ffhb
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dns
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introduced trap to reduce redunant code

This commit is contained in:
milliways root-user 2014-09-20 10:23:27 +02:00
parent c4d923240b
commit 4b18998873
1 changed files with 15 additions and 13 deletions
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28
update-dns.sh
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@ -28,7 +28,7 @@
# POSSIBILITY OF SUCH DAMAGE. # POSSIBILITY OF SUCH DAMAGE.
# PID file # PID file
PID_FILE="/run/ffhb-update-dns.pid" RUN_FILE='/run/ffhb-update-dns.run'
# getting workingdir of scripts # getting workingdir of scripts
WORK_DIR="$(dirname $(readlink -nf $0))" WORK_DIR="$(dirname $(readlink -nf $0))"
@ -52,12 +52,23 @@ fi
ZONEFILE=/var/cache/bind/ffhb.nodes.zone ZONEFILE=/var/cache/bind/ffhb.nodes.zone
RZONEFILE=/var/cache/bind/arpa.ip6.f.d.2.f.5.1.1.9.0.f.2.c.zone RZONEFILE=/var/cache/bind/arpa.ip6.f.d.2.f.5.1.1.9.0.f.2.c.zone
function on_exit() {
# remove tmp files
for FILE in "$TMP_FILE" "$RUN_FILE"; do
if [ -n "$FILE" ]; then
rm -f "$FILE"
fi
done
}
trap on_exit EXIT SIGTERM SIGINT
# write run file # write run file
if [ -f "$PID_FILE" ]; then if [ -f "$RUN_FILE" ]; then
echo "Script already running!" >&2 echo 'Script already running!' >&2
exit 1 exit 1
else else
touch "$PID_FILE" touch "$RUN_FILE"
fi fi
# loop until data received # loop until data received
@ -76,9 +87,6 @@ while true; do
# if the 240th run has reached kill script # if the 240th run has reached kill script
if [ $NUM -gt 240 ]; then if [ $NUM -gt 240 ]; then
# remove tmp file
rm -f "$TMP_FILE"
# exit with error code # exit with error code
exit 1 exit 1
fi fi
@ -99,9 +107,3 @@ fi
# reload nameserver # reload nameserver
rndc reload >/dev/null rndc reload >/dev/null
# remove tmp file
rm -f "$TMP_FILE"
# remove PID file
rm -f "$PID_FILE"