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GET /api/patches/2197459/?format=api
{ "id": 2197459, "url": "http://patchwork.ozlabs.org/api/patches/2197459/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260217214741.1928576-14-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": "<20260217214741.1928576-14-cel@kernel.org>", "list_archive_url": null, "date": "2026-02-17T21:47:37", "name": "[v8,13/17] vboxsf: Implement fileattr_get for case sensitivity", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2889a8a6547743b92c2b4f911160067afa9ee76a", "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/20260217214741.1928576-14-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/2197459/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197459/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-9428-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=VUUjwpqa;\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-9428-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=\"VUUjwpqa\"", "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 4fFtgn0jgjz1xwC\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 18 Feb 2026 08:53:41 +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 2E883302A058\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 17 Feb 2026 21:48:25 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 36D992FC874;\n\tTue, 17 Feb 2026 21:48:19 +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 100E62FB630;\n\tTue, 17 Feb 2026 21:48:18 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 81EA3C19425;\n\tTue, 17 Feb 2026 21:48:16 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1771364899; cv=none;\n b=BIouyOas5O8KsIkcEGeTDDW8zSzQQHfTfhHWY7XdoKaElqMqDOxCdEfHJKd9TZ7vMwgejVKGg6YKHNPhZPkjwWoxNaZLFGwaHbuU6d1t/rz45E2E2FpgotSXcx5yo6SOm9HNpUzhHQ+fF7XjKrt3cHdrJP0AKobSM+tsdYoD1Xo=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1771364899; c=relaxed/simple;\n\tbh=pqdeI5TQwNAuQp+gfTQuqsR0XDwiEm8X5PZvM+QQUsU=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=SQ3kdRIttRvgvRO84AMvjxp/ppwBKvR4g0lG3qzMCeoqrrrQifgxEWp9G6SxgETCQ5ZiqZuy5M46ddfWVs0tTTm032PQGHyx48XcDicKITTA7WsKaqPaXEVaRqDCFCZiOCJYG3THDcXb+n/QyD5+3hTVGfWCquWT2tUClpSSxMI=", "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=VUUjwpqa; 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=1771364898;\n\tbh=pqdeI5TQwNAuQp+gfTQuqsR0XDwiEm8X5PZvM+QQUsU=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=VUUjwpqaqT8j+ucTcrYiXZcuuBReXbKR2b1qvdLgba5tEaA+Q10sloFLiIdWMUuG2\n\t Zxa62EjYG/p0e5DDN1d9+Ldln1aOvpCuO4myfvsCYWpQJltxbpCgdaoFj3RmuIf16K\n\t 8MgG/OKf0Irbnl6B2BaQhG9MkoLbXewkmsdP5qThLeQMifJekJU2NbWspe2fjNHywe\n\t jFOBulYQXyzbtVtlWK9ed20sIzDRTKClcnfl1taD3pAIyF6zjh3QwXF8LuCpxJCq5t\n\t XubPWp/qBSXq+8OFXuB2vKTVF4vW8N5ju4lqp+5R2lwjqSQBybHmrBOljT6JxGOD3D\n\t bVFhZB0hV93nQ==", "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 13/17] vboxsf: Implement fileattr_get for case sensitivity", "Date": "Tue, 17 Feb 2026 16:47:37 -0500", "Message-ID": "<20260217214741.1928576-14-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\nUpper layers such as NFSD need a way to query whether a\nfilesystem handles filenames in a case-sensitive manner. Report\nVirtualBox shared folder case handling behavior via the\nFS_XFLAG_CASEFOLD flag.\n\nThe case sensitivity property is queried from the VirtualBox host\nservice at mount time and cached in struct vboxsf_sbi. The host\ndetermines case sensitivity based on the underlying host filesystem\n(for example, Windows NTFS is case-insensitive while Linux ext4 is\ncase-sensitive).\n\nVirtualBox shared folders always preserve filename case exactly\nas provided by the guest. The host interface does not expose a\ncase_preserving property, so this is hardcoded to true.\n\nThe callback is registered in all three inode_operations\nstructures (directory, file, and symlink) to ensure consistent\nreporting across all inode types.