egd.rc

openssh47的源码

#!/sbin/sh

#
# egd.rc: EGD start-up and shutdown script
#

# Allowed exit values:
#       0 = success; causes "OK" to show up in checklist.
#       1 = failure; causes "FAIL" to show up in checklist.
#       2 = skip; causes "N/A" to show up in the checklist.
#           Use this value if execution of this script is overridden
#           by the use of a control variable, or if this script is not
#           appropriate to execute for some other reason.
#       3 = reboot; causes the system to be rebooted after execution.

# Input and output:
#       stdin is redirected from /dev/null
#
#       stdout and stderr are redirected to the /etc/rc.log file
#       during checklist mode, or to the console in raw mode.

umask 022

PATH=/usr/sbin:/usr/bin:/sbin
export PATH

WHAT='EGD (entropy gathering daemon)'
WHAT_PATH=/opt/perl/bin/egd.pl
WHAT_CONFIG=/etc/rc.config.d/egd
WHAT_LOG=/etc/opt/egd/egd.log

# NOTE: If your script executes in run state 0 or state 1, then /usr might
#       not be available.  Do not attempt to access commands or files in
#       /usr unless your script executes in run state 2 or greater.  Other
#       file systems typically not mounted until run state 2 include /var
#       and /opt.

rval=0

# Check the exit value of a command run by this script.  If non-zero, the
# exit code is echoed to the log file and the return value of this script
# is set to indicate failure.

set_return() {
	x=$?
	if [ $x -ne 0 ]; then
		echo "EXIT CODE: $x"
		rval=1	# script FAILed
	fi
}

case $1 in
'start_msg')
	echo "Starting $WHAT"
	;;

'stop_msg')
	echo "Stopping $WHAT"
	;;

'start')
	if [ -f $WHAT_CONFIG ] ; then
		. $WHAT_CONFIG
	else
		echo "ERROR: $WHAT_CONFIG defaults file MISSING"
	fi
	

	if [ "$EGD_START" -eq 1 -a -x $WHAT_PATH ]; then
		EGD_LOG=${EGD_LOG:-$WHAT_LOG}
		su egd -c "nohup $WHAT_PATH $EGD_ARGS >$EGD_LOG 2>&1" &&
			echo $WHAT started
		set_return
	else
		rval=2
	fi
	;;

'stop')
	pid=`ps -fuegd | awk '$1 == "egd" { print $2 }'`
	if [ "X$pid" != "X" ]; then
		if kill "$pid"; then
			echo "$WHAT stopped"
		else
			rval=1
			echo "Unable to stop $WHAT"
		fi
	fi
	set_return
	;;

*)
	echo "usage: $0 {start|stop|start_msg|stop_msg}"
	rval=1
	;;
esac

exit $rval