Helpers: added transpose_user_path function

plugins/dynamix/include/Helpers.php

@@ -203,4 +203,15 @@ function autov($file) {
   clearstatcache(true, $docroot.$file);
   echo "$file?v=".filemtime($docroot.$file);
 }
+function transpose_user_path($path) {
+  if (strpos($path, '/mnt/user/') === 0 && file_exists($path)) {
+    $realdisk = trim(shell_exec("getfattr --absolute-names -n user.LOCATIONS ".escapeshellarg($path)." 2>/dev/null|grep -Po '^user.LOCATIONS=\"\K[^\\\"]+'"));
+    if (!empty($realdisk)) {
+      // there may be several disks participating in this path (e.g. disk1,2,3) so
+      // only return the first disk and replace 'user' with say 'cache' or 'disk1'
+      $path = str_replace('/mnt/user/', '/mnt/'.strtok($realdisk.',', ',').'/', $dir);
+    }
+  }
+  return $path;
+}
 ?>