title: WordPress - File(/) is not within the allowed path(s)
body: <p>I have something really strange after moving an WordPress to my Server:</p>
  
  <pre><code>Wed Aug 27 18:10:43 2014] [warn] [client 77.21.106.179] mod_fcgid: stderr: PHP Warning: is_dir(): open_basedir restriction in effect. File(/) is not within the allowed path(s): (/var/www/vhosts/xyz/:/tmp/:/usr/share/pear/) in /var/www/vhosts/xyz/xyz/wp-includes/functions.php on line 1425 
  </code></pre>
  
  <p>Why try's WordPress to Access /? Any ideas?</p>
  
  <p>While calling WordPress an 1GB Err-Log will be generated ^^</p>
  
  <p>I do host around 100 WP instances, all do very well, no install trys to Access '/'. </p>
  
  <p>EDIT</p>
  
  <p>This is the function wich Fails:</p>
  
  <pre><code>function wp_mkdir_p( $target ) {
      $wrapper = null;
  
      // strip the protocol
      if( wp_is_stream( $target ) ) {
          list( $wrapper, $target ) = explode( '://', $target, 2 );
      }
  
      // from php.net/mkdir user contributed notes
      $target = str_replace( '//', '/', $target );
  
      // put the wrapper back on the target
      if( $wrapper !== null ) {
          $target = $wrapper . '://' . $target;
      }
  
      // safe mode fails with a trailing slash under certain PHP versions.
      $target = rtrim($target, '/'); // Use rtrim() instead of untrailingslashit to avoid formatting.php dependency.
      if ( empty($target) )
          $target = '/';
  
      if ( file_exists( $target ) )
          return @is_dir( $target );
  
  
      // We need to find the permissions of the parent folder that exists and inherit that.
      $target_parent = dirname( $target );
  
      // MY MODIFICATION
      if ($target_parent = '/') {
          var_dump($target, $target_parent);
          die(debug_print_backtrace());
      }
      // MY MODIFICATION END
  
      while ( '.' != $target_parent &amp;&amp; ! is_dir( $target_parent ) ) {
          $target_parent = dirname( $target_parent );
      }
  
      // Get the permission bits.
      $dir_perms = false;
      if ( $stat = @stat( $target_parent ) ) {
          $dir_perms = $stat['mode'] &amp; 0007777;
      } else {
          $dir_perms = 0777;
      }
  
      if ( @mkdir( $target, $dir_perms, true ) ) {
  
          // If a umask is set that modifies $dir_perms, we'll have to re-set the $dir_perms correctly with chmod()
          if ( $dir_perms != ( $dir_perms &amp; ~umask() ) ) {
              $folder_parts = explode( '/', substr( $target, strlen( $target_parent ) + 1 ) );
              for ( $i = 1; $i &lt;= count( $folder_parts ); $i++ ) {
                  @chmod( $target_parent . '/' . implode( '/', array_slice( $folder_parts, 0, $i ) ), $dir_perms );
              }
          }
  
          return true;
      }
  
      return false;
  }
  </code></pre>
  
  <p>I have added some modification, read the comments to find it, I get the following Output:</p>
  
  <pre><code>string(95) "/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/uploads/2014/09"
  string(1) "/" 
  #0 wp_mkdir_p(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/uploads/2014/09) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/functions.php:1743] 
  #1 wp_upload_dir() called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions/other.php:360] 
  #2 require(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions/other.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/template.php:503] 
  #3 load_template(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions/other.php, ) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/template.php:477] 
  #4 locate_template(Array ([0] =&gt; functions/other.php), 1, ) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/general-template.php:179] 
  #5 get_template_part(functions/other) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions/init.php:9] 
  #6 require(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions/init.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/template.php:503] 
  #7 load_template(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions/init.php, ) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/template.php:477] 
  #8 locate_template(Array ([0] =&gt; functions/init.php), 1, ) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-includes/general-template.php:179] 
  #9 get_template_part(functions/init) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions.php:32] 
  #10 include(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/themes/legatus-theme/functions.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-settings.php:328] 
  #11 require_once(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-settings.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-config.php:111] 
  #12 require_once(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-config.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-load.php:29] 
  #13 require_once(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-load.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/wp-blog-header.php:12] 
  #14 require(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-blog-header.php) called at [/var/www/vhosts/xyz/xyz.kunden.xyz/index.php:17] 
  </code></pre>
  
  <p>What is uncorrect, because dirname(/var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/uploads/2014/09) should return /var/www/vhosts/xyz/xyz.kunden.xyz/wp-content/uploads/2014 and not just /...</p>
  
  <p>any ideas?</p>