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ntp: limit offset correction to supported NTP interval

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When an NTP source is specified with the offset option, the corrected
offset may get outside of the supported NTP interval (by default -50..86
years around the build date). If the source passed the source selection,
the offset would be rejected only later in the adjustment of the local
clock.

Check the offset validity as part of the NTP test A to make the source
unselectable and make it visible in the measurements log and ntpdata
report.
This commit is contained in:
Miroslav Lichvar
2024-05-02 14:23:08 +02:00
parent adaca0ff19
commit ebfc676d74
3 changed files with 5 additions and 4 deletions
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4
doc/chrony.conf.adoc
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@@ -2179,8 +2179,8 @@ from the example line above):
. Results of the *maxdelay*, *maxdelayratio*, and *maxdelaydevratio* (or
*maxdelayquant*) tests, and a test for synchronisation loop (1=pass,
0=fail). The first test from these four also checks the server precision,
response time, and whether an interleaved response is acceptable for
synchronisation. [1111]
response time, validity of the measured offset, and whether an interleaved
response is acceptable for synchronisation. [1111]
. Local poll [10]
. Remote poll [10]
. '`Score`' (an internal score within each polling level used to decide when to