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GET /api/1.2/patches/2232068/?format=api
{ "id": 2232068, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2232068/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260502-case-sensitivity-v13-7-aa853140311f@oracle.com/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/1.2/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-v13-7-aa853140311f@oracle.com>", "list_archive_url": null, "date": "2026-05-02T14:20:52", "name": "[v13,07/15] hfsplus: Report case sensitivity in fileattr_get", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "b009f3d40d1289dbc8a29659a250a1f4ee4cc91f", "submitter": { "id": 86689, "url": "http://patchwork.ozlabs.org/api/1.2/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-v13-7-aa853140311f@oracle.com/mbox/", "series": [ { "id": 502531, "url": "http://patchwork.ozlabs.org/api/1.2/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/2232068/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232068/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=3bXy=C7=vger.kernel.org=linux-ext4+bounces-16282-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=iGtBLUSF;\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=1777731713;\n\tbh=MCKLEZC7Qx1FnQ0cZy8w8gaJqor/Oy2yvhPP57H1cWo=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=iGtBLUSF+6X2+9FyfJCet7RcIGjsQ3/QE4Aelk7z9F9oqSLPGRLUmlD+WDl7G7DQh\n\t UZUnxHQt63NbC+WeuPZkxp1xdYeb/qOyNjy7YnE6ULTlNC6EK/Vfe307gS3hJ8KsNx\n\t vg7H0N/4BWWW+EIg7RAUdwnhkbiKSSyB3cxCaJziQxhFSEkw5V0ut0EtzW8abXqG63\n\t jo+zTkn7De+sC4BD2+XbqsP+WeJCTcyVM+G4/H9PLfN9mWPqMUDY7yIXQDEBCWrlvp\n\t I4mvT1CgArb3YDqxqTjldCtRFJF4/Ei+xNd8u3CqVI/nYhejChEYv2m5Y/kcxZdynp\n\t nKvV7GCBPmS3g==", "From": "Chuck Lever <cel@kernel.org>", "Date": "Sat, 02 May 2026 10:20:52 -0400", "Subject": "[PATCH v13 07/15] hfsplus: 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-v13-7-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=2621;\n i=chuck.lever@oracle.com; h=from:subject:message-id;\n bh=yr1QdNRA2c3h2NX2KtSKVIgsso0huI4pF/+aMWQ1VYs=;\n b=owEBbQKS/ZANAwAKATNqszNvZn+XAcsmYgBp9ghQXlTy0BV79mXGcUu0Hfjx8S0jG9arjDr7z\n y6V7cr4KwmJAjMEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCafYIUAAKCRAzarMzb2Z/\n l07AD/9Iq3bdIv0k7pytSc+UdefTTkptZ2WriQF+ImjlXqgQbAMmyNasFaC7/WT2D/RQV7iYcI+\n GE9iydJujgjH5Q5/Ks9Y/zjEf7qZVJQgRW+g0ogLjyYHEY0dPlAuTEuX4+Vx/DuXVubV/N4udMZ\n tksioir7JVT8BNvcoFzL/MtNvTdn8TB5HfSCZU1iEaYYjxMI37lBPrY+odoEg0FeUzw73pYz3fd\n RpphpprtcwAmLS5giRpLc+FFjRKA2Qh7oRZZr9ETpLsl6DUIp50HQiwXW3HvwN87BLu/ElWvik6\n 9kT9LJmr9jQxVClZkO991RjXjiepcmQGeKKQB+FMDYd+IWAjl4ppIDim99PfhoaFD8mJKlF4rLI\n 56dyyaaktsD3pExexfZmz/nkVyvYfyYymJAv6HmYXlmB0JM0my23hOlS0fezX39q/8uzcOK0HTv\n X3n9vabqmn10QM6fZQP/n1Mx6oW57grHrOV47pOCJKSzI9d+VjqHqCMHZk5CuC6Njb1yckj3mJL\n UbKVHRavZI7n68qX1cxu8xO8uzJJiNFxaQIQv4Yzwp92qVJhBrR/opfxJal/+FTwgvD/Z3yGSYd\n JkUXiIsXCyJAbiLN/6f0ELx0/o1mxhv6JpQ42feNivM7Aijj0WTnWsPI186WOyMBY7fHl6IGS6C\n rGtgsWvnogTc39Q==", "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\nAdd case sensitivity reporting to the existing hfsplus_fileattr_get()\nfunction via the FS_XFLAG_CASEFOLD flag. HFS+ always preserves case\nat rest.