Some syslog producers provide inconsistent timestamps, so provide an option
to ignore the message timestamps and always locally timestamp. In order to
implement this, invert the valid-timestamp check, but only use the timestamp
if this option is not enabled.
This is in line with what what other syslogd implementations do:
From sysklogd syslogd.c:
* Sun Nov 7 12:28:47 CET 2004: Martin Schulze <joey@infodrom.org>
* Discard any timestamp information found in received syslog
* messages. This will affect local messages sent from a
* different timezone.
rsyslog's imuxsock module similary has an (enabled by default)
IgnoreTimestamp option:
https://www.rsyslog.com/doc/v8-stable/configuration/modules/imuxsock.html
function old new delta
packed_usage 32877 32912 +35
timestamp_and_log 363 376 +13
syslogd_main 1638 1641 +3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 51/0) Total: 51 bytes
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
9d539f9fbd