Contents of /trunk/fcron/run-crons

#!/bin/bash

# 06 May 2004; Aron Griffis <agriffis@gentoo.org> run-crons:
#     Make the locking actually work.  The old code was racy.
#     Thanks to Mathias Gumz in bug 45155 for some cleanups.
#
# 23 Jun 2002; Jon Nelson <jnelson@gentoo.org> run-crons:
#     fixed a race condition, where cron jobs and run-crons wanted to
#     delete touch files
#
# 20 Apr 2002; Thilo Bangert <bangert@gentoo.org> run-crons:
#     moved lastrun directory to /var/spool/cron/lastrun
#
# Author: Achim Gottinger <achim@gentoo.org>
#
# Mostly copied from SuSE
#
# this script looks into /etc/cron.[hourly|daily|weekly|monthly]
# for scripts to be executed. The info about last run is stored in
# /var/spool/cron/lastrun

LOCKDIR=/var/spool/cron/lastrun
LOCKFILE=${LOCKDIR}/lock

mkdir -p ${LOCKDIR}

# Make sure we're not running multiple instances at once.
# Try twice to lock, otherwise give up.
for ((i = 0; i < 2; i = i + 1)); do
    ln -sn $$ ${LOCKFILE} 2>/dev/null
    if [[ $? != 0 ]]; then
        # lock failed, check for a running process.
        # handle both old- and new-style locking.
        cronpid=$(readlink ${LOCKFILE} 2>/dev/null ||
                  cat ${LOCKFILE} 2>/dev/null)
        if [[ $? == 0 ]]; then 
            if kill -0 ${cronpid} 2>/dev/null; then
                # whoa, another process is really running
                exit 0
            else
                rm -f ${LOCKFILE}
            fi
        fi
    fi
done

# Set a trap to remove the lockfile when we're finished
trap "rm -f ${LOCKFILE}" 0 1 2 3 15


for BASE in hourly daily weekly monthly
do
    CRONDIR=/etc/cron.${BASE}

    test -d $CRONDIR || continue

    if [ -e ${LOCKDIR}/cron.$BASE ]
    then
	case $BASE in
	    hourly)
		#>= 1 hour, 5 min -=> +65 min
		TIME="-cmin +65" ;;
	    daily)
		#>= 1 day, 5 min -=> +1445 min
		TIME="-cmin +1445"  ;;
	    weekly)
		#>= 1 week, 5 min -=> +10085 min
		TIME="-cmin +10085"  ;;
	    monthly)
		#>= 31 days, 5 min -=> +44645 min
		TIME="-cmin +44645" ;;
	esac
        find ${LOCKDIR} -name cron.$BASE $TIME -exec rm {} \;
    fi

    # if there is no touch file, make one then run the scripts
    if [ ! -e ${LOCKDIR}/cron.$BASE ]
    then
        touch ${LOCKDIR}/cron.$BASE

        set +e
        for SCRIPT in $CRONDIR/*
        do
            if [[ -x $SCRIPT && ! -d $SCRIPT ]]; then
                $SCRIPT
            fi
        done
    fi
done

# Clean out bogus cron.$BASE files with future times
touch ${LOCKDIR}
find ${LOCKDIR} -newer ${LOCKDIR} -exec /bin/rm -f {} \;
1	#!/bin/bash
2
3	# 06 May 2004; Aron Griffis <agriffis@gentoo.org> run-crons:
4	# Make the locking actually work. The old code was racy.
5	# Thanks to Mathias Gumz in bug 45155 for some cleanups.
6	#
7	# 23 Jun 2002; Jon Nelson <jnelson@gentoo.org> run-crons:
8	# fixed a race condition, where cron jobs and run-crons wanted to
9	# delete touch files
10	#
11	# 20 Apr 2002; Thilo Bangert <bangert@gentoo.org> run-crons:
12	# moved lastrun directory to /var/spool/cron/lastrun
13	#
14	# Author: Achim Gottinger <achim@gentoo.org>
15	#
16	# Mostly copied from SuSE
17	#
18	# this script looks into /etc/cron.[hourly\|daily\|weekly\|monthly]
19	# for scripts to be executed. The info about last run is stored in
20	# /var/spool/cron/lastrun
21
22	LOCKDIR=/var/spool/cron/lastrun
23	LOCKFILE=${LOCKDIR}/lock
24
25	mkdir -p ${LOCKDIR}
26
27	# Make sure we're not running multiple instances at once.
28	# Try twice to lock, otherwise give up.
29	for ((i = 0; i < 2; i = i + 1)); do
30	ln -sn $$ ${LOCKFILE} 2>/dev/null
31	if [[ $? != 0 ]]; then
32	# lock failed, check for a running process.
33	# handle both old- and new-style locking.
34	cronpid=$(readlink ${LOCKFILE} 2>/dev/null \|\|
35	cat ${LOCKFILE} 2>/dev/null)
36	if [[ $? == 0 ]]; then
37	if kill -0 ${cronpid} 2>/dev/null; then
38	# whoa, another process is really running
39	exit 0
40	else
41	rm -f ${LOCKFILE}
42	fi
43	fi
44	fi
45	done
46
47	# Set a trap to remove the lockfile when we're finished
48	trap "rm -f ${LOCKFILE}" 0 1 2 3 15
49
50
51	for BASE in hourly daily weekly monthly
52	do
53	CRONDIR=/etc/cron.${BASE}
54
55	test -d $CRONDIR \|\| continue
56
57	if [ -e ${LOCKDIR}/cron.$BASE ]
58	then
59	case $BASE in
60	hourly)
61	#>= 1 hour, 5 min -=> +65 min
62	TIME="-cmin +65" ;;
63	daily)
64	#>= 1 day, 5 min -=> +1445 min
65	TIME="-cmin +1445" ;;
66	weekly)
67	#>= 1 week, 5 min -=> +10085 min
68	TIME="-cmin +10085" ;;
69	monthly)
70	#>= 31 days, 5 min -=> +44645 min
71	TIME="-cmin +44645" ;;
72	esac
73	find ${LOCKDIR} -name cron.$BASE $TIME -exec rm {} \;
74	fi
75
76	# if there is no touch file, make one then run the scripts
77	if [ ! -e ${LOCKDIR}/cron.$BASE ]
78	then
79	touch ${LOCKDIR}/cron.$BASE
80
81	set +e
82	for SCRIPT in $CRONDIR/*
83	do
84	if [[ -x $SCRIPT && ! -d $SCRIPT ]]; then
85	$SCRIPT
86	fi
87	done
88	fi
89	done
90
91	# Clean out bogus cron.$BASE files with future times
92	touch ${LOCKDIR}
93	find ${LOCKDIR} -newer ${LOCKDIR} -exec /bin/rm -f {} \;