6 * Add support for Network Time Security (NTS) authentication
7 * Add support for AES-CMAC keys (AES128, AES256) with Nettle
8 * Add support for maxsamples of 1 for faster update with -q/-Q option
9 * Add -L option to limit log messages by severity
10 * Avoid replacing NTP sources with unreachable addresses
11 * Improve NTP loop test to prevent synchronisation to itself
12 * Update clock synchronisation status and leap status more frequently
13 * Update seccomp filter
14 * Add "add pool" command
15 * Add -N option and sourcename command to print original names of sources
16 * Add -a option to sources/sourcestats command to print unresolved sources
17 * Add reset command to drop all measurements
21 * Handle RTCs that don't support interrupts
22 * Respond to command requests with correct address on multihomed hosts
26 * Drop support for RIPEMD keys (RMD128, RMD160, RMD256, RMD320)
33 * Add support for more accurate reading of PHC on Linux 5.0
34 * Add support for hardware timestamping on interfaces with read-only
35 timestamping configuration
36 * Add support for memory locking and real-time priority on FreeBSD,
38 * Update seccomp filter to work on more architectures
39 * Validate refclock driver options
43 * Fix bindaddress directive on FreeBSD
44 * Fix transposition of hardware RX timestamp on Linux 4.13 and later
45 * Fix building on non-glibc systems
52 * Add filter option to server/pool/peer directive
53 * Add minsamples and maxsamples options to hwtimestamp directive
54 * Add support for faster frequency adjustments in Linux 4.19
55 * Change default pidfile to /var/run/chrony/chronyd.pid to allow
56 chronyd without root privileges to remove it on exit
57 * Disable sub-second polling intervals for distant NTP sources
58 * Extend range of supported sub-second polling intervals
59 * Get/set IPv4 destination/source address of NTP packets on FreeBSD
60 * Make burst options and command useful with short polling intervals
61 * Modify auto_offline option to activate when sending request failed
62 * Respond from interface that received NTP request if possible
63 * Add onoffline command to switch between online and offline state
64 according to current system network configuration
65 * Improve example NetworkManager dispatcher script
69 * Avoid waiting in Linux getrandom system call
70 * Fix PPS support on FreeBSD and NetBSD
77 * Add burst option to server/pool directive
78 * Add stratum and tai options to refclock directive
79 * Add support for Nettle crypto library
80 * Add workaround for missing kernel receive timestamps on Linux
81 * Wait for late hardware transmit timestamps
82 * Improve source selection with unreachable sources
83 * Improve protection against replay attacks on symmetric mode
84 * Allow PHC refclock to use socket in /var/run/chrony
85 * Add shutdown command to stop chronyd
86 * Simplify format of response to manual list command
87 * Improve handling of unknown responses in chronyc
91 * Respond to NTPv1 client requests with zero mode
92 * Fix -x option to not require CAP_SYS_TIME under non-root user
93 * Fix acquisitionport directive to work with privilege separation
94 * Fix handling of socket errors on Linux to avoid high CPU usage
95 * Fix chronyc to not get stuck in infinite loop after clock step
102 * Improve stability with NTP sources and reference clocks
103 * Improve stability with hardware timestamping
104 * Improve support for NTP interleaved modes
105 * Control frequency of system clock on macOS 10.13 and later
106 * Set TAI-UTC offset of system clock with leapsectz directive
107 * Minimise data in client requests to improve privacy
108 * Allow transmit-only hardware timestamping
109 * Add support for new timestamping options introduced in Linux 4.13
110 * Add root delay, root dispersion and maximum error to tracking log
111 * Add mindelay and asymmetry options to server/peer/pool directive
112 * Add extpps option to PHC refclock to timestamp external PPS signal
113 * Add pps option to refclock directive to treat any refclock as PPS
114 * Add width option to refclock directive to filter wrong pulse edges
115 * Add rxfilter option to hwtimestamp directive
116 * Add -x option to disable control of system clock
117 * Add -l option to log to specified file instead of syslog
118 * Allow multiple command-line options to be specified together
119 * Allow starting without root privileges with -Q option
120 * Update seccomp filter for new glibc versions
121 * Dump history on exit by default with dumpdir directive
122 * Use hardening compiler options by default
126 * Don't drop PHC samples with low-resolution system clock
