From 115df6f1af337688e16d6ec43eb62ea34610506b Mon Sep 17 00:00:00 2001
From: Joanna Rutkowska <joanna@invisiblethingslab.com>
Date: Tue, 6 Jul 2010 16:22:34 +0200
Subject: [PATCH] Dom0: sync wallclocks in all vms upon resume from S3 sleep

This is really a workaround, until Xen implements proper suspend/resume
mechanism for notfying DomUs about system-wide S3 sleep.

See this thread for more details:

http://lists.xensource.com/archives/html/xen-devel/2010-07/msg00037.html
---
 dom0/pm-utils/01qubes-sync-vms-clock | 15 +++++++++++++++
 rpm_spec/core-dom0.spec              |  5 +++++
 2 files changed, 20 insertions(+)
 create mode 100755 dom0/pm-utils/01qubes-sync-vms-clock

diff --git a/dom0/pm-utils/01qubes-sync-vms-clock b/dom0/pm-utils/01qubes-sync-vms-clock
new file mode 100755
index 00000000..47e7c593
--- /dev/null
+++ b/dom0/pm-utils/01qubes-sync-vms-clock
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+. "${PM_FUNCTIONS}"
+
+sync_qubes_vms_wallclock()
+{
+DATE=$(date)
+echo "Syncing VMs clock to: $DATE"
+qvm-run --all -u root "date -s \"$DATE\""
+}
+
+case "$1" in
+        thaw|resume) sync_qubes_vms_wallclock ;;
+        *) exit 0 ;;
+esac
diff --git a/rpm_spec/core-dom0.spec b/rpm_spec/core-dom0.spec
index ed1ca802..3578dfa6 100644
--- a/rpm_spec/core-dom0.spec
+++ b/rpm_spec/core-dom0.spec
@@ -94,6 +94,10 @@ mkdir -p $RPM_BUILD_ROOT/etc/NetworkManager/dispatcher.d/
 cp ../common/qubes_nmhook $RPM_BUILD_ROOT/etc/NetworkManager/dispatcher.d/
 mkdir -p $RPM_BUILD_ROOT/etc/sysconfig
 cp init.d/iptables $RPM_BUILD_ROOT/etc/sysconfig
+
+mkdir -p $RPM_BUILD_ROOT/usr/lib64/pm-utils/sleep.d
+cp pm-utils/01qubes-sync-vms-clock $RPM_BUILD_ROOT/usr/lib64/pm-utils/sleep.d/
+
 %post
 
 if [ "$1" !=  1 ] ; then
@@ -190,3 +194,4 @@ fi
 /etc/dhclient.d/qubes_setup_dnat_to_ns.sh
 /etc/NetworkManager/dispatcher.d/qubes_nmhook
 /etc/sysconfig/iptables
+/usr/lib64/pm-utils/sleep.d/01qubes-sync-vms-clock