From mboxrd@z Thu Jan 1 00:00:00 1970 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 DD4291494B1; Tue, 23 Apr 2024 11:41:50 +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=1713872511; cv=none; b=PmtJgFih2C8pVgH9gpS4cWKsQ50htJRU9I2K55aS4xI33Bhtzwe9C67yFgFSBrPxjDx9oIyba9bSSs79FGQKxc9zVH8qcuQcIApAU/XHKU5TJ4S+4KgyN21vnltE1aUS/4Gli1Swd7hmpFQCknF/o7/7UI4Q5desTwKyHZJM46U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713872511; c=relaxed/simple; bh=s3bgpOqEVPgxz+WTua/CVDLsS7TiwNKqMPEHlzHIwek=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Tr/aQJkg3tT2CiKnqWB990yR7cE45m3EHdn61XP+Q03rV29LM8VGIjfIy7DnUPDQXoKI3mo7TPpPqJgpPfueAJTlIHk4pAZkAdn43v7sq6adhSRxbpStlXaDrNpVzJAIWUSLsEqgePqBGyTkcMfuwL9EY2zIY5S/ZH5NHNoNtL4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Cw1Vu0a+; 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="Cw1Vu0a+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D86D1C3277B; Tue, 23 Apr 2024 11:41:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713872510; bh=s3bgpOqEVPgxz+WTua/CVDLsS7TiwNKqMPEHlzHIwek=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Cw1Vu0a+dPKHObhlUx0UpEMDbFysjsvE+zmQweeQmhmuTiTjIgXxdZTNK9cKg5169 Sd5d/E/tJ1FFxwB5tyqay3af7hHuTy6aojBGzvaYSs47XS/R/R1qIHwxJZ44WNS8Y3 vWXWa7LzlZolArX+FDXTOqMERPxSLVQOJWr6wufRPPrORi6N8wdEZ5IrPmNukcdzZo NjTzaaYX+zNm3YgBA+lqE45fB2HfAHFNwTD4AXoVgXl4UKJ1otOGkNnFXLXFcKtGew 02JtxK726wj/7eUZZ+8cmyrNw/Dsmw0hxZKShxaj1cU5atAMEvOwJFrdvq6cjqUya7 qrslJp6EFIQHw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jeff Layton , Eric Van Hensbergen , Sasha Levin , lucho@ionkov.net, asmadeus@codewreck.org, v9fs@lists.linux.dev Subject: [PATCH AUTOSEL 5.4 3/8] 9p: explicitly deny setlease attempts Date: Tue, 23 Apr 2024 07:02:58 -0400 Message-ID: <20240423110304.1659456-3-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240423110304.1659456-1-sashal@kernel.org> References: <20240423110304.1659456-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.274 Content-Transfer-Encoding: 8bit From: Jeff Layton [ Upstream commit 7a84602297d36617dbdadeba55a2567031e5165b ] 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 Signed-off-by: Eric Van Hensbergen Signed-off-by: Sasha Levin --- fs/9p/vfs_file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index ee9cabac12041..14d6cb0316212 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -676,6 +676,7 @@ const struct file_operations v9fs_file_operations = { .lock = v9fs_file_lock, .mmap = generic_file_readonly_mmap, .fsync = v9fs_file_fsync, + .setlease = simple_nosetlease, }; const struct file_operations v9fs_file_operations_dotl = { @@ -711,4 +712,5 @@ const struct file_operations v9fs_mmap_file_operations_dotl = { .flock = v9fs_file_flock_dotl, .mmap = v9fs_mmap_file_mmap, .fsync = v9fs_file_fsync_dotl, + .setlease = simple_nosetlease, }; -- 2.43.0