pwmconfig: Don't start if fancontrol is running.

fancontrol: Don't start if already running, delete fancontrol.pid at
exit time.
This closes ticket #2299.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/branches/lm-sensors-3.0.0@5180 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -9,6 +9,9 @@ SVN-HEAD
   pwmconfig: Don't create the configuration file before it's needed
              Don't preserve configuration file customizations
              Fix permissions of the configuration file
+             Don't start if fancontrol is running (#2299)
+  fancontrol: Don't start if already running (#2299)
+              Delete fancontrol.pid at exit time (#2299)
   sensors-detect: Add SMSC SCH5027D detection
                   Do not access I/O ports on PPC
                   Move south bridge sensor detection to the right section

prog/init/fancontrol.init

@@ -34,7 +34,6 @@ stop()
    echo -n "Stopping fancontrol daemon"
    killproc $FANCONTROL
    RETVAL=$?
-   rm -f $PIDFILE
    rm -f /var/lock/subsys/fancontrol
    echo
 }

prog/pwm/fancontrol

@@ -22,7 +22,7 @@
 #
 #
 #    Copyright 2003 Marius Reiner <marius.reiner@hdev.de>
-#    Copyright (C) 2007 Jean Delvare <khali@linux-fr.org>
+#    Copyright (C) 2007-2008 Jean Delvare <khali@linux-fr.org>
 #
 #    This program is free software; you can redistribute it and/or modify
 #    it under the terms of the GNU General Public License as published by
@@ -41,10 +41,17 @@
 #
 #
 
+PIDFILE="/var/run/fancontrol.pid"
+
 #DEBUG=1
 MAX=255
 
-echo $$ > /var/run/fancontrol.pid
+if [ -f "$PIDFILE" ]
+then
+	echo "File $PIDFILE exists, is fancontrol already running?"
+	exit 1
+fi
+echo $$ > "$PIDFILE"
 
 declare -i pwmval
 
@@ -248,6 +255,7 @@ function restorefans()
 		let fcvcount=$fcvcount+1
 	done
 	echo 'Verify fans have returned to full speed'
+	rm -f "$PIDFILE"
 	exit $status
 }
 

prog/pwm/pwmconfig

@@ -27,6 +27,18 @@
 #    MA 02110-1301 USA.
 #
 #
+
+PIDFILE="/var/run/fancontrol.pid"
+
+if [ -f "$PIDFILE" ]
+then
+	echo "File $PIDFILE exists. This typically means that the"
+	echo "fancontrol deamon is running. You should stop it before running pwmconfig."
+	echo "If you are certain that fancontrol is not running, then you can delete"
+	echo "$PIDFILE manually."
+	exit 1
+fi
+
 echo 'This program will search your sensors for pulse width modulation (pwm)'
 echo 'controls, and test each one to see if it controls a fan on'
 echo 'your motherboard. Note that many motherboards do not have pwm'