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GET /api/patches/2227347/?format=api
{ "id": 2227347, "url": "http://patchwork.ozlabs.org/api/patches/2227347/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260423-case-sensitivity-v10-17-c385d674a6cf@oracle.com/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/projects/8/?format=api", "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-v10-17-c385d674a6cf@oracle.com>", "list_archive_url": null, "date": "2026-04-23T13:12:20", "name": "[v10,17/17] ksmbd: Report filesystem case sensitivity via FS_ATTRIBUTE_INFORMATION", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "42053a45cb095877e6776e8fdc4f19e488431b62", "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-ext4/patch/20260423-case-sensitivity-v10-17-c385d674a6cf@oracle.com/mbox/", "series": [ { "id": 501194, "url": "http://patchwork.ozlabs.org/api/series/501194/?format=api", "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/2227347/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227347/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=ZwlI=CW=vger.kernel.org=linux-ext4+bounces-16066-patchwork-incoming=ozlabs.org@ozlabs.org>", "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=K4OLhQiL;\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=1776949984;\n\tbh=UNo7HHcDIV7JWpD0f7CVGZkCuGE2I4nW5HuPOm8dnXs=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=K4OLhQiL5q2gmBR6fMg7OQc8/AgWzGgE7c8lWakCv7FgQPstzhyPNpp5NVg8rSH5t\n\t mboZro4Y4RDogKy4pwOYTTBKrM1nSl9+T/ayjwK5XjqPBicW7it5FJsOONHrR9vTxJ\n\t Em4nM8x6k2v7UjnhrFFcU6nGFe5bpzMFO9Yv2iH5Dpjv9OQ0eAYvP12zCL5VShV54s\n\t MD1CiSWkCn5D5uE2yRw158f+KjfNGR6ZDQrcaMl9StikZc7kMsAlmk6gXyZp6scNMI\n\t iFwiMOsMVpSckv3ECa8Psgpi8yqngU7TcH0G6Y1+SeQ/6d/A1XCfyYIuIAkh/plDrG\n\t RKm2aYHMHvm+A==", "From": "Chuck Lever <cel@kernel.org>", "Date": "Thu, 23 Apr 2026 09:12:20 -0400", "Subject": "[PATCH v10 17/17] ksmbd: Report filesystem case sensitivity via\n FS_ATTRIBUTE_INFORMATION", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260423-case-sensitivity-v10-17-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 <viro@zeniv.linux.org.uk>,\n Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>", "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 <chuck.lever@oracle.com>", "X-Mailer": "b4 0.16-dev", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=2582;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=/M15phZsxO4dYF/kfeaMD4laDtLmxamo65xsRXL/kkg=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp6hq0lrMRP/taRhAjVj2Nj34LkMZtiUQ1WGFUj\n 5GhhBTIsAWJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCaeoatAAKCRAzarMzb2Z/\n l7+iD/9RTr4hntMPxhl7UX1Xa9+pHwyzL17Hm9T+TA6M+p7usu+ddsGl6douosfJVOewO3FyoUV\n kUkhZBoIos+DHr5mWvcU/p0Bmt6IvhCdDIg7EkUJHbOUd+a821W9CDt9NGNwLdWnHU7rJATocLP\n 1IGEUvEUEm12ihgZPtNYLLOGf99q7H8f3fkR0RtAxSKaP3KkPkYO5IDkZJlqKdShfxbwU/l0IRD\n 3yb59efObNpfct0TPF9BY3UR/YAGA97NsvtptvyitXjtb65xeeFKZVJN7GyAGSkvQ8YFAxiYYLt\n SshlPCE3GLBxxGmAQBgkH56S67IiXI1kxMrddESmsTOExvc0rzaVvm97m9wYoLvy+dmt+12UBJ4\n