diff options
Diffstat (limited to 'src/core/main.c')
| -rw-r--r-- | src/core/main.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/src/core/main.c b/src/core/main.c index 29f97364a4..f67c003941 100644 --- a/src/core/main.c +++ b/src/core/main.c @@ -1358,7 +1358,14 @@ int main(int argc, char *argv[]) { if (clock_is_localtime() > 0) { int min; - /* The first-time call to settimeofday() does a time warp in the kernel */ + /* + * The very first call of settimeofday() also does a time warp in the kernel. + * + * In the rtc-in-local time mode, we set the kernel's timezone, and rely on + * external tools to take care of maintaining the RTC and do all adjustments. + * This matches the behavior of Windows, which leaves the RTC alone if the + * registry tells that the RTC runs in UTC. + */ r = clock_set_timezone(&min); if (r < 0) log_error("Failed to apply local time delta, ignoring: %s", strerror(-r)); @@ -1366,19 +1373,19 @@ int main(int argc, char *argv[]) { log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min); } else if (!in_initrd()) { /* - * Do dummy first-time call to seal the kernel's time warp magic + * Do a dummy very first call to seal the kernel's time warp magic. * * Do not call this this from inside the initrd. The initrd might not * carry /etc/adjtime with LOCAL, but the real system could be set up * that way. In such case, we need to delay the time-warp or the sealing * until we reach the real system. + * + * Do no set the kernel's timezone. The concept of local time cannot + * be supported reliably, the time will jump or be incorrect at every daylight + * saving time change. All kernel local time concepts will be treated + * as UTC that way. */ - clock_reset_timezone(); - - /* Tell the kernel our timezone */ - r = clock_set_timezone(NULL); - if (r < 0) - log_error("Failed to set the kernel's timezone, ignoring: %s", strerror(-r)); + clock_reset_timewarp(); } } |