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 452CE145B3A; Tue, 23 Apr 2024 11:41:35 +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=1713872495; cv=none; b=nTKYIjgrngmKORf948BRUaICHFIWZfCkp27IC/vveARyZN1oaDiixyHN2pdqFhP2nH7/dpY2uxYVGSX3VLgjAi5jh+VFHs4bnHvCICx6DdqkMFApVqOv1z92MMcO+MIo/fmW4WHfUfi/5NadV01byHYL0k8iKZrt+PmVJJQkrKw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713872495; c=relaxed/simple; bh=VE4wcJTbyxXeQUs7x/VihBeQ43jxTlnj1Q0QvS/i3P0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QZvtrqS6i3IH4erX1HB1IB4JTnRbzHkpEl9I8xhL6WPPsJ67+Nwj9oPxMJIDuxjprg/KCsp77CVVc0/Up5gXXew9raeCN2Ei8Sm/NY6tiIwJsQzbKvX2wCuMsYXtCFRj3xDFSrrSJboInXcbyY1JABVfaQRSqlxe3p1TUduF7hc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VUDTgF/6; 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="VUDTgF/6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CB83C32783; Tue, 23 Apr 2024 11:41:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713872495; bh=VE4wcJTbyxXeQUs7x/VihBeQ43jxTlnj1Q0QvS/i3P0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VUDTgF/6Q3FO7qEK+4AZhOSP7b/pMhYtf7+bo/6XDwPSLF6Rg+1QF22UD7C/1wYbX 8CIT1EL8ymT5SOmdNMYULjkK/V47fjvRvFDF3Q0utWFZpO0hTiCtWkDwTWZPYC8XMs Jz771Ae0x1U3rpxEL0VTkTXID3V2GmF6oZ4eVxKVbJ3rxKbg6UY/oZfUeIzKI3gi3H tJCXi4He4Brl/oFtaFhlBnL/eQ6Jr9K/Rqnysp5KrjUAakRGX9e7bPjSbyo2T0BlZf luGYHESX30926Xl2RnRUYR/EhpfPuNeOmlEHX5pN+mHzM6v8xE0EtWdZown6Mzku8Z AkFNTt5l7yOHA== 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 5.10 3/9] 9p: explicitly deny setlease attempts Date: Tue, 23 Apr 2024 07:02:41 -0400 Message-ID: <20240423110249.1659263-3-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240423110249.1659263-1-sashal@kernel.org> References: <20240423110249.1659263-1-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 5.10.215 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 be5768949cb15..5d92eaeaebd91 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -685,6 +685,7 @@ 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 = { @@ -726,4 +727,5 @@ 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