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 C971F13FD61; Tue, 23 Apr 2024 11:41:03 +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=1713872463; cv=none; b=Yca/EIZmXLrsPwZH1oQIeNoxRrXvQ9sMWorSyJ2QQbhsB9T25VsjeoGOpMT5/UMAy0dhiBhg30tHjYmNtN2Z4HYhlkxZ/U6QYS6Dm4lVayxFiPMLhmLuWydJAiBn6kuuI8NSTp54HLcLgsoXZACndLkOp8RZNciYMKhB+bx+vHg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713872463; c=relaxed/simple; bh=RtleWkbbY+Os9CWeeebkpemyAVsN7UYp4fK2i35g3lQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XNyvDJx9N2k3C8sacHEzikiAFvo6ZPZxtJYESURF3BkV8Po5GL+EUEhOf4Vj9ZZTw1lSv9Rgnu5S3lzudf8bt5995AWIInXd4xTObmF/t08wAGHsxWsZiyCi4i21NVYpNHjt0JY1ULb6+xAoBYhXMY6yxtjucHciaX4mVXXwHeE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Mg9/a2ZA; 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="Mg9/a2ZA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C375C2BD11; Tue, 23 Apr 2024 11:41:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713872463; bh=RtleWkbbY+Os9CWeeebkpemyAVsN7UYp4fK2i35g3lQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Mg9/a2ZA4IxO1oWiRpVoi74eVAVE8XAZOnjDoGilZpzqKRdR+N8ZLxe/lRNnLhvp0 Rqo1pDMRujtCfBo0To5AdRkoye8WYuS0YlIUgDDZQe8xSrEA4WIzP4JHVufTlWHqei uzTtt/vHPYGiOR7VhU9mYbN+lU6UEGpeQ9wFK2uBFuQ8D8u33jjjjlE6hPfsuuU0Gl wU1jt0QR7tmQwjgjARZf6mxJtq4hqgEUqHOvfXfVLvgIIHKiEbi0jg5+Og7b9SuwM/ w+WxuwwQlCjnC6nXOzD1bWXUGKM1uTNGi2+jYFTANeaSuZI9Gy2MjPSky2IP1bqQF0 SFCi8fq5OaXYw== 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 6.1 3/9] 9p: explicitly deny setlease attempts Date: Tue, 23 Apr 2024 07:02:09 -0400 Message-ID: <20240423110217.1658879-3-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240423110217.1658879-1-sashal@kernel.org> References: <20240423110217.1658879-1-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 6.1.87 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 aec43ba837992..87222067fe5de 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -667,6 +667,7 @@ const struct file_operations v9fs_file_operations = { .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .fsync = v9fs_file_fsync, + .setlease = simple_nosetlease, }; const struct file_operations v9fs_file_operations_dotl = { @@ -708,4 +709,5 @@ const struct file_operations v9fs_mmap_file_operations_dotl = { .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .fsync = v9fs_file_fsync_dotl, + .setlease = simple_nosetlease, }; -- 2.43.0