127 * Ignore outliers in PHC tracking, RTC tracking, manual input
128 * Increase polling interval when peer is not responding
129 * Exit with error message when include directive fails
130 * Don't allow slash after hostname in allow/deny directive/command
131 * Try to connect to all addresses in chronyc before giving up
138 * Add support for precise cross timestamping of PHC on Linux
139 * Add minpoll, precision, nocrossts options to hwtimestamp directive
140 * Add rawmeasurements option to log directive and modify measurements
141 option to log only valid measurements from synchronised sources
142 * Allow sub-second polling interval with NTP sources
146 * Fix time smoothing in interleaved mode
153 * Add support for software and hardware timestamping on Linux
154 * Add support for client/server and symmetric interleaved modes
155 * Add support for MS-SNTP authentication in Samba
156 * Add support for truncated MACs in NTPv4 packets
157 * Estimate and correct for asymmetric network jitter
158 * Increase default minsamples and polltarget to improve stability
160 * Add maxjitter directive to limit source selection by jitter
161 * Add offset option to server/pool/peer directive
162 * Add maxlockage option to refclock directive
163 * Add -t option to chronyd to exit after specified time
164 * Add partial protection against replay attacks on symmetric mode
165 * Don't reset polling interval when switching sources to online state
166 * Allow rate limiting with very short intervals
167 * Improve maximum server throughput on Linux and NetBSD
168 * Remove dump files after start
169 * Add tab-completion to chronyc with libedit/readline
170 * Add ntpdata command to print details about NTP measurements
171 * Allow all source options to be set in add server/peer command
172 * Indicate truncated addresses/hostnames in chronyc output
173 * Print reference IDs as hexadecimal numbers to avoid confusion with
178 * Fix crash with disabled asynchronous name resolving
185 * Fix processing of kernel timestamps on non-Linux systems
186 * Fix crash with smoothtime directive
187 * Fix validation of refclock sample times
188 * Fix parsing of refclock directive
195 * Add orphan option to local directive for orphan mode compatible with ntpd
196 * Add distance option to local directive to set activation threshold
197 (1 second by default)
198 * Add maxdrift directive to set maximum allowed drift of system clock
199 * Try to replace NTP sources exceeding maximum distance
200 * Randomise source replacement to avoid getting stuck with bad sources
201 * Randomise selection of sources from pools on start
202 * Ignore reference timestamp as ntpd doesn't always set it correctly
203 * Modify tracking report to use same values as seen by NTP clients
204 * Add -c option to chronyc to write reports in CSV format
205 * Provide detailed manual pages
209 * Fix SOCK refclock to work correctly when not specified as last refclock
210 * Fix initstepslew and -q/-Q options to accept time from own NTP clients
211 * Fix authentication with keys using 512-bit hash functions
212 * Fix crash on exit when multiple signals are received
213 * Fix conversion of very small floating-point numbers in command packets
217 * Drop documentation in Texinfo format
224 * Add support for NTP and command response rate limiting
225 * Add support for dropping root privileges on Mac OS X, FreeBSD, Solaris
226 * Add require and trust options for source selection
227 * Enable logchange by default (1 second threshold)
228 * Set RTC on Mac OS X with rtcsync directive
229 * Allow binding to NTP port after dropping root privileges on NetBSD
230 * Drop CAP_NET_BIND_SERVICE capability on Linux when NTP port is disabled
231 * Resolve names in separate process when seccomp filter is enabled
232 * Replace old records in client log when memory limit is reached
233 * Don't reveal local time and synchronisation state in client packets
234 * Don't keep client sockets open for longer than necessary
235 * Ignore poll in KoD RATE packets as ntpd doesn't always set it correctly
236 * Warn when using keys shorter than 80 bits
237 * Add keygen command to generate random keys easily
238 * Add serverstats command to report NTP and command packet statistics
242 * Fix clock correction after making step on Mac OS X
243 * Fix building on Solaris
250 * Restrict authentication of NTP server/peer to specified key (CVE-2016-1567)
257 * Add support for configuration and monitoring over Unix domain socket
258 (accessible by root or chrony user when root privileges are dropped)
