Current File : //proc/self/root/etc/cron.daily/0yum.cron
#!/bin/bash
# Only run if this flag file is set (by /etc/rc.d/init.d/yum-cron)
if [ ! -f /var/lock/subsys/yum-cron ]; then
exit 0
fi
DAILYSCRIPT=/etc/yum/yum-daily.yum
WEEKLYSCRIPT=/etc/yum/yum-weekly.yum
LOCKDIR=/var/lock/yum-cron.lock
LOCKFILE=$LOCKDIR/pidfile
TSLOCK=$LOCKDIR/ts.lock
# Grab config settings
if [ -f /etc/sysconfig/yum-cron ]; then
source /etc/sysconfig/yum-cron
fi
# set default for SYSTEMNAME
[ -z "$SYSTEMNAME" ] && SYSTEMNAME=$(hostname)
# Only run on certain days of the week
dow=`date +%w`
DAYS_OF_WEEK=${DAYS_OF_WEEK:-0123456}
if [ "${DAYS_OF_WEEK/$dow/}" == "${DAYS_OF_WEEK}" ]; then
exit 0
fi
# if DOWNLOAD_ONLY is set then we force CHECK_ONLY too.
# Gotta check before one can download!
if [ "$DOWNLOAD_ONLY" == "yes" ]; then
CHECK_ONLY=yes
fi
YUMTMP=$(mktemp /var/run/yum-cron.XXXXXX)
touch $YUMTMP
[ -x /sbin/restorecon ] && /sbin/restorecon $YUMTMP
# Random wait function
random_wait() {
sleep $(( $RANDOM % ($RANDOMWAIT * 60) + 1 ))
}
# Note - the lockfile code doesn't try and use YUMTMP to email messages nicely.
# Too many ways to die, this gets handled by normal cron error mailing.
# Try mkdir for the lockfile, will test for and make it in one atomic action
if mkdir $LOCKDIR 2>/dev/null; then
# store the current process ID in there so we can check for staleness later
echo "$$" >"${LOCKFILE}"
# and clean up locks and tempfile if the script exits or is killed
trap "{ rm -f $LOCKFILE $TSLOCK; rmdir $LOCKDIR 2>/dev/null; rm -f $YUMTMP; exit 255; }" INT TERM EXIT
else
# lock failed, check if process exists. First, if there's no PID file
# in the lock directory, something bad has happened, we can't know the
# process name, so clean up the old lockdir and restart
if [ ! -f $LOCKFILE ]; then
rmdir $LOCKDIR 2>/dev/null
echo "yum-cron: no lock PID, clearing and restarting myself" >&2
exec $0 "$@"
fi
OTHERPID="$(cat "${LOCKFILE}")"
# if cat wasn't able to read the file anymore, another instance probably is
# about to remove the lock -- exit, we're *still* locked
if [ $? != 0 ]; then
echo "yum-cron: lock failed, PID ${OTHERPID} is active" >&2
exit 0
fi
if ! kill -0 $OTHERPID &>/dev/null; then
# lock is stale, remove it and restart
echo "yum-cron: removing stale lock of nonexistant PID ${OTHERPID}" >&2
rm -rf "${LOCKDIR}"
echo "yum-cron: restarting myself" >&2
exec $0 "$@"
else
# Remove stale (more than a day old) lockfiles
find $LOCKDIR -type f -name 'pidfile' -amin +1440 -exec rm -rf $LOCKDIR \;
# if it's still there, it wasn't too old, bail
if [ -f $LOCKFILE ]; then
# lock is valid and OTHERPID is active - exit, we're locked!
echo "yum-cron: lock failed, PID ${OTHERPID} is active" >&2
exit 0
else
# lock was invalid, restart
echo "yum-cron: removing stale lock belonging to stale PID ${OTHERPID}" >&2
echo "yum-cron: restarting myself" >&2
exec $0 "$@"
fi
fi
fi
# Then check for updates and/or do them, as configured
{
# First, if this is CLEANDAY, do so
CLEANDAY=${CLEANDAY:-0}
if [ ! "${CLEANDAY/$dow/}" == "${CLEANDAY}" ]; then
/usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y shell $WEEKLYSCRIPT
fi
# Now continue to do the real work
if [ "$CHECK_ONLY" == "yes" ]; then
random_wait
touch $TSLOCK
/usr/bin/yum $YUM_PARAMETER -e 0 -d 0 -y check-update 1> /dev/null 2>&1
case $? in
1) exit 1;;
100) echo "New updates available for host `/bin/hostname`";
/usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y -C check-update
if [ "$DOWNLOAD_ONLY" == "yes" ]; then
/usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y --downloadonly update
echo "Updates downloaded, use \"yum -C update\" manually to install them."
fi
;;
esac
elif [ "$CHECK_FIRST" == "yes" ]; then
# Don't run if we can't access the repos
random_wait
touch $TSLOCK
/usr/bin/yum $YUM_PARAMETER -e 0 -d 0 check-update 2>&-
case $? in
1) exit 1;;
100) /usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y update yum
/usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y shell $DAILYSCRIPT
;;
esac
else
random_wait
touch $TSLOCK
/usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y update yum
/usr/bin/yum $YUM_PARAMETER -e ${ERROR_LEVEL:-0} -d ${DEBUG_LEVEL:-0} -y shell $DAILYSCRIPT
fi
} >> $YUMTMP 2>&1
if [ ! -z "$MAILTO" ] && [ -x /bin/mail ]; then
# if MAILTO is set, use mail command (ie better than standard mail with cron output)
[ -s "$YUMTMP" ] && mail -s "System update: $SYSTEMNAME" $MAILTO < $YUMTMP
else
# default behavior is to use cron's internal mailing of output from cron-script
cat $YUMTMP
fi
rm -f $YUMTMP
exit 0
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