diff options
| author | Dirk Brenken <dev@brenken.org> | 2020-11-26 22:39:15 +0100 |
|---|---|---|
| committer | Dirk Brenken <dev@brenken.org> | 2020-11-26 22:39:15 +0100 |
| commit | 84f20951b32b8652c3fce37c23d795583718ac84 (patch) | |
| tree | 7d6f58fa83953febf670ae7460c992590ba1e488 /net/travelmate/files/travelmate_ntp.hotplug | |
| parent | 6dc567270e896c15e05e4b7b736c6e26f7e3b896 (diff) | |
travelmate: fix possible race condition
* prevent possible duplicate script execution due to
multiple ntp events in parallel
Signed-off-by: Dirk Brenken <dev@brenken.org>
Diffstat (limited to 'net/travelmate/files/travelmate_ntp.hotplug')
| -rwxr-xr-x | net/travelmate/files/travelmate_ntp.hotplug | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/net/travelmate/files/travelmate_ntp.hotplug b/net/travelmate/files/travelmate_ntp.hotplug index 4a31d5946..2a215e4ba 100755 --- a/net/travelmate/files/travelmate_ntp.hotplug +++ b/net/travelmate/files/travelmate_ntp.hotplug @@ -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 |