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ntp: set minimum polltarget

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The polltarget value is used in a floating-point division in the
calculation of the poll adjustment. Set 1 as the minimum accepted
polltarget value to avoid working with infinite values.
This commit is contained in:
Miroslav Lichvar 2023-05-17 16:37:55 +02:00
parent 5ba42cee45
commit d4738e1259
1 changed files with 2 additions and 2 deletions
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4
ntp_core.c
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@ -647,7 +647,7 @@ NCR_CreateInstance(NTP_Remote_Address *remote_addr, NTP_Source_Type type,
result->auto_burst = params->burst; result->auto_burst = params->burst;
result->auto_offline = params->auto_offline; result->auto_offline = params->auto_offline;
result->copy = params->copy && result->mode == MODE_CLIENT; result->copy = params->copy && result->mode == MODE_CLIENT;
result->poll_target = params->poll_target; result->poll_target = MAX(1, params->poll_target);
result->ext_field_flags = params->ext_fields; result->ext_field_flags = params->ext_fields;
if (params->nts) { if (params->nts) {
@ -2900,7 +2900,7 @@ NCR_ModifyMinstratum(NCR_Instance inst, int new_min_stratum)
void void
NCR_ModifyPolltarget(NCR_Instance inst, int new_poll_target) NCR_ModifyPolltarget(NCR_Instance inst, int new_poll_target)
{ {
inst->poll_target = new_poll_target; inst->poll_target = MAX(1, new_poll_target);
LOG(LOGS_INFO, "Source %s new polltarget %d", LOG(LOGS_INFO, "Source %s new polltarget %d",
UTI_IPToString(&inst->remote_addr.ip_addr), new_poll_target); UTI_IPToString(&inst->remote_addr.ip_addr), new_poll_target);
} }