qga: add windows implementation for guest-set-time
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index d98e3ee..24e4ad0 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -309,7 +309,34 @@
void qmp_guest_set_time(int64_t time_ns, Error **errp)
{
- error_set(errp, QERR_UNSUPPORTED);
+ SYSTEMTIME ts;
+ FILETIME tf;
+ LONGLONG time;
+
+ if (time_ns < 0 || time_ns / 100 > INT64_MAX - W32_FT_OFFSET) {
+ error_setg(errp, "Time %" PRId64 "is invalid", time_ns);
+ return;
+ }
+
+ time = time_ns / 100 + W32_FT_OFFSET;
+
+ tf.dwLowDateTime = (DWORD) time;
+ tf.dwHighDateTime = (DWORD) (time >> 32);
+
+ if (!FileTimeToSystemTime(&tf, &ts)) {
+ error_setg(errp, "Failed to convert system time %d", (int)GetLastError());
+ return;
+ }
+
+ acquire_privilege(SE_SYSTEMTIME_NAME, errp);
+ if (error_is_set(errp)) {
+ return;
+ }
+
+ if (!SetSystemTime(&ts)) {
+ error_setg(errp, "Failed to set time to guest: %d", (int)GetLastError());
+ return;
+ }
}
GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
