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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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4
reference.c
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@@ -1051,8 +1051,8 @@ REF_SetReference(int stratum,
maybe_log_offset(our_offset, raw_now.tv_sec);
if (step_offset != 0.0) {
LCL_ApplyStepOffset(step_offset);
LOG(LOGS_WARN, LOGF_Reference, "System clock was stepped by %.6f seconds", -step_offset);
if (LCL_ApplyStepOffset(step_offset))
LOG(LOGS_WARN, LOGF_Reference, "System clock was stepped by %.6f seconds", -step_offset);
}
LCL_SetSyncStatus(are_we_synchronised, offset_sd, offset_sd + root_delay / 2.0 + root_dispersion);