259 * Add support for system call filtering with seccomp on Linux (experimental)
260 * Add support for dropping root privileges on NetBSD
261 * Control frequency of system clock on FreeBSD, NetBSD, Solaris
262 * Add system leap second handling mode on FreeBSD, NetBSD, Solaris
263 * Add dynamic drift removal on Mac OS X
264 * Add support for setting real-time priority on Mac OS X
265 * Add maxdistance directive to limit source selection by root distance
266 (3 seconds by default)
267 * Add refresh command to get new addresses of NTP sources
268 * Allow wildcard patterns in include directive
269 * Restore time from driftfile with -s option if later than RTC time
270 * Add configure option to set default hwclockfile
271 * Add -d option to chronyc to enable debug messages
272 * Allow multiple addresses to be specified for chronyc with -h option
273 and reconnect when no valid reply is received
274 * Make check interval in waitsync command configurable
278 * Fix building on NetBSD, Solaris
279 * Restore time from driftfile with -s option if reading RTC failed
283 * Drop support for authentication with command key (run-time configuration
284 is now allowed only for local users that can access the Unix domain socket)
291 * Fix clock stepping by integer number of seconds on Linux
298 * Add support for Mac OS X
299 * Try to replace unreachable and falseticker servers/peers specified
300 by name like pool sources
301 * Add leaponly option to smoothtime directive to allow synchronised
302 leap smear between multiple servers
303 * Use specific reference ID when smoothing served time
304 * Add smoothing command to report time smoothing status
305 * Add smoothtime command to activate or reset time smoothing
309 * Fix crash in source selection with preferred sources
310 * Fix resetting of time smoothing
311 * Include packet precision in peer dispersion
312 * Fix crash in chronyc on invalid command syntax
319 * Update to NTP version 4 (RFC 5905)
320 * Add pool directive to specify pool of NTP servers
321 * Add leapsecmode directive to select how to correct clock for leap second
322 * Add smoothtime directive to smooth served time and enable leap smear
323 * Add minsources directive to set required number of selectable sources
324 * Add minsamples and maxsamples options for all sources
325 * Add tempcomp configuration with list of points
326 * Allow unlimited number of NTP sources, refclocks and keys
327 * Allow unreachable sources to remain selected
328 * Improve source selection
329 * Handle offline sources as unreachable
330 * Open NTP server port only when necessary (client access is allowed by
331 allow directive/command or peer/broadcast is configured)
332 * Change default bindcmdaddress to loopback address
333 * Change default maxdelay to 3 seconds
334 * Change default stratumweight to 0.001
335 * Update adjtimex synchronisation status
336 * Use system headers for adjtimex
337 * Check for memory allocation errors
338 * Reduce memory usage
339 * Add configure options to compile without NTP, cmdmon, refclock support
340 * Extend makestep command to set automatic clock stepping
344 * Add sanity checks for time and frequency offset
345 * Don't report synchronised status during leap second
346 * Don't combine reference clocks with close NTP sources
347 * Fix accepting requests from configured sources
348 * Fix initial fallback drift setting
350 New in version 1.31.1
351 =====================
355 * Protect authenticated symmetric NTP associations against DoS attacks
357 * Fix access configuration with subnet size indivisible by 4 (CVE-2015-1821)
358 * Fix initialization of reply slots for authenticated commands (CVE-2015-1822)
365 * Support operation in other NTP eras (next era begins in 2036),
366 NTP time is mapped to [-50, +86] years around build date by default
367 * Restore time from driftfile with -s when RTC is missing/unsupported
368 * Close connected client sockets when not waiting for reply
369 * Use one client socket with random port when acquisitionport is 0
370 * Use NTP packets instead of UDP echo for presend
371 * Don't adjust polling interval when sending fails
372 * Allow binding to addresses that don't exist yet
373 * Ignore measurements around leap second
374 * Improve detection of unexpected time jumps
375 * Include example of logrotate configuration, systemd services and
376 NetworkManager dispatcher script
380 * Reconnect client sockets for each request to follow changes
381 in network configuration automatically
382 * Restart timer when polling interval is changed on reset
389 * Add asynchronous name resolving with POSIX threads
