efi_loader: handling of daylight saving time
If SetTime() is meant to set daylight saving time it will be called with
Time.Daylight == EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT.
Return 0 from GetTime() if time is not in daylight because we cannot
determine if we are in a time zone with daylight saving time.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 2082d13..98ab4de 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -195,9 +195,9 @@
time->hour = tm.tm_hour;
time->minute = tm.tm_min;
time->second = tm.tm_sec;
- time->daylight = EFI_TIME_ADJUST_DAYLIGHT;
- if (tm.tm_isdst > 0)
- time->daylight |= EFI_TIME_IN_DAYLIGHT;
+ if (tm.tm_isdst)
+ time->daylight =
+ EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT;
time->timezone = EFI_UNSPECIFIED_TIMEZONE;
if (capabilities) {
@@ -276,7 +276,8 @@
tm.tm_hour = time->hour;
tm.tm_min = time->minute;
tm.tm_sec = time->second;
- tm.tm_isdst = time->daylight == EFI_TIME_IN_DAYLIGHT;
+ tm.tm_isdst = time->daylight ==
+ (EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT);
/* Calculate day of week */
rtc_calc_weekday(&tm);