Re: [libvirt] [PATCH v1 1/4] Introduce virDomain{Get,Set}Time APIs

These APIs allow users to get or set time in a domain, which may come handy if the domain has been resumed just recently and NTP is not configured or hasn't kicked in yet and the guest is running something time critical. In addition, NTP may refuse to re-set the clock if the skew is too big. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- include/libvirt/libvirt.h.in | 13 +++++++ src/driver.h | 13 +++++++ src/libvirt.c | 91 ++++++++++++++++++++++++++++++++++++++++++++ src/libvirt_public.syms | 6 +++ 4 files changed, 123 insertions(+)

diff --git a/src/libvirt.c b/src/libvirt.c index 666ab1e..aa063fd 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -20547,3 +20547,94 @@ error: virDispatchError(dom->conn); return -1; } + + +/** + * virDomainGetTime: + * @dom: a domain object + * @time: where to store the domain's time + * @flags: extra flags, not used yet, so callers should always pass 0 + * + * Get the information about guest time relative to the Epoch of + * 1970-01-01 in UTC. The returned time is in seconds. + * + * Please note that some hypoervisors may require guest agent to + * be configured and running in order to be able to run this API. + * + * Returns 0 on success, -1 otherwise. + */ +int +virDomainGetTime(virDomainPtr dom, + long long *time, + unsigned int flags) +{ + VIR_DOMAIN_DEBUG(dom, "time=%p, flags=%x", + time, flags); + + virResetLastError(); + + virCheckDomainReturn(dom, -1); + virCheckReadOnlyGoto(dom->conn->flags, error);