\n\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/vboxsf/dir.c | 1 +\n fs/vboxsf/file.c | 6 ++++--\n fs/vboxsf/super.c | 4 ++++\n fs/vboxsf/utils.c | 31 +++++++++++++++++++++++++++++++\n fs/vboxsf/vfsmod.h | 6 ++++++\n 5 files changed, 46 insertions(+), 2 deletions(-)", "diff": "diff --git a/fs/vboxsf/dir.c b/fs/vboxsf/dir.c\nindex 42bedc4ec7af..c5bd3271aa96 100644\n--- a/fs/vboxsf/dir.c\n+++ b/fs/vboxsf/dir.c\n@@ -477,4 +477,5 @@ const struct inode_operations vboxsf_dir_iops = {\n \t.symlink = vboxsf_dir_symlink,\n \t.getattr = vboxsf_getattr,\n \t.setattr = vboxsf_setattr,\n+\t.fileattr_get = vboxsf_fileattr_get,\n };\ndiff --git a/fs/vboxsf/file.c b/fs/vboxsf/file.c\nindex 111752010edb..30a4f4262928 100644\n--- a/fs/vboxsf/file.c\n+++ b/fs/vboxsf/file.c\n@@ -222,7 +222,8 @@ const struct file_operations vboxsf_reg_fops = {\n \n const struct inode_operations vboxsf_reg_iops = {\n \t.getattr = vboxsf_getattr,\n-\t.setattr = vboxsf_setattr\n+\t.setattr = vboxsf_setattr,\n+\t.fileattr_get = vboxsf_fileattr_get,\n };\n \n static int vboxsf_read_folio(struct file *file, struct folio *folio)\n@@ -389,5 +390,6 @@ static const char *vboxsf_get_link(struct dentry *dentry, struct inode *inode,\n }\n \n const struct inode_operations vboxsf_lnk_iops = {\n-\t.get_link = vboxsf_get_link\n+\t.get_link = vboxsf_get_link,\n+\t.fileattr_get = vboxsf_fileattr_get,\n };\ndiff --git a/fs/vboxsf/super.c b/fs/vboxsf/super.c\nindex 241647b060ee..fcabeca2a339 100644\n--- a/fs/vboxsf/super.c\n+++ b/fs/vboxsf/super.c\n@@ -185,6 +185,10 @@ static int vboxsf_fill_super(struct super_block *sb, struct fs_context *fc)\n \tif (err)\n \t\tgoto fail_unmap;\n \n+\terr = vboxsf_query_case_sensitive(sbi);\n+\tif (err)\n+\t\tgoto fail_unmap;\n+\n \tsb->s_magic = VBOXSF_SUPER_MAGIC;\n \tsb->s_blocksize = 1024;\n \tsb->s_maxbytes = MAX_LFS_FILESIZE;\ndiff --git a/fs/vboxsf/utils.c b/fs/vboxsf/utils.c\nindex 9515bbf0b54c..658b8b0ebbd7 100644\n--- a/fs/vboxsf/utils.c\n+++ b/fs/vboxsf/utils.c\n@@ -11,6 +11,7 @@\n #include <linux/sizes.h>\n #include <linux/pagemap.h>\n #include <linux/vfs.h>\n+#include <linux/fileattr.h>\n #include \"vfsmod.h\"\n \n struct inode *vboxsf_new_inode(struct super_block *sb)\n@@ -567,3 +568,33 @@ int vboxsf_dir_read_all(struct vboxsf_sbi *sbi, struct vboxsf_dir_info *sf_d,\n \n \treturn err;\n }\n+\n+int vboxsf_query_case_sensitive(struct vboxsf_sbi *sbi)\n+{\n+\tstruct shfl_volinfo volinfo = {};\n+\tu32 buf_len;\n+\tint err;\n+\n+\tbuf_len = sizeof(volinfo);\n+\terr = vboxsf_fsinfo(sbi->root, 0, SHFL_INFO_GET | SHFL_INFO_VOLUME,\n+\t\t\t &buf_len, &volinfo);\n+\tif (err)\n+\t\treturn err;\n+\n+\tsbi->case_insensitive = !volinfo.properties.case_sensitive;\n+\treturn 0;\n+}\n+\n+int vboxsf_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n+{\n+\tstruct vboxsf_sbi *sbi = VBOXSF_SBI(dentry->d_sb);\n+\n+\t/*\n+\t * VirtualBox shared folders preserve filename case exactly as\n+\t * provided by the guest (the default). The host interface does\n+\t * not expose a case-preservation property.\n+\t */\n+\tif (sbi->case_insensitive)\n+\t\tfa->fsx_xflags |= FS_XFLAG_CASEFOLD;\n+\treturn 0;\n+}\ndiff --git a/fs/vboxsf/vfsmod.h b/fs/vboxsf/vfsmod.h\nindex 05973eb89d52..b61afd0ce842 100644\n--- a/fs/vboxsf/vfsmod.h\n+++ b/fs/vboxsf/vfsmod.h\n@@ -47,6 +47,7 @@ struct vboxsf_sbi {\n \tu32 next_generation;\n \tu32 root;\n \tint bdi_id;\n+\tbool case_insensitive;\n };\n \n /* per-inode information */\n@@ -111,6 +112,11 @@ void vboxsf_dir_info_free(struct vboxsf_dir_info *p);\n int vboxsf_dir_read_all(struct vboxsf_sbi *sbi, struct vboxsf_dir_info *sf_d,\n \t\t\tu64 handle);\n \n+int vboxsf_query_case_sensitive(struct vboxsf_sbi *sbi);\n+\n+struct file_kattr;\n+int vboxsf_fileattr_get(struct dentry *dentry, struct file_kattr *fa);\n+\n /* from vboxsf_wrappers.c */\n int vboxsf_connect(void);\n void vboxsf_disconnect(void);\n", "prefixes": [ "v8", "13/17" ] }