390 * Add PTP hardware clock (PHC) refclock driver
391 * Add new generic clock driver to slew by adjusting frequency only
392 (without kernel PLL or adjtime) and use it on Linux
393 * Add rtcautotrim directive to trim RTC automatically
394 * Add hwclockfile directive to share RTC LOCAL/UTC setting with hwclock
395 * Add maxslewrate directive to set maximum allowed slew rate
396 * Add maxdispersion option for refclocks
397 * Add -q/-Q options to set clock/print offset once and exit
398 * Allow directives to be specified on chronyd command line
399 * Replace frequency scaling in Linux driver with retaining of tick
400 * Try to detect unexpected forward time jumps and reset state
401 * Exit with non-zero code when maxchange limit is reached
402 * Improve makestep to not start and stop slew unnecessarily
403 * Change default corrtimeratio to 3.0 to improve frequency accuracy
404 * Announce leap second only on last day of June and December
405 * Use separate connected client sockets for each NTP server
406 * Remove separate NTP implementation used for initstepslew
407 * Limit maximum minpoll set by KoD RATE to default maxpoll
408 * Don't send NTP requests with unknown key
409 * Print warning when source is added with unknown key
410 * Take leap second in PPS refclock from locked source
411 * Make reading of RTC for initial trim more reliable
412 * Don't create cmdmon sockets when cmdport is 0
413 * Add configure option to set default user to drop root privileges
414 * Add configure option to compile with debug messages
415 * Print debug messages when -d is used more than once
416 * Change format of messages written to terminal with -d
417 * Write fatal messages also to stderr with -n
418 * Use IP_RECVERR socket option in chronyc to not wait unnecessarily
419 * Shorten default chronyc timeout for localhost
420 * Change default hostname in chronyc from localhost to 127.0.0.1
421 * Print error message on invalid syntax with all chronyc commands
422 * Include simulation test suite using clknetsim
426 * Fix crash when selecting with multiple preferred sources
427 * Fix frequency calculation with large frequency offsets
428 * Fix code writing drift and RTC files to compile correctly
429 * Fix -4/-6 options in chronyc to not reset hostname set by -h
430 * Fix refclock sample validation with sub-second polling interval
431 * Set stratum correctly with non-PPS SOCK refclock and local stratum
432 * Modify dispersion accounting in refclocks to prevent PPS getting
433 stuck with large dispersion and not accepting new samples
435 New in version 1.29.1
436 =====================
440 * Modify chronyc protocol to prevent amplification attacks (CVE-2014-0021)
441 (incompatible with previous protocol version, chronyc supports both)
448 * Fix crash when processing crafted commands (CVE-2012-4502)
449 (possible with IP addresses allowed by cmdallow and localhost)
450 * Don't send uninitialized data in SUBNETS_ACCESSED and CLIENT_ACCESSES
451 replies (CVE-2012-4503) (not used by chronyc)
455 * Drop support for SUBNETS_ACCESSED and CLIENT_ACCESSES commands
460 * Combine sources to improve accuracy
461 * Make config and command parser strict
462 * Add -a option to chronyc to authenticate automatically
463 * Add -R option to ignore initstepslew and makestep directives
464 * Add generatecommandkey, minsamples, maxsamples and user directives
465 * Improve compatibility with NTPv1 and NTPv2 clients
466 * Create sockets only in selected family with -4/-6 option
467 * Treat address bind errors as non-fatal
468 * Extend tracking log
469 * Accept float values as initstepslew threshold
470 * Allow hostnames in offline, online and burst commands
471 * Fix and improve peer polling
472 * Fix crash in config parsing with too many servers
473 * Fix crash with duplicated initstepslew address
474 * Fix delta calculation with extreme frequency offsets
475 * Set local stratum correctly
476 * Remove unnecessary adjtimex calls
477 * Set paths in documentation by configure
483 * Support for stronger keys via NSS or libtomcrypt library
484 * Support reading leap second data from tz database
485 * Support for precise clock stepping on Linux
486 * Support for nanoseconds in SHM refclock
487 * Make offset corrections smoother on Linux
488 * Make transmit timestamps random below clock precision
489 * Add corrtimeratio and maxchange directives
490 * Extend tracking, sources and activity reports
491 * Wait in foreground process until daemon is fully initialized
492 * Fix crash with slow name resolving
493 * Fix iburst with jittery sources