WUGXgh41TFpWIt1+RYtZ/WBboC0B5IhkSou7z6IlksVYl5G8q/9fUAoQBM79v0B0bNbzWXWfq0a\n WjPFYvD3qovj8sX7CcfPXlXnNU0L40gt+MNRbNGtZjppbWixbTv77TAGbn51rxVQnTfulBLoDpF\n 4+VqzzCzM1XTKJCPYOETZ/yhXvjZZtNa5BQVaerGOMBIaCOC7yop2xyTiBOoMevYEA+qaoZzGqz\n 9+XTxfknXthMElnBLQC5JLn6zz/IHiwZx5awniQHRHH18z8MiIXnIbCjfrj92Owq7tSiKzrCsNU\n V1E030k7effzOsA==", "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 <chuck.lever@oracle.com>\n\nFS_ATTRIBUTE_INFORMATION responses have always reported\nFILE_CASE_SENSITIVE_SEARCH and FILE_CASE_PRESERVED_NAMES\nunconditionally. Case-insensitive filesystems like exFAT, and\ncasefolded directories on ext4 or f2fs, have no way to signal\ntheir actual semantics to SMB clients.\n\nNow that filesystems expose case behavior through ->fileattr_get,\nquery it via vfs_fileattr_get() and translate the FS_XFLAG_CASEFOLD\nand FS_XFLAG_CASENONPRESERVING flags into the corresponding SMB\nattributes. Filesystems without ->fileattr_get continue reporting\ndefault POSIX behavior (case-sensitive, case-preserving).\n\nSMB's FS_ATTRIBUTE_INFORMATION reports per-share attributes from\nthe share root, not per-file. Shares mixing casefold and\nnon-casefold directories report the root directory's behavior.\n\nAcked-by: Namjae Jeon <linkinjeon@kernel.org>\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/smb/server/smb2pdu.c | 25 +++++++++++++++++++------\n 1 file changed, 19 insertions(+), 6 deletions(-)", "diff": "diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c\nindex ee32e61b6d3c..05245562bcb8 100644\n--- a/fs/smb/server/smb2pdu.c\n+++ b/fs/smb/server/smb2pdu.c\n@@ -14,6 +14,7 @@\n #include <linux/falloc.h>\n #include <linux/mount.h>\n #include <linux/filelock.h>\n+#include <linux/fileattr.h>\n \n #include \"glob.h\"\n #include \"smbfsctl.h\"\n@@ -5541,16 +5542,28 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work,\n \tcase FS_ATTRIBUTE_INFORMATION:\n \t{\n \t\tFILE_SYSTEM_ATTRIBUTE_INFO *info;\n+\t\tstruct file_kattr fa = {};\n \t\tsize_t sz;\n+\t\tu32 attrs;\n+\t\tint err;\n \n \t\tinfo = (FILE_SYSTEM_ATTRIBUTE_INFO *)rsp->Buffer;\n-\t\tinfo->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |\n-\t\t\t\t\t FILE_PERSISTENT_ACLS |\n-\t\t\t\t\t FILE_UNICODE_ON_DISK |\n-\t\t\t\t\t FILE_CASE_PRESERVED_NAMES |\n-\t\t\t\t\t FILE_CASE_SENSITIVE_SEARCH |\n-\t\t\t\t\t FILE_SUPPORTS_BLOCK_REFCOUNTING);\n+\t\tattrs = FILE_SUPPORTS_OBJECT_IDS |\n+\t\t\tFILE_PERSISTENT_ACLS |\n+\t\t\tFILE_UNICODE_ON_DISK |\n+\t\t\tFILE_SUPPORTS_BLOCK_REFCOUNTING;\n \n+\t\terr = vfs_fileattr_get(path.dentry, &fa);\n+\t\tif (err && err != -ENOIOCTLCMD && err != -ENOTTY) {\n+\t\t\tpath_put(&path);\n+\t\t\treturn err;\n+\t\t}\n+\t\tif (!(fa.fsx_xflags & FS_XFLAG_CASEFOLD))\n+\t\t\tattrs |= FILE_CASE_SENSITIVE_SEARCH;\n+\t\tif (!(fa.fsx_xflags & FS_XFLAG_CASENONPRESERVING))\n+\t\t\tattrs |= FILE_CASE_PRESERVED_NAMES;\n+\n+\t\tinfo->Attributes = cpu_to_le32(attrs);\n \t\tinfo->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);\n \n \t\tif (test_share_config_flag(work->tcon->share_conf,\n", "prefixes": [ "v10", "17/17" ] }