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Author SHA1 Message Date
Miroslav Lichvar
4e26f48781 manual: check offset sanity 2015-04-07 15:23:47 +02:00
Miroslav Lichvar
aec97397e8 local: check offset sanity before accumulation 
Don't accept an offset that points to time before 1970 or outside the
interval to which is mapped NTP time.
 2015-04-07 15:23:47 +02:00
Miroslav Lichvar
183a648d01 local: clamp frequency offset 
Don't allow frequency offset larger than 50%, the tracked time must not
stop or run backwards.
 2015-04-07 14:13:41 +02:00
Miroslav Lichvar
27f8ad7fd1 cmdmon: fix handling of client access command 
Rework the loop to limit the number of iterations to MAX_CLIENT_ACCESSES
and not waste CPU.
 2015-04-07 14:07:40 +02:00
Miroslav Lichvar
a79fbef21e ntp: set maximum allowed polling interval 
To have an upper bound don't allow polling interval be larger than 24
(194 days).
 2015-04-07 14:06:53 +02:00
Miroslav Lichvar
565976acbe doc: document smoothtime directive 2015-04-07 12:38:37 +02:00
Miroslav Lichvar
857d51ea8e test: extend 113-leapsecond for leap smear 2015-04-07 10:51:07 +02:00
Miroslav Lichvar
ba85544611 ntp: smear leap second with slewing mode and smoothing 
Suppress leap second in packets sent to clients when smoothing and leap
second slew mode are enabled.
 2015-04-07 10:45:32 +02:00
Miroslav Lichvar
293806d52d test: add 119-smoothtime 2015-04-07 10:42:32 +02:00
Miroslav Lichvar
7f45eb7957 ntp: add server time smoothing 
Time smoothing determines an offset that needs to be applied to the
cooked time to make it smooth for external observers. Observed offset
and frequency change slowly and there are no discontinuities. This can
be used on an NTP server to make it easier for the clients to track the
time and keep their clocks close together even when large offset or
frequency corrections are applied to the server's clock (e.g. after
being offline for longer time).

Accumulated offset and frequency are smoothed out in three stages. In
the first stage, the frequency is changed at a constant rate (wander) up
to a maximum, in the second stage the frequency stays at the maximum for
as long as needed and in the third stage the frequency is brought back
to zero.

Time smoothing is configured by the smoothtime directive. It takes two
arguments, maximum frequency offset and maximum wander. It's disabled by
default.
 2015-04-07 10:42:26 +02:00
Miroslav Lichvar
78283dd822 test: fix source selection check 
The chronyd log message changed from "no reachable sources" to "no
selectable sources" in 8f062454.
 2015-04-02 16:43:25 +02:00
Miroslav Lichvar
bbdf708d1a reference: update our reference time on slew 2015-03-31 11:51:03 +02:00
Miroslav Lichvar
08195d7e41 sourcestats: fix updating of slope on slew with large residual freq 2015-03-27 10:37:55 +01:00
Miroslav Lichvar
9ff0dbb7a4 test: make 009-sourceselection more reliable 2015-03-27 10:37:55 +01:00
Miroslav Lichvar
6ba97f9161 test: add 118-maxdelay 2015-03-27 10:37:55 +01:00
Miroslav Lichvar
4eca60e7dc test: add 117-fallbackdrift 2015-03-27 10:37:55 +01:00
Miroslav Lichvar
2af6f8cf78 reference: schedule fallback drift even when synchronized 
After update to NTPv4 the synchronized status doesn't change when
sources are unreachable, start fallbackdrift timeout on reference update
too.
 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
d9a84d24cf reference: don't limit fallback drift offset 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
09ce631e21 reference: fix initial fallback drift setting 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
f93f2a15af ntp: check also reference timestamp in test3 
Zero reference timestamp doesn't pass test7, but only before we reach
the next NTP era.
 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
47839b7701 cmdmon: remove obsolete request/reply in candm.h 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
41e99afe54 cmdmon: fix noselect flag setting in source data 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
80af04040a ntp: change default maxdelay to 3 seconds 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
3caa1e2f71 doc: document leapsecmode directive 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
ddbbe30b9e test: extend 113-leapsecond to test new leap modes 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
802a98e7fc reference: use step leap mode by default if system is not supported 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
bb21841659 reference: update leap status right after leap second 
Don't wait for the next update, there may not be any before the end of
the day.
