Context *c = userdata;
int64_t utc;
struct timespec ts;
+ usec_t start;
struct tm* tm;
int r;
if (c->use_ntp)
return sd_bus_error_setf(error, BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, "Automatic time synchronization is enabled");
+ /* this only gets used if dbus does not provide a timestamp */
+ start = now(CLOCK_MONOTONIC);
+
r = sd_bus_message_read(m, "xbb", &utc, &relative, &interactive);
if (r < 0)
return r;
if (r == 0)
return 1;
+ /* adjust ts for time spent in program */
+ r = sd_bus_message_get_monotonic_usec(m, &start);
+ /* when sd_bus_message_get_monotonic_usec() returns -ENODATA it does not modify &start */
+ if (r < 0 && r != -ENODATA)
+ return r;
+
+ timespec_store(&ts, timespec_load(&ts) + (now(CLOCK_MONOTONIC) - start));
+
/* Set system clock */
if (clock_settime(CLOCK_REALTIME, &ts) < 0) {
log_error_errno(errno, "Failed to set local time: %m");
if (r < 0)
goto finish;
+ (void)sd_bus_negotiate_timestamp(bus, true);
+
r = context_read_data(&context);
if (r < 0) {
log_error_errno(r, "Failed to read time zone data: %m");