File sysstat-8.1.6-sa1sa2lock.diff of Package sysstat.13175

Index: sysstat-11.6.1/sa1.in
===================================================================
--- sysstat-11.6.1.orig/sa1.in
+++ sysstat-11.6.1/sa1.in
@@ -22,15 +22,21 @@ then
 	SADC_OPTIONS="${SADC_OPTIONS} -D"
 fi
 
+set -e
 ENDIR=@SA_LIB_DIR@
 cd ${ENDIR}
+LOCKFILE=/var/run/sysstat/sadc.LOCK
+mkdir -p /var/run/sysstat
+lockfile -r2 -30 "$LOCKFILE" 2>/dev/null
+trap "/bin/rm -f $LOCKFILE" EXIT
+
 [ "$1" = "--boot" ] && shift && BOOT=y || BOOT=n
 if [ $# = 0 ] && [ "${BOOT}" = "n" ]
 then
 # Note: Stats are written at the end of previous file *and* at the
 # beginning of the new one (when there is a file rotation) only if
 # outfile has been specified as '-' on the command line...
-	exec ${ENDIR}/sadc -F -L ${SADC_OPTIONS} 1 1 ${SA_DIR}
+	 ${ENDIR}/sadc -F -L ${SADC_OPTIONS} 1 1 ${SA_DIR}
 else
-	exec ${ENDIR}/sadc -F -L ${SADC_OPTIONS} $* ${SA_DIR}
+	 ${ENDIR}/sadc -F -L ${SADC_OPTIONS} $* ${SA_DIR}
 fi
Index: sysstat-11.6.1/sa2.in
===================================================================
--- sysstat-11.6.1.orig/sa2.in
+++ sysstat-11.6.1/sa2.in
@@ -43,6 +43,17 @@ ENDIR=@bindir@
 
 [ -f "${DFILE}" ] || exit 0
 cd ${ENDIR}
+
+LOCKFILE=/var/run/sysstat/sadc.LOCK
+mkdir -p /var/run/sysstat
+if ! lockfile -r6 -600 $LOCKFILE 2>/dev/null; then
+  if test `find $LOCKFILE -mmin +180 2>/dev/null`; then
+    rm -f $LOCKFILE
+    logger -p cron.alert "$0: detected an old lockfile \"$LOCKFILE\"."
+  fi
+fi
+trap "/bin/rm -f $LOCKFILE" EXIT
+
 if [ x${REPORTS} != xfalse ]
 then
 	${ENDIR}/sar $* -f ${DFILE} > ${RPT}