\n--- a/fs/fat/namei_vfat.c\n+++ b/fs/fat/namei_vfat.c\n@@ -1185,6 +1185,7 @@ static const struct inode_operations vfat_dir_inode_operations = {\n \t.rename\t\t= vfat_rename2,\n \t.setattr\t= fat_setattr,\n \t.getattr\t= fat_getattr,\n+\t.fileattr_get\t= fat_fileattr_get,\n \t.update_time\t= fat_update_time,\n };\n \n", "prefixes": [ "v8", "03/17" ] }