From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752652AbbDERUz (ORCPT ); Sun, 5 Apr 2015 13:20:55 -0400 Received: from mail-wi0-f170.google.com ([209.85.212.170]:33745 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752290AbbDERUx (ORCPT ); Sun, 5 Apr 2015 13:20:53 -0400 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= To: Alasdair Kergon , Mike Snitzer , Neil Brown , "Rafael J. Wysocki" , Len Brown , Pavel Machek Cc: dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, =?UTF-8?q?Pali=20Roh=C3=A1r?= Subject: [PATCH 0/3] dm-crypt: Adds support for wiping key when doing suspend/hibernation Date: Sun, 5 Apr 2015 19:20:16 +0200 Message-Id: <1428254419-7334-1-git-send-email-pali.rohar@gmail.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series increase security of suspend and hibernate actions. It allows user to safely wipe crypto keys before suspend and hibernate actions starts without race conditions on userspace process with heavy I/O. To automatically wipe cryto key for before hibernate action call: $ dmsetup message 0 key wipe_on_hibernation 1 To automatically wipe cryto key for before suspend action call: $ dmsetup message 0 key wipe_on_suspend 1 (Value 0 after wipe_* string reverts original behaviour - to not wipe key) Pali Rohár (3): PM suspend/hibernate: Call notifier after freezing processes dm: Export function dm_suspend_md() dm-crypt: Adds support for wiping key when doing suspend/hibernation drivers/md/dm-crypt.c | 109 +++++++++++++++++++++++++++++++++++++++++++--- drivers/md/dm.c | 6 +++ drivers/md/dm.h | 5 +++ include/linux/suspend.h | 2 + kernel/power/hibernate.c | 2 + kernel/power/suspend.c | 4 +- 6 files changed, 120 insertions(+), 8 deletions(-) -- 1.7.9.5