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GET /api/patches/2232071/?format=api
{ "id": 2232071, "url": "http://patchwork.ozlabs.org/api/patches/2232071/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260502-case-sensitivity-v13-8-aa853140311f@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": "<20260502-case-sensitivity-v13-8-aa853140311f@oracle.com>", "list_archive_url": null, "date": "2026-05-02T14:20:53", "name": "[v13,08/15] xfs: Report case sensitivity in fileattr_get", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e558c18e1100b885a32d8f38e98b546eac1b56f9", "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/20260502-case-sensitivity-v13-8-aa853140311f@oracle.com/mbox/", "series": [ { "id": 502531, "url": "http://patchwork.ozlabs.org/api/series/502531/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=502531", "date": "2026-05-02T14:20:45", "name": "Exposing case folding behavior", "version": 13, "mbox": "http://patchwork.ozlabs.org/series/502531/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232071/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232071/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=GPOp=C7=vger.kernel.org=linux-ext4+bounces-16283-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=FmAH8LNt;\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=1777731719;\n\tbh=29KDob7D6wjAqke0cQHbkTiX/VafLuHXAnmywDOdkA0=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=FmAH8LNtbKByp86SJg6x0fidS+VkTFGu0bW9/NNSFNI5WqhOkTIlHBtzHZnldYj3c\n\t Vb3S4linM4xGxAzCEJcOaDrpzapSUajChudnmAtENzBp1daDeN2aoQXAKOp8QE+p42\n\t dfqzwAETmDdeL+3TiF5vNN0tj6AM0h5K4vONqvsSVcMc8CUqzWLd1DfLL0oWKSWY3J\n\t WwMJOI0mZUHHafXQa96y1bBrwDyf1utcpHEpIDCZ2xBdb34J9P0mh8Hse3mI+PPkXl\n\t 8l+HJmHrxoumrRgitP2dgJor8nFOZAouvvNdZiPLhwKz/R9WUEa2FqHkTNpkjNlO9j\n\t ULFcdtjtc11UQ==", "From": "Chuck Lever <cel@kernel.org>", "Date": "Sat, 02 May 2026 10:20:53 -0400", "Subject": "[PATCH v13 08/15] xfs: Report case sensitivity in fileattr_get", "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": "<20260502-case-sensitivity-v13-8-aa853140311f@oracle.com>", "References": "<20260502-case-sensitivity-v13-0-aa853140311f@oracle.com>", "In-Reply-To": "<20260502-case-sensitivity-v13-0-aa853140311f@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>,\n Roland Mainz <roland.mainz@nrubsig.org>", "X-Mailer": "b4 0.16-dev", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=2743;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=5XtPWdQD9rNyvcNieFdC0PM+y6dNjGmJfHpo+ZOq7bw=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp9ghRAsLTlbIsdA+q+yJuO2iAN4VgWvZvmcv9Q\n ZLW5iROxxmJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCafYIUQAKCRAzarMzb2Z/\n l5UiD/9UbV/FPlFnUrXSyuCt4v5W83BQJok4mszG//V+BeheN0rL63Wd0Pr+wRLBDtTkXigqsRt\n CFVwxRul/9KiGVlYU9bp3XuAbaveJB7hJk9ZJUu9mDz/YJabMwLg+nbVgyzDMHv3Scgq0T7femF\n Tlb0b65fE7kHyhGdUty4r8Cpg24v6lMx4vuplCIz+NOoKXFFMWGvG1Xq1+NZqMGeUjJAafPN9QQ\n PGWEWNWWTw2vtqFRyHAC4Yii7JLO4f2jJqg0/Huvae4hV/rxTUC/MCBCxkjx1iCiLDaIFSdh5Mt\n 4RrdI56tNOI7vWv1ryAXgckgzEpc4LXn7LbtQWUoSM9i02WRYyzLxYF4JaSALBIL7E+bCaZ/YPz\n cJvXcs5nxAlJ6QbbnFLifKY+kWCRuidRrL3YRPUtLAaAg4TD5md4u1BYfcGT8qCQWJb6EFjWGOw\n