 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
3f9691baff reference: don't report synchronized status during leap second 
During inserted leap second the time is invalid, reply with
unsynchronized status to avoid confusing clients that are not smart
enough to ignore measurements close to leap second.
 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
f8db832491 reference: add new leap second handling modes 
In addition to the system driver handling add new modes to slew or step
the system clock for leap second, or ignore it completely. This can be
configured with leapsecmode directive.
 2015-03-27 10:37:48 +01:00
Miroslav Lichvar
c68a92ba80 sys: avoid syslog message when leap bits are not changed 
After leap second the kernel removes STA_INS and STA_DEL bits from the
adjtimex status automatically, don't report a change when clearing the
bits.
 2015-03-25 15:32:05 +01:00
Miroslav Lichvar
e5cf4645fe refclock: start refid numbering at zero 
Commit d92583ed inadvertently changed the refclock refid numbering to
start from 1 instead of 0. Restore the original numbering.
 2015-02-17 10:33:03 +01:00
Miroslav Lichvar
fad97e12da ntp: fix maxdelayratio test 
This was broken in commit 8fbfe55e.
 2015-01-29 12:49:02 +01:00
Miroslav Lichvar
2f6152a580 test: require latest clknetsim 2015-01-28 09:09:08 +01:00
Miroslav Lichvar
7446da8c9b doc: update NEWS 2015-01-27 15:03:57 +01:00
Miroslav Lichvar
00eecd3a1d examples: add chrony.conf.example1 
This is a minimal example.
 2015-01-27 15:03:57 +01:00
Miroslav Lichvar
46a178cf48 examples: update configuration examples 2015-01-27 15:03:57 +01:00
Miroslav Lichvar
ddcc28f726 examples: rename chrony.conf.example to chrony.conf.example3 
Order the examples by complexity.
 2015-01-27 15:03:57 +01:00
Miroslav Lichvar
04f86aa2ff doc: update chrony.conf man page 2015-01-27 15:03:57 +01:00
Miroslav Lichvar
72f0f99ac3 doc: update chrony.texi 2015-01-27 14:52:32 +01:00
Miroslav Lichvar
c8fe0fe992 test: add compilation test 
Check if chrony can be compiled in various combination of disabled
features. This should fail if there are missing functions in stubs.c.
 2015-01-26 12:16:17 +01:00
Miroslav Lichvar
be5c3b0b90 clientlog: remove unused code 2015-01-26 11:38:02 +01:00
Miroslav Lichvar
5194101c8b cmdmon: bind to loopback interface by default 2015-01-26 10:40:15 +01:00
Miroslav Lichvar
0ee27c6ef6 cmdmon: use system values for loopback addresses 2015-01-26 10:40:15 +01:00
Miroslav Lichvar
46a0aab6b9 test: require latest clknetsim 2015-01-26 10:40:15 +01:00
Miroslav Lichvar
55fb7abc39 contrib: remove DNSchrony from distribution 
With the new pool directive chronyd is now able to replace unreachable
NTP servers with newly resolved addresses automatically. Starting
without DNS wasn't a problem since 1.25.
 2015-01-26 10:39:58 +01:00
Miroslav Lichvar
407e47b306 ntp: remove unnecessary check in read_from_socket() 2015-01-22 15:38:41 +01:00
Miroslav Lichvar
4e54770f18 create NTP and cmdmon sockets after root drop 
This is now possible as we keep the cap_net_bind_service capability.
 2015-01-22 15:38:39 +01:00
Miroslav Lichvar
f9a31f36a0 ntp: keep all length constants signed 
This should make it harder to accidentally create an unsafe comparison
between signed and unsigned values.
 2015-01-22 14:37:35 +01:00
Miroslav Lichvar
547272e66c ntp: use different value for invalid socket in ntp_core 
This should make it easier to see invalid sockets leaking from ntp_core
to ntp_io.
 2015-01-07 16:14:29 +01:00
Miroslav Lichvar
35e11ffe60 ntp: fix length check of NTPv4 extension fields 
Don't allow extension fields shorter than 16 bytes.
 2015-01-07 14:12:29 +01:00