GNU readline switched to GPLv3+ in version 6.0, which is incompatible
with the chrony's GPLv2 license.
Drop support for the readline library. Only editline is supported now.
As a Linux-specific feature, allow sockets to be bound to a device using
the SO_BINDTODEVICE socket option. The CAP_NET_RAW capability is
required for setting the option.
Allow an IP family to be specified in the socket initialization in order
to globally disable the other family. This replaces the ntp_io and
cmdmon code handling the -4/-6 options and fixes a case where the NTP
client could still use a disabled family if the source was specified
with an IP address.
Add a new field to the CLIENT_ACCESSES_BY_INDEX request to specify the
minimum number of NTP or cmdmon packets for a client to be reported.
Add -p option to the chronyc clients command to specify the threshold
(by default 0). This option can be used to minimize the number of cmdmon
requests when interested only in clients sending a large number
of requests.
Add a flag to the CLIENT_ACCESSES_BY_INDEX request to reset the
NTP/cmdmon hits/dropped counters after reporting the current values.
Add -r option to the chronyc clients command to perform the reset. This
should make it easier to find clients that send large number of requests
over short periods of time.
The reset command drops all measurements and switches the reference to
the unsynchronised state. This command can help chronyd with recovery
when the measurements are known to be no longer valid or accurate, e.g.
due to moving the computer to a different network, or resuming the
computer from a low-power state (which resets the system clock).
Allow the nts and ntsport options to be specified for sources added from
chronyc. This is an incompatible change in the request, but there was no
release using the new REQ_ADD_SOURCE command yet.
Add -a option to the sources and sourcestats commands to print all
sources, including those that don't have a resolved address yet. By
default, only sources that have a real address are printed for
compatibility. Remove the "210 Number of sources" messages to avoid
confusion. Also, modify the ntpdata command to always print only sources
with a resolved address.
Add a new command to print the original name of a source specified by
address. This could be useful in scripts to avoid having to run the
sources command with and without -N.
Add -N option to chronyc to print the original names by which the
sources were specified instead of using reverse DNS lookup. The option
works in the sources, sourcestats and tracking commands.
Modify the request for adding a source to provide the name of the source
instead of its address (resolved in chronyc) in order to enable chronyd
to replace the source, support an "add pool" command, and enable an NTS
client to verify the server's certificate.
The name resolving does not block the response. Success is indicated
even if the name cannot be resolved, or a source with the same address
is already present.
To prevent unresolvable names from getting to chronyd, chronyc does not
send the request if it could not resolve the name itself (assuming they
are both running on the same host using the same resolver).
Reorder the LOGS_Severity enum in order of severity and change the code
to not log/print messages with severity below the specified minimum
instead of having a separate debug level.
In chronyc handle SIGPIPE similarly to SIGTERM. In chronyd ignore the
signal to avoid crashing when a TCP socket will be needed (e.g. for
NTS-KE) and will be unexpectedly closed from the other side.
Fix mismatches between the format and sign of variables passed to
printf() or scanf(), which were found in a Frama-C analysis and gcc
using the -Wformat-signedness option.
Remove spaces from tab-completion results and now break on a space.
Tested with both readline and editline (libedit)
Incorporated Miroslav's suggestions.