\n\nCase sensitivity depends on how the volume was formatted: HFSX\nvolumes may be either case-sensitive or case-insensitive, indicated\nby the HFSPLUS_SB_CASEFOLD superblock flag.\n\nFS_XFLAG_CASEFOLD is read-only: FS_XFLAG_RDONLY_MASK ensures\nFS_IOC_FSSETXATTR strips it. The legacy FS_IOC_SETFLAGS path in\nhfsplus_fileattr_set() also allows FS_CASEFOLD_FL through its\nallowlist on case-insensitive volumes so that a chattr\nread-modify-write cycle does not fail with EOPNOTSUPP.\n\nReviewed-by: Viacheslav Dubeyko <slava@dubeyko.com>\nReviewed-by: Roland Mainz <roland.mainz@nrubsig.org>\nSigned-off-by: Chuck Lever <chuck.lever@oracle.com>\n---\n fs/hfsplus/inode.c | 16 +++++++++++++++-\n 1 file changed, 15 insertions(+), 1 deletion(-)", "diff": "diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c\nindex d05891ec492e..5565c14b4bf6 100644\n--- a/fs/hfsplus/inode.c\n+++ b/fs/hfsplus/inode.c\n@@ -740,6 +740,7 @@ int hfsplus_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n {\n \tstruct inode *inode = d_inode(dentry);\n \tstruct hfsplus_inode_info *hip = HFSPLUS_I(inode);\n+\tstruct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);\n \tunsigned int flags = 0;\n \n \tif (inode->i_flags & S_IMMUTABLE)\n@@ -748,6 +749,8 @@ int hfsplus_fileattr_get(struct dentry *dentry, struct file_kattr *fa)\n \t\tflags |= FS_APPEND_FL;\n \tif (hip->userflags & HFSPLUS_FLG_NODUMP)\n \t\tflags |= FS_NODUMP_FL;\n+\tif (test_bit(HFSPLUS_SB_CASEFOLD, &sbi->flags))\n+\t\tflags |= FS_CASEFOLD_FL;\n \n \tfileattr_fill_flags(fa, flags);\n \n@@ -759,13 +762,24 @@ int hfsplus_fileattr_set(struct mnt_idmap *idmap,\n {\n \tstruct inode *inode = d_inode(dentry);\n \tstruct hfsplus_inode_info *hip = HFSPLUS_I(inode);\n+\tstruct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);\n+\tunsigned int allowed = FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL;\n \tunsigned int new_fl = 0;\n \n \tif (fileattr_has_fsx(fa))\n \t\treturn -EOPNOTSUPP;\n \n+\t/*\n+\t * FS_CASEFOLD_FL reflects HFSPLUS_SB_CASEFOLD, a mount-time\n+\t * property. Accept it as a no-op so chattr's RMW round-trip\n+\t * succeeds; reject any attempt to enable it on a volume that\n+\t * was not formatted case-insensitive.\n+\t */\n+\tif (test_bit(HFSPLUS_SB_CASEFOLD, &sbi->flags))\n+\t\tallowed |= FS_CASEFOLD_FL;\n+\n \t/* don't silently ignore unsupported ext2 flags */\n-\tif (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL))\n+\tif (fa->flags & ~allowed)\n \t\treturn -EOPNOTSUPP;\n \n \tif (fa->flags & FS_IMMUTABLE_FL)\n", "prefixes": [ "v13", "07/15" ] }