[libvirt] [PATCH 4/5] qemuDomainResumeFlags: Introduce VIR_DOMAIN_RESUME_SYNC_TIME

[Michal Privoznik]

This flag can be used to sync the domain's time right after
domain CPUs are started. It's basically backing call of two
subsequent APIs into one:

1) virDomainResume(dom)
2) virDomainSetTime(dom, 0, 0, VIR_DOMAIN_TIME_SYNC)

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 include/libvirt/libvirt-domain.h | 4 ++++
 src/qemu/qemu_driver.c           | 7 ++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index 1795dd3..8d763c7 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -867,6 +867,10 @@ int                     virDomainFree           (virDomainPtr domain);
 /*
  * Domain suspend/resume
  */
+typedef enum {
+    VIR_DOMAIN_RESUME_SYNC_TIME = 1 << 0,   /* on resume sync domain time from its RTC */
+} virDomainResumeFlagsValues;
+
 int                     virDomainSuspend        (virDomainPtr domain);
 int                     virDomainResume         (virDomainPtr domain);
 int                     virDomainResumeFlags    (virDomainPtr domain,
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 903ca5d..38926c4 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -1933,7 +1933,7 @@ qemuDomainResumeFlags(virDomainPtr dom,
     virQEMUDriverConfigPtr cfg = NULL;
     virCapsPtr caps = NULL;
 
-    virCheckFlags(0, -1);
+    virCheckFlags(VIR_DOMAIN_RESUME_SYNC_TIME, -1);
 
     if (!(vm = qemuDomObjFromDomain(dom)))
         return -1;
@@ -1974,6 +1974,11 @@ qemuDomainResumeFlags(virDomainPtr dom,
         goto endjob;
     if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0)
         goto endjob;
+
+    if (flags & VIR_DOMAIN_RESUME_SYNC_TIME &&
+        qemuDomainSetTimeImpl(driver, vm, 0, 0, true) < 0)
+        goto endjob;
+
     ret = 0;
 
  endjob:
-- 
2.0.4