diff --git a/file.php b/file.php
index ce8452a..55981ef 100644
--- a/file.php
+++ b/file.php
@@ -41,6 +41,80 @@ class file
     return true;
   }
 
+  /** Change the group for a file/dir...
+    * @param $filename string The file/directory to change
+    * @param $group mixed The group name or group GID
+    * @throws If filename not exists, or the directory is not RW
+    */
+  public function chgrp ($filename, $group)
+  {
+    $this->debug (2, "chgrp ($filename, $group)");
+    $filename = $this->realpath ($filename);
+    $this->checkPathRW (dirname ($filename));
+    if (! file_exists ($filename))
+      throw new \Exception (sprintf (dgettext ("domframework",
+                                     "File '%s' to chmod doesn't exists"),
+                                     $filename), 404);
+    if (! is_writeable ($filename))
+      throw new \Exception (sprintf (dgettext ("domframework",
+                                       "File '%s' to chmod is not writeable"),
+                                       $filename), 500);
+    $rc = chgrp ($filename, $group);
+    $this->debug (1, "chgrp ($filename, $group) => $rc");
+    return $rc;
+  }
+
+  /** Change the rights mode for a file/dir...
+    * @param $filename string The file/directory to change
+    * @throws If filename not exists, or the directory is not RW
+    */
+  public function chmod ($filename, $mode)
+  {
+    $this->debug (2, "chmod ($filename, $mode)");
+    $filename = $this->realpath ($filename);
+    $this->checkPathRW (dirname ($filename));
+    if (! file_exists ($filename))
+      throw new \Exception (sprintf (dgettext ("domframework",
+                                     "File '%s' to chmod doesn't exists"),
+                                     $filename), 404);
+    if (! is_writeable ($filename))
+      throw new \Exception (sprintf (dgettext ("domframework",
+                                       "File '%s' to chmod is not writeable"),
+                                       $filename), 500);
+    $rc = chmod ($filename, $mode);
+    $this->debug (1, "chmod ($filename, $mode) => $rc");
+    return $rc;
+  }
+
+  /** Change the owner for a file/dir...
+    * @param $filename string The file/directory to change
+    * @param $user mixed The user name or user UID
+    * @throws If filename not exists, or the directory is not RW
+    */
+  public function chown ($filename, $user)
+  {
+    $this->debug (2, "chown ($filename, $user)");
+    if (posix_getuid () !== 0 &&
+          posix_getuid () !== $user &&
+          posix_getpwuid (posix_getuid()) !== $user)
+     throw new \Exception (sprintf (dgettext ("domframework",
+                           "Only root user can change the file owner for '%s'"),
+                           $filename), 500);
+    $filename = $this->realpath ($filename);
+    $this->checkPathRW (dirname ($filename));
+    if (! file_exists ($filename))
+      throw new \Exception (sprintf (dgettext ("domframework",
+                                     "File '%s' to chmod doesn't exists"),
+                                     $filename), 404);
+    if (! is_writeable ($filename))
+      throw new \Exception (sprintf (dgettext ("domframework",
+                                       "File '%s' to chmod is not writeable"),
+                                       $filename), 500);
+    $rc = chown ($filename, $user);
+    $this->debug (1, "chown ($filename, $user) => $rc");
+    return $rc;
+  }
+
   /** Chroot in the provided directory
     * @param $directory string The directory to chroot
     * @return true if the chroot is done, false if there is a failure