From patchwork Mon Feb 5 20:05:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kent Overstreet X-Patchwork-Id: 13546208 Received: from out-173.mta0.migadu.com (out-173.mta0.migadu.com [91.218.175.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0A1712A167 for ; Mon, 5 Feb 2024 20:06:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707163568; cv=none; b=AzlZPKCZq/XzKn6g8hphTNxU7NIw+HyA6bsTacTR3pHqhg1w4IRCVxp+20GiEJOGMErV4N3W8+RtPvGD4Y0j5LKn7oz0qOotZyviwlb5plRBr2zrwa86Vzk+ru5Cn0e1Mz93MgC9qOxBDDRNawL7Hh3IHf8X310u01a++TdXKRE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707163568; c=relaxed/simple; bh=ZzpfRJLNiDFRXBfUCaCz/ALUxgqYKP7yarQNXpLqifw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=oSJ9Xa52Db87CrNGfH+zfNjVUzU4IorNVFUetTjIPtkyE3YNONsoFSpy43OWzme/4EQJYm8+jVq4v9duV4l46Z78fqFlINGmd1ARYNXQKGkDSQySELMG5nc2sGQnKxyrAjeH2L122vhuWkZRc3oNtKYOtdkGKjHsSDqwdzG4V5Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=mxIalyj5; arc=none smtp.client-ip=91.218.175.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="mxIalyj5" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1707163563; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=y0S45WMR1qJRBOTa9Fq+vJw0l8t2/n0Fhw6eQ4IEkC0=; b=mxIalyj5f8L31oBRKlsLNd/rlDjR6y+USSkDnz53a0/c/mhd3QPBRyo5n/+BZ4dQNWYY3/ Jd+FxdxI3gXwetCA9FdGyqd63Sgqiyd6vcSFLH6R+qVp0TUFxI/wwWPD18xSmU57AqLWRY uK/PZfhJ10AFjXwWre9cYCKA9duawQM= From: Kent Overstreet To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org Cc: Kent Overstreet Subject: [PATCH 0/6] filesystem visibility ioctls Date: Mon, 5 Feb 2024 15:05:11 -0500 Message-ID: <20240205200529.546646-1-kent.overstreet@linux.dev> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Hi all, this patchset adds a few new ioctls to standardize a few interfaces we want - get/set UUID - get sysfs path The get/set UUID ioctls are lifted versions of the ext4 ioctls with one difference, killing the flexible array member - we'll never have UUIDs more than 16 bytes, and getting rid of the flexible array member makes them easier to use. FS_IOC_GETSYSFSNAME is new, but it addresses something that we've been doing in fs specific code for awhile - "given a path on a mounted filesystem, tell me where it lives in sysfs". Cheers, Kent Kent Overstreet (6): fs: super_block->s_uuid_len fs: FS_IOC_GETUUID fat: Hook up sb->s_uuid fs: FS_IOC_GETSYSFSNAME xfs: add support for FS_IOC_GETSYSFSNAME bcachefs: add support for FS_IOC_GETSYSFSNAME fs/bcachefs/fs.c | 1 + fs/fat/inode.c | 4 ++++ fs/ioctl.c | 33 +++++++++++++++++++++++++++++++++ fs/super.c | 1 + fs/xfs/xfs_mount.c | 2 ++ include/linux/fs.h | 2 ++ include/uapi/linux/fs.h | 21 +++++++++++++++++++++ 7 files changed, 64 insertions(+)