494 * Fix offset stored in rtc data right after trimrtc
495 * Fix crash and hang with RTC or manual samples
496 * Don't use readonly adjtime on Linux kernels before 2.6.28
497 * Changed chronyc protocol, incompatible with older versions
502 * Add compatibility with Linux 3.0 and later
503 * Use proper source address in NTP replies on multihomed IPv6 hosts
504 * Accept NTP packets with versions 4, 3 and 2
505 * Cope with unexpected backward time jumps
506 * Don't reset kernel frequency on start without drift file
507 * Retry on permanent DNS error by default
508 * Add waitsync command
513 * Improve accuracy with NTP sources
514 * Improve accuracy with reference clocks
515 * Improve polling interval adjustment
516 * Improve stability with temporary asymmetric delays
517 * Improve source selection
518 * Improve initial synchronisation
519 * Add delayed server name resolving
520 * Add temperature compensation
521 * Add nanosecond slewing to Linux driver
522 * Add fallback drifts
523 * Add iburst, minstratum, maxdelaydevratio, polltarget,
524 prefer, noselect options
525 * Add rtcsync directive to enable Linux 11-minute mode
526 * Add reselectdist, stratumweight, logbanner, maxclockerror,
528 * Add -n option to not detach daemon from terminal
529 * Fix pidfile directive
530 * Fix name resolving with disabled IPv6 support
531 * Fix reloading sample histories with reference clocks
532 * Fix crash with auto_offline option
533 * Fix online command on auto_offline sources
534 * Fix file descriptor leaks
535 * Increase burst polling interval and stop on KoD RATE
536 * Set maxupdateskew to 1000 ppm by default
537 * Require password for clients command
538 * Update drift file at most once per hour
539 * Use system headers for Linux RTC support
540 * Reduce default chronyc timeout and make it configurable
541 * Avoid large values in chronyc sources and sourcestats output
542 * Add reselect command to force reselecting best source
543 * Add -m option to allow multiple commands on command line
550 * Don't reply to invalid cmdmon packets (CVE-2010-0292)
551 * Limit client log memory size (CVE-2010-0293)
552 * Limit rate of syslog messages (CVE-2010-0294)
554 Bug fixes/Enhancements
555 ----------------------
556 * Support for reference clocks (SHM, SOCK, PPS drivers)
558 * Linux capabilities support (to drop root privileges)
559 * Memory locking support on Linux
560 * Real-time scheduler support on Linux
561 * Leap second support on Linux
562 * Support for editline library
563 * Support for new Linux readonly adjtime
564 * NTP client support for KoD RATE
565 * Read kernel timestamps for received NTP packets
566 * Reply to NTP requests with correct address on multihomed hosts
567 * Retry name resolving after temporary failure
568 * Fix makestep command, make it available on all systems
569 * Add makestep directive for automatic clock stepping
570 * Don't require _bigadj kernel symbol on NetBSD
571 * Avoid blocking read in Linux RTC driver
572 * Support for Linux on S/390 and PowerPC
573 * Fix various bugs on 64-bit systems
574 * Fix valgrind errors and compiler warnings
575 * Improve configure to support common options and variables
576 * Improve status checking and printing in chronyc
577 * Return non-zero exit code on errors in chronyc
578 * Reduce request timeout in chronyc
579 * Print estimated offset in sourcestats
580 * Changed chronyc protocol, incompatible with older versions
585 * Support for MIPS, x86_64, sparc, alpha, arm, FreeBSD
586 * Fix serious sign-extension error in handling IP addresses
587 * RTC support can be excluded at compile time
588 * Make sources gcc-4 compatible
589 * Fix various compiler warnings
590 * Handle fluctuations in peer distance better.
591 * Fixed handling of stratum zero.
592 * Fix various problems for 64-bit systems
593 * Flush chronyc output streams after each command, to allow it to be driven
595 * Manpage improvements
600 This release number was claimed by a release that Mandriva made to patch
601 important bugs in 1.21. The official numbering has jumped to 1.23 as a
607 * Don't include Linux kernel header files any longer : allows chrony to compile
609 * Stop trying to use RTC if continuous streams of error messages would occur
615 * Many small tidy-ups and security improvements
616 * Improve documentation (RTC support in post 2.0 kernels)
617 * Remove trailing \n from syslog messages
618 * Syslog messages now include IP and port number when packet cannot be sent.
619 * Added the "acquisitionport" directive. (Kalle Olavi Niemitalo)
620 * Use uname(2) instead of /proc/version to get kernel version.
