From patchwork Tue Mar 19 16:34:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13596904 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B729313ACC; Tue, 19 Mar 2024 16:34:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710866088; cv=none; b=Bd81Pu7CEdJVHVZRCNghocgV0byb3/hBtfwpu9JZ9geO5ATxt9L5skkDqB6JZPGAWJlNdDwCi9hIkyPpCg6arJ3/pkYAs8MIR08h/S5xR13rsXDEeL/8LHV3CwNuBBHfTrfzOIfXcbMCVChSU3oJNNaSc2Nngtb/Xjs1ylJiOVQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710866088; c=relaxed/simple; bh=sWcrpcQ7SA215oarYW2cTrDgksU/Injyvl3jW9oqqF0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=lbrCkkV+3LCPTZQSODep+SpWdUmVF8SwrF7YhSgh2co5jABgF/7RjWpP6FWeQXxPgj64emP5rWN+BC7NYsnzl8+8Bsc0Qs0WBkffLdbacId7Up8+EN8Py6I5ZwF9JTaK4UvT370o9qEVMki2r60COqoQMzZ0gWl2UyFH3kn75Ug= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B3VV3E+E; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B3VV3E+E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8DEB3C433F1; Tue, 19 Mar 2024 16:34:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710866088; bh=sWcrpcQ7SA215oarYW2cTrDgksU/Injyvl3jW9oqqF0=; h=From:Date:Subject:To:Cc:From; b=B3VV3E+E6rCPFhQr++KfCfRo/HbfUXQUEe05clvlMeoH3yJDRhSM+lJmtDAFOSwh/ OgbWM5px5egmIZb6whE/3aO+HFflY8Oqecy7VgvBNGZEtZNNsvoNiZDYsv97Chweu7 nZZkpMi0VrLuG+/ZvyaM3/tBj3b6I5vFjY5Ts97sKZ10Azu6vMvyorOUeSng8I5F4o Ndzq/o6DbfYrIbOkprxWcFCMOIuJNNLuyw0Fhtzq/PI70daie79wsLPkHkTW5XLHKy AZl1yQs3tGAkq8ziok0IpW3JB9itZd02Rin5iVh5h5zYqUhJ8A0qtAlivVAqT2OehQ wABmUmUbCWlrw== From: Jeff Layton Date: Tue, 19 Mar 2024 12:34:45 -0400 Subject: [PATCH] 9p: explicitly deny setlease attempts Precedence: bulk X-Mailing-List: v9fs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240319-setlease-v1-1-8532bdd2b74a@kernel.org> X-B4-Tracking: v=1; b=H4sIAKS++WUC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIxMDY0NL3eLUkpzUxOJU3eRUY8O0JAtzc/MkAyWg8oKi1LTMCrBR0bG1tQA swUHSWgAAAA== To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck Cc: v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1165; i=jlayton@kernel.org; h=from:subject:message-id; bh=sWcrpcQ7SA215oarYW2cTrDgksU/Injyvl3jW9oqqF0=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBl+b6nqBqEx9lnOPjWB/2aQcCJxobhEnUDWaCQR wzZHtSfQZuJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZfm+pwAKCRAADmhBGVaC FaJqEAC9PNA8wJ0oiNV1JvvkQYYnoDcC8XMd5mxTHnh7uIfiXtH5ZwGDuZDlKkkeqkb3o+25Yhb 7ZiICO3zhHg+l/uiXKGpQH4cr3f/W50lMxe/qHGW9qKCE+BoXKpdl07FLYGxr6k6UlDKjhsq9hh STultKHcg3elPBdG07knAoDDZROLb/2gayvaKYk6uUypR+4aGbgsN+CsXDUUARJ/bdvhMouTN9f L+bKRu4hEbDToxNE/kh36921HT6Jw8yTvA9FMwH6kOYiJCfjMeiSYWribW9K00+fn9XtqlMZpRT Bt5KwAJvYWl2TJN0BjICxQjC9Ydygt77doc567ZrJ6PRsCs2xoa4VNxw9RTg0ffbZQFMeK3hO8d 4G0cHVY5aP4LztoZLJCjL+ul+B9D2Yy4Eq3UnFZFsEMdusjZsH6Fqb+cNTxq4yefMRD98zhgzDM V8WwUNFgFMtwglw+DNeMgtoyHttlTy2CooYyqFqCgMWnyW17cpaPajKzF/ILCNex7jC6c/6cMDR Xzzy75Eq2E04zK4g3TR0Rvng/re9SbC9yERqtQK5y4b2+XtArJBpm4Xccwe5L/LmWktUJb+bo0r nGuMFqWiM1uH2GIjCaLw1GKwramMF0jxqZ+b4mbWYZ4f4GsRpR7kjYPTqude2D1N7n4XjFPv4bE lNb0Q5QUxjZKUzA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 9p is a remote network protocol, and it doesn't support asynchronous notifications from the server. Ensure that we don't hand out any leases since we can't guarantee they'll be broken when a file's contents change. Signed-off-by: Jeff Layton --- fs/9p/vfs_file.c | 2 ++ 1 file changed, 2 insertions(+) --- base-commit: 0a7b0acecea273c8816f4f5b0e189989470404cf change-id: 20240319-setlease-ce31fb8777b0 Best regards, diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index abdbbaee5184..348cc90bf9c5 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -520,6 +520,7 @@ const struct file_operations v9fs_file_operations = { .splice_read = v9fs_file_splice_read, .splice_write = iter_file_splice_write, .fsync = v9fs_file_fsync, + .setlease = simple_nosetlease, }; const struct file_operations v9fs_file_operations_dotl = { @@ -534,4 +535,5 @@ const struct file_operations v9fs_file_operations_dotl = { .splice_read = v9fs_file_splice_read, .splice_write = iter_file_splice_write, .fsync = v9fs_file_fsync_dotl, + .setlease = simple_nosetlease, };