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local: check offset sanity before accumulation

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Don't accept an offset that points to time before 1970 or outside the
interval to which is mapped NTP time.
This commit is contained in:
Miroslav Lichvar
2015-04-07 14:58:58 +02:00
parent 183a648d01
commit aec97397e8
8 changed files with 77 additions and 13 deletions
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6
rtc_linux.c
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@@ -1043,9 +1043,9 @@ RTC_Linux_TimePreInit(void)
/* Set system time only if the step is larger than 1 second */
if (fabs(sys_offset) >= 1.0) {
LOG(LOGS_INFO, LOGF_RtcLinux, "Set system time, error in RTC = %f",
accumulated_error);
LCL_ApplyStepOffset(sys_offset);
if (LCL_ApplyStepOffset(sys_offset))
LOG(LOGS_INFO, LOGF_RtcLinux, "Set system time, error in RTC = %f",
accumulated_error);
}
} else {
LOG(LOGS_WARN, LOGF_RtcLinux, "Could not convert RTC reading to seconds since 1/1/1970");