Exit immediately if not root.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@5749 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -1,6 +1,9 @@
 lm-sensors CHANGES file
 -----------------------
 
+SVN-HEAD
+  pwmconfig: Exit immediately if not root
+
 3.1.1 (2009-06-21)
   isadump: Use geteuid instead of getuid so that setuid bit works
   isaset: Use geteuid instead of getuid so that setuid bit works

prog/pwm/pwmconfig

@@ -42,6 +42,12 @@ then
 	exit 1
 fi
 
+if [ "`id -u`" != "0" ]
+then
+	echo "You need to be root to run this script."
+	exit 1
+fi
+
 echo "# pwmconfig revision $REVISION ($REVDATE)"
 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'
@@ -258,7 +264,7 @@ do
 			GOODPWM="$GOODPWM $i"
 		fi
 	else
-		NOTROOT=1
+		echo "Can't write to $i, skipping."
 	fi
 done
 
@@ -302,13 +308,6 @@ then
 	exit 1
 fi
 
-if [ "$NOTROOT" = "1" ]
-then
-	echo 'As you are not root, we cannot write the PWM settings.'
-	echo 'Please run as root to continue.'
-	exit 1
-fi
-
 echo 'Warning!!! This program will stop your fans, one at a time,'
 echo "for approximately $DELAY seconds each!!!"
 echo 'This may cause your processor temperature to rise!!!'