621 * Merge support for Linux on Alpha
622 * Merge support for 64bit architectures
623 * Don't link -lm if it's not needed
624 * Fix Solaris build (broken by 64bit change)
625 * Add detection of Linux 2.5
626 * Allow arbitrary value of HZ in Linux kernel
627 * Fix for chrony.spec on SuSE (Paul Elliot)
628 * Fix handling of initstepslew if no servers are listed (John Hasler)
629 * Fix install rule in Makefile if chronyd is in use (Juliusz Chroboczek)
630 * Replace sprintf by snprintf to remove risk of buffer overrun (John Hasler)
631 * Add --help to configure script
636 * Auto-detect kernel's timer interrupt rate (so-called 'HZ') when chronyd
637 starts instead of relying on compiled-in value.
638 * Fix 2 bugs in function that creates the directory for the log and dump files.
639 * Amended webpage URL and contact details.
640 * Generate more informative syslog messages before exiting on failed
642 * Fix bugs in clamping code for the tick value used when slewing a large
644 * Don't chown files to root during install (should be pointless, and makes RPM
645 building awkward as ordinary user.)
646 * Include chrony.spec file for building RPMs
650 * Amend homepage and mailing list information to chrony.sunsite.dk
651 * Delete pidfile on exit from chronyd.
652 * Improvements to readline interface to chronyc
653 * Only generate syslog message when synchronisation is initially lost (instead
654 of on every failed synchronisation attempt)
655 * Use double fork approach when initialising daemon.
656 * More things in contrib directory.
657 * New options to help package builders: --infodir/--mandir for configure, and
658 DESTDIR=xxx for make. (See section 2.2 of chrony.txt for details).
659 * Changed the wording of the messages generated by mailonchange and logchange
665 * Configuration supports Linux on PPC
666 * Fix compilation warnings
667 * Several documentation improvements
668 * Bundled manpages (taken from the 'missing manpages project')
669 * Cope with lack of bzero function for Solaris 2.3 systems
670 * Store chronyd's pid in a file (default /var/run/chronyd.pid) and check if
671 chronyd may already be running when starting up. New pidfile directive in
673 * Any size subnet is now allowed in allow and deny commands. (Example:
674 6.7.8/20 or 6.7.8.x/20 (any x) mean a 20 bit subnet).
675 * The environment variables CC and CFLAGS passed to configure can now be used
676 to select the compiler and optimisation/debug options to use
677 * Write syslog messages when chronyd loses synchronisation.
678 * Print GPL text when chronyc is run.
679 * Add NTP broadcast server capability (new broadcast directive).
680 * Add 'auto_offline' option to server/peer (conf file) or add server/peer (via
682 * Add 'activity' command to chronyc, to report how many servers/peers are
683 currently online/offline.
684 * Fix long-standing bug with how the system time quantum was calculated.
685 * Include support for systems with HZ!=100 (HZ is the timer interrupt
687 * Include example chrony.conf and chrony.keys files (examples subdirectory).
688 * Include support for readline in chronyc.
690 New in version 1.16.1
691 =====================
692 * Fix compilation problem on Linux 2.4.13 (spinlock.h / spinlock_t)
696 * More informative captions for 'sources' and 'sourcestats' commands in chronyc
697 (use 'sources -v' and 'sourcestats -v' to get them).
698 * Correct behaviour for Solaris versions>=2.6 (dosynctodr not required on these
700 * Remove some compiler warnings (Solaris)
701 * If last line of keys file doesn't have end-of-line, don't truncate final
702 character of that key.
703 * Change timestamp format used in logfiles to make it fully numeric (to aid
704 importing data into spreadsheets etc)
705 * Minor documentation updates and improvements.
709 * Add contributed change to 'configure' to support Solaris 2.8 on x86
710 * Workaround for assertion failure that arises if two received packets occur
711 close together. (Still need to find out why this happens at all.)
712 * Hopefully fix problem where fast slewing was incompatible with machines
713 that have a large background drift rate (=> tick value went out of range
714 for adjtimex() on Linux.)
715 * Fix rtc_linux.c compile problems with 2.4.x kernel include files.
716 * Include support for RTC device not being at /dev/rtc (new rtcdevice directive
717 in configuration file).
718 * Include support for restricting network interfaces for commands (new
719 bindcmdaddress directive in configuration file)
720 * Fix potential linking fault in pktlength.c (use of CROAK macro replaced by
722 * Add some material on bug reporting + contributing to the chrony.texi file
723 * Made the chrony.texi file "Vim6-friendly" (removed xrefs on @node lines,
724 added folding markers to chapters + sections.)
