get eyesis4pi free space

src/eyesis4pi/eyesis4pi_interface.php

@@ -39,6 +39,25 @@ switch($cmd){
     die(symlink($mountpoint,$symlink));
     break;
   case "free_space":
+    //sda1
+    if (is_dir($mountpoint)) $sda1 = round(disk_free_space($mountpoint)/1024/1024/1024,2);
+    
+    //sda2
+    if (!is_file($camogmdisk)){
+      $devices = get_raw_dev();
+      foreach($devices as $device=>$size){
+        //size in MB
+        if ($device=="/dev/sda2") $sda2 = round($size/1048576,2);
+      }
+    }else{
+      //read camogm.disk file
+      $sda2 = 10;
+    }
+    
+    respond_xml("{$sda1}G {$sda2}G");
+    
+    break;
+  case "free_space_bkp":
     // results are in GB
     // /dev/sda2 is not a mountpoint but a device because it does not have a file system
     $res = 0;