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refclock: add tai option

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This option is for indicating to chronyd that the reference clock is
kept in TAI and that chrony should attempt to convert from TAI to UTC by
using the timezone configured by the "leapsectz" directive.
This commit is contained in:
Chris Perl
2017-10-10 13:23:21 -04:00
committed by Miroslav Lichvar
parent a0fe71eef1
commit f5d1b8fb74
4 changed files with 30 additions and 1 deletions
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16
refclock.c
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@@ -80,6 +80,7 @@ struct RCL_Instance_Record {
int pps_active;
int max_lock_age;
int stratum;
int tai;
struct MedianFilter filter;
uint32_t ref_id;
uint32_t lock_ref;
@@ -190,6 +191,9 @@ RCL_AddRefclock(RefclockParameters *params)
return 0;
}
if (params->tai && !CNF_GetLeapSecTimezone())
LOG_FATAL("refclock tai option requires leapsectz");
inst->data = NULL;
inst->driver_parameter = params->driver_parameter;
inst->driver_parameter_length = 0;
@@ -202,6 +206,7 @@ RCL_AddRefclock(RefclockParameters *params)
inst->pps_active = 0;
inst->max_lock_age = params->max_lock_age;
inst->stratum = params->stratum;
inst->tai = params->tai;
inst->lock_ref = params->lock_ref_id;
inst->offset = params->offset;
inst->delay = params->delay;
@@ -387,6 +392,17 @@ RCL_AddSample(RCL_Instance instance, struct timespec *sample_time, double offset
return 0;
}
if (instance->tai) {
int tai_offset = REF_GetTaiOffset(sample_time);
if (!tai_offset) {
DEBUG_LOG("refclock sample ignored unknown TAI offset");
return 0;
}
offset -= tai_offset;
}
filter_add_sample(&instance->filter, &cooked_time, offset - correction + instance->offset, dispersion);
instance->pps_active = 0;