725 * Switched over to GPL for the licence
729 * Fix compilation for certain other Linux distributions (including Mandrake
734 * Fixed compilation problems on Redhat/SuSE installations with recent 2.2.x
736 * Minor tidy-ups and documentation enhancements.
737 * Add support for Linux 2.4 kernels
742 * Trial fix for long-standing bug in Linux RTC estimator when system time is
744 * Fix bug in chronyc if -h is specified without a hostname
745 * Fixes to logging various error conditions when operating in daemon mode.
746 * More stuff under contrib/
747 * Changes to README file (e.g. about the new chrony-users mailing list)
752 * Minor changes to contact details
753 * Minor changes to installation details (chrony subdirectory under doc/)
758 * Improve robustness of installation procedure
759 * Tidy up documenation and contact details
760 * Distribute manual as .txt rather than as .ps
761 * Add -n option to chronyc to work with numeric IP addresses rather than
763 * Add material in contrib subdirectory
764 * Improve robustness of handling drift file and RTC coefficients file
765 * Improve robustness of regression algorithm
773 * Made linear regression more resistant to rounding errors (old one
774 occasionally generated negative variances which made everything go
775 haywire). Trap infinite or 'not-a-number' values being used to
776 alter system clock to increase robustness further.
778 Other changes/Enhancements
779 --------------------------
781 * Support for Linux 2.1 and 2.2 kernels
783 * New command 'makestep' in chronyc to immediately jump the system
784 time to match the NTP estimated time (Linux only) - a response to
785 systems booting an hour wrong after summertime/wintertime changes,
786 due to RTCs running on local time. Needs extending to Sun driver
789 * New directives 'logchange' and 'mailonchange' to log to syslog or
790 email to a specific address respectively if chronyd detects a clock
791 offset exceeding a defined threshold.
793 * Added capability to log all client/peer NTP accesses and command
794 accesses (can be turned off with conf file directive 'noclientlog').
795 Added 'clients' command to chronyc to display this data.
797 * Improved manual mode to use robust regression rather than 2 point
800 * Added 'manual list' and 'manual delete' commands to chronyc to
801 allow display of entered timestamps and discretionary deletion of
804 * If host goes unsynchronised the dummy IP address 0.0.0.0 is detected
805 to avoid attempting a reverse name lookup (to stop dial on demand IP
806 links from being started)
808 * Changed chronyc/chronyd protocol so messages are now all variable
809 length. Saves on network bandwidth particularly for large replies
810 from chronyd to chronyc (to support the clients command).
812 * Added bindaddress directive to configuration file, to give
813 additional control over limiting which hosts can access the local
816 * Groundwork done for a port to Windows NT to compile with Cygwin
817 toolkit. chronyc works (to monitor another host). sys_winnt.c
818 needs finishing to use NT clock control API. Program structure
819 needs adapting to use Windows NT service functions, so it can be
820 started at boot time. Hopefully a Windows NT / Cygwin guru with
821 some spare time can take this port over :-)
829 * Fix error messages in chronyc if daemon is not reachable.
831 * Fix config file problem for 'allow all' and 'deny all' without a
832 trailing machine address.
834 * Remove fatal failed assertion if command socket cannot be read from
837 * Rewrote timezone handling for Linux real time clock, following
838 various reported problems related to daylight saving.
840 Other changes/Enhancements
841 --------------------------
843 * Configure script recognizes BSD/386 and uses SunOS 4.1 driver for
846 * Log files now print date as day-month-year rather than as a day
847 number. Milliseconds removed from timestamps of logged data.
848 Banners included in file to give meanings of columns.
850 * Only do 1 initial step (followed by a trimming slew) when
851 initialising from RTC on Linux (previously did 2 steps).
859 * Handle timezone of RTC correctly with respect to daylight saving
862 * Syntax check the chronyc 'local' command properly
864 * Fixed assertion failed fault in median finder (used by RTC
867 Other changes/Enhancements
868 --------------------------
870 * Log selection of new NTP reference source to syslog.
872 * Don't zero-pad IP address fields
874 * Add new command to chronyc to allow logfiles to be cycled.
876 * Extend allow/deny directive syntax in configuration file to so
877 directive can apply to all hosts on the Internet.
879 * Tidy up printout of timestamps to make it clear they are in UTC
881 * Make 'configure' check the processor type as well as the operating
projects / thirdparty / chrony.git / blob