Do the chmod only if we are on linux and if we are the owner of the file

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@1474 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

dblayer.php

@@ -161,7 +161,8 @@ class dblayer extends PDO
       if (file_exists ($file) && ! is_writeable ($file))
         throw new Exception (_("The SQLite database file is write protected"),
                              500);
-      chmod ($file, 0666);
+      if (function_exists ("posix_getuid") && fileowner ($file) === posix_getuid ())
+        chmod ($file, 0666);
       // Force ForeignKeys support (disabled by default)
       $this->db->exec("PRAGMA foreign_keys = ON");
       break;