Hz0TK0PIVhshnWEk9p1QGi+d7v831mddYOjWhHhHP0rYwMG5h1Gv1rXVBi8Eh83xQOpPWLTfg6W\n qX6V2FN4+YCuMnDebexsdLcXQ/fs424eqtBoqX+uFghwXRYstTVxcCz1C79pQjJ0V+c54KrYKHi\n ve3MK0sRjisbA5P5Wv6krvDtFxKJhpIMDHlxdZylQMssXEPqGVG+z/H65j8sZmPwB3RX+yyuLPO\n 36o7cXziDSrCR0A==", "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\nUpper layers such as NFSD need to query whether a filesystem\nis case-sensitive. Add FS_XFLAG_CASEFOLD to xfs_ip2xflags()\nwhen the filesystem is formatted with the ASCIICI feature\nflag. This serves both FS_IOC_FSGETXATTR (via xfs_fill_fsxattr()\nin xfs_fileattr_get()) and XFS_IOC_BULKSTAT (which populates\nbs_xflags directly from xfs_ip2xflags()), so bulkstat consumers\nand per-inode queries see a consistent view of the filesystem's\ncase-folding behavior.\n\nFS_XFLAG_CASEFOLD is read-only: FS_XFLAG_RDONLY_MASK ensures\nFS_IOC_FSSETXATTR strips it, and xfs_flags2diflags() has no\nclause for CASEFOLD so the on-disk diflags are unaffected.\nThe legacy FS_IOC_SETFLAGS path in xfs_fileattr_set() also\nallows FS_CASEFOLD_FL through its allowlist on ASCIICI\nfilesystems so that a chattr read-modify-write cycle does\nnot fail with EOPNOTSUPP.\n\nXFS always preserves case. XFS is case-sensitive by default,\nbut supports ASCII case-insensitive lookups when formatted\nwith the ASCIICI feature flag.\n\nReviewed-by: Roland Mainz <roland.mainz@nrubsig.org>\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/xfs/libxfs/xfs_inode_util.c | 2 ++\n fs/xfs/xfs_ioctl.c | 20 +++++++++++++++++---\n 2 files changed, 19 insertions(+), 3 deletions(-)", "diff": "diff --git a/fs/xfs/libxfs/xfs_inode_util.c b/fs/xfs/libxfs/xfs_inode_util.c\nindex 551fa51befb6..82be54b6f8d3 100644\n--- a/fs/xfs/libxfs/xfs_inode_util.c\n+++ b/fs/xfs/libxfs/xfs_inode_util.c\n@@ -130,6 +130,8 @@ xfs_ip2xflags(\n \n \tif (xfs_inode_has_attr_fork(ip))\n \t\tflags |= FS_XFLAG_HASATTR;\n+\tif (xfs_has_asciici(ip->i_mount))\n+\t\tflags |= FS_XFLAG_CASEFOLD;\n \treturn flags;\n }\n \ndiff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c\nindex ed9b4846c05f..f8216f74679f 100644\n--- a/fs/xfs/xfs_ioctl.c\n+++ b/fs/xfs/xfs_ioctl.c\n@@ -755,9 +755,23 @@ xfs_fileattr_set(\n \ttrace_xfs_ioctl_setattr(ip);\n \n \tif (!fa->fsx_valid) {\n-\t\tif (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL |\n-\t\t\t\t FS_NOATIME_FL | FS_NODUMP_FL |\n-\t\t\t\t FS_SYNC_FL | FS_DAX_FL | FS_PROJINHERIT_FL))\n+\t\tunsigned int allowed = FS_IMMUTABLE_FL | FS_APPEND_FL |\n+\t\t\t\t FS_NOATIME_FL | FS_NODUMP_FL |\n+\t\t\t\t FS_SYNC_FL | FS_DAX_FL |\n+\t\t\t\t FS_PROJINHERIT_FL;\n+\n+\t\t/*\n+\t\t * FS_CASEFOLD_FL reflects the ASCIICI superblock feature,\n+\t\t * a read-only property. Accept it as a no-op so chattr's\n+\t\t * RMW round-trip succeeds; reject any attempt to enable\n+\t\t * it on a non-ASCIICI filesystem. xfs_flags2diflags()\n+\t\t * has no clause for CASEFOLD, so the bit is dropped from\n+\t\t * the on-disk diflags regardless.\n+\t\t */\n+\t\tif (xfs_has_asciici(mp))\n+\t\t\tallowed |= FS_CASEFOLD_FL;\n+\n+\t\tif (fa->flags & ~allowed)\n \t\t\treturn -EOPNOTSUPP;\n \t}\n \n", "prefixes": [ "v13", "08/15" ] }