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init.d: use flock insted of creating/removing files

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This commit is contained in:
Pavel Kartavyy 2014-12-29 20:31:30 +03:00
parent 2cdffef31c
commit d9e9cf6f11
1 changed files with 27 additions and 36 deletions
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63
tools/init.d/template
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@ -108,13 +108,10 @@ start()
echo -n "Start $PROGRAM service: " echo -n "Start $PROGRAM service: "
[ -f "$LOCKFILE" ] && sleep 1
if [[ $(running_processes) -eq $NUMBER_OF_PROCESSES ]]; then if [[ $(running_processes) -eq $NUMBER_OF_PROCESSES ]]; then
echo -n "already running " echo -n "already running "
EXIT_STATUS=1 EXIT_STATUS=1
else else
# Clean stale lock files
rm -f "$LOCKFILE"
mkdir -p $LOGDIR mkdir -p $LOGDIR
mkdir -p $PIDDIR mkdir -p $PIDDIR
chown -R $USER:$GROUP $LOGDIR chown -R $USER:$GROUP $LOGDIR
@ -135,7 +132,6 @@ start()
fi fi
if [[ $EXIT_STATUS -eq 0 ]]; then if [[ $EXIT_STATUS -eq 0 ]]; then
touch "$LOCKFILE"
echo "DONE" echo "DONE"
else else
echo "FAILED" echo "FAILED"
@ -151,21 +147,11 @@ stop()
echo -n "Stop $PROGRAM service: " echo -n "Stop $PROGRAM service: "
if any_runs; then for pid_file in $(find_pid_files); do
if [ -f "$LOCKFILE" ]; then kill -TERM `cat "$pid_file"`
for pid_file in $(find_pid_files); do done
kill -TERM `cat "$pid_file"`
done
wait4done wait4done
rm -f "$LOCKFILE"
else
echo "has been stopping already"
return 1
fi
else
rm -f "$LOCKFILE"
fi
echo "DONE" echo "DONE"
return $EXIT_STATUS return $EXIT_STATUS
@ -184,19 +170,11 @@ forcestop()
echo -n "Stop $PROGRAM service: " echo -n "Stop $PROGRAM service: "
if any_runs; then for pid_file in $(find_pid_files); do
if [ -f "$LOCKFILE" ]; then kill -9 `cat "$pid_file"`
for pid_file in $(find_pid_files); do done
kill -9 `cat "$pid_file"`
done
wait4done wait4done
rm -f "$LOCKFILE"
else
echo "has been stopping already"
return 1
fi
fi
echo "DONE" echo "DONE"
return $EXIT_STATUS return $EXIT_STATUS
@ -218,9 +196,16 @@ disable_cron()
sed -i 's/^#*/#/' "$CRONFILE" sed -i 's/^#*/#/' "$CRONFILE"
} }
# See how we were called. is_cron_disabled()
EXIT_STATUS=0 {
case "$1" in [[ `grep -E "^#.*" $CRONFILE` == `cat $CRONFILE` ]];
}
main()
{
# See how we were called.
EXIT_STATUS=0
case "$1" in
start) start)
start && enable_cron start && enable_cron
;; ;;
@ -231,7 +216,7 @@ case "$1" in
if [[ $(running_processes) -eq $NUMBER_OF_PROCESSES ]]; then if [[ $(running_processes) -eq $NUMBER_OF_PROCESSES ]]; then
echo "$PROGRAM service is running" echo "$PROGRAM service is running"
else else
if [ ! -e $LOCKFILE ]; then if is_cron_disabled; then
echo "$PROGRAM service is stopped"; echo "$PROGRAM service is stopped";
else else
echo "$PROGRAM: $(($NUMBER_OF_PROCESSES - $(running_processes))) of $NUMBER_OF_PROCESSES processes unexpectedly terminated" echo "$PROGRAM: $(($NUMBER_OF_PROCESSES - $(running_processes))) of $NUMBER_OF_PROCESSES processes unexpectedly terminated"
@ -265,6 +250,12 @@ case "$1" in
*) *)
echo "Usage: ${0##*/} {start|stop|status|restart|forcestop|forcerestart|reload|condstart|condstop|condrestart|condreload}" echo "Usage: ${0##*/} {start|stop|status|restart|forcestop|forcerestart|reload|condstart|condstop|condrestart|condreload}"
EXIT_STATUS=2 EXIT_STATUS=2
esac esac
exit $EXIT_STATUS exit $EXIT_STATUS
}
(
flock -n 9 || echo "Init script is already running" && exit 1
main
) 9> $LOCKFILE