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Add support for reading leap second data from tz database

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leapsectz directive is used to set the name of the timezone in the
system tz database which chronyd can use to find out when will the next
leap second occur.  It will periodically check if dates Jun 30 23:59:60
and Dec 31 23:59:60 are valid in that timezone. This is mainly useful
with reference clocks which don't provide the leap second information.
It is not necessary to restart chronyd if the tz database is updated
with a new leap second at least 12 hours before the event.
This commit is contained in:
Miroslav Lichvar
2012-02-23 18:48:24 +01:00
parent f7c65a4b88
commit 2a5c045c3d
4 changed files with 128 additions and 13 deletions
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conf.h
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@@ -69,6 +69,7 @@ extern void CNF_GetFallbackDrifts(int *min, int *max);
extern void CNF_GetBindAddress(int family, IPAddr *addr);
extern void CNF_GetBindCommandAddress(int family, IPAddr *addr);
extern char *CNF_GetPidFile(void);
extern char *CNF_GetLeapSecTimezone(void);
extern void CNF_GetLinuxHz(int *set, int *hz);
extern void CNF_GetLinuxFreqScale(int *set, double *freq_scale);