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travelmate: fix possible race condition

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* prevent possible duplicate script execution due to
  multiple ntp events in parallel

Signed-off-by: Dirk Brenken <dev@brenken.org>
This commit is contained in:
Dirk Brenken
2020-11-26 22:39:15 +01:00
parent 6dc567270e
commit 84f20951b3
2 changed files with 10 additions and 6 deletions
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net/travelmate/files/travelmate_ntp.hotplug
+9 -5
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@@ -22,10 +22,14 @@ f_log()
fi
}
if [ "${ACTION}" = "stratum" ] && [ ! -f "${trm_ntpfile}" ] && \
[ "$("${trm_init}" enabled; printf "%u" ${?})" = "0" ]
if [ "${ACTION}" = "stratum" ] && [ ! -f "${trm_ntpfile}" ] && [ "$("${trm_init}" enabled; printf "%u" ${?})" = "0" ]
then
> "${trm_ntpfile}"
f_log "info" "get ntp time sync"
"${trm_init}" restart
{
flock -xn 1001
if [ "$?" = "0" ]
then
f_log "info" "get ntp time sync"
"${trm_init}" restart
fi
} 1001>"${trm_ntpfile}"
fi