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Tue, 20 Jan 2026 14:25:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DFC88C19423; Tue, 20 Jan 2026 14:24:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768919100; bh=PrjBIgqMZlEiWazg7UCKbeIwEx1gUf+zQ+J1E5IoNSw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=joErGhnMxpPDVNbFfZz/yvqUXpNYj0yDUZ36SZXRmjwptNnx7rlyWYJGaprbVCa6A pK+fVGp9+9jPa/TAKapKtpnlrOnO/YRTUyATmU8/RmgCd6TgbX06rUwfHw/9c+NO1B jXm9PxMAKF9A+9g2a7AsriizaCU3KXMhMULl9zYAbAtGxptwbtDrruBt4tFEMwvC13 OisNXOB2ncqrbRFbRDFvczS2zn0Tf283mKmkdmG04lf66jj3h3TPvbLQLk/pvCYbfS zwqgTaPmqtyEWYTtHUq1xWCk3idQWCUxcHzb1d9KG0uuyIyGA/s14gZCkBZkdmsUPc lOomn0ulkxnsg== To: Al Viro , Christian Brauner , Jan Kara Date: Tue, 20 Jan 2026 09:24:30 -0500 Message-ID: <20260120142439.1821554-8-cel@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260120142439.1821554-1-cel@kernel.org> References: <20260120142439.1821554-1-cel@kernel.org> MIME-Version: 1.0 X-Headers-End: 1viCfJ-00085l-In Subject: [f2fs-dev] [PATCH v6 07/16] ext4: Report case sensitivity in fileattr_get X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Chuck Lever via Linux-f2fs-devel Reply-To: Chuck Lever Cc: pc@manguebit.org, yuezhang.mo@sony.com, cem@kernel.org, almaz.alexandrovich@paragon-software.com, adilger.kernel@dilger.ca, linux-cifs@vger.kernel.org, sfrench@samba.org, slava@dubeyko.com, linux-ext4@vger.kernel.org, linkinjeon@kernel.org, sprasad@microsoft.com, frank.li@vivo.com, ronniesahlberg@gmail.com, glaubitz@physik.fu-berlin.de, jaegeuk@kernel.org, hirofumi@mail.parknet.co.jp, linux-nfs@vger.kernel.org, tytso@mit.edu, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, senozhatsky@chromium.org, Chuck Lever , hansg@kernel.org, anna@kernel.org, linux-fsdevel@vger.kernel.org, sj1557.seo@samsung.com, trondmy@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Chuck Lever Report ext4's case sensitivity behavior via the FS_XFLAG_CASEFOLD flag. ext4 always preserves case at rest. Case sensitivity is a per-directory setting in ext4. If the queried inode is a casefolded directory, report case-insensitive; otherwise report case-sensitive (standard POSIX behavior). Reviewed-by: Jan Kara Signed-off-by: Chuck Lever --- fs/ext4/ioctl.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 7ce0fc40aec2..462da7aadc80 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -996,6 +996,13 @@ int ext4_fileattr_get(struct dentry *dentry, struct file_kattr *fa) if (ext4_has_feature_project(inode->i_sb)) fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); + /* + * Case folding is a directory attribute in ext4. Set FS_XFLAG_CASEFOLD + * for directories with the casefold attribute; all other inodes use + * standard case-sensitive semantics. + */ + if (IS_CASEFOLDED(inode)) + fa->fsx_xflags |= FS_XFLAG_CASEFOLD; return 0; } -- 2.52.0 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel