Issue #1815886 by bojanz, slashrsm | torgosPizza: Change the database schema to allow Drupal core to manage files larger than 4 GB.

CHANGELOG.txt

@@ -1,6 +1,8 @@
 
 Drupal 7.25, xxxx-xx-xx (development version)
 -----------------------
+- Changed the database schema of the {file_managed} table to allow Drupal to
+  manage files larger than 4 GB.
 - Changed the File module's hook_field_load() implementation to prevent file
   entity properties which have the same name as file or image field properties
   from overwriting the field properties (minor API change).

modules/system/system.install

@@ -858,6 +858,7 @@ function system_schema() {
       'filesize' => array(
         'description' => 'The size of the file in bytes.',
         'type' => 'int',
+        'size' => 'big',
         'unsigned' => TRUE,
         'not null' => TRUE,
         'default' => 0,
@@ -3134,6 +3135,21 @@ function system_update_7078() {
   ), array('unique keys' => array('formats' => array('format', 'type'))));
 }
 
+/*
+ * Convert the 'filesize' column in {file_managed} to a bigint.
+ */
+function system_update_7079() {
+  $spec = array(
+    'description' => 'The size of the file in bytes.',
+    'type' => 'int',
+    'size' => 'big',
+    'unsigned' => TRUE,
+    'not null' => TRUE,
+    'default' => 0,
+  );
+  db_change_field('file_managed', 'filesize', 'filesize', $spec);
+}
+
 /**
  * @} End of "defgroup updates-7.x-extra".
  * The next series of